service manual mf 26 mf 66 - scotsman ice 26-36-46... · scotsman europe - frimont spa via puccini,...

SCOTSMAN EUROPE - FRIMONT SPAVia Puccini, 22 - 20010 Pogliano M.se - Milano - ItalyTel. +39-02-93960.1 (Aut. Sel.)- Telefax +39-02-93550500Direct Line to Service & Parts:Phone +39-02-93960350 - Fax +39-02-93540449Website: www.scotsman-ice.comE-Mail: [email protected]

ISO 9001 - Cert. n. 0080

MF 26MF 36MF 46MF 56MF 66

R 134 A / R 404 A VERSIONNEW PC BOARD

MF 26 from S.N. 05566MF 36 from S.N. 21806MF 46 from S.N. 17078MF 56 from S.N. 25653MF 66 from S.N. 05711

Electronic modularflakers and superflakers

REV. 09/2013

SERVICE MANUAL

LED STATUS REASON WHY – SIGNIFICATION – SIGNIFICATO – Beschreibung

ON STEADY FIXE

FISSO Ständig an

UNIT OFF AT BIN FULL CABINE PLAINE

CONTENITORE PIENO Maschine AUS, Speicher voll!

BLINKING SLOW CLIGNOTANT LENT LAMPEGG. LENTO

Blinkt langsam

I/R BEAM CUTTED FAISCEAU INFRA ROUGE CELLULE NIVEAU GLACE INTERROMPU

RAGGIO INFRAROSSO INTERROTTO Lichtschranke unterbrochen!

BLINKING FAST CLIGNOTANT RAPIDE LAMPEGG. VELOCE

Blinkt schnell

I/R ON AFTER TRIP OFF AT BIN FULL FAISCEAU INFRA ROUGE CELLULE NIVEAU GLACE ETABLI

RAGGIO INFRAROSSO RIPRISTINATO INTERROTTO Speicher entleert, Maschine startet gleich!

ON STEADY FIXE

FISSO Ständig an

NO WATER MANQUE D’EAU

MANCANZA ACQUA Kein Wasser!

ON STEADY FIXE

FISSO Ständig an

TOO HI DISCHARGE PRESSURE/TEMP OR TO LOW ROOM TEMP (< +3°C) COUPURE HP OU TRES BASSE TEMP. AMBIANTE (< +3°C)

FERMATA ALTA TEMP. CONDENSAZIONE O TEMP. AMBIENTE BASSA (< +3°C) Zu hoher Kondensationsdruck oder Raumtemp. < +3°C!

BLINKING CLIGNOTANT

LAMPEGGIANTE Blinkt

DELAY AT START UP (3 min. or 60 min. according to the Jumper setting) TEMPORISATION AU DEMARRAGE (3 min ou 60 min. selon le reglage du chavalier)

RITARDO PARTENZA (3' o 60’ in funzione della regolazione del ponticello) 3 min. oder 60 min. Startverzögerung je nach Jumper Konfig.!

ON STEADY FIXE

FISSO Ständig an

NO, SLOW OR WRONG ROTATION OF DRIVE MOTOR MOTOREDUCTEUR TOURNE A L'ENVERS, NE TOURNE PAS, OU TROP LENTEMENT

MOTORE RIDUTTORE GIRA AL CONTRARIO, NON GIRA O GIRA LENTAMENTE Keine, zu langsame oder schwere Getriebrotation!

BLINKING CLIGNOTANT

LAMPEGGIANTE Blinkt

TOO HI EVAP. TEMP. (> 0C°) AFTER 10' FROM START UP OR TOO LOW EVAP. TEMP. (< -25°C) COUPURE TEMP. EVAP. >0°C APRES 10' DE FONCTIONNEMENT OU TEMP. EVAP. <-25°C

TEMP. EVAP >0 °C DOPO 10' DA INIZIO FUNZIONAMENTO O INFERIORE A -25°C Zu hohe Verd.temp. > 0°C 10 min. nach dem Start oder zu niedrige Verd.temp. < -25°C

ON STEADY FIXE

FISSO Ständig an BLINKING

CLIGNOTANT LAMPEGGIANTE

Blinkt

CONDENSER SENSOR OUT OF ORDER SONDE CONDENSEUR HS

SONDA CONDENSATORE MALFUNZIONANTE Kondensatorfühler defekt!

EVAPORATOR SENSOR OUT OF ORDER SONDE EVAPORATEUR HS

SONDA EVAPORATORE MALFUNZIONANTE Verdampferfühler defekt!

BLINKING ALTERNATE CLIGNOTANT ALTERNE’

LAMPEGGIANTE ALTERNATO Blinkt im Wechsel!

OPTICAL ICE LEVEL CONTROL OUT OF ORDER CELLULE INFRAROUGE NIVEAU GLACE HS

SONDA ALL’INFRAROSSO LIVELLO GHIACCIO MALFUNZIONANTE Lichtschranke defekt!

BLINKING CLIGNOTANT

LAMPEGGIANTE Blinkt

6 OR 12 MONTHS WATER SYSTEM CLEANING REMIND (according to the Jumper setting) RAPPEL NETTOYAGE SYSTÉME HYDAULIQUE APRÉS 6 OU 2 MOIS (selon reglage. chavalier) RICHIAMO PULIZIA CIRCUITO IDRICO DOPO 6 O 12 MESI (In funzione regolazione ponticello)

6 oder 12 Monate Reinigungshinweis für Wassersystem je nach Jumper Konfig.!

BLINKING IN SEQUENCE CLIGNOTTANT EN SEQUENCE LAMPEGGIANTE IN SEQUENZA

Blinken nacheinander!

PURGE CYCLE IN OPERATION (Only on units equipped with purge valve) CYCLE D’ÉVACUATION EAU EN FONCTION (Seulement dans les machine equipées avec vanne de vidange eau)

SISTEMA SCARICO ACQUA IN FUNZIONE (Solo negli apparecchi dotati di valvola di scarico) Spülzyklus läuft, bei Maschinen mit Ablaßventil!

BLINKING CLIGNOTANT

LAMPEGGIANTE Blinken

UNIT OFF DUE TO THE JUMPER ON TEST CONTACTS MACHINE A L’ÂRRET – CONTACTS TEST FERMÉES

MACCHINA FERMA – CONTATTI TEST CHIUSI Jumper Konfig. Im Testmodus!

