rfp-dan-2017-502469 technical proposal - haier medical · no. in exploded view spare parts nuber...

Manufacturer:Haier Medical and Laboratory Products Co.,Ltd.Address: Haier Industry Park,Economic Technology Development

Zone.Qingdao 266510.P.R.ChinaWed:www.haiermedical.comVersion:1st , 2014Dedicated code:0270500008V98497

No.in

exploded

view

s S

M

Q Failure

rate

Theproportion

of

thesparepart

stock Remark

1 0270801065 cabinetASSY HBC-340 1 0 0 X

2 0060801032 screw HBC-340 2 0 0 X

3 0070106641 locktongueholder HBC-340 1 0 0 X

4 0072040234 panel HBC-340 1 0 0 X

5 0077010031 screw HBC-340 2 0 0 X

6 0074091494 thermostat HBC-340 1 0.392% 0.6% *

7 0075050003 indicationlight HBC-340 1 0.8% 1.2% *

8 0072040012 offlet HBC-340 1 0 0 X

9 0070701307 Compressor HBC-340 1 0.056% 0.056% *

10 0075030020Afan HBC-340 1 0.14% 0.28% *

11 0070803664BCondenser HBC-340 1 0 0 X

12 0074180002A filter HBC-340 1 0 0 X

13 0070402374 wire HBC-340 1 0 0 X

14 0070103022 barrier HBC-340 1 0.035% 0.035% *

15 0070106186 compartmentgrill HBC-340 1 0 0 X

16 0070203825 ice-pack HBC-340 72 0 0 X

17 0270500476 Foamframe(right) HBC-340 1 0 0 X

18 0270500480 Foamframe(leftfront) HBC-340 1 0 0 X

19 0270101313 stainlesssteelliner HBC-340 1 0 0 X

20 0270500477 Foamframe(left) HBC-340 1 0 0 X

21 0270500481 Foamframe(rightback)HBC-340 1 0 0 X

22 0270200542A integerframe HBC-340 1 0 0 X

23 0070204756 tray HBC-340 6 0 0 X

24 0270100218B lowerbasket HBC-340 5 0 0 X

25 0270100218A upperbasket HBC-340 6 0 0 X

26 0270200225 tray HBC-340 6 0 0 X

27 0070814623 handle HBC-340 1 0.168% 0.2% *

28 0070812441A Hinge HBC-340 3 0 0 X

29 0070203941 lowercase HBC-340 3 0 0 X

30 0070203942 uppercase HBC-340 3 0 0 X

31 0270800060 formingdoorASSY HBC-340 1 0 0 X

32 0270500480 Foamframe(rightfront)HBC-340 1 0 0 X

33 0270500479 Foamframe(leftback) HBC-340 1 0 0 X

Drainage Function

Use advanced manostat to ensure the refrigerator safety

using in the indian environment.

No. in

explodedview

spareparts nuber

Spare partdescription

Model QtyFailurerate

Theproportion ofthesparepartstock

Remark

1 0070804793 cover HBC-110 1 0.168% 0.2% *

2 0070601302 screw HBC-110 8 0 0 X

3 0070804793 handlebar HBC-110 1 0 0 X

4 0070804793 lock HBC-110 1 0 0 *

5 0270800472 forming door ASSY HBC-110 1 0.49% 0.5% X

6 0270200543 inner gasket HBC-110 1 0 0 X


8 0070203825 ice-pack HBC-110 47 0 0 X

9 0270800471 inner liner HBC-110 1 0 0 X

10 0270500436 foam-frame HBC-110 1 0 0 X

1 0270500437 foam-frame HBC-110 1 0 0 X

1 0070507542 foam-frame HBC-110 1 0 0 X

1 0070507541 foam-frame HBC-110 1 0 0 X

1 0070507553A foam-frame HBC-110 1 0 0 X

1 0070504237 foam-frame HBC-110 1 0 0 X

1 0070504238 foam-frame HBC-110 1 0 0 X

1 0071150025 lock tongue holder HBC-110 1 0 0 X

1 0077050051 screw HBC-110 2 0 0 X

1 0077010059 screw HBC-110 2 0 0 X

2 0072040234 panel HBC-110 1 0 0 X

2 0074091494 thermostat HBC-110 1 0.392% 0.6% *

2 0075050003 indication light HBC-110 1 0.8% 1.2% *

2 0070402373 power cord HBC-110 1 0 0 X

2 0070104653 wire clip HBC-110 2 0 0 X

2 0070402374 wire HBC-110 1 0 0 X

26 0070802854 compressor supporterHBC-110 1 0 0 X

27 0077050006 screw HBC-110 1 0 0 X

28 0070701331 screw HBC-110 1 0 0 X

29 0070701331

compressor springwasher HBC-110 1 0 0 X

30 0070701331 compressor washer HBC-110 1 0 0 X

31 0070701331 compressor sleeve HBC-110 1 0 0 X

32 0070701331 rubber spacer HBC-110 1 0 0 X

3 0070701331 compressor HBC-110 1 0.777% 0.116% *

3 0070702007 suction pipe assy HBC-110 1 0 0 X

3 0075030020 fan HBC-110 1 0.05% 0.1% *

3 0070701369 condenser HBC-110 1 0.063% 0.1% *

3 0070601302 screw HBC-110 2 0 0 X

3 0079020006 hot shorten bube HBC-110 1 0 0 X

39 0074180002A filter HBC-110 1 0.14% 0.28% *

4 0071210004 barrier HBC-110 1 0 0 X

4 0077010036 screw HBC-110 1 0 0 X

4 0078090012 hinge HBC-110 2 0 0 X

4 0070601302 screw HBC-110 16 0 0 X

4 0072040011 lower case HBC-110 2 0 0 X

4 0072040003 upper case HBC-110 2 0 0 X

4 0072220007 compartmentgrill HBC-110 1 0.035% 0.035% *

4 0077010059 screw HBC-110 2 0 0 X

4 0070204757 tray HBC-110 3 0 0 X

4 0270200542 frame HBC-110 1 0 0 X

5 0070107508 basket HBC-110 3 0 0 X

5 0070107509 basket HBC-110 2 0 0 X

5 0070204756 tray HBC-110 6 0 0 X

2

1

3

4

5

6

7

8

9

2

1

3

4

5

3

6

7

8

4

5

3

6

4

5

0

9

7

8

0

2

1

2

1

HBC-110HBC-200HBC-70

70 198 110

220-240V /50Hz

670× 630× 8181243× 630× 818

75 108

755× 760× 8801325× 760× 880

79 114

860× 630× 818

87

950× 760× 880

No. inexplodedview

spareparts nuber Spare part description Model Qty Failure rate

The proportion ofthespare part

stock Remark1 0070804793 cover HBC-200 1 0.168% 0.2% *

2 0070804793 cover HBC-200 1 0.168% 0.2% *

3 0070804793 cover HBC-200 1 0.168% 0.2% *

4 0070601302 screw HBC-200 4 0 0 X

5 0070815936 forming door ASSY HBC-200 1 0 0 X

6 0070504238 foam-frame HBC-200 1 0 0 X

7 0070204821 gasket HBC-200 1 0 0 X

8 0270200055 integer frame HBC-200 1 0 0 X


10 0070203825 ice-pack HBC-200 70 0 0 X

11 0270100216 stainlesssteel liner HBC-200 1 0 0 X

12 0070507544 Foam frame (rear) HBC-200 1 0 0 X

13 0070507542 Foam frame ( left) HBC-200 1 0 0 X

14 0070507553 Foam frame (bottom) HBC-200 1 0 0 X

15 0070507543 Foam cover ( front) HBC-200 1 0 0 X

16 0070504237 Foam frame (support) HBC-200 1 0 0 X

17 0070504238 Foam frame (middle) HBC-200 1 0 0 X

18 0070507541 Foam frame (right) HBC-200 1 0 0 X


20 0060801032 screw HBC-200 2 0 0 X

21 0077010059 screw HBC-200 2 0 0 X

22 0072040234 panel HBC-200 1 0 0 X

23 0074091494 thermostat HBC-200 1 0.392% 0.6% *


25 0070402373 power cord HBC-200 1 0 0 X

26 0070104653 wire clip HBC-200 2 0 0 X

27 0070402374 wire HBC-200 1 0 0 X

28 0071190002 Compressor bracket HBC-200 1 0 0 X

29 0072060002 Wire clip HBC-200 1 0 0 X

30 0070600089 screw HBC-200 1 0 0 X

31 0077050006 screw HBC-200 4 0 0 X

32 0075020136 Compressor spring washer HBC-200 4 0 0 X

33 0075020137 Compressor washer HBC-200 4 0 0 X

34 0075020305 Compressor sleeve HBC-200 4 0 0 X

35 0075020001 Rubber spacer HBC-200 4 0 0 X

36 0070701332 Starting capacitor HBC-200 1 0 0 X

37 0070701332 Cover HBC-200 1 0.00056 0.00056 X

38 0070701332 Starting relay HBC-200 1 0 0 X

39 0070701332 Power cord grip HBC-200 1 0 0 X

40 0070701332 Compressor HBC-200 1 0 0 *

41 0075030020 Fan HBC-200 1 0.14% 0.28% *

42 0070701369 Condenser HBC-200 1 0 0 X

43 0070108161 condenser reinf HBC-200 2 0 0 X

44 0074140002 processcontrol HBC-200 1 0 0 X

45 0077010024 screwpan head HBC-200 1 0 0 X

46 0077050006 screw HBC-200 1 0 0 X

47 0079020006 Hotshort tube HBC-200 1 0 0 X

48 0074180002A filter HBC-200 1 0 0 *

49 0071210004 barrier HBC-200 1 0.035% 0.035% *

50 0077010059 screw HBC-200 2 0 0 X

51 0077070006 washers HBC-200 1 0 0 X

52 0078090002 Hinge HBC-200 2 0 0 *

53 0070601302 screw HBC-200 12 0 0 X

54 0072040011 lower case HBC-200 2 0 0 X

55 0072040003 upper case HBC-200 2 0 0 X

56 0072220007 compartmentgrill HBC-200 1 0 0 X

57 0077050051 screw HBC-200 2 0 0 X

58 0070202664 Strut HBC-200 2 0 0 X

59 0070107508 basket HBC-200 6 0 0 X

HBC-340

340

1650× 650× 855

1705× 760× 1010

152

181

/60Hz 220-240V /50Hz

40 0070701306 Compressor HBC-200 1 0 0 *(60HZ)

No. inexplodedview

spareparts nuber Spare part description Model Qty Failure rate

The proportion ofthespare partstock Remark

1 0070804793 cover HBC-70 1 0.168% 0.2% *

2 0070804793 cover HBC-70 1 0.168% 0.2% *

3 0070804793 cover HBC-70 1 0.168% 0.2% *

4 0070601302 screw HBC-70 4 0 0 X

5 0070815935 forming door ASSY HBC-70 1 0 0 X

6 0070504238 foam-frame HBC-70 1 0 0 X

7 0070204822 gasket HBC-70 1 0 0 X

8 0270200054 integer frame HBC-70 1 0 0 X


10 0070203825 ice-pack HBC-70 35 0 0 X

11 0270100220 stainlesssteel liner HBC-70 1 0 0 X

12 0070507544 Foam frame (rear) HBC-70 1 0 0 X

13 0070507542 Foam frame ( left) HBC-70 1 0 0 X

14 0070507553 Foam frame (bottom) HBC-70 1 0 0 X

15 0070507543 Foam cover ( front) HBC-70 1 0 0 X

16 0070504237 Foam frame (support) HBC-70 1 0 0 X

17 0070504238 Foam frame (middle) HBC-70 1 0 0 X

18 0070507541 Foam frame (right) HBC-70 1 0 0 X


20 0060801032 screw HBC-70 2 0 0 X

21 0077010059 screw HBC-70 2 0 0 X

22 0072040234 panel HBC-70 1 0 0 X

23 0074091494 thermostat HBC-70 1 0.392% 0.6% *


25 0070402373 power cord HBC-70 1 0 0 X

26 0070104653 wire clip HBC-70 2 0 0 X

27 0070402374 wire HBC-70 1 0 0 X

28 0071190002 Compressor bracket HBC-70 1 0 0 X

29 0072060002 Wire clip HBC-70 1 0 0 X

30 0070600089 screw HBC-70 1 0 0 X

31 0077050006 screw HBC-70 4 0 0 X

32 0075020136 Compressor spring washer HBC-70 4 0 0 X

33 0075020137 Compressor washer HBC-70 4 0 0 X

34 0075020305 Compressor sleeve HBC-70 4 0 0 X

35 0075020001 Rubber spacer HBC-70 4 0 0 X

36 0070701331 Starting capacitor HBC-70 1 0 0 X

37 0070701331 Cover HBC-70 1 0.056% 0.056% X

38 0070701331 Starting relay HBC-70 1 0 0 X

39 0070701331 Power cord grip HBC-70 1 0 0 X

40 0070701331 Compressor HBC-70 1 0 0 *

41 0079020006 hotshorten bube HBC-70 1 0 0 *

42 0074180002A filter HBC-70 1 0.14% 0.28% *

43 0071210004 barrier HBC-70 1 0 0 X

44 0072130038 Washer HBC-70 1 0 0 X

45 0077010036 screw HBC-70 1 0 0 X

46 0078090012 hinge HBC-70 2 0 0 *

47 0077010059 screw HBC-70 16 0 0 X

48 0072040011 lower case HBC-70 2 0 0 *

49 0072040003 upper case HBC-70 2 0 0 *

50 0072220007 compartmentgrill HBC-70 1 0.035% 0.035% *

51 0077010059 screw HBC-70 2 0 0 X

52 0070202664 Strut HBC-70 2 0 0 X

53 0070107508 basket HBC-70 2 0 0 X

40 00707013 Compressor HBC-70 1 0 0 *06 (60HZ)

670× 630× 818

1243× 630× 818

670× 630× 1435

1243× 630× 1435

860× 630× 818 860× 630× 1435

HBC-70

HBC-200

HBC-110

HBC-340 1650× 650× 855 1650× 650× 1465

Do not over fill refrigerator in order to keep proper internal air circulation for better

performance. HBC-200

HBC-70

It is not allowed to charge R134a by R12 charging equipment.