PUSH AND HOLD THE RED LIGHTED SWITCH OR THE PC BOARD BUTTON FOR MORE OF 5 SECONDS WITH MACHINE IN OPERATION TILL THE SWITCHING OFF OF THE TWO YELLOW LEDS TO RESTART THE CLEANING REMIND COUNTDOWN

APPUYER SUR LE BOUTON ROUGE OU SUR LE BOUTON DE LA CARTE POUR 5 SECONDES AVEC LA MACHINE EN FONCTIONNEMENT JUSQU’A L’ETEINTE DE LES DEUX LEDS JAUNE POUR REINITIALISER L'ALARME JUSQU'AU PROCHAIN DETARTRAGE

PREMERE IL PULSANTE ROSSO O IL PULSANTE DELLA SCHEDA PER PIU' DI 5" CON LA MACCHINA IN FUNZIONE FINO ALLO SPEGNIMENTO DEI DUE LED GIALLI PER FAR RIPARTIRE IL CONTEGGIO PER LA PROSSIMA DISINCROSTAZIONE

Drücken und halten Sie den roten Schalter oder den push button auf der Elektronik, für mehr als 5 Sekunden wenn die Maschine in Betrieb ist, bis die 2 gelben LED´s auf der Elektronik nicht mehr leuchten! Der Erinnerungszyklus für die Reinigung ist somit zurückgesetzt und startet neu!

TABLE OFCONTENTS

12468

10

Page 1

Table of contents pageSpecifications MF 26Specifications MF 36Specifications MF 46Specifications MF 56Specifications MF 66

GENERAL INFORMATION AND INSTALLATION

IntroductionUnpacking and Inspection - Ice makerUnpacking and Inspection - Storage binLocation and levellingElectrical connectionsWater supply and drain connectionsFinal check listInstallation practice

OPERATING INSTRUCTIONS

Start upOperational checks

PRINCIPLE OF OPERATION (How it works)

Water circuitRefrigerant circuitMechanical systemOperating pressuresComponents description

ADJUSTMENT, REMOVAL AND REPLACEMENT PROCEDURES

Adjustment of the evaporator water levelReplacement of the Gear Motor Magnetic SensorReplacement of the auger, water seal, bearings and couplingReplacement of the gear motor assyReplacement of the freezing cylinderWiring diagram MF 26 - MF 36Wiring diagram MF 46 - MF 56 single phaseWiring diagram MF 56 three phaseWiring diagram MF 66 three phaseService diagnosis

MAINTENANCE AND CLEANING INSTRUCTIONS

GeneralIcemakerCleaning instructions of water system

1212121314141415

1618

2122242526

30303032323334353637

393939

SPECIFICATIONS

ice making capacity

ELECTRONIC MODULAR FLAKER MODEL MF 26

Important operating requirements:

MIN MAX• Air temperature 10°C (50°F) 40°C (100°F)• Water temperature 5°C (40°F) 35°C (90°F)• Water pressure 1 bar (14 psi) 5 bars (70 psi)• Electr. voltage• variations from voltage• rating specified• on nameplate -10% +10%

NOTE. The daily ice-making capacity is directly related to the condenser air inlet temperature, watertemperature and age of the machine.To keep your SCOTSMAN FLAKER at peak performance levels, periodic maintenance checksmust be carried out as indicated on maintenance section of this manual.

Page 2

K g .

32 °C27 21 15 10

°C10

21

o

o

32

38

120

115

110

105

100

95

90

85

80

K g .

32 °C27 21 15 10

°C10

21

o

o

3238

120

115

110

105

100

95

90

85

80

ICE

PR

OD

UC

ED

PE

R 2

4 H

RS

.

AIR COOLED MODELS

WATER TEMPERATURE

AM

BIE

NT

TE

MP

ER

AT

UR

E

ICE

PR

OD

UC

ED

PE

R 2

4 H

RS

.

WATER COOLED MODELS

WATER TEMPERATURE

AM

BIE

NT

TE

MP

ER

AT

UR

E

MF 26 AS Air 120* MF 26 WS Water 480*

Start Electric power cons.Amps Kwh per 24 HR

SPECIFICATIONS

Water req.lt/24 HR

Model FinishCond. unit Comp. HP

* A 15°C water temperature

S. Steel 3/8

Basic electr. Amps Watts Nr. of wires Amps fuse

230/50/1 3.2 17 500 11 3 x 1.5 mm2 10

MF 26 - MACHINE SPECIFICATIONS

Page 3

Dimensions:

HEIGHT (less legs) 525 mm.HEIGHT (with legs) 542 mm.WIDTH 563 mm.DEPTH 536 mm.WEIGHT 49 Kg.

SPECIFICATIONS

ice making capacity

ELECTRONIC MODULAR FLAKER MODEL MF 36




2 0 0

1 8 0

1 6 0

1 4 0

1 2 0

K g .

32 °C27 21 15 10

°C1021

o

o

32

38

1 9 0

1 8 0

1 7 0

1 6 0

1 5 0

K g .

32 °C27 21 15 10

DE

10

A 3

8°C

o

AIR COOLED MODELS

WATER TEMPERATURE

AM

BIE

NT

TE

MP

ER

AT

UR

E

ICE

PR

OD

UC

ED

PE

R 2

4 H

RS

.

WATER COOLED MODELS

WATER TEMPERATURE

AM

BIE

NT

TE

MP

ER

AT

UR

E

ICE

PR

OD

UC

ED

PE

R 2

4 H

RS

.

Page 4



SPECIFICATIONS

Water req.lt/24 HR

Dimensions:




S. Steel 5/8


230/50/1 4 20 760 17 3 x 1.5 mm2 10


Page 5

SPECIFICATIONS

ice making capacity

ELECTRONIC MODULAR SUPERFLAKERMODEL MF 46




Page 6

3 1 0

3 3 0

3 1 0

2 9 0

2 7 0

2 5 0

2 3 0

2 1 0

1 9 0

K g .

°C27 21 15 10

°C

1021

o

o

32

38

3 6 0

3 4 0

3 2 0

3 0 0

2 8 0

2 6 0

2 4 0

2 2 0

2 0 0

K g .

32 °C27 21 15 10

°C

10213238

o

o

AIR COOLED MODELS

WATER TEMPERATURE

AM

BIE

NT

TE

MP

ER

AT

UR

E

ICE

PR

OD

UC

ED

PE

R 2

4 H

RS

.

WATER COOLED MODELS

WATER TEMPERATURE

AM

BIE

NT

TE

MP

ER

AT

UR

E

ICE

PR

OD

UC

ED

PE

R 2

4 H

RS

.

32

SPECIFICATIONS


Water req.lt/24 HR


Dimensions:




MF 46 AS Air 320* MF 46 WS Water 1800* S. Steel 1


230/50/1 5.2 29 1200 26 3 x 1.5 mm 162

Page 7

SPECIFICATIONS

ice making capacity



Page 8



7 0 0

6 5 0

6 0 0

5 5 0

5 0 0

4 5 0

4 0 0

3 5 0

3 0 0

K g .

32 °C27 21 15 10

°C

1021

o

o

32

38

6 0 0

5 7 5

5 5 0

5 2 5

5 0 0

4 7 5

4 5 0

4 2 5

4 0 0

K g .

°C

°C10213238

o

o

AIR COOLED MODELS

WATER TEMPERATURE

AM

BIE

NT

TE

MP

ER

AT

UR

E

ICE

PR

OD

UC

ED

PE

R 2

4 H

RS

.

WATER COOLED MODELS

WATER TEMPERATURE

AM

BIE

NT

TE

MP

ER

AT

UR

E

ICE

PR

OD

UC

ED

PE

R 2

4 H

RS

.

32 27 21 15 10


2000 230/50/1 10 34 45 3 x 1.5 mm2 16 400/50/3+N 4 22 40 5 x 1.5 mm2 16

SPECIFICATIONS


Water req.lt/24 HR


Dimensions:




S. Steel MF 56 AS Air 600* MF 56 WS Water 3000*

Page 9

1.5

SPECIFICATIONS

ice making capacity





Page 10

1150

1100

1050

1000

950

900

850

800

750

700

K g .

32 °C21 15 10

°C10

21

o

32

38

1400

1300

1200

1100

1000

900

800

700

600

500

K g .

°C

°C

DE

10

A 3

8°C

o

32

38

AIR COOLED MODEL

WATER TEMPERATURE

AM

BIE

NT

TE

MP

ER

AT

UR

E

ICE

PR

OD

UC

ED

PE

R 2

4 H

RS

.

WATER COOLED MODELS

WATER TEMPERATURE

AM

BIE

NT

TE

MP

ER

AT

UR

E

ICE

PR

OD

UC

ED

PE

R 2

4 H

RS

.

27 32 21 15 1027



230/50/3 7,1 56 4 x 2.5 mm 25 400/50/3 + N 3,4 28 5 x 2.5 mm 163600 80

SPECIFICATIONS


Water req.lt/24 HR


Dimensions:

HEIGHT 850 mm.WIDTH 1065 mm.DEPTH 698 mm.WEIGHT 179 Kg.



S. Steel 2.5

2

2

Page 11

GENERAL INFORMATION AND INSTALLATION

A. INTRODUCTION

This manual provides the specifications and thestep-by-step procedures for the installation, start-up and operation, maintenance and cleaning forthe SCOTSMAN MF 26, MF 36, MF 46, MF 56and MF 66 Modular Icemakers.The Electronic Flakers and Superflakers arequality designed, engineered and manufactured.Their ice making systems are thoroughly testedproviding the utmost in flexibility to fit the needsof a particular user.

4. On models MF 26, MF 36, MF 46 and MF 56remove the top and front panel while on modelMF 66 remove top and sides panels of the unitand inspect for any concealed damage. Notifycarrier of your claim for the concealed damageas stated in step 2 above.

5. Remove all internal support packing andmasking tape.

6. Check that refrigerant lines do not rubagainst or touch other lines or surfaces, and thatthe fan blades move freely.

7. Check that the compressor fits snugly ontoall its mounting pads.

8. See data plate on the rear side of the unitand check that local main voltage correspondswith the voltage specified on it.

CAUTION. Incorrect voltage supplied tothe icemaker will void your partsreplacement program.

9. Remove the manufacturer’s registrationcard from the inside of the User Manual and fill-in all parts including: Model and Serial Numbertaken from the data plate.Forward the completed self-addressed registra-tion card to SCOTSMAN EUROPE/Frimontfactory.

Storage bin (SB Series)

1. Follow the steps 1, 2 and 3 above tounpack the storage bin.

2. Unloose the two bolts and remove the protec-tion plate from the drain fitting on model B 550 S.

3. Carefully lay it down on its rear side and fitthe four legs into their sockets.

4. Remove all internal support packing andmasking tape as well as the plastic ice cubedeflector which is not used with the SCOTSMANModular Flakers.

5. Remove the manufacturer’s registrationcard from the inside of the User Manual and fill-in all parts including: Model and Serial Numbertaken from the data plate.Forward the completed self-addressed registra-tion card to SCOTSMAN EUROPE/Frimontfactory.

Storage bin (UBH Series)

1. Follow the steps 1, 2 and 3 above tounpack the storage bin.

NOTE. To retain the safety and performancebuilt into this icemaker, it is important thatinstallation and maintenance be conductedin the manner outlined in this manual.

Storage Bin

Since the MF series Modular Flakers do not havetheir own attached ice storage bins, it is necessaryto use an auxiliary bin as detailed here below:

SB 193 S or SB 322 S in combination withMF 26 and MF 36

SB 393 S or SB 530 S with its companionCBT 30 EFSD Top Cover in combination withMF 26, MF 36, MF 46 and MF 56

SB 550 S with its companion CBT 42 EFSDTop Cover in combination with MF 46 and MF 56

SB 948 S with its companion CBT 48 FMCDTop Cover in combination with MF 46 and MF 56

SB 1025 S with its companion CBT 52 FMCDin combination with MF 46 and MF 56

UBH 1100 or UBH 1600 in combinationwith MF 46, MF 56 and MF 66.

B. UNPACKING AND INSPECTION

Icemaker

1. Call your authorized SCOTSMAN Distributoror Dealer for proper installation.

2. Visually inspect the exterior of the packingand skid. Any severe damage noted should bereported to the delivering carrier and a concealeddamage claim form filled in subjet to inspection ofthe contents with the carrier’s representativepresent.

3. a) Cut and remove the plastic strip securingthe carton box to the skid.b) Cut open the top of the carton and remove thepolystyre protection sheet.c) Pull out the polystyre posts from the cornersand then remove the carton.

Page 12

3. On SB Series Storage Bin inspect its topmounting gasket which should be flat with nowrinkles, to provide a good sealing when theCBT Top Cover is installed on top of it.

4. Place the CBT Top Cover on top of Storagebin using care not to wrinkle or tear the gasket.

5. On the UBH Series Storage Bin unloosethe screws securing the S.S. Top Cover to thestorage bin and remove it.

6. Lay out on the bin top the plan of the icemachine as it will be located on the bin and cut anopening in the bin top for the ice drop area; coverthe edges of the opening with vinyl tape.

7. Install the gasket-on the bin top-around icedrop opening of the bin top; apply sealant alongthe inside of the gasket.

8. Position and install the four aluminium frontto rear stiffeners (U shaped) paying attention tothe guideline shown on the drawing.

NOTE. Bin wall gasket must be cut to clearthe stiffener ends as shown on drawing.Do not put any stiffeners crossing the icedrop opening.

9. Install the bin top in its position onto the bintop by:

- place the rear side of top against rear edgeof the bin

- lower the front of the top onto the stiffeners- re-fit the screws previously removed as

per step 5

10. Install the Modular Flaker or Superflakeronto the Top Cover of storage bin pay attentionto match the ice chute with the Bin Top opening.

D. ELECTRICAL CONNECTIONS

See data plate for current requirements todetermine wire size to be used for electricalconnections. All SCOTSMAN icemakers requirea solid earth wire.All SCOTSMAN ice machines are supplied fromthe factory completely pre-wired and require onlyelectrical power connections to the wire cordprovided at the rear of the unit.