R134a charging equipment can only be used specially for R134a refrigerant,

Due to tolerance of the thermostat you should always set the

been

multimetermultimeter

When the temperature inside is higher than setting, the compressor will run

automatically under the temperature controller control. As time goes by, the

temperature come to lower and lower. When the temperature reach the setting point,

the compressor will stop working.

With this kind of working circulation, the temperature inside can be controlled

around the setting temperature.

that

HBC-70 Circuit Diagram HBC-110/200/340 Circuit Diagram

Food, drinks or any others do not be allowed stored inside.

charge

with water (not dry) storedinside refrigerator.

Completely CFC-FREE refrigerant R134a used in refrigerator

with ozonosphere depletion coefficient (0DP)=0.

Haier after - sale training material, confidential.

Product Type: Vaccine Refrigerator

Model: HBC - 80, HBC - 150, HBC - 260

Product Diagram:

Service Manual

Refrigerator HBC - 80, 150, 260 After - sale Service Manual

2

Table of contents

I. Product model schematic .................................................................................................................................................. 3

II. Schematic of product appearance and parts ..................................................................................................................... 3

III. Product function, list of overall parameters ...................................................................................................................... 4

IV. Spare parts of electrical appliance details and wiring diagram ......................................................................................... 4

V. Refrigerating System Parameters and Spare Parts Details ................................................................................................. 5

VI. Parts Details and Exploded View ....................................................................................................................................... 7

VII. Operation Guide ................................................................................................................................................................ 9

VIII. Alarm function and indication ......................................................................................................................................... 12

IX. Special notes for installation and commissioning............................................................................................................ 13

X. Guide for replacement of key components ..................................................................................................................... 13

XI. Transportation condition, installation environment, package dismantling ..................................................................... 23


3

I. Product model schematic

H Haier B (Ice Liner) C(Refrigerator) -80 (Volume: about 80L)

II. Schematic of product appearance and parts

Handle

Door

Handle

Storage( Optional)

Shield

Compressor

Electric control box Switch

Temperature

HINGE

Temperature displayer

Compressor

Condenser

Filter


4

III. Product function, list of overall parameters

Model HBC - 80 HBC-150 HBC-260

+ 5 to + 43 + 5 to + 43 + 5 to + 43

Temperature range of

refrigerating compartme

+2 to +8 +2 to + +8 +2 to +8

Gross refrigerating volume (L) 80 150 260

Vaccine Storage Capacity (L) 61 122 211

Refrigerant (g) 60 70 90min

Rated voltage V 220V - 240V 220V-240V 220V-240V

Rated frequency Hz 50 50 50

Rated power (W) 105 110 230

Overall dimension (W x D x H)

(mm) 875 875 875

Product Weight (kg) 73 85 132

IV. Spare parts of electrical appliance details and wiring diagram

HBC - 80, HBC - 150, HBC - 260

No. Special No. Description Cons

ump.

Main technical parameters Remarks:

2

0274000352

Electronic

temperature

controller

1 Working voltage: 220V - 240V, 50 60HZ

3 0274000354 Switch 1 Rated specifications: AC 230V, 50 60HZ , 20A

4

0274000357 Temperature

displayer

1 Temperature test range: -

-carrying is lower than:

0. 2A

5 0074000574A

Compressor

indicator

1 Rated specification: 230V,


5

HBC - 80, HBC - 150, HBC - 260 wiring diagram:

V. Refrigerating System Parameters and Spare Parts Details

HBC - 80, HBC - 150:

No. Special No. Description Consump. Main technical

parameters

Remarks:

1 0275010051 Compressor

1 Model: HXK 70AT, 220V -

240V

2

0270700422 Evaporator

1 Capillary flow 5L min Inside

insulation

layer

3

0270700425 Condenser

1

wire

4 0074180007 Dry Filter 1 15g

5

0070301474A Refrigerant

60g R600a HBC - 80: 60g

HBC - 150: 70:

g


6

HBC-260

No. Special No. Description Consumption. Main technical

parameters

Remarks:

1 0275010063 Compressor

1 Model: HXK 95AT, 220V -

240V

2

0270700421 Light pipe

evaporator

1 Capillary flow 5L min Inside

insulation

layer

3

0270700421 Filament

condenser

1

wire

4 0074180007 Dry Filter 1 15g

5 0070301474A Refrigerant 90g R600a

The refrigerating system of Haier vaccine refrigerator adopts direct cooling method.

The refrigeration effect is realized by compressor working which is under the control of thermostat.

Specifically, the compressor works and forces the refrigerant to flow through the condenser, dry filter

and evaporator and finally return to the compressor. This is a complete cooling cycle

Compressor Condenser Drying filter

Capillary Evaporator


7

VI. Parts Details and Exploded View


8

Exploded View Details

No. Special No. Name Remarks:

1 0274000357 Solar display screen

2 0070814623D Handle Assembly

3 0070816334

HINGE ASSEMBLY -

ASSEMBLY

4 0070203942B

0070204349B

Upper/ Lower Hinge

Cover

5 HBC - 80, HBC - 150: 0270700425

HBC - 260: 0270700421 Condenser

6 0074180007 Filter

7 HBC - 80, HBC - 150: 0275010051

HBC - 260: 0275010063 Compressor

8 0274000354 Power Switch

9 0274000342 Power cord socket

10 0074000574A Power pilot lamp

11 0274000352A Temperature Controller

1-19 0274000351A Fan

13 0270200838 FAN, HOUSING

15 0270102688D Storage basket


9

VII.Operation Guide

1. Temperature Controller

(1). Temperature controller panel

(2). indication description

1. Power supply indication: The external voltage reaches a certain value, the sub - indication will display.

2. Alarm indication: When the controller is in the alarm state, the symbol flashes to alert the user.

3. Refrigeration indication: This symbol is displayed when the refrigeration is outputting.

4. Lock the indication. This symbol displays when the controller is locked.

5. Defrost indication. This symbol displays when the controller is defrosting. This product does not have this

function.

(3). Controller lockout, unlocking and temperature viewing

If there is no key operation for the 60s, the controller will automatically lockout and the buzzer will beep for

approximately 0. 5 seconds.

If there is no key operation for 2 minutes, the controller will automatically turn off the display, and only the power flag

flashes.

Pressing button and for 5 seconds can unlock the locked controller locked or lockout it, and the buzzer beeps

Alarm

indication

Refrigeration

indication

Lock the

indication

Defrost

indication

Power supply

indication


10

approximately for about 0. 5 seconds. When the controller is locked, it cannot be operated until it is unlocked.

Press and key under unlock state for 1s, the freezing ch

ambient temperature (before the failure of the ambient temperature sensor), and will automatically logout if there is no

button operation in 2 seconds.

ambient temperature, and will automatically logout if there is no button operation in 2 seconds.

Any key operation under the locked state, the two display windows will be illuminated and show the temperature of

ice layer and freezing chamber respectively.

(4). parameter setting

1. Under unlock state, press the key for more than 5S , the display screen will display the

parameter code" PS "(password);

2. Press key to enter password setting;

3. Use key and to roll the number to "-15";

4. Press key to confirm the password;

5. The keys and to roll the parameters (SP1, SP2, SP3, AH1, AH2, AH3, AL3, r0, r1, r2, r3, Rd1, Rd2, Rd3, CA0,

CA1, CA2, CA3, CA4, t0, t1, t2, Ad, AE, Aln, PCH);

6. Press key to confirm the parameter and display the parameter value;

7. Use the keys and to enter the value of the parameter;

8. Press the key to temporarily save the modified parameter value and return to the display parameter;

9. When modifying other parameters, repeat steps 5 - 8;

10. Press the key for more than 5 seconds, save the modified parameter value and return to normal condition.

Factory default parameter list

Parameter

s Description Unit Default Remarks:

SP1 Control Temperature 1 oC 0

Not

applicable to

this model

SP2 Control Temperature 2 oC 4

Not

applicable to

this model

SP3 Control Temperature 3 oC -12

r0 SP2 can set maximum temperature oC 8.0

Not

applicable to

this model


11

r1 SP2 can set minimum temperature oC 2.0

Not

applicable to

this model

r2 SP3 can set maximum temperature oC 0.0

r3 SP3 can set minimum temperature oC -20.0

Rd1 SP1 control temperature difference oC 0.2

Not

applicable to

this model

Rd2 SP2 control temperature difference oC 0.5

Not

applicable to

this model

Rd3 SP3 control temperature difference oC 1

CA0 The ice temperature calibration

target oC 0

Not

applicable to

this model

CA1 Ice Sensor Calibration Temperature oC 0

Not

applicable to

this model

CA2 Refrigerating storage sensor

calibration temperature oC 0

Not

applicable to

this model

CA3 Freezing Sensor Calibration

Temperature oC 0

CA4 Ambient Temperature Sensor

Calibration Temperature oC 0

T0 Start - Up Delay Start min 5

T1 Time Delay Start min 20

T2 Time of Delay for Starting Freezing min 5

Ad Alarm Delay min 10

AE Delay for Cancelling beeping and

re-alarm min 30

ALn - 0

PCH Product Model Selection - 6

(5). fault code

Display

symbols

Description of symbols

Er3 Freezing sensor fault

Er4 Ambient temperature sensor fault

(6). Wiring Diagram

Ice layer Refrigerator

Freezing Heating wire

Power

Ice layer Refrigerator

Freezing Ambient temperature


12

Before changing, please make sure the power supply voltage meets the requirements of the power supply of the

controller. Otherwise, the instrument may not work normally or even burn down.

Freezing Sensor Terminal Color: Yellow

2. Displayer (on the product door):

Temperature displaying area Solar receiving area

The displayer shows the real - time temperature inside the chamber. The displayer is equipped with solar energy by itself,

requiring no external circuitry. The displayer only shows the temperature inside the chamber, without controlling the

refrigerating system of the product.

The solar receiving area cannot be blocked during its usage; otherwise the temperature displaying area will not display.

In the case of weak light when the displayer will flash or display unclearly, use a flashlight or other light source to illuminate

it for about 3 seconds will make it display normally.

VIII.Alarm function and indication

Display

symbols

Description of

symbols

Alarm mode Cancel alarm mode

Er2 Refrigerating

storage sensor

fault

Code flashing Overhaul refrigerating sensor

Er3 Freezing sensor

fault

Code flashing Overhaul Freezing Sensor

Er4 Ambient

temperature

sensor fault

Code flashing Overhaul Ambient Temperature Sensor

AH1 High ice

temperature

alarm

Code flashing Automatic release or overhaul the sensor after the

temperature cools down.

AL1 Low ice

temperature

alarm

Code flashing Over-low ambient temperature may cause

over-freezing of the water tank

AH2 High

refrigerating

temperature




13

alarm

AL2 Low refrigerating

temperature

alarm

Code flashing Check the heating function, overhaul the sensor

AH3 High freezing

temperature

alarm



AL3 Low freezing

temperature

alarm

Code flashing Check whether the ring temperature is so low that

it has caused the over-low temperature in the

tank, or overhaul the sensor

IX. Special notes for installation and commissioning

X. Guide for replacement of key components

5. 1 Troubleshooting method for temperature controller

LCD display

of

temperatur

e controller

Phenomenon 1 Phenomenon 2 Reasons Solution

ERR Display screen show Err, the

alarm bell twinkle and

buzzer ring

Compressor run

15 minutes, stop

8 minutes, so the

cycle

The controller is

broken

Change the controller

EHi Display screen show Ehi The inner temp.is

higher than 85

Check the

temperature s

position

ELo Display screen show Elo The inner temp.is

lower than -50

Check the

temperature s

position

HA

Alarm bell twinkle, buzzer

rings

The inner temp.is

higher than the

setting value of

1. if the refrigerator

start not long time ,It

is normal.


14

high temp. alarm. 2. check whether

the improper setting

of high

temperature alarm

parameters

3. Find the cause of

high temperature in

the refrigerator and

solve it.

Al Alarm bell twinkle, buzzer

rings

The inner temp.is

lower than the

setting value of

low temp. alarm.