2. Lay carefully down the bin on its back toprotect the finish and remove the bolts holdingthe shipping skid to the bin.

3. Screw-in the legs into the correspondingtapped holes in the bin bottom and tighten to seatthe legs well against the bin bottom.

4. Connect the water drain line to the maledrain fitting located in the bottom of the bin.

CAUTIONS. Avoid excessive tighteningforce when connecting to this fitting.Do not apply excessive heat if anysweating of the fittings is necessary. Heatconduction through the metal may meltthe threads in the plastic drain.

5. Insert the longer side of each plasticinspection window in the upper track of thecorresponding opening and push it to force thewindow to enter into its seat.

CBT Top Covers

1. Follow the steps 1 and 2 above to unpackthe top cover.

2. Cut open the carton box and pull out theCBT Top Cover.

3. On CBT 48/52 FMCD Top Covers, the icedrop area must be cutted on the plastic cover inthe same position of the ice machine ice chuteopening.

C. LOCATION AND LEVELLING

WARNING. This Modular Flaker andSuperflaker is designed for indoorinstallation only. Extended periods ofoperation at temperature exceeding thefollowing limitations will constitutemisuse under the terms of the SCOTSMANManufacturer’s Limited Warranty resultingin LOSS of warranty coverage.

1. Position the storage bin in the selectedpermanent location.Criteria for selection of location include:

a) Minimum room temperature 10°C (50°F)and maximum room temperature 40°C (100°F).

b) Water inlet temperatures: minimum 5°C(40°F) and maximum 35°C (90°F).

c) Well ventilated location for air cooledmodels (clean the air cooled condenser atfrequent intervals).

d) Service access: adequate space must beleft for all service connections through the rear ofthe ice maker. A minimum clearance of 15 cm(6") must be left at the sides of the unit for routingcooling air drawn into and exhausted out of thecompartment to maintain proper condensingoperation of air cooled models.

2. Level the Storage Bin Assy in both the leftto right and front to rear directions by means ofthe adjustable legs.

STIFFENER

CUT GASKET HERE

BIN WALL GAKET

TOP SHELL

Page 13

Make sure that the ice machine is connected toits own circuit and individually fused (see dataplate for fuse size).The maximum allowable voltage variation shouldnot exceed -10% and +10% of the data platerating. Low voltage can cause faulty functioningand may be responsible for serious damage tothe overload switch and motor windings.

NOTE. All external wiring should conform tonational, state and local standards andregulations.

Check voltage on the line and the ice maker’sdata plate before connecting the unit.

E. WATER SUPPLY AND DRAINCONNECTIONS

GENERAL

When choosing the water supply for the ice flakerconsideration should be given to:a) Length of runb) Water clarity and purityc) Adequate water supply pressureSince water is the most important single ingredientin producting ice you cannot emphasize toomuch the three items listed above.Low water pressure, below 1 bar may causemalfunction of the ice maker unit.Water containing excessive minerals will tend toproduce scale build-up on the interior parts of thewater system while too soft water (with too locontents of mineral salts), will produce a veryhard flaker ice.

WATER SUPPLY

Connect the 3/4" GAS male of the water inletfitting, using the food grade flexible hose suppliedto the cold water supply line with regular plumbingfitting and a shut-off valve installed in anaccessible position between the water supplyline and the unit.If water contains a high level of impurities, it isadvisable to consider the installation of anappropriate water filter or conditioner.

WATER SUPPLY - WATER COOLED MODELS

The water cooled versions of SCOTSMAN IceMakers require two separate inlet water supplies,one for the water making the flaker ice and theother for the water cooled condenser.Connect the 3/4" GAS male fitting of the waterinlet, using the flexible hose supplied to the coldwater supply line with regular plumbing fittingand a shut-off valve installed in an accessibleposition between the water supply line and theunit.

WATER DRAIN

The recommended drain tube is a plastic orflexible hose with 18 mm (3/4") I.D. which runs toan open trapped and vented drain. When thedrain is a long run, allow 3 cm pitch per meter(1/4" pitch per foot).Install a vertical open vent on drain line high pointat the unit drain connection to ensure gooddraining.The ideal drain receptacle is a trapped and ventedfloor drain.

WATER DRAIN - WATER COOLED MODELS

Connect the 3/4" GAS male fitting of the condenserwater drain, utilizing a second flexible hose to theopen trapped and vented drain.This additional drain line must not interconnect toany other of the units drains.

NOTE. The water supply and the water drainmust be installed to conform with the localcode. In some case a licensed plumber and/or a plumbing permit is required.

F. FINAL CHECK LIST

1. Is the unit in a room where ambienttemperatures are within a minimum of 10°C (50°F)even in winter months?

2. Is there at least a 15 cm (6") clearancearound the unit for proper air circulation?

3. Is the unit level? (IMPORTANT)

4. Have all the electrical and plumbingconnections been made, and is the water supplyshut-off valve open?

5. Has the voltage been tested and checkedagainst the data plate rating?

6. Has the water supply pressure been checkedto ensure a water pressure of at least 1 bar (14psi).7. Have the bolts holding the compressor downbeen checked to ensure that the compressor issnugly fitted onto the mounting pads?

8. Check all refrigerant lines and conduit linesto guard against vibrations and possible failure.

9. Have the bin liner and cabinet been wipedclean?

10. Has the owner/user been given the UserManual and been instructed on the importance ofperiodic maintenance checks?

11. Has the Manufacturer’s registration cardbeen filled in properly? Check for correct modeland serial number against the serial plate andmail the registration card to the factory.

12. Has the owner been given the name and thephone number of the authorized SCOTSMANService Agency serving him?

Page 14

G. INSTALLATION PRACTICE

1. Hand shut-off valve

2. Water filter

3. Water supply line (flexible hose)

4. 3/4" GAS male fitting

5. Power line

6. Main switch

7. Drain fitting

8. Vented drain

9. Vented drain

10. Open trapped vented drain

WARNING. This icemaker is not designed for outdoor installation and will not function inambient temperatures below 10 °C (50°F) or above 40 °C (100°F).This icemaker will malfunction with water temperatures below 5 °C (40°F) or above 35 °C(90°F).

Page 15

OPERATING INSTRUCTIONS

START UP

After having correctly installed the ice maker andcompleted the plumbing and electricalconnections, perform the following “Start-up” pro-cedure.

A. Open the water supply line shutoff valveand put the unit under electrical power by movingthe main switch, on the power supply line, to theON position.The first LED - GREEN - will glow to signal thatunit is under power.

NOTE. Every time the unit is put under power,after being kept for sometime in shut-offconditions (electrically disconnected) theRED LED will blink for 3 minutes (60' on MF66 only) after which the unit will start up withthe immediate operation of the gear motorassembly and, after few seconds, of thecompressor (Fig.1).

B. Elapsed the stand by period the unit startsoperating with the activation in sequence of thefollowing assemblies:GEAR MOTOR/SCOMPRESSORFAN MOTOR/S (if unit is an air cooled version)kept under control by the condenser temperatu-re sensor which has its probe within the condenserfins (Fig.2).

C. After 2 or 3 minutes from the compressorstart up, observe that flaker ice begins droppingoff the ice spout to fall through the ice chute intothe storage bin.

NOTE. The first ice bits that drop into the icestorage bin are not so hard as the evaporatingtemperature has not yet reached the correctoperating value. It is necessary to allow theice - just made - to cure itself and wait forabout ten minutes for the evaporating tem-perature to reach the correct value so tomake more hard bits of ice.

Page 16

FIG. 1

2

1L

N

COM

PRES

SOR

9

10

11

12

13

3

4

5

6

7

8

CONTACTOR COIL

GEAR MOTOR

FAN MOTOR

ELECTRONICCARD

RELAYS

TRIAC

RESET

S E

N S

O R

S

DATA

PRO

CESS

OR

WATERLEVEL

GEAR MOTOR ROTATION

CONDENSER TEMP.

EVAPORATOR TEMP.

ICE LEVEL CONTROL

TRANSF.

T>1°C

11

10

9

1

2

L

N

8

7

6

5

4

3

13

12

FIG. 3

FIG. 2

2

1L

N

COM

PRES

SOR

9

10

11

12

13

3

4

5

6

7

8

CONTACTOR COIL

GEAR MOTOR

FAN MOTOR

ELECTRONICCARD

RELAYS

TRIAC

RESET

S E

N S

O R

S

WATERLEVEL

GEAR MOTOR ROTATION

CONDENSER TEMP.

EVAPORATOR TEMP.

ICE LEVEL CONTROL

TRANSF.

T 40÷50°C

DATA

PRO

CESS

OR

2

1L

N

COM

PRES

SOR

9

10

11

12

13

3

4

5

6

7

8

CONTACTOR COIL

GEAR MOTOR

FAN MOTOR

ELECTRONICCARD

RELAYS

TRIAC

RESET

S E

N S

O R

S

DATA

PRO

CESS

OR

WATERLEVEL

GEAR MOTOR ROTATION

CONDENSER TEMP.

EVAPORATOR TEMP.

ICE LEVEL CONTROL

TRANSF.

T>-1°C

11

10

9

1

2

L

N

8

7

6

5

4

3

10

9

1

2

L

N

8

7

6

5

4

3

12

11

13

13

12

NOTE. If, after ten minutes from thecompressor start-up, the evaporating tem-perature has not dropped down to a valuelower than -1°C (30°F) the evaporating tem-perature sensor detects such an abnormalsituation and stops consequently the unitoperation (first the compressor and 3' laterthe gear reducer).In this circustance, the 5th warning YELLOWLED will blink.

The machine will remain in OFF mode forone hour then it will restart automatically.In case the unit trips OFF again in alarm for3 times in 3 hours, the machine SHUTS OFFDEFINITIVELY.After having diagnosed and eliminated thecause of the too hi evaporating temperature(insufficient refrigerant in the system orcompressor not running) it is necessary tounplug and plug in again to restart themachine. The unit, before resuming thenormal operation, will go through the usual3 minutes STAND-BY period.

OPERATION CHECKS UPON THE UNITSTART UP

D. Remove front service panel and, ifnecessary, install the refrigerant service gaugeson the corresponding service valves to checkboth the HI and LO refrigerant pressures.

NOTE. On air cooled models, the condensertemperature sensor, which is located withinthe condenser fins, keeps the head(condensing) pressure between presetvalues.In the event of condenser clogged - such toprevent the proper flow of the cooling air - or,in case the fan motor is out of operation, thecondenser temperature rises and when itreaches 70° C (160°F) for air cooled version -and 60° C (140°F) - for water cooled version -the condenser temperature sensor shuts-offthe ice maker (first the compressor and 3'later the gear reducer) with the consequentlight-up of the RED WARNING LIGHT (Fig.3).

The machine will remain in OFF mode forone hour then it will restart automatically.In case the unit trips OFF again in alarm for3 times in 3 hours, the machine SHUTS OFFDEFINITIVELY.After having diagnosed the reason of thetemperature rise and removed its cause, it isnecessary to proceed as per the previous“NOTE” to start up again the operation of theice maker.

E. Check for the correct CUT-OUT andCUT-IN of the water level sensor by first shuttingclosed the water shutoff valve on the watersupply line.

Page 18

FIG. 4

2

1L

N

COM

PRES

SOR

9

10

11

12

13

3

4

5

6

7

8

CONTACTOR COIL

GEAR MOTOR

FAN MOTOR

ELECTRONICCARD

RELAYS

TRIAC

RESET

S E

N S

O R

S

WATERLEVEL

GEAR MOTOR ROTATION

CONDENSER TEMP.

EVAPORATOR TEMP.

ICE LEVEL CONTROL

TRANSF.

T>75°C

DATA

PRO

CESS

OR

11

10

9

1

2

L

N

8

7

6

5

4

3

13

12

After 3 minutes the unit resumes its total operationwith the immediate start-up of the gear motorand, few seconds later, of the compressor.

F. Check for the correct operation of theelectronic eye (one per each ice chute on modelMF 66) of the optical ice level control, by closingthe bottom opening of the vertical ice chute.Wait the built up of the ice into the ice chute till itcuts the light beam of the sensing "eyes".This interruption will cause an immediate blinkingof the Bin Full YELLOW LED located on the frontof the P.C. Board and after about 6 secondscauses the shutoff of the unit (compressor firstand 3' later the gear reducer) with thesimultaneous lighting (steady) of the Same LEDsignalling the full bin situation (Fig.5).

Discharge the ice from the ice chute so to resumethe light beam previously interrupted (YELLOWLED blinking fast) and after about 6 seconds theflaker will re-start - through the 3 minutes STAND-BY period - with the extinguishing of the YELLOWLED.

This will cause a gradual decrease of the waterlevel in the float reservoir and as soon as thelevel gets below the two vertical metal pins, theflaker stops to operate (compressor first and 3'later the gear reducer) and the YELLOW warningLED will glow to signal the shortage of water(Fig. 4)

NOTE. The water level sensor detects thepresence of water in the float reservoir andconfirms it to the micro processor bymaintaining a low voltage current flowbetween the two metal pins using the wateras conductor.

WARNING. The use of de-mineralizedwater (water with no salt content) havingan electrical conductivity lower than 30µS, will cause break with the consequentCUT-OUT of the flaker and the glowing ofthe YELLOW LED of water shortage, evenwith water in the reservoir.

Opening the water supply line shutoff valve to fillup again the float reservoir, the YELLOW LEDgoes off while the RED LED starts blinking .

Page 19

FIG. 5

2

1L

N

COM

PRES

SOR

9

10

11

12

13

3

4

5

6

7

8

CONTACTOR COIL

GEAR MOTOR

FAN MOTOR

ELECTRONICCARD

RELAYS

TRIAC

RESET

S E

N S

O R

S

WATERLEVEL

GEAR MOTOR ROTATION

CONDENSER TEMP.