1. Check if the

environment temp.is

lower than 0

2. Check if the low

temp. alarm setting

value is wrong

3. other reasons

The show

screen is

dark

Alarm bell twinkle, buzzer

rings

Power off. Reconnect the power

5.2 How to deal with the high temp. alarm?

When the temperature is higher

than the set value of AH over 10

hours. Or the temperature is higher

10 degree. Then the high alarm

start.(factory default is 8 ) N

Yes

The buzzer ring, bell flickering

When the temperature is higher than the set value of AH over 10 hours. Or the temperature is higher 10 degree. Then the high alarm start.(factory default is 8 )


15

5.3 how to deal with the low temp. alarm?

if the compressor

runs

if the fan is working

N check compressor

Yes

Yes

if the seal strip is

sealed

Yes

Check if the refrigerant leak

check the fan N

Restore prevenient shape by the hair drier

N

When the temperature is lower than the set value of AL over Ad hours.

N

Yes

When the temperature is lower than the set value of AL over Ad hours.

Yes

When the temperature is lower than the set value of AL over Ad hours. Then the low alarm start.(factory default is 2 )


16

5.4 how to deal with the power off alarm?

If the compressor is working

NCheck if the innor temp.is lower than setting temp.value.

Yes

Check if the environment temp.is lower 5

check the tenp.controller

N

The power is off ,check if the power switch is on

N

Yes

The buzzer rings and the backlight is off

Check f the power in socket is normal

N

check the user s electric circuit

Yes

Reconnect the power plug

Check the other electric wire is

dropped

N

Check if the inner temp.is lower than the setting value

If the power plug is


17

5.5 Servicing the vaccine refrigerator

(1) Check the whole circuit of vaccine refrigerator for disconnection, damaged wire and short circuit.

(2) Check the insulation of vaccine refrigerator. In normal conditions, the resistance is higher than 2

megohm; if it is lower than 2 megohm, please

Set the voltmeter at R1 Ohm position, insert its two styli respectively into L and N terminals and read

the indicated value. The normal value is from several ohms to scores of ohm. If the resistance is zero, it

means that short circuit occurs in the vaccine refrigerator or short circuit occurs due to poor

performance of the compressor/fan motor. In this case, please investigate the cause and repair. If the

resistance is too high or infinite, it means that open circuit occurs. In this case, please check and clear

the fault.

After the above checks, make sure that the vaccine refrigerator is free of electrical fault and turn it on.

5.6 Reason for Electric Leakage

(1) Electric leakage of the compressor

(2) Electric leakage of the thermostat

(3) Electric leakage of the fan

(4) Electric leakage of damaged wire

If the electric power cut because of the vaccine refrigerator leakage ,try to disconnect the

compressor\controller\fan\power line and so on one by one. Once the power circuit is normal when you

disconnect the one, you can conclude the unit is leaky.

5.7 Troubleshooting for refrigerant leak

1 Touch the cover of the condenser; after continuous running, the temperature in the

upper part of the cover is the highest, and that of the lower part is close to the room


18

temperature. The temperature is associated with the ambient temperature. The

temperature is low in winter; so the temperature of the condenser is low as well, and

only a small part of the condenser is warm. The temperature is high in summer; so the

temperature of the condenser is high as well, and the whole condenser is warm. If the

condenser is not warm, it may be a result from refrigerant leak.

2 The temperature of the high-pressure exhaust pipe is high; when you touch it with

hand in summer, you may feel hot. It feels hot even in winter. The temperature of the

low-pressure intake pipe is low. Dew drops may appear on the pipe wall in summer, and

you may feel cool when touching it. In winter, you may feel cooler when touching it. If

the exhaust pipe is not hot, and the intake pipe is not cool, then it may be a result of

refrigerant leak.

3 Under normal working conditions, the temperatures around the surface of the

evaporator of the vaccine storage freezer are almost the same, and the frosts are of the

same thickness. If there is no frost on the surface of the evaporator (the whole inner wall

of the chest vaccine storage freezer) or only in a small upper part of the evaporator

surface, then the cooling system has failed, such as insufficient refrigerant or refrigerant

leak

4 Check the pipeline and determine that there is no leak, especially at the joints. The

refrigerant containing a small amount of refrigerant oil is of good permeability. In case

of leak, there are oil stains at the leak point.


19

5 When the vaccine storage freezer is working normally, the high-pressure liquid

refrigerant flows into the low-pressure evaporator through the capillary, and the sounds

of air flow and water flow could be heard. Open the door of the vaccine storage freezer,

approach the evaporator, and you may hear the sounds as mentioned. If there are no

sounds or there are only occasional sounds, it indicates that there is refrigerant leak or

insufficient refrigerant in the system.

5 8 Analysis of poor refrigeration effect and solutions

(1) Check the setting value of thermostat. If it is not in the range of 2 ~5 , adjust it to 3 .

(2) Check whether the back and top of vaccine refrigerator are too close to the wall, whether the

vaccine refrigerator is exposed to direct sunlight or close to a heat source, whether the room

temperature is too high and whether the condenser is clogged by a piece of cloth, paper or dirt. Any

d further reduce its

refrigerating capacity.

(3) Check whether there are too many vaccines in the vaccine refrigerator. If hot vaccines or too many

vaccines are put in the refrigerator, cold air circulation would be affected. Hot vaccines must not be

put in the refrigerator until they get cool.

(4) Check whether the refrigerator door has been closed well, whether the door sealing strip is too dirty

and whether the door is sealed well. Remove dirt and apply a little talcum powder.

(5) Frequent opening and extended opening of the refrigerator door will reduce the refrigerating

capacity.

5.9 How to handle poor sealing of the sealing strip

If poor sealing is caused by too much dirt on the sealing strip, clean the sealing strip with a cloth and


20

lukewarm water. After cleaning, apply a little talcum powder. If there is still a gap, blow the sealing strip

with an electric dryer to heat it and maintain the temperature between 50 and 60 , then press

around the sealing strip by hand to recover it. If this method is useless, wedge a piece of sponge (about

10 mm in width, 5 mm in thickness and a little longer than the gap) into the position between the

bottom of sealing strip and door mat.

5.10 Why the vaccine refrigerator cannot be used at low temperature

When ambient temperature is below 0 , the lubricating ability of refrigeration oil in the compressor

will reduce and the compressor will be difficult to start or cannot start or may be damaged.

5.11 How to know the compressor motor is at fault

It is easy to find that the motor is at fault by checking the resistance of its coil. Specifically, connect both

coil. If the resistance value is infinite, it means open circuit of coil. If the resistance value is much less than

that of the motor, it means that short circuit occurs in the motor or the winding is burned..

5.12 Fault analysis and servicing of the vaccine refrigerator

Fault Causes Solutions

The compressor cannot

start

1. The fuse is blown

2. The plug, socket and cable are in bad

connection. The cable is broken

3. The voltage is too low, 10-15% less than

rated voltage

4. The thermostat setting is not correct

5The thermostat is at fault

6. The starting relay or thermal protection

device is at fault or damaged

7

or running coil is broken

8. The compressor motor is burned or the

rotor and starter are locked

9. High-pressure gas valve leaks or the

shaft is locked

1. Check for short circuit: if short

circuit occurs, clear this fault; if

there is no short circuit, replace the

fuse with a proper one

2. Check and reconnect, or replace

them

3. Use continuously until the

voltage rises to rated voltage or

install a voltage stabilizer

4. Reset the thermostat

5. Replace the thermostat

6. Replace the starting relay or

thermal protection device

of a multimeter; if the coil is


21

broken, replace the compressor

8. Replace the compressor

9. Replace the compressor The compressor starts

frequently and keeps

operating for a very long

time, but the temperature

drop inside the vaccine

refrigerator is at very low

speed

1. There is an excessive distance between

the thermostat probe and evaporator

2. The thermostat is at fault

3. There are too many vaccines in the

vaccine refrigerator; the door is opened

and closed frequently or is kept open for

an unnecessarily long time

4. Ambient temperature and humidity are

too high; airflow is impeded

5 The frost is thick on evaporater

6. Refrigerant is insufficient or refrigerant

leakage occurs

7. The compressor efficiency reduces

8. The dry filter is clogged

1. Move the probe to be close to

the inner wall


3. Take out some vaccines, reduce

the times of door opening and

shorten the time of door opening

4. Install the vaccine refrigerator in

a proper well-ventilated location

5. defrost

6Check or refill refrigerant


8. Replace the dry filter with a new

one

The compressor keeps

running without stop, the

temperature inside the

vaccine refrigerator is too

low

1. he temperature setting value of thermostat is too low

2. The contact of thermostat is stuck 3. The probe of thermostat in an

improper position causes maladjustment

4. The compressor efficiency reduces

5. Adjust the temperature setting value to a correct value

6. Repair or replace 7. Move the probe to a proper

positionReplace the compressor

The compressor buzzes

but cannot start, the

thermal protection device

trips repeatedly

1. The voltage is too low 2. The starting relay is at fault3. The starting coil of starting motor is

broken 4.The compressor does not run

1. Install a voltage stabilizer and adjust it to rated value

2. Replace the starting relay 3. Replace the compressor The shaft piston in the compressor

is clogged; replace it

After short time of

operation, the overload

protection device cuts off

1. The voltage is too high2. The overload protection device is not

in good condition and trips earlier 3. The contact of starter is stuck 4. Short circuit occurs in the compressor 5. Mechanical failure occurs in the

compressor The temperature is too high around the

compressor

1. Install a voltage stabilizer and adjust it to rated value

2. Replace the overload protection device

3. Replace the starting relay 4. Replace the compressor 5. Replace the compressor Increase the space for heat

dispersion


22

There is loud noise when

the compressor is running 1. The floor is not solid 2. The vaccine refrigerator is not stable

and level 3. When the compressor is running, the

friction between pipes and the refrigerator body causes resonance

4. The fixing screws of compressor are loose

5. Vibration pad fixing the compressor is too tight, too loose or is aged

6. There is loud noise inside the compressor

or the vibration-absorbing suspension

spring is broken

1. Reinforce the floor 2. Keep the vaccine refrigerator

stable 3. Move pipes a little away from

the refrigerator body to avoid friction

4. Tighten the screws to a proper extent

5. Adjust the tightness of vibration pad or replace vibration pad

Replace the compressor

No frost on the

evaporator

1.Severe refrigerant leak

2. The capillary or the

system is blocked by dirt

1.Carry out leak

detection, repair, weld,

and add the refrigerant

2. Clean the capillary or

replace the filter

There is insufficient

frost on the

evaporator

1.There is a little leak in the

refrigerator

2.It is blocked by dirt, but not

severely

3.Reduced refrigerating capacity

of the compressor

1.Carry out leak

detection, repair, weld,

and add the refrigerant

2. Clean the capillary and

the filter

The evaporator is

frosted rapidly, or is

with too thick frost,

or is iced

1. The vaccine stored in the

vaccine storage freezer contains

water (not dry)

2. There are too many vaccines

stored in the vaccine storage

freezer

1. Clean the vaccine and

dry it, and then place into

the vaccine storage

freezer

2. Only appropriate

number of vaccines are


23

stored

Electric leakage occurs on

the refrigerator body and

you will be tingled when

touching by hand

1. The refrigerator body is not grounded 2. The compressor terminal contacts the

refrigerator shell and causes short circuit

3.The components of electrical system get

wet, and thus their insulating ability

reduces, resulting in electric leakage

1. Ground the refrigerator body as stated

2. Replace the compressor Check carefully step by step. If

insulation is seriously damaged,

replace the components; remove

wet components and put them in

a drying box to dry them Electric leakage occurs in

the fan 1. Ambient humidity is too high or the

insulating ability of insulator reduces 2.Short circuit occurs between coils or coils

are burned

1. Control ambient humidity and replace the wire of fan

2.Replace the fan

The fan makes loud noise 1. The fan blade is locked or the fan support is loose

2. The clearance of fan axle is too big

1. Remove any obstacle around the fan or tighten the support

Replace the fan

The fan does not run 1. Check joints for disconnection 2. Check whether the fan is burned

1. Replace the fan Replace the fan

Electric leakage occurs in

the thermostat 1. The thermostat has been used for an

excessively long time 2. The environment is too dirty 3. Ambient humidity is too high

1. Replace the thermostat 2. Remove dust with a brush Keep the thermostat dry and

control ambient humidity

The thermostat is at fault The temperature-sensing probe is

damaged Replace the thermostat

Bad contact between the

temperature-sensing

probe and evaporator

The position of probe is improper or

changes during transport Reinstall the probe

XI. Transportation condition, installation environment, package dismantling

1. Transporting and Transferring Conditions

1

2 When transferring the refrigerator, pay attention to use the special unloading vehicle or truck. It is

strictly prohibited from sliding down or dropping directly from high place.

3 When handling the refrigerator, be careful not to trip over it, preventing personal injury or

damage to the refrigerator.

4 Do not attempt to pull or carry the equipment by the door handle, preventing personal injury or


24

damage to the refrigerator.

2. Installation environment

1 - conditioning

system shall be used for extreme weather condition.

2 Ambient humidity: below 85% Rh.

3 Avoid large quantities of dust.

4 Avoid machine sway or vibration.

5 Working position of the refrigerator: below 2000m.

6 It should be placed in bright place without direct solar radiation.

3. Packing Dismantling

1 Cut the packing belt outside the packing case with a blade.

2 It can be lifted by multiple people to open the package.

3 Remove the bottom bracket

Take care to avoid unnecessary personal injury in this process.