EVAPORATOR TEMP.

ICE LEVEL CONTROL

TRANSF.

DATA

PRO

CESS

OR

L

N

11

10

9

1

2

7

8

6

5

4

3

12

13

NOTE. The ICE LEVEL CONTROL(INFRARED SYSTEM) is independent of thetemperature however, the reliability of itsdetection can be affected by external lightradiations or by any sort of dirt and scalesediment which may deposit directly on thelight source and on the receiver.To prevent any possible ice makermalfunction, it is advisable to locate the unitwhere it can't be reached by any direct lightbeam or light radiation and to follow theinstructions for the periodical cleaning of thelight sensor elements as detailed in theMAINTENANCE AND CLEANING PROCE-DURES.

NOTE. During the life of the machine the IceLevel Control may require a recalibrationmainly when the glass of the two optical eyesare covered by a thin lay of scale.To do it just follow the following procedure:• With unit OFF push and old the Button

of the PC Board• Give power to the machine through the

external Master Switch• Hold the PC Board Button till the leds

are ON (more or less 10 seconds)• Release the PC Board ButtonThe Optical Ice Level Control is nowrecalibrated.Check for the correct operation of the OpticalIce Level Control by plasing a handfull of icein between the two eyes.The Bin Full yellow led must start to blink/flash immediately and, 6 seconds later, themachine must trip OFF.

M. If previously installed, remove the refrigerantservice gauges and re-fit the unit service panelspreviously removed.

N. Instruct the owner/user on the generaloperation of the ice machine and about thecleaning and care it requires.

Page 20

WATER CIRCUIT

The water enter in the machine through thewater inlet fitting which incorporates a strainer -located at the rear side of the cabinet - then itgoes to the water reservoir flowing through afloat valve.

NOTE. The presence of the water in the floatreservoir is detected by a system of twosensors which operates in conjunction withthe P.C. Board. The two sensors use thewater as a conductor to maintain a lowvoltage current flow between them. In casethe water used is very soft (de-mineralized)or the float reservoir gets empty the currentflow between the sensors become so weakor is no longer maintained that, asconsequence, the P.C. Board shutoff theflaker operation with the simultaneousglowing of the YELLOW LED signalling“Shortage of water”.

The float reservoir is positioned at the side of thefreezing at such an height to be able to maintaina constant water level. The water flows from thereservoir into the bottom inlet of the freezer tosorround the stainless steel auger which isvertically fitted in the center of the freezer.In the freezer the incoming water gets chilled intosoft (slush) ice which is moved upward by therotating action of the auger. The auger rotatescounter-clockwise within the freezer powered bya direct drive gear motor and carries the iceupward along the refrigerated freezer inner wallsand by doing so the ice gets progressively thickerand harder.The ice, being costantly lifted up, meet the teethof the ice breaker which is fitted on the top end ofthe auger, where it gets compacted, cracked andforced to change from vertical into horizontalmotion to be discharged out, through the icespout and chute, into the storage bin.

PRINCIPLE OF OPERATION

FLOAT TANK

FLOAT VALVE

FREEZER

MF 66

FREEZER WATERFEED LINE

FREEZER

FLOAT VALVE

ICE SPOUT

FLOAT TANK

MF 26-36

FREEZER

FLOAT TANK

FLOAT VALVE

MF 46-56

WA

TE

R IN

LET

LIN

EW

AT

ER

INLE

T L

INE

ICE SPOUT

FREEZERWATERFEED LINE

WA

TE

R IN

LET

LIN

E

FREEZERWATERFEED LINE

ICE SPOUT

Page 21

By running the ice maker, i.e. by putting the unitunder power, starts the automatic and continuousicemaking process which would not stop until theice storage bin gets filled-up to the level of thecontrol “eyes” located on the ice chute. As the icelevel raises to interrupt the light beam runningbetween the two infrared leds (one or both onmodel MF 66), the unit stops after six seconds(compressor first and 3' later the gear reducer),with the simulteneous glowing of the YELLOWLED signalling the “Full Bin” situation.

NOTE. The interruption of the light beambetween the two light sensors is immediatelysignalled by the blinking of the BIN FULLYELLOW LED located on the front of theP.C. Board.After about 6" of steady interruption of thelight beam the unit stops and the “Full Bin”YELLOW LED glows steady.The six seconds of delay prevent the unitfrom stopping for any undue reason like themomentarily interruption of the light beamcaused by the flakes that slides along the icespout before dropping into the bin.

As some ice gets scooped out from the storagebin, the light beam between the two sensorsresumes (fast blinking of YELLOW LED) and sixseconds later the ice machine restarts the icemaking process - going always through the 3'stand by - and the YELLOW LED goes off.

REFRIGERANT CIRCUIT

The hot gas refrigerant discharged outfrom the compressor reaches thecondenser where, being cooled down,condenses into liquid.Flowing into the liquid line it passesthrough the drier filter, then it goes allthe way through the capillary tube whereit looses some of its pressure so that itspressure and temperature are lowered.Next, the refrigerant enters into theevaporator coil wrapped around thefreezer inner tube.The water being constantly fed at theinterior of the freezer inner tube, exchan-ge heat with the refrigerant circulatinginto the evaporator coil, this cause therefrigerant to boil-off and evaporate,thereby it changes from liquid into vapor.The vapor refrigerant then passesthrough the suction accumulator andthrough the suction line where therefrigerant exchanges heat with the oneflowing into the capillary tube (warmer)before being sucked into the compressorto be recirculated.The refrigerant head pressure is keptbetween two pre-set values (8÷9 bar -110÷125 psig on MF 26 and 17÷18bar - 240÷250 psig on MF 36, MF 46,MF 56 and MF 66) by the condensertemperature sensor which has its probelocated within the condenser fins - in aircooled versions.

CAPILLARY TUBE

DISCHARGE LINE

COMPRESSOR

FAN MOTOR

EVAPORATORMF 66

ACCUMULATOR

This condenser temperature sensor, when sensesa rising of the condenser temperature beyondthe pre-fixed limit, changes its electrical resistanceand send a low voltage power flow to the MICRO-PROCESSOR of the P.C. Board which energizes,through a TRIAC, the Fan Motor in ON-OFF mode.On the water cooled versions, the refrigeranthead pressure is kept at the constant value of8.5 bar (120 psig) on MF 26 and of 17 bar(240 psig) on MF 36, MF 46, MF 56 and MF 66by the metered amount of water passing throughthe condenser which is regulated by the action ofthe Water Regulating Valve that has its capillary

MF 26-36-46-56

ACCUMULATOR

CAPILLARY TUBE

DISCHARGE LINE

EVAPORATOR

FAN MOTOR

COMPRESSOR CO

ND

EN

SE

R

SU

CT

ION

LIN

E

SUCTION LINE

CONDENSER

DRIED

Page 22

tube connected to the liquid refrigerant line. Aspressure increases, the water regulating valveopens to increase the flow of cooling water to thecondenser.

NOTE. In case the condenser temperatureprobe senses that the condenser tempera-ture has rised to 70°C on air cooled version- or 60° C on water cooled version - for one ofthe following abnormal reasons:CLOGGED CONDENSER (Air cooled version)INSUFFICIENT FLOW OF COOLINGWATER (Water cooled version)FAN MOTOR OUT OF OPERATION (Aircooled version)AMBIENT TEMPERATURE HIGHER THEN43°C (110°F)it causes the total and immediate SHUT-OFFof the machine (compressor first and gearmotor 3' later) in order to prevent the unit fromoperating in abnormal and dangerousconditions.When the ice maker stops on account of thisprotective device, there is a simultaneousglowing of the RED LED, warning the user ofthe Hi Temperature situation.The machine will remain in OFF mode forone hour then it will restart automatically.In case the unit trips OFF again in alarm for3 times in 3 hours, the machine SHUTS OFFDEFINITIVELY.After having eliminated the source of theexcessive condenser temperature, to restartthe ice machine it is necessary to unplug andplug in again.

The RED LED starts blinking and threeminutes later the flaker unit resume its normaloperating mode. The condenser temperatu-re sensor has a further safety function whichconsist in preventing the unit from operatingin Lo-ambient conditions i.e. when thecondenser temperature - equivalent to theambient temperature - is lower then 1 °C34°F (Fig.6).As soon as the ambient temperature rises upto 5 °C the P.C. Board restarts automaticallythe machine on the three minutes startingtime.

The refrigerant suction or Lo-pressure sets - innormal ambient conditions - on the value of0.5 bar (7 psig) on MF 26 and of 2.4÷2.6 bar(34÷36 psig) on MF 36, MF 46, MF 56 andMF 66 after few minutes from the unit start-up.This value can vary of 0.1 or 0.2 bar (1.5 ÷3 psig)in relation to the water temperture varia-tionsinfluencing the freezer cylinder.

NOTE. If, after ten minutes from the unit startup, no ice is made and the evaporatingtemperature detected by the evaporatorsensor results to be higher than -1°C (30°F)the ice maker stops (compressor first andgear motor 3' later) and the 5th WARNINGYELLOW LED blinks.The machine will remain in OFF mode forone hour then it will restart automatically.In case the unit trips OFF again in alarm for3 times in 3 hours, the machine SHUTS OFFDEFINITIVELY.

Page 23

FIG. 6

2

1L

N

COM

PRES

SOR

9

10

11

12

13

3

4

5

6

7

8

CONTACTOR COIL

GEAR MOTOR

FAN MOTOR

ELECTRONICCARD

RELAYS

TRIAC

RESET

S E

N S

O R

S

WATERLEVEL

GEAR MOTOR ROTATION

CONDENSER TEMP.

EVAPORATOR TEMP.

ICE LEVEL CONTROL

TRANSF.

T<1°C

DATA

PRO

CESS

OR

11

10

9

1

2

L

N

8

7

6

5

4

3

13

12

MECHANICAL SYSTEM

The mechanical system of the SCOTSMANFlaker machines consists basically of a gearmotor assembly (two on model MF 66) whichdrives, through a ratched coupling, a worn shaftor auger placed on its vertical axis within thefreezing cylinder (two on model MF 66).The gear motor is made of a single phase electricmotor with a permanent capacitor. This motor isdirectly fitted in the gear case through which itdrives - in counter clockwise rotation at a speedof 9.5 r.p.m. - the freezer auger being linked to itby the ratched coupling.

NOTE. In the event the gear motor (one ofthe two on MF 66) will tend to rotate in thewrong direction (counterclockwise) or notrotating at all or rotating at lower speed theunit will stop immediately (compressor andgear motor) with the glowing of the WARNINGYELLOW LED on account of the interventionof the Electromagnetic Safety Device -based on Hall Effect principle.

The machine will remain in OFF mode forone hour then it will restart automatically.In case the unit trips OFF again in alarm for3 times in 3 hours, the machine SHUTS OFFDEFINITIVELY.After having diagnosed and eliminated thesource of the gear motor wrong rotation, torestart the unit it is necessary switch OFFand ON the power line main disconnnectswitch (Fig. 7).The RED LED will start blinking and after 3minutes the ice maker will resume its totaloperations by running first the gear motorand then the compressor.

Too low ambient and water temperature (wellbelow the limitations of respectively 10°C and5°C - 50°F and 40°F) or frequent interruptions ofthe water supply to the freezing cylinder (cloggingof the water hose connecting the float reservoir tothe water inlet at the bottom of the freezer) maycause the ice to get too hard and compact loosingfluidity and thereby seizing the auger.This situation will put under excessive strainand load the entire drive system and freezerbearings.

Page 24

FIG. 7

2

1L

N

COM

PRES

SOR

9

10

11

12

13

3

4

5

6

7

8

CONTACTOR COIL

GEAR MOTOR

FAN MOTOR

ELECTRONICCARD

RELAYS

TRIAC

RESET

S E

N S

O R

S

WATERLEVEL

GEAR MOTOR ROTATION

CONDENSER TEMP.

EVAPORATOR TEMP.

ICE LEVEL CONTROL

TRANSF.

DATA

PRO

CESS

OR

11

10

9

1

2

L

N

8

7

6

5

4

3

13

12

REFRIGERANT METERING DEVICE:

capillary tube

REFRIGERANT CHARGE (R 134 A)

Air cooled Water cooled

MF 26 440 gr 400 gr

REFRIGERANT CHARGE (R 404 A)

Air cooled Water cooledMF 36 660 gr 520 grMF 46 750 gr 600 grMF 56 880 gr 820 grMF 66 2400 gr 1200 gr

NOTE. Before charging the refrigerant systemalways check the type of refrigerant and quantityas specified on the individual ice machinedataplate. The refrigerant charges indicatedare relatives to averages operating conditions.

OPERATING PRESSURES (With 21 °C ambient temperature)

Discharge pressure: MF 26 MF 36 - 46 - 56 MF 66

Air cooled version 8 ÷ 9 bar 17 ÷ 18 bar 17 ÷ 18 bar

Water cooled version 8,5 bar 17 bar 17 bar

Suction pressure: 0,5 bar 2.5 bar 2.2 bar

Page 25

In case the condenser temperature sensordetects a temperature at the condenser lowerthan +3°C (37°F) that means ambient tempera-ture too low for the correct unit operation, thesensor signals to the P.C. BOARD to do not startup the unit till the ambient temperature rises to10°C.In the air cooled versions, in relation to thedifferent current transmitted, the micro processorof the P.C. BOARD supplies, through a TRIAC,the power at high voltage to the fan motor.In the event the condenser temperature risesand reaches 60°C or 70°C according to thesetting of DIP SWITCH number 8 the currentarriving to the micro processor is such to cause animmediate and total stop of the machine operation.