1

Ice Lined Refrigerator HBD-116 BD-286

Haier Medical & Laboratory Products Co., Ltd.

Service Manual

2

Effective models

This service manual is effective for following models

Model name Product code climate type Voltage(V)/

Frequency(Hz) Plug-type

HBD-286 BE04F4E26 T 220V\50HZ India

HBD-286(

220V50HZ) BE04F5E26 T 220V\50HZ

HBD-116 BE04G4E26 T 220V\50HZ

HBD-116(

220V50HZ) BE04G8E26 T 220V\50HZ

HBD-116(

) BE04GCE26 T 220V\50HZ

3

Content

Designation .................................................................................................... 4

Safe Caution ................................................................................................... 5

Product appearance ....................................................................................... 6

Parts and functions ........................................................................................ 8

component structure ..................................................................................... 9

Specification ................................................................................................ 11

Product nameplate ...................................................................................... 12

Wiring diagram ............................................................................................ 13

System flowchart ......................................................................................... 15

Net dimension ............................................................................................. 16

Installation and accessories .......................................................................... 17

Adjustment of thermostat ............................................................................ 19

I. Introduction of display panel and buttons ................................................... 19

II.Parameters and operation of controller ....................................................... 20

III.Menu description ....................................................................................... 22

Function procedure ...................................................................................... 31

System troubleshooting ............................................................................... 33

1.System troubleshooting .............................................................................. 33

2.Common failures in vaccine refrigerator ...................................................... 42

3.Maintenance refrigerator and technical requirements ................................ 44

4.Application and maintenance of vaccine refrigerator .................................. 46

5.Evacuating and filling procedures and tools needed .................................... 49

6.Noise from the vaccine refrigerator ............................................................. 51

7.National noise standards ........................................................................... 56

8.Technology for measuring performance parameter ..................................... 58

Details of wearing parts ............................................................................... 62

4

Designation

Regulations for type naming:

Note: rated volume can be the gross volume or effective volume; the manufacturer can decide it by him according to the actual situation. The effective volume value must be marked on the nameplate whether effective volume or gross volume is marked in the product name. Examples: HBC-200 means that the Ice-Lined Refrigerator with the temperature at characteristic temperature 2-8 , horizontal and rated effective volume 200 L.

HBC XXX X

Design No. is expressed with character sequence

Rated volume value is shown with L

Ice Lined Refrigerator

a: first letter of Pinyin of Haier(name of the group)

b: first letter of pinyin of bingxiang (meaning vaccine refrigerator)

c: first letter of pinyin of cang (meaning refrigeration)

5

Safe Caution

Please read carefully all these notes before application of the vaccine refrigerator. During application of the vaccine refrigerator, remember to comply with the following basic safety notes:

1. The vaccine refrigerator can only be used for purposes mentioned in this Instruction and Maintenance Guide.

2. The vaccine refrigerator shall be installed correctly according to instruction in the chapter of installation . For description before application, refer to earthing instruction in the chapter of installation .

3. ng the power line, but clutch the plug and remove it from the electric socket.

4. line with crack or scratch in the line, plug or connector end.

5. Remember to remove the plug of the vaccine refrigerator before cleaning or any repair. Caution: in case of demand on repair of the vaccine refrigerator, it shall be repaired by professional technical personnel.

6. If the old vaccine refrigerator is no longer in application, it is recommended from us that the vaccine basket be placed in a suitable place to reduce possibility of hazard to child.

7. The vaccine refrigerator is forbidden to be placed or embedded into a closed cupboard. It can only be independently installed.

8. The vaccine refrigerator is not allowed to put into application in places with explosive fume.

9.

6

Product appearance

HBC-70

HBC-110

7

HBC-200

Inner side

8

Parts and functions

Lock

Cover

Vaccine basket

Handle

Inner lining

Tray

Control panel Access cover

Defrosting drain

9

component structure

Electronic Thermostat

Box structure

Reduce

Control keys

FN:Function k

Increase

Power switch

Cabin GrilleRodent control grille

Power Cord

10

Electronic Thermostat compressor Fan motor

Condenser

11

Specification

Model HBC-70 HBC-200

Power (V/Hz) 220~240V/50Hz 220~240V/50Hz

Net weight (Kg) 68 112

Total packaging weight (Kg)

69 114

Capacity (L) 70 200

Dimension of vaccine refrigerator

(Width×Depth×Heihgt)

670×630×847 1240×630×847

Dimension of package (Width×Depth×Height)

755×760×900 1325×760×900

12

Product nameplate

13

Wiring diagram

HBC-70

XP-Power Plug

SAT- Electronic Thermostat

KA- StarterM1-compressorHYE-switch light

C- Start capacitor

14

HBC-110\200

XP-Power Plug

SAT- Electronic Thermostat

KA- StarterM1-compressor M2-fan motorHYE-switch light

C- Start capacitor

15

System flowchart

Cooling system of the vaccine refrigerator by Haier is composed of a type of direct cooling system.

The cooling effects are achieved by operation of the compressor while operation of the compressor is controlled by the thermostat. Detailed information is as follows : operation of the compressor forces refrigerant (R134a) to gradually flow through the condenser, dry filter and evaporator and finally return to the compressor. This is a complete cooling cycle.

1-Compressor 2-Condenser 3-Dry filter 4-Capillary 5-Evaporator

16

Net dimension

Model HBC-70 HBC-110 HBC-200

Dimension of vaccine refrigerator

(width ×depth ×height) mm

670×630×820 1240×630×847

Dimension (with the door open)

670×630×1435 1240×630×1462

17

Installation and accessories

Removing package of ice lining vaccine refrigerator

1. Remove all packaging materials, including the foam base and all tape for fixing accessories inside and outside the vaccine refrigerator.

2. Before power is connected to the vaccine refrigerator, inspect and remove any remaining packaging material, tape or printed material.

Adjusting vaccine refrigerator

1. The vaccine refrigerator is specially designed for independent installation, and it is not allowed to be placed or embedded into cupboard.

2. The floor for placement of the vaccine refrigerator shall be solid enough for bearing weight of the vaccine refrigerator stuffed with articles.

3. When removing the vaccine refrigerator, make sure the angle of inclination shall not be above 45 degrees. Otherwise, the compressor and the sealing system will be damaged.

4. If the vaccine refrigerator has been tilted, it shall be placed upright for at least 24h before it is plugged in.

Good ventilation

To ensure that the vaccine refrigerator reaches the designed maximum operating efficiency, it shall be installed in placed with good ventilation.

Piping and electrical connection.

Recommended space around the vaccine refrigerator is as follows:


so that better refrigeration effects can be achieved.

Electrical requirements

Make sure there exists suitable power socket (220V) with correct earthing near the vaccine refrigerator.

Avoid cutting the third earthing pin. Otherwise, it shall be very dangerous because

18

effective earthing will no longer be supplied to the vaccine refrigerator, which may cause electric shock.

Installation restrictions

heating conditions, such as garage, etc.

The vaccine refrigerator shall be installed in suitable place with solid and smooth surface and it shall be kept from direct sunlight or heat sources (such as electric radiator, baseboard heater and cooker, etc).


After the vaccine refrigerator is installed in suitable place, plug into the 220V socket.

The vaccine refrigerator is equipped with a thermostat for controlling temperature of the vaccine chamber. The temperature can be set between 2 ~8 with the button or .When the vaccine refrigerator is powered, the yellow light will on.

After the vaccine refrigerator has been working for 48h and its temperature has been set as required, vaccine can be placed in the vaccine refrigerator.

In case of removal of the plug of vaccine refrigerator or power failure, it can only be plugged in after 5min.

(Caution: if the vaccine refrigerator has been placed flat or tilted for some time, it shall be kept upright for 24h before power is connected again for operation.)

19

Adjustment of thermostat

II.. IInnttrroodduuccttiioonn ooff ddiissppllaayy ppaanneell aanndd bbuuttttoonnss

Three digits, a minus sign and 5 symbols (refrigeration, power supply, lock, alarm and defrosting) can be displayed on the display panel.

1. Refrigeration symbol. When the compressor is in operation, the symbol is displayed.

2. Power supply symbol. When external power supply is connected to the controller, the symbol is displayed.

3. Lock symbol. When the controller is locked, the symbol is displayed.

4. Alarm symbol. When the controller is in state of alarming, the symbol flashes to alert the user.

5. Defrosting symbol. When the controller is in state of defrosting, the symbol is displayed.

These four buttons , , , and Fn exist on the instrument for operation of the controller.

20

IIII..PPaarraammeetteerrss aanndd ooppeerraattiioonn ooff ccoonnttrroolllleerr

Under normal circumstances, the measured temperature is displayed by the controller, and in case of failure of the sensor, Err is displayed. When the sensor is above 85 ,EHi is displayed, while it is below -50 , ELo is displayed.

1. Parameter setting method

Setting control temperature

Under normal circumstances, press the button and release it, and the current control temperature is displayed on the display screen;

Increase or decrease the value with the buttons or until the desired value is obtained;

Confirm the new value by pressing the button again, and save the new valuebefore returning to normal operating mode.

Setting parameters of other general menus

1. Hold the button for more than 3s, and the parameter code PS (password) is displayed on the digital tube;

2. Roll parameters with the buttons and (PS, AB);

3. Confirm the parameter by pressing the button , and value of the parameter is displayer;

4. Increase or decrease the value of the parameter with the buttons or ;

5. Save temporarily the modified parameter value by pressing the button , and return to the parameter displayed;

6. If values of other parameters are to modified, repeat steps 3~5;

7. Hold the button for more than 3s to save the modified parameter value and return to normal circumstances.

Setting parameters of administration menu:

1. Hold the button for more than 3s, and the parameter code PS (password) is displayed on the display screen;

2. Set the password by pressing the button ;

3. Roll the number to -15 with the buttons and ;

4. Confirm the password by pressing the button ;

5. Roll the parameter name with the buttons and ;

6. Display the correspondent parameter value by pressing the button ;

7. Increase or decrease the value with the buttons or ;

21

8. Save temporarily the modified parameter value by pressing the button , and return to the parameter displayed;

9. If values of other parameters are to modified, repeat steps 5~8;

10. Hold the button for more than 3s to save the modified parameter and quit the parameter setting program.

Caution: if there is no button operation within 3min, the setting shall be automatically quitted and the controller is locked. Meanwhile, execution shall be implemented with the parameter memory last set.

22

IIIIII.. MMeennuu ddeessccrriippttiioonn

Parameters of the controller are divided into general menu and administration menu.

General menu

Parameter Description Min. Max. Unit Default

St Control temperature r1 r2 5.0

PS Password to access administration menu -50 100 -- 0

Ab Select mode A b -- b

St for controlling temperature

With St >=2 , when the temperature measured PV >= St + r0, the machine is started, and when PV <= St, it is stopped.

With St <=2 , when the temperature measured PV >= St + r0, the machine is started, and when PV <= St- r0, it is stopped.

Setting range of St is determined by the parameters r1 and r2, with St <= r1 and St >= r2.

PS, the password to access the administration menu

When accessing the administration parameters, only with the correct password entered can the parameters of the administration menu be modified. If a wrong password is entered, the parameter setting will be quitted.

Caution: the correct password is -15.

Ab for selecting mode

When mode A is selected, it is special for ice lining projects; mode b is a general mode, and mode A is default.

When mode b is selected, the part of displayed temperature is specially treated to agree with the temperature display of the cabinet.

When the measured temperature is between 2.5~7.5 , the measured temperature is displayed with a refreshing frequency of 15s;

If the measured temperature is above 10.0 or below 1 , the actual temperature is displayed;

If the measured temperature is above 7.5 and below 10.0 , 7.5 is displayed, and if it has been continuously above 7.5 for over 4min, the actual temperature is displayed.

If the measured temperature is below 2.5 and above 1.0 , 2.5 is displayed, and if it has been continuously below 2.5 for over 4min, the actual temperature is displayed.

23

Administration menu in mode A


r0 Control temperature difference 0.5 5.0 1

r1 Max. temperature can be set r2 50 8

r2 Min. temperature can be set -50 r1 2

CAL Calibrated temperature of sensor -3.0 3.0 0

t1 Delay in start-up 0 12 Min 0

t2 Shortest downtime of compressor 0 60 Min 0

t3 Forced start-up time after energized after a power failure of 15h 2 8.0 Hour 2

A0 Setting range of high and low temperature alarm

1 20 5

A1 Power-on alarm and delay in defrosting alarm

0 1 -- 0

A2 Alarm delay 0 30 Min 15

dF0 Defrost cycle 2 24 Hour 8

dF1 Defrost time 0 240 Min 0

ct0 Start-up time with failure of sensor 0 60 Min 15

ct1 Downtime with failure of sensor 1 60 Min 8

AH Temperature of high temperature alarm St- A0 St+ A0 8

AL Temperature of low temperature alarm St- A0 St+ A0 2

SP1 Parameter for restarting forced operation after power failure

-10 10 10

SP2 Parameter for restarting forced operation after power failure -10 10 2.5

24

r0 for controlling temperature difference

A parameter to control the start-up and stop of the compressor.

Refer to description of the parameter St.

r1 for setting maximum temperature

To keep the setting range of control temperature St not above the parameter value of r1.