NOTE. The machine will remain in OFFmode for one hour then it will restartautomatically.In case the unit trips OFF again in alarm for3 times in 3 hours, the machine SHUTS OFFDEFINITIVELY.To restart the unit after the shutoff caused bythe hi condenser temperature, it is neces-sary to switch OFF and ON the power linemain disconnect Switch.

D. ELECTROMAGNETIC SENSOR(Two on MF 66 Model)

This safety device is housed on top of the DriveMotor (one per each motor on MF 66 model) anddetects - based on Hall Effect principle - therotating speed and rotating direction of the driveMotor.Should the rotating speed drop below 1300 r.p.m.the magnitude measured by this device is suchto signal to the microprocessor to stop the unitand light-up the YELLOW LED. The samereaction occures when the drive motor will tendto rotate in the wrong direction (counterclockwise)or when it doesn't rotate at all.

NOTE. The machine will remain in OFFmode for one hour then it will restart automa-tically. In case the unit trips OFF again inalarm for 3 times in 3 hours, the machineSHUTS OFF DEFINITIVELY. To restart theunit after the shutoff caused by this safetydevice, it is necessary first to eliminate thecause that has generated the intervention ofthe device and then switch OFF and ON thepower line main disconnect switch.

E. OPTICAL ICE LEVEL CONTROL(Two on MF 66 Model)

The electronic optical ice level control, locatedinto the ice chute (one in each of the two ice

COMPONENTS DESCRIPTION

A. EVAPORATOR TEMPERATURESENSOR

The evaporator sensor probe is inserted into itstube well, which is welded on the evaporatoroutlet line, it detects the temperature of therefrigerant on the way out from the evaporatorand signals it by suppling a low voltage currentflow to the P.C. Board.According to the current received, the micro-processor let the ice maker to continue itsoperations or not. In case the evaporating tem-perature, after 10 minutes from the unit start-up,does not go below -1°C (30°F) the evaporatorsensor signals to stop immediately the unitoperation, with the blinking of the 5th WarningYELLOW LED.

NOTE. The machine will remain in OFF modefor one hour then it will restart automatically.In case the unit trips OFF again in alarm for3 times in 3 hours, the machine SHUTS OFFDEFINITIVELY.To restart the unit after the shutoff caused bythe hi evaporating temperature, it is neces-sary to switch OFF and ON the power linemain disconnect Switch.

B. WATER LEVEL SENSOR

This sensor consists of two small stainless steelrods vertically fitted on the inner face of thereservoir cover and electrically connected to thelow voltage circuit of the P.C. Board.When the cover of the reservoir is positioned inits place the tips of both the rods dip into thereservoir water transmitting a low power currentthrou the same.

NOTE. In the event of shortage of water inthe reservoir or, in case the water used is toosoft (de-mineralized) to cause greaterresistence to the current flow (electricalconductivity lower than 30 µS) this sensorsystem causes the shutoff of the machine ,to protect it from running without water orwith an inadequate water quality. In thissituation the YELLOW LED will glow to warnof the machine shutoff and the reason why.

C. CONDENSER TEMPERATURE SENSOR

The condenser temperature sensor probe,located within the condenser fins (air cooledversion) or in contact with the tube coil (watercooled version) detects the condenser tempera-ture variations and signals them by supplyingcurrent, at low voltage, to the P.C. BOARD.

Page 26

chutes on MF 66 model), has the function to stopthe operation of the ice machine when the lightbeam between the light source and the receivergets interrupted by the flake ice whichaccumulates in the chute.When the light beam is interrupted the Bin FullYELLOW LED located in the front of the P.C.BOARD blinks; in case the light beam getsinterrupted for as long as 6 seconds, the icemachine stops (drive motor keeps on working by3' delay then stops) with the glowing-up of the2nd YELLOW LED to monitor the full ice binsituation. The 6 seconds of delay prevents thatany minimum interruption of the light beam due tothe regular ice chuting through the ice spout maystop the operation of the unit.

NOTE. During the life of the machine the IceLevel Control may require a recalibrationmainly when the glass of the two optical eyesare covered by a thin lay of scale.To do it just follow the following procedure:

• With unit OFF push and old the Buttonof the PC Board

• Give power to the machine through theexternal Master Switch

• Hold the PC Board Button till the ledsare ON (more or less 10 seconds)

• Release the PC Board Reset Button

The Optical Ice Level Control is nowrecalibrated.

Check for the correct operation of the OpticalIce Level Control by plasing a handfull of icein between the two eyes.The Bin Full yellow led must start to blink/flash immediately and, 6 seconds later, themachine must trip OFF.

As soon as the ice is scooped out (with theresumption of the light beam between the twoinfrared sensor of ice level control) 6 secondslater the ice machine resumes its operation withthe simul-taneous extinguishing the 2nd YELLOWLED.

F. P.C. BOARD (Data processor)

The P.C. BOARD , fitted in its plastic box locatedin the front of the unit, consists of two separatedprinted circuits one at high and the other at lowvoltage and protected by fuses. Also it consists offive aligned LEDS monitoring the operation of themachine of three jumpers (TEST used only in thefactory, 60/70°C used to set up the PC Board atproper safety cut out condensing temperature and3' to by pass the 3 minutes Stand By) and of inputterminals for the leads of the sensor probes aswell as input and output terminals for the leads ofthe ice maker electrical wires.

The P.C. BOARD is the brain of the system andit elaborates, through its micro processor, thesignals received from the sensors in order tocontrol the operation of the different electricalcomponents of the ice maker (compressor, gearmotor, etc.).The five LEDS, placed in a row in the front of theP.C. BOARD, monitor the following situations:

GREEN LEDUnit under electricalpower

YELLOW LED- Blinking: I/R beam cut

out- Steady: unit shut-off at

storage bin full- Blinking fast: I/R beam resumed

YELLOW LEDUnit shut-off due to atoo lo-water level intofloat tank

RED LEDON all the time- Unit shut-off due to a too

hi-condensing temperature- Unit shut-off due to a too

lo-ambient temperature <+1 °CBlinking3 minutes start up delay time

YELLOW LED

ON all the time- Unit shut-off due to the wrong

rotation direction of gear motor- Unit shut-off due to the

too lo speed of gear motorBlinking- Unit shut-off due to a too hi-evaporating temp.>-1°C after 10 min of operation

YELLOW ANDRED LED

- Blinking: Evaporator sensorout of order

- Steady: Condenser sensorout of order

- Blinking alternatively: Ice levelcontrol out of order

60/70°C Set up of the Safety CondensingTemperature SensorJUMP IN - 70°CJUMP OUT - 60°C

H. INTERFACE P.C. BOARD(Only on MF 66 Model)

Used only on MF 66 model, it allows to elaboratethe signal received from both the electromagneticsensors