Caution: minimum of r1 cannot be set to be below parameter r2, and it will vary with the variation of r2.

r2 for setting the minimum temperature

To keep the setting range of control temperature St not below the parameter value of r2.

Caution: maximum of r2 cannot be set to be above the parameter r1, and it will vary with the variation of r1.

CAL, calibrated temperature of the sensor

Calibrate the error of the sensor

The temperature displayed is equal to the actual value of the measured temperature plus the value of CAL.

t1, delay in start-up

When the compressor is started for the first time, it shall be started with a delay time of t1.

t2, shortest downtime of the compressor

After operation of the compressor is stopped, it can be started again after a delay of time t2.

If t2 = 0, the delay is cancelled (not related to delay in start-up).

t3, forced start-up time after energized after a power failure of 15h

In case of a power failure over 15h, and when energized again, the compressor is required to be in continuous operation for a time of t3 before it has a downtown of 2h.

t3=0 indicates no forced start-up when energized.

A0, setting range of high and low temperature alarm

Setting range of parameters AH and AL shall be between (St A0) and (St + A0).

25

If St=5 and A0=6, then parameters AH and AL can only be adjusted between -1 and 11.

A1, power-on alarm and delay in defrosting alarm

The parameter is invalid in mode A.

A2, alarm delay

The parameter is invalid in mode A.

dF0, defrost cycle

When the compressor has a total running time of over dF0, defrosting is started.

dF1, defrost time

After defrosting is started and the defrosting time reaches dF1, the defrosting is stopped.

If dF1=0, the defrosting function is invalid.

ct0, start-up time with failure of sensor

In case of failure of the sensor, run automatically a start-up time of ct0 and a downtime of ct1, and repeat the cycle.

When ct0=0, the downtime continues.

ct1, downtime with failure of the sensor

Refer to ct0.

AH, temperature of high temperature alarm

When the measured temperature is above the set value of AH and after 10h, it still remains above AH, high temperature alarm occurs. Or when the measured temperature is above +10 , the mode of high temperature alarm occurs:

AL, temperature of low temperature alarm

when the measured temperature is below the set value of AL and after 1h, it still remains below AL, low temperature alarm occurs. Or when the temperature is below -0.5 , low temperature alarm occurs.

SP1 SP2, parameters for restarting operation after the controller has power failure

26

After the controller has a power failure of 12h, and when it is started again, the program for controlling is forced to be run as follows:

1. Forced start-up for 3h first,

2. Running 2h with SP1 as the control temperature,

3. Running 2.5h with SP2 as the control temperature,

4. Forced shutdown for 0.5h at last.

After completion in the above orders, return to the normal operating mode.

In case of temperature below 1.0 during forced running of the program, return to the normal operating mode and forced running of the program ended in advance.

The mode is only valid in mode A.

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Administration menu in mode B


r0 Control temperature difference 0.5 5.0 2

r1 Max. temperature can be set r2 50 8

r2 Min. temperature can be set -50 r1 2

CAL Calibrated temperature of sensor -3.0 3.0 0

t1 Delay in start-up 0 12 Min 0

t2 Shortest downtime of compressor 0 60 Min 7

t3 Forced start-up time after energized after a power failure of 12h 0 8.0 Hour 0

A0 Setting range of high and low temperature alarm

1 20 6

A1 Power-on alarm and delay in defrosting alarm

0 1 -- 1

A2 Alarm delay 0 30 Min 1

dF0 Defrost cycle 2 24 Hour 8

dF1 Defrost time 0 240 Min 0

ct0 Start-up time with failure of sensor 0 60 Min 15

ct1 Downtime with failure of sensor 1 60 Min 8

AH Temperature of high temperature alarm St- A0 St+ A0 8

AL Temperature of low temperature alarm St- A0 St+ A0 2

SP1 Parameter for restarting forced operation after power failure

-10 10 10

SP2 Parameter for restarting forced operation after power failure -10 10 2.5

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r0 for controlling temperature difference

A parameter to control the start-up and stop of the compressor.

Refer to description of the parameter St.

r1 for setting maximum temperature

To keep the setting range of control temperature St not above the parameter value of r1.

Caution: minimum of r1 cannot be set to be below parameter r2, and it will vary with the variation of r2

r2 for setting the minimum temperature

To keep the setting range of control temperature St not below the parameter value of r2.

Caution: maximum of r2 cannot be set to be above the parameter r1, and it will vary with the variation of r1.

CAL, calibrated temperature of the sensor

Calibrate the error of the sensor

The temperature displayed is equal to the actual value of the measured temperature plus the value of CAL.

t1 delay in start-up

When the compressor is started for the first time, it shall be started with a delay time of t1.

t2, shortest downtime of the compressor

After operation of the compressor is stopped, it can be started again after a delay of time t2.

If t2 = 0, the delay is cancelled (not related to delay in start-up).

t3 forced start-up time after energized after a power failure of 6h

In case of a power failure over 6h, and when energized again, the compressor is required to be in continuous operation for a time of t3.

t3=0 indicates no forced start-up when energized.

Caution: if the control temperature is above 0 , when the measured temperature PV <=2 , the machined is forced to be stopped.

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A0, setting range of high and low temperature alarm

Setting range of parameters AH and AL shall be between (St A0) and (St + A0).

If St=5 and A0=6, then parameters AH and AL can only be adjusted between -1 and 11.

A1, power-on alarm and delay in defrosting alarm

Valid only in mode B

When energized for the first time and defrosting, the temperature of the cabinet will probably higher than that of the alarm setting value.

When A1=1, no alarm occurs during energizing for the first time and defrosting and only after the temperature is below than the control temperature (St) will alarm be started.

When A1=0. once the temperature is above AH or below AL, alarm occurs immediately.

A2, alarm delay

Only valid in mode B

When the temperature is above AH or below AL, no immediate alarm occurs, but it occurs when the temperature has been continuously above AH or below AL for duration of A2.

When A2=0, alarm delay is cancelled.

dF0, defrost cycle

When the compressor has a total running time of over dF0, defrosting is started.

dF1, defrost time

After defrosting is started and the defrosting time reaches dF1, the defrosting is stopped.

If dF1=0, the defrosting function is invalid.

ct0, start-up time with failure of sensor

In case of failure of the sensor, run automatically a start-up time of ct0 and a downtime of ct1, and repeat the cycle.

When ct0=0, the downtime continues.

ct1, downtime with failure of the sensor

Refer to ct0.

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AH, temperature of high temperature alarm

When the measured temperature is above the set value of AH, high temperature alarm occurs.

AL, temperature of low temperature alarm

When the measured temperature is below the set value of AL, low temperature alarm occurs.

Parameters SP1 and SP2 are invalid in mode B.

Inquiry to the maximum and minimum temperature:

Hold the button for 3s, and the maximum temperature begins to be displayed by flashing for 3s.

Hold the button for 3s, and the minimum temperature begins to be displayed by flashing for 3s.

Clear maximum and minimum temperature records:

Hold simultaneously buttons and for 3s, and the maximum and minimum temperature records are cleared, and CLr is displayed at the same time on the display screen for 2s.

Lock and unlock the controller

In case of no any button operation, the controller will be automatically locked within 3min while the buzzer will sound for about 0.5s.

Hold simultaneously buttons and Fn for 1s, and the locked controller will be unlocked or the unlocked controller will be lock, while the buzzer will sound for about 0.5s.

When the controller is locked, no operation can be performed on it and only after it is unlocked can operation on it be performed.

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Function procedure

Before vaccine is put into the vaccine refrigerator, the ice lining on four sides shall be frozen. To ensure freezing of ice lining on four sides, carry out the following operation:

1. Set the external thermostat to be 3 .

2. Inspect the temperature indicated by the thermometer. (it must be between 2 ~5 )

Temperature inside the vaccine chamber must be continuously monitored with a thermometer and the temperature must be kept within the range of 2 ~8 .

The temperature shall be always be set between 2 ~5 due to tolerance of the thermostat.

Be sure to use the ice box inside the vaccine box.

In case of removal of the plug of the vaccine refrigerator or power failure, wait 5min before plugging in again.

(Caution : if the vaccine refrigerator has been placed flat or tilted for some time, it shall be kept upright for 24h before plugging in again.)

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Brief description of thermostat principle

When the internal temperature is above the set value, the compressor is in automatic operation controller by the thermostat. The temperature becomes lower and lower over time. When it reaches the set value, the compessor stops working.

With the working cycle above, the internal temperature can be controlled to be around the set temperature.

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System troubleshooting

1 System troubleshooting

1.1 Maintenance of vaccine refrigerator

(1) Inspect the whole circuit of the vaccine refrigerator to make sure whether there is any falling off of wire connector, damage to the wire or shortcircuit.

(2) Inspect the insulating layer of the vaccine refrigerator. Under normal circumstances, the resistance is over 2 megaohm; in case of a resistance less than 2 megaohm, further inspection of the resistance of the vaccine refrigerator is required. Set the voltmeter to R1 ohm shift, and plug the two pen voltage testers of the voltmeter into terminal L and N respectively to check the indicated value. The normal value shall be several ohm to tens of ohms. A zero ohm means shortcircuit of the vaccine refrigerator or shortcircuit brought by improper operation of the compressor/fan motor. Repair it after finding out the cause. A too large or infinite resistance means a broken circuit and please inspect it to have the problem settled.

After implementation of the above inspection, the vaccine refrigerator will be free of electrical failure and you can have it connected to power for further inspection.

1.2 Cause of electric leakage of vaccine refrigerator

(1) Electric leakage of the compressor : main due to violent vibration. Motor coil of the compressor contacts the shell, which causes falling off of coating of the plastic wires on some parts, thus contacting the shell. Other causes may include too high voltage, too low voltage, adverse cases for vaccine refrigerator (too high temperature, too poor ventilation and heat emission), and failure of the thermal protection device, etc. All these may cause overheating of the motor coil, loose insulating materials, or damage to insulating layer so that electric leakage occurs.

(2) Electric leakage of wiring terminals of the motor : wiring terminals of hermetic compressor are made of ceramic fired at high temperature from soda glass, and high polymer is filled around the wiring terminal. Linear expansion coeffiecients of the terminal and the insulating material shall be the same and the insulating resistance between the terminal and the shell is required to be over 0.5million ohms. Cause for electric leakage on the terminal is damage to the soda glass or that there exists conductive materials (such as water and dirt, etc).

In case of external electric leakage of the compressor, clean the compressor with CCL4 or alcohol. In case of internal electric leakage of the compressor, replace it.

(3) Electric leakage of the thermostat : too long operation time, too high temperature, too much dirt or high humidity may cause electric leakage. If leakage occurs to the thermostat indeed, replace the thermostat.

(4) Electric leakage of starter relay : during installation and maintenance, bolt of the relay conductor easily contacts the shell, thus causing electric leakage. If any improper relay operation is found, inspect it. In case of leakage, connect again and place a piece of insulating paper under the bolt.

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(5) Electric leakage of the fan : too high ambient humidity or improper operation of the control device for the fan during the application of the vaccine refrigerator will burn the fan after it has been working for a long time, thus causing electric leakage. Measure the insulating resistance between each wiring terminal and cabinet of the vaccine refrigerator with the voltammeter. Too small resistance means a electric leakage caused by too high humidity ; a zero resistance means a burned or shortcircuited fan coil. Please replace the fan.

1.3 Troubleshooting by observation

(1) Under normal circumstances, temperatures around surface of the evaporator of the vaccine refrigerator are almost the same and the frost layer has similar thickness. If there is no frost on surface of the evaporator (or the whole internal wall of a bed-type vaccine refrigerator) or on a small part on its top, the cooling system may have a fault including insufficient refrigerant or leakage.

(2) Inspect the system piping to make sure there is no leakage, especially on the connector. Refrigerant with a small amount of refrigeration oil has good permeability. If case of occurence of leakage, oil stain will exist on the leakage spot.

1.4 Troubleshooting by sound

(1) When the vaccine refrigerator is in normal operation, high-pressure liquid refrigerant flows into the low-pressure evaporator through the capillary, and sound of air flow and water flow can be heard. When opening the door of the vaccine refrigerator and getting close to the evaporator, the sound aboved mentioned can be heard. No sound or some occassional sound means leakage or insufficient filling of refrigerant in the system.

(2) After power is connected, listen to the sound of the operation of the compressor to make sure whether the sound is normal. A low-pitched buzzing means abnormal starting of the motor. A rattling noise means damage of the suspended spring in the compressor or tilt operation of the compressor. In case of occurence of the above faults, replace the compressor.

1.5 Troubleshooting by touch

(1) Touch the cover of the condenser, and after continuous operation, the temperature on top of the cover is the highest ; and the temperature of the bottom is almost the same as the indoor temperature. The temperature is related to the ambient temperature. In winter, the temperature is lower, so is the temperature of the condenser, and only a small part feels warm. In summer, the temperature is higher, so is the temperature of the condenser cover, and the whole condenser feels warm.

(2) The high-pressure exhaust pipe has higher temperature, so in summer, when it is toughed with hand, it feels hot ; and so does it in winter. The low-pressure inlet pipe has lower temperature. In summer, dewdrops appear on the pipe wall, and when it is touched, it feels cool ; it feels even colder when touched in winter.

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1.6 Troubleshooting by position

1) If the vaccine refrigerator is not level or the ground is soft, adjust the foot or make the ground solid.

2) In case of noise caused by loose bolt between the foot and the cabinet of the vaccine refrigerator, fasten the bolt.

3) In case of noise caused by aged rubber washer or loose fixing clamp of the compressor, replace the rubber washer or the fixing clamp.

4) If the pipe collide with the refrigerator cabinet or they collide with each other, related adjustment shall be implemented to get rid of the noise.

5) In case of noise caused by stuck fan blades, get rid of the barrier around the fan or adjust the fan blade.

6) In case of noise caused by loose fan support, fasten it.

1.7 Analysis of poor refrigerating effects and solution

(1) Inspect the set value of the thermostat, and if it is not set within the range of 2 ~5 ,set it to be 3 .

(2) Inspect whether back and top of the vaccine refrigerator are too close to the wall ; whether it has direct sunlight or is close to heat sources ; whether the indoor temperature is too high ; whether the condenser is blocked by cloth, paper or dirt. Any of the above problems will have impact on heat emission of the condenser to reduce its refrigerating capacity.

(3) Inspect whether whether too much vaccine is placed in the vaccine refrigerator. The placement of hot or too much vaccine is bad for the circulation of the cold air. Only after the hot vaccine is cooled can it be placed into the vaccine refrigerator.

(4) Inspect whether the door of the vaccine refrigerator is closed, the door seal is too dirty or the door has bad sealing. Remove the dirt and add a small amount of talc powder.

(5) Frequent open and closing of the door of the vaccine refrigerator and open of the door for a long time will reduce the refrigerating capacity.

1.8 How to settle the problem of bad sealing by seal

In case of too many dirts or bad sealing, clean the seal with cloth dipped in warm water. After the cleaning, a small amount of talc powder shall be added. If there is still gap, blow the external surface of the seal with a hair dryer to heat it and keep the temperature between 50 ~60 . Press the seal to recover it, and by pressing space around the seal with the hand, the seal can be recovered. If the method is invalid, stuff a piece of sponge around 10mm wide, 5mm thick and a bit longer than the gap into the seal, that is, teh position between the seal bottom and the door washer. The sponge will raise the gap position and it will adhere to the vaccine refrigerator body like at other positions.

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1.9 Why vaccine refrigerator cannot be used at low temperature

When the ambient temperature is below zero, lubricating ability of the refrigeration oil in the compressor of the vaccine refrigerator is reduced and it is difficult or even impossible to start the compressor, or the compressor may be damaged.

1.10 How to know about failure in motor of compressor

It is very easy to find out motor failure by inspecting resistance of the coil. By connecting the ohmmeter to terminals of common and run , resistance of the coil is measured. An infinite resistance value means a broken circuit of the coil. If the value of the resistance of the coil is much smaller than that of the motor, the motor must be short-circuited or the winding have been burned.

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1.11 Fault analysis of vaccine refrigerator and maintenance

Fault Cause Solution

The compressor cannot be started

1. Blown fuse

2. Poor contact between the plug, socket and cable. Broken cable.

3. Too low voltage, 10-15% below the rated voltage

4. Mistaken setting of the thermostat

5. Failure in the thermostat

6. Failure in or damage to the starter relay or thermal protection device

7. Broken starting coil or operating coil in the motor

8. Burned motor or blocked rotor and starter in the compressor

9. Leakage in the high-pressure air valve or the shaft is locked

1. Inspect whether it is short-circuited: in case of short circuit, correct the error; if not, replace with applicable fuse.

2. Inspect and fix the connection, or replace it

3. Keep operation until the voltage is raised to the rated value or add a voltage stabilizer.

4. Reset the thermostat


6. Replace the starter relay or thermal protection device

7. Measure with the R×1 shift of a multimeter, and in case of broken wire, replace the compressor.



Too frequent starting of the compressor and too long operation time, but the temperature inside the vaccine refrigerator drops at a too slow speed

1. Too large space between the thermostat probe and the evaporator

2. Failure in the thermostat

3. Too much vaccine stored in the vaccine refrigerator, too frequent open and close of the door and the door is open for too long

4. Too high ambient temperature, too high humidity and blocked air flow

5. Too thick frost layer on the evaporator

6. Insufficient refrigerant or

1. Adjust the position of the probe to make it close to the evaporator cover.


3. Reduce the amount of vaccine stored and the time to open the door, and shorten the time when the door is open.

4. Install the vaccine refrigerator at a suitable position with good ventilation

5. Regularly defrost

6. Inspect or add refrigerant

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leakage.

7. Reduced efficiency of the compressor

8. The dry filter is blocked.


8. Replace with a new dry filter

The compressor keeps running and the temperature inside the vaccine refrigerator is too low.

1. Temperature of the thermostat is set to be too low.

2. The starter contact is stuck.

3. Improper position of the thermostat probe, thus causing maladjustment

4. Reduced efficiency of the compressor

1. Adjust to a suitable temperature

2. Repair or replace it

3. Adjust to a suitable position


The compressor is buzzing and cannot be started with repeated tripping of the thermal protection device

1. Too low voltage

2. Failure in starter relay

3. Broken starting coil in the starting motor

4. The compressor is out of operation.

1. Install a voltage stabilizer and adjust it to the rated value

2. Replace the starter relay


4. Axial piston in the compressor is blocked, and it shall be replaced

After operation for a short time, the overload protection device is disconnected.

1. Too high voltage

2. Improper overload protection device and early tripping

3. The starter contact is stuck

4. Short circuit of the compressor

5. Mechanical failure in the compressor

6. Too high temperature around the compressor

1. Install a voltage stabilizer and adjust it to the rated value

2. Replace the overload protection device

3. Replace the starter relay



6. Increase space for heat emission

Too loud noise during operation of compressor

1. Soft ground

2.Unstable and not flat cabinet of the vaccine

1. Reinforce the ground

2. Stabilize body of the vaccine refrigerator

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refrigerator

3. Resonance caused by the friction between piping and body of the vaccine refrigerator

4. Loose fixing screw of the compressor

5. Too tight, too loose or aged shock absorber for fixing the compressor

6. Too loud noise in the compressor or broken suspended spring for reducing shock.

3. Remove the pipe to avoid friction

4. Suitably fasten the screw

5. Adjust tightness of the shock absorber or replace the shock absorber


No frost on the evaporator 1. Serious leakage of refrigerant.

2. The capillary or the system is blocked with dirt.

1. Inspect for leakage, repair welding and add refrigerant.

2. Clean the capillary or replace the filter

Insufficient frost on evaporator

1. Little leakage of the refrigerant.

2. Blocked with dirt, but not serious

3. Reduced refrigeration capacity of the compressor

1. Inspect for leakage, repair welding and add refrigerant.

2. Clean the capillary and filter


Too rapid frosting, too thick frost layer or icing of the evaporator

1. Vaccine stored in the vaccine refrigerator is with water (not dry).

2. Too much vaccine stored in the vaccine refrigerator

1. Dry the vaccine after it is cleaned before placing it into the refrigerator.

2. Only vaccine with suitable amount is stored.

Electric leakage on body of the vaccine refrigerator, and a tingling when touched with hand

1. The body of the vaccine refrigerator has no earthing.

2. Binding post of the compressor contacts the shell of the cabinet, thus causing short circuit.

3. Damping of component of the electrical system, thus causing reduced insulating

1. Earthing as specified


3. Inspect carefully step by step. If the insulating capacity is seriously damaged, replace the component; remove the damp component and place it into a drying cabinet for

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capacity and electric leakage

drying.

Electric leakage of the fan 1. Too high ambient temperature or reduced insulating capacity of the insulator

2. Short-circuit between fan coil or burned fan coil

1. Replace the fan

2. Replace the fan

Too loud noise in the fan 1. Fan blade is stuck or fan support is loose.

2. Too large space between fan shafts

1. Clear barrier around the fan or fasten the support.

2. Replace the fan

Fan is not running 1. Inspect whether the connector is falling off.

2. Inspect whether the fan has been burned.

1. Replace the fan

2. Replace the fan

Electric leakage of thermostat

1. Too longer operation time

2. Too dirty environment

3. Too high humidity


2. Clear dust with a brush

3. Keep the thermostat dry and control the ambient humidity

Thermostat failure 1. Leakage of temperature sensitive medium

Replace the thermostat

Poor contact between the temperature-sensing probe and the evaporator

Improper installation position of the probe or change in the position during transportation

Reinstallation

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1.12 Fan replacement procedure

(1) Disconnect the power and open the fan protection cover.

(2) Unscrew the bolt of the fan with a straddle wrench or a universal tool.

(3) Loosen the fan blades and take them out.

(4) Take out the fan from between the compressor and the pipe.

(5) Install a new fan from between the compressor and the pipe and install the fan blades in position before fixing them with a straddle wrench or a universal tool.

(6) Trial operation; inspect whether the fan is in normal operation and whether the blades are blocked.

(7) During the removal of the fan, remember not the bend or damage the pipe.

1.13 Thermostat replacement procedure

(1) Disconnect the power.

(2) Remove the protection cover on the side.

(3) Loosen the clamp nut.

(4) Hold the bottom of the temperature-sensing probe and pull it out downwards.

(5) Replace with a new thermostat.

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22 CCoommmmoonn ffaaiilluurreess iinn vvaacccciinnee rreeffrriiggeerraattoorr

2.1 The vaccine refrigerator cannot be started.

With power on, the vaccine refrigerator cannot be started. First determine whether the failure is caused by internal or external factors. Including:

(1) External factors

Blown fuse, poor contact between the plug and the socket or too low voltage.

(2) Internal factors

Electrical failures in the vaccine refrigerator (usually caused by falling off of wire terminal or poor contact).

Thermostat (with burned contact or damaged switching elements, etc).

Poor starting capacitor.

Poor starter relay or overload protector. Poor starter is usually caused by burned contact or falling off of weld; poor thermal protection device is usually caused by burned contact or poor heating wire.

Winding of the motor is burned.

The shaft of the compressor is damaged and block the cylinder.

2.2 Improper working of the vaccine refrigerator

With power on, the vaccine refrigerator is started, but after several seconds or 1~2 minutes, it automatically stops before restarting after several minutes. It stops works within a short time after starting. Repetition goes on and it is impossible for normal operation. The following several causes may cause the problem:

(1) Large voltage fluctuation

A voltage of 220V is required for normal operation. If the voltage is too high, the current of the starter will correspondently increase. When the voltage exceeds the allowable value, the starting contact will keep connected for a long time and it cannot be released (under normal circumstances, the starting coil of the motor is disconnected within 1s after starting). This will rapidly increase the coil temperature, and then the thermal protection device is disconnected and it stops running. When power is off, the temperature of the thermal protection device rapidly falls, and when it reaches the reset temperature, power is connected. At this time, if the contact is not released, the starting contact may have close contact and mistaken connection, which may cause vibration of the compressor; the thermal protection device is disconnected after a short time.

(2) Too high operating current intensity

A vaccine refrigerator with too large operating current cannot be in normal operation. It may caused by the following two causes:

First, the vaccine refrigerator automatically stops after several seconds after it is started, and then it is restarted again after several minutes before it stops again. If repetition goes

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on, and after a long time, the motor or the starter and the thermal protection device will be burned. The main cause is the short circuit in some part of the starting coil.

Second, after running for a certain period of time after the vaccine refrigerator is started, it automatically stops before the temperatures falls to the temperature needed. After a few minutes, the vaccine refrigerator is started again and power consumption is greatly increased. The cause is the poor insulation around the motor windings.

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3.1 Requirements on refrigeration equipment

The compressor, condenser, evaporator and dry filter shall be the special type for R134a vaccine refrigerator, and they cannot be mixed up.

3.2 Requirements on repairing equipment

(1) Evacuator and filler shall be special for R134a.

(2) No special requirement on other equipment (such as pressure gauge), however, if they are applied in R134a vaccine refrigerator, they are not allowed to be applied for other purposes.

3.3 Maintenance procedures

(1) Operation method for repairing equipment (refer to the operating instruction).

(2) Special requirements

Interval between turning on the compressor and beginning evacuating shall not exceed 10min.

The evacuating duration shall not be less than 45min.

If leakage occurs on high-pressure end of the vaccine refrigerator, it can be repaired. Before welding, blow in N2 (nitrogen) with high purity. If leakage occurs on the low-pressure end, inspect the pressure of the system; if the system has no pressure, it shall be discarded, and a new vaccine refrigerator shall be bought; if there is pressure, it can be repaired.

3.4 Procedure for replacement of R134a compressor

(1) Disconnect the power, and open the protection cover with a Phillips screwdriver or a universal screwdriver.

(2) Remove electrical components of the compressor.

(3) Unscrew the 4 assembling bolts of the compressor with a straddle wrench or a universal tool.

(4) Take off the compressor.

(5) Install a new compressor and filter dryer and fax them by welding. The system shall be open for duration not over 10min.

(6) Connect the R134a recovery device to the pipeline on lower side of the compressor before evacuating. The evacuating duration shall not be less than 45min.

(7) Pour R134a refrigerant into the system according to the former refrigerant charge.

(8) Inspect whether there is leakage at the welded point with soapy water with foam.

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(9) Wipe off welding powder and welding flux with clean gauze.

(10) Connect the electrical control device of the compressor.

(11) Install and adjust the thermostat.

(12) Turn on the power for commissioning and check whether the unit is in normal operation.

12.3.5 Procedures for installation and brazing of compressor

(1) Install a new compressor.

(2) No direct inhalation of air into the compressor is allowed for inspection or other tests.

(3) When replacing with a new compressor during maintenance, the sealing plug shall be opened at last and brazing and evacuating shall be implemented immediately.

(4) When taking off the sealing plug of the compressor, and if there is no sound of air flow (no pressure), the compressor shall not be put into application.

(5) If no sealing plug is installed in the compressor, the compressor shall not be put into application.

(6) Hands of the maintenance operator shall be free of oil.

(7) Only before application shall the filter dryer of the vaccine refrigerator be opened.

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4 Application and maintenance of vaccine refrigerator

4.1 Product characteristics

(1) The vaccine refrigerator uses refrigerant R134a completely free of CFC (chlorofluorocarbon), with an ozone depetion coefficient of [ODP (ozone depletion potential)] 0.

Design with new climate type: the vaccine refrigerator has a design with wide temperature range. At temperature below 45 (100 ), it can be freely started and stopped.

(2) Design with a new refrigerating system: a two-way refrigerating system is applied to improve the refrigerating speed and extend the service life of the compressor.

4.2 Notice for use

(1) The vaccine refrigerator must be kept level, and when it is moved, the angle of inclination shall not be over 45°so that the sliding door will not slide out of the guide and cause accidents.

(2) The space between the vaccine refrigerator and other items shall be over 30cm to allow for ventilation and heat emission.

(3)

(4) The vaccine refrigerator shall be placed at places with good ventilation, away from heat sources and without direct sunlight.

(5) Before application for the first time, the vaccine refrigerator shall be in operation for a certain period of time (6h in summer and 4h in winter). When the temperature inside the vaccine refrigerator reaches 2 or below, the vaccine can be placed into it. If the vaccine is placed into the vaccine refrigerator too early, it may be damaged, because the temperature inside the refrigerator is still higher.

(6)

(7) Place reasonably the vaccine by category and try to control the frequency and time of opening door to reduce refrigerating loss and power consumption.

(8) There are two feet at the bottom of the vaccine refrigerator to make adjustment on uneven floor. If frequent moving is required, place the vaccine refrigerator on a base with trolley. This type of vaccine refrigerator is usually used outdoors, so make sure the plug is fixed to avoid necessary loss caused by unfixed plug.

(9) It is not allowed to store food, beverage or any other thing in the vaccine refrigerator.

(10) sunlight. Regularly clean the inside and outside of the vaccine refrigerator, especially the part of the engine room, including the condenser and the compressor, etc.

4.3 Safety notice of the product

(1) The vaccine refrigerator requires an independent earthing circuit with a minimum

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current-carrying capacity of 5A.

(2) If the cable is to be extended, the extended line shall have a area of not less than 1.5mm2 for the cross section.

(3) Reliable earthing is required for the vaccine refrigerator; the earthing wire is not allowed to be connected to water pipe and gas pipe.

(4) If power of the vaccine refrigerator is disconnected, wait at least 5min before the refrigerator is started again, otherwise, the compressor or the refrigerating system will be damaged.

(5) Explosive materials, inflammables, volatile matters, glass container filled with liquid, alkali or corrosive acid are not allowed to be stored in the vaccine refrigerator.

(6) Children are not allowed to play inside the refrigerator cabinet to avoid choke or damage.

4.4 Maintenance

Defrosting: after being put into application for some time, a layer of frost appears in the inner tank. If the layer of frost is too thick, the refrigerating effects will be affected and the power consumption will be increased.

(1) Regularly(when the frost layer is 5mm thick) get rid of the frost with a plastic shovel.

(2) When defrosting, disconnect the power, take out the vaccine stored in the vaccine refrigerator and placed it in a place with low temperature. To accelerate defrosting, a container containing warm water can be placed inside the cabinet.

(3) After the layer of frost melts, pull out the drain plug to empty the water, and then dry the vaccine refrigerator by wiping.

(4) Cleaning: for sake of safety, disconnect the power before cleaning to avoid electric shock or damage to the vaccine refrigerator.

(5) When cleaning the vaccine refrigerator, clean it with a piece of soft cloth or sponge dipped with clean water or soapy water (or non-corrosive neutral detergent). After cleaning, dry the vaccine refrigerator by wiping with cloth to avoid rust.

(6) To ensure good refrigerating effects, please regulars clean the condenser, the compressor and dust-proof components inside the engine room with a soft brush. (clean the dust-proof components every 2~3 days)

(7) Downtime: if the vaccine refrigerator is out of operation for a long time, disconnect the power, clean it with methods above mentioned, and open its door until it is dry before it is finally in safe-keeping.

4.5 Standard maintenance procedures

(1) Clean cabinet of the vaccine refrigerator: remove the board on the cabinet and the protection cover on the back with a Phillips screwdriver. Clear dusts from the condenser, fan, compressor and thermostat with a brush. Clean it by wiping and avoid damage to the pipe and electrical parts.

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(2) Connect the power, and inspect whether the vaccine refrigerator is in normal operation. In case of any abnormal case found, inspect it and repair it.

(3) Inspect all brazed joints. In case of falling off of black paint or rust, polish the surface slightly with polishing paper 0#. When getting rid of rust, clean with a piece of clean towel. Then apply acid-soluble paint on the welded joint and pipes with a brush.

(4) Inspect the foot; in case of any damage, replace it.

(5) Inspect the power line; in case of any abrasive wear or damage, replace it.

(6) Inspect whether the resistance of the earthing resistor is in normal operation with a multimeter.

(7) Inspect the insulation with a multimeter; in case of any abnormal case found, inspect the circuit and each component.

(8) In case of damage to the trademark or loss, replace with a new trademark of Haier.

(9) Clean the inside and outside of the vaccine refrigerator. If the vaccine refrigerator is out of operation for a long time, dry off the water on it, put it into a plastic bag and place it in a dry storehouse with good ventilation. Remember to place it on flat floor.

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5.1 Tools and equipment for repairing vaccine refrigerator

(1) Recycling machine

(2) Nitrogen gas (N2) container, oxygen (O2) container, acetylene container and torch

(3) Thermometer

(4) Voltmeter

(5) Pen voltage tester

(6) Manifold pressure gauge

(7) Flathead screwdriver

(8) Phillips screwdriver

(9) Needle nose pliers (sharp nose pliers), diagonal pliers and sealing pliers

(10) Hansen valve

(11) Pipe cutter

5.2 Notice for use

R134a filling equipment is only special for R134a refrigerant.

(1) It is not allowed to fill R134a refrigerant with R12 filling equipment.

(2) Please keep the pliers, pipe cutting device and Hansen valve clean and make them free of oil stain.

5.3 Procedures for filling equipment

(1) Preparation before application

Visually inspect whether there is anything abnormal in the recycling machine, etc

Keep all valves connected to the equipment closed until operation is really started.

(2) Evacuate

Connect hose of the recycling machine to the connector of the system

Connect the power

Start the motor

Open all related valves

When the pointer of the vacuum gauge is gradually close to the graduation -1 ,observe the pointer.

Evacuating duration is required not to be less than 45min.

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Close all valves after the completion of evacuating.

Stop the motor

(3) Filling

First determine the filling volume according to the state of the vaccine refrigerator being repaired. (each small graduation on the liquid line means 25g, while each large graduation means 100g)

Open all related valves

Close each valve when the level is raised to the filling volume

(4) Commissioning

After filling, connect the vaccine refrigerator to power for commissioning. Observe whether the vaccine refrigerator is in normal operation.

Disconnect the power

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6 Noise from the vaccine refrigerator

6.1 Noise sources of the vaccine refrigerator

Noise from the vaccine refrigerator comes from thermal expansion and contraction of the compressor, evaporator or condenser; from contact between pipe or their resonance; from the flow of refrigerant; or from shaking of the vaccine refrigerator caused by uneven floor, etc.

6.2 Compressor

Noise from the vaccine refrigerator mainly comes from the compressor. The compressor gives out various sounds, including continuous/discontinuous sound, periodic/non-periodic sound. The sounds have various frequencies, ranging from tens of Hz to thousands of Hz. Causes for the noise in the compressor include:

(1) There are two pieces of flexible steel sheet (air inlet valve and exhaust valve), and when the vaccine refrigerator is being started, each steel sheet will open and close for 47 times every second, thus giving out the vibrating sound. Meanwhile, the open and closing action of the steel sheet makes the sheet contact other parts, which also gives out sound. The continuous buzz heard belong to this type of sound.

(2) When the compressor is being manufactured, space inevitably exists between parts. During the operation of the vaccine refrigerator, the existence of the spaces make some parts contact with each other, thus giving out sound. Especially when it is started and stopped, the force on parts of the compressor greatly changes so that greater sound is produced.

(3) Noise of liquid flow

The operation process of the compressor is a process of continuous air intake and exhaust.

If sudden changes in the intake or exhaust pressure of refrigerant gas occur, the vibrating sound will be produced.

(4) Sound of resonance between parts of the compressor

Sometimes, resonance may be caused between parts of the compressor including the compressor body, the exhaust pipe, the silencing device inside the compressor and supporting spring, etc, and sound is given out.

(5) Collision between the compressor body and the shell

The compressor body is suspended by three springs or supported by the spring inside the shell. When the compressor is started or stopped, the force applied on the compressor greatly changes, and it sometimes makes the body contact the shell, thus giving out sound. The case continues for a short time.

(6) The electromagnetic sound produced by hermetic motor is comparatively smaller.

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6.3 How the sound of water flow is produced?

Answer: when the liquid refrigerant is flowing, especially flowing through the evaporator, it will produce a sound similar to that of water flow. The sound may vary because of the different technologies applied in the structure of the evaporator. If when the vaccine refrigerator is running, the sound is not produced with the evaporator not refrigerating and the condenser not hot, the refrigerant is restricted or there is leakage of the refrigerant.

6.4 Sound of air flow

When the compressor is running, gas is continuously sucked in and discharged. When the liquid refrigerant flows through the capillary, gas injection occurs and the sound of air flow is produced. This kind of sound is normal, but it may vary in different vaccine refrigerators, for the compressor and the evaporator used are different.

6.5 Why clucks or clicking sounds are suddenly produced by the vaccine refrigerator?

Answer: the sound is produced by the thermal expansion and contraction of the condenser and the evaporator, or it is produced by the ice on the surface of the evaporator shock heated or cooled suddenly. The sound may appear in the following cases:

(1) For a new vaccine refrigerator, the internal stress of its materials exists. The material stress will disappear over time and less sound will be produced.

(2) Uneven temperature in the vaccine refrigerator after defrosting.

(3) When the door is opened for taking out the vaccine, the evaporator is heated suddenly.

(4) In several minutes after the vaccine refrigerator is started or stopped, significant changes occur in the temperature of the condenser and the evaporator. Almost all things expand with heat and contract with cold, so the sound is normal.

6.6 Why the noise becomes greater after the vaccine refrigerator has been in service for some time?

Answer: after being in service for half a year or a year, the space by abrasive wear between internal parts will be increased, and the noise from the compressor will also be correspondently increased. After that, during the whole service life of the vaccine refrigerator, the space between parts maintains stable.

6.7 Why the noise becomes greater after the vaccine refrigerator has out of service for some time?

Answer: after the vaccine refrigerator has been out of service for a long time, the crankshaft of the compressor may be stuck by the dirt brought by the lubricant oil or by the lubricant oil frozen because of low temperature. Therefore, the compressor cannot be started or after it is started, it gives out greater noise and the abrasive wear of the

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crankshaft is correspondently increased. It is recommended not to stop operation of the vaccine refrigerator. Sometimes, a new vaccine refrigerator also has such a characteristic. After being in service for some time, the vaccine refrigerator will become normal.

6.8 How to reduce noise from the vaccine refrigerator?

Currently, all types of vaccine refrigerators have problem in noise. Scientists are always trying to find a solution to it, but little success has been achieved. The final solution depends on new technical improvement and development.

6.9 Why the noise from the vaccine refrigerator becomes greater at night?

Answer: the impact of the noise from the vaccine refrigerator on people is related to the ambient noise level. In a crowded city or shop, noise from the vaccine refrigerator will be found to be little, while in a village or a quiet sitting room, the noise will be greater. That is why people find a vaccine refrigerator at home has greater noise than the one in the shop.

6.10 What regulations on noise from vaccine refrigerator have been made by the state?

current vaccine refrigerator industry can achieve, regulations on noise from vaccine refrigerators are provided by the national standard GB8059.1-87: vaccine refrigerator with a capacity of less than 250L shall have a noise level of not more than 52dB (A). The office or other public places we live in every day have much greater noise than vaccine refrigerators.

6.11 Why the noise level of vaccine refrigerator measured at home is not correct?

Answer: environmental conditions for measuring noise from the vaccine refrigerator are not available at home, so the value measured is invalid. Conditions for noise measurement specified in national standards are as follows:

(1) Measurement shall be carried out in semi-anechoic or anechoic rooms without reflection of sound wave.

(2) Place the vaccine refrigerator on a elastic cushion 5~10mm thick.

(3) Before measurement, have the vaccine refrigerator running idle for at least 30min. In case of suddenly stop, restart it and carry out the measurement after 3min.

(4) 4 measurements shall be carried out, which are implemented respectively 1m from the front, the back, the left front and the right front of the vaccine refrigerator, with a measurement height of 1/2 of the height of the vaccine refrigerator; accurate sound level meter is applied (A weighted).

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6.12 What are the differences between the national noise standard 52dB (A) and the standard 42dB by Ministry of Light Industry?

The 52dB(A) in national standard is a sound power level. Under measurement conditions specified in national standards, the average of readings of the sound lever meter under circumstances with greater noise is taken among the noise from vaccine refrigerator measured at the 4 positions, so that the arithmetical mean of the noise at the 4 positions is measured. The value is the average sound pressure level of the noise, and the formula is as follows:

LW = (LPA - 2) + 10 LgS

Wherein, LW sound power level in dB.

LPA- average sound pressure level of the measured surface, in dB

S envelope area of the measured surface, in m2

The standard 42dB by the Ministry of Light Industry is a sound pressure level measured 1m from the door of the vaccine refrigerator. The value plus 10 shall be the approximate value of the sound power level.

The restriction on noise in national standards is stricter and more scientific. Currently, it is required to applied the sound power level specified in national standards for noise from vaccine refrigerators.

6.13 Why noise varies from different types of vaccine refrigerators?

Answer: the noise of each qualified vaccine refrigerator when leaving the factory is within the range specified in national standards. Different types of vaccine refrigerators have different power and different compressors are used in them, so the noise produced varies. Even in vaccine refrigerators of the same type, their compressor may produce different noise, and the noise may have different differences between the national standard 52dB(A), so the noise levels vary.

6.14 Why greater noise when the vaccine refrigerator is started and stopped?

Answer:

(1) When the vaccine refrigerator is being started, the starter relay gives out sound. Acceleration of the motor will cause vibration of the compressor and thus sound is produced.

(2) When the vaccine refrigerator is stopped, the compressor will produce vibrating sound due to inertial rotation.

(3) When the vaccine refrigerator is stopped, the compressor speeds down, and balance is achieved between the high pressure and low pressure at the exhaust pipe and return pipe, so sound is produced by the compressor.

(4) When the compressor is started, great sound will be produced by the hammer-type starter relay in case of low voltage. Even with a voltage stabilizer installed, timely measurement of the voltage is still required. If requirement of stable voltage cannot

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be achieved, there must be problem in quality of the voltage stabilizer. In case of low

For causes above mentioned, sound is produced when the vaccine refrigerator is started and stopped.

6.15 Why sometimes the noise heard from a longer distance is greater than that heard from a shorter distance?

Answer: transmission of noise from the vaccine refrigerator is related to factors including the position of the vaccine refrigerator and the indoor space size, etc. the sound wave produced by the operation of the vaccine refrigerator will reflect when bumping onto walls or furniture. Therefore, the noise heard from a place with longer distance may sometime greater than the one heard from a nearer place. For this reason, it is incorrect to come to a conclusion that the sound is great because it is heard several meters away.

6.16 How to determine that the sound is noise or it is normal?

Answer: generally, noise from vaccine refrigerator within the range specified in national standards is normal. However, if a continuous sound of metal colliding with each other is produced by the compressor, inspect it in time to have it settled.

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7 National noise standards There are related regulations in WHO.

7.1 No obvious noise when the vaccine refrigerator is running

For vaccine refrigerators with a capacity of 250L or below, the sound power level measured by WHO shall not over 52dB(A).

For vaccine refrigerators with a fan, the sound power levels of the noise shall be as follows:

Below 300L

300~400L (incl. 400L)

401~500L (incl. 500L)

7.2 Noise test

In geometric center of the measurement site, place the empty vaccine refrigerator onto an elastic base (elastic rubber pad 5~6mm thick). Set the thermostat to 4, and close the door or cover. Carry out the measurement after the vaccine refrigerator has been in operation for 30min.

During test, if the vaccine refrigerator reaches the temperature and stops, the measurement shall be interrupted, and it will not continue until 3min after the vaccine refrigerator is restarted.

The test shall be implemented in semi-anechoic environment. Other test sites shall satisfy each regulation specified in WHO.

Implementation of noise test is shown in figure 8. Place the sound transmission devices at measurement points 1, 2, 3 and 4 respectively, and measure the sound level with a sound level meter (A weighted). The larger reading shall be taken for calculation of the average value. The arithmetic mean at the above 4 measurement points shall be the average sound pressure level of the noise.

Sound power level of vaccine refrigerator for the noise measurement can be calculated with the test results.

LW = (LPA - 2) + 10LgS

Herein, LW is for the sound power level in dB (with a reference value of 1PW);

LPA is for the average sound pressure level of the surface measured, in dB (with a reference value of );

S is for the envelope area of the surface measured, in m2

Suppose l1, l2 and l3 are respectively the length, width and height of the vaccine refrigerator, and they are in meter.

a I1/2 + d b I2/2 + d c I3/2 + d

If d=1m is taken,

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Then, S= 4(ab+bc+ac)

Positions of the measurement points are shown in table 4.

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8.1 Measurement content

Measurement technologies for vaccine refrigerators include the measurement of refrigerating performance and safety requirements on electrical parts. Before leaving the factory, the following tests shall be implemented: (1) appearance requirements; (2) cooling speed; (3) electric leakage; (4) insulating resistance (in cold state); (5) electric field strength; (6) starting performance; (7) earthing resistance; (8) sealing performance of refrigerating system; (9) documents and attachments.

Ex-factory field tests include: (10) storage temperature; (11) insulating resistance (in wet state and in hot state); (12) electric field strength (in wet state and in hot state); (13) power consumption; (14) noise and vibration; (15) galvanized parts; (16) painted cover; (17) protection against electric shock; (18) cable; (19) door opening force of the vaccine refrigerator; (20) freezing capacity; (21) increase speed of the load temperature.

Type tests include items (1), (2), (8), (9), (10), (13), (17), (18), (20) and (21) and the following items: (22) total effective volume; (23) ice-making capacity; (24) defrosting property; (25) thermal insulating property and anti-condensation; (26) air tightness of the door seal; (27) durability of latch and handle; (28) strength of support or similar parts; (29) materials and odor inside the vaccine refrigerator; (30) firmness of the vaccine refrigerator and transportation test.

8.2 Test methods and instruments

8.2.1 Sealing performance test of the refrigerating system

During the test, place the vaccine refrigerator in a positive pressure room with a temperature between 16~32 . The leak detector is set to be with an annual leakage of 0.5g and each position in the refrigerating system is inspected. Leakage at any point shall not be over 0.5g. Common leak detectors include American GE products----H-25 leak detector and HLD4000 leak detector manufactured by a German company.

8.2.2 Insulating resistance

The test is to inspect the insulating property of the vaccine refrigerator. Apply 500V DC voltage on live parts and accessible metal parts and measure the resistance. The resistance value shall not be less than 2 million ohm.

8.2.3 Electric field strength

The test is to inspect the electric field strength of live parts and all accessible metal parts. Flashover and breakdown devices are used as test equipment, and a voltage of 1650V (50Hz) is applied for 2s. During the test, no flashover or breakdown shall appear.

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8.4.2 Earthing resistance

Inspect the voltage drop of between earthing point and accessible metal parts of the vaccine refrigerator with AC power supply which has a no-load voltage of not over 12V and a current of 10A. Calculate the resistance with the current and voltage drop. The earthing resistance shall not exceed 0.1 ohm.

8.2.5 Leakage current

During test, apply a voltage 1.06 times of the rated one on the vaccine refrigerator and maintain the test under operating conditions. The test is specified in GB4706.1-84 and the leakage current meter is manufactured according to regulations. The leakage current measured shall not exceed 1.5mA.

8.2.6 Noise test

The test is implemented in a semi-anechoic room. Place the vaccine refrigerator onto an elastic base 5~10mm thick in the geometric center of the room. During the test, the vaccine refrigerator shall be kept empty. Set the thermostat to be low and close the door. Run the vaccine refrigerator for more than 30min before implementation of the test. Requirements on the sound power level of the noise from the vaccine refrigerator are as follows: those with a capacity of 250L or below: ; those with a capacity over 250L:

.

8.2.7 Methods for testing refrigerating property

(1) 4 or 6 vaccine refrigerators can be tested simultaneously in a lab. Polyurethane or polystyrene materials which have good thermal insulation property are applied in the enclosure structure of the lab. The lab is equipped with air retreating unit. Air with uniform pressure enter the lab from the perforated ceiling to ensure that the speed of the indoor air flow is not over 0.25m/s, so that the room temperature is kept uniform.

The temperature in the lab can be adjusted within the range of 10~43 .

(2) For requirements on temperature for application of vaccine refrigerators in different climate areas, refer to table 6-1.

Specified ambient temperature and a fluctuation range of ±0.5K shall be kept at each test spot. Within the range of 2m above the test platform, vertical gradient of the temperature shall not exceed 2K/m.

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Table 6-1 Vaccine refrigerators for different climate areas

Climate type Label Suitable temperature( )

Measured temperature( )

Mid temperate zone M 10~27 27

Temperate zone T 15~32 32

Tropical zone H 25~43 43

(3) Ambient humidity: the relative humidity is generally 15~19%.

(4) Test pack: a rectangular test pack with dimensions shown in the following table is used as load for the vaccine refrigerator.

Table 6-2 Test pack for testing property of the vaccine refrigerator

Dimension(mm) Weight (g) Remarks

Small (S) 100×100×50 200

Big (B) 100×100×100 400

(5) Thermometer: platinum resistance thermometers are generally used for measurement of temperature. They include the following two types:

a. When measuring the temperature, place the platinum resistance directly into the test pack;

b. Insert the platinum resistance into the middle of 4 tinned copper posts which have a diameter and a height of both 15.2mm.

Bridges for measuring temperature with an precision of ±0.3K are used as measurement equipment.

(6) Instruments for measuring humidity: relative humidity shall be measured with a wet-bulb thermometer and a dry-bulb thermometer. Place the dry-bulb and wet-bulb thermometers (1.5~2 layers of absorbent gauze is wrapped on the temperature-sensing parts of the thermometer and bottom of the gauze is placed into distilled water) in the wind with a speed of 2.5~3m/s. Record temperature on the dry-bulb thermometer and calculate the relative humidity with the reference table of relative humidity for environmental tests in GB6999-86.

(7) Cooling speed

Place the vaccine refrigerator in a lab with a room temperature of 32 and wait until balance (a temperature difference of ±1K) is achieved between the temperature inside the vaccine refrigerator and the room temperature. Close the door of the vaccine refrigerator, and keep the refrigerator in continuous operation. Record the time needed for the storage temperature tm to reach tm (max.) (With reference to table 13-3), the cooling temperature tm to reach +14 and the freezing temperature to reach its correspondent star level

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respectively. According to related standards, the time for vaccine refrigerators with a capacity of below 250L shall not exceed 2h; while for those with a capacity of 250L~500L, the time shall not exceed 3h.

(8) Freezing capacity

The freezing capacity of the vaccine refrigerator shall not less than 90% of the rated capacity.

(9) Power consumption

Place the vaccine refrigerator in the lab. Room temperature for labs in different climates are respectively as follows: M (mid temperate zone): 27 ; T (temperate zone): 32 ; H (tropical zone): 43 . Duration of the test is 24h. Power consumption of the cold storage and refrigerator shall be less than 115% of the rated value; power consumption of the freezer shall be less than 110% of the rated value.

Other tests to be carried out: measurement of storage temperature

(10) Cold storage and freezer: test of storage temperature and ice-making capacity, etc.

Table 6-3 Storage temperature of vaccine refrigerator

Climate type Climate type Ambient temperature( )

Storage

t1, t2, t3, t4, t5, t6, t7, t8, t9, t10

Mid temperate zone

M 10 2 1, t2, t3, t4, t5, t6, t7, t8, t9, t10

27

Temperate zone

T 15 2 1, t2, t3, t4, t5, t6, t7, t8, t9, t10

32

Tropical zone H 25 2 1, t2, t3, t4, t5, t6, t7, t8, t9, t10

43

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Details of wearing parts

Model SN SPARE PART Chinese name code

HBC-70

1 Compressor NL6.1FT 0070701331

2 Thermostat 0074091494 3 Power Cord 0070402374 4 Combination

line 0070402373

5 Cabin guard 0071210004

6 Filter 0074180002A

HBC-110

1 Compressor NL6.1FT 0070701331

2 Thermostat 0074091494 3

Fan motor EBM220V/60HZ/25W 0075030020

4 Combination line 0070402373


6 Power Cord 0070402374 7

Filter 20G 0074180002A

HBC-200

1 Compressor NL7FT 0070701332

2 Thermostat 0074091494 3

Fan motor EBM220V/60HZ/25W 0075030020

4 Combination line 0070402373


6 Power Cord 0070402374 7

Filter 20G 0074180002A

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Inspired living

Haier Medical & Laboratory Products Co., Ltd.

Room 403D, Brand Building, Haier Industrial Park, No.1 Haier Road

Qingdao China

Website: www.haiermedical.com

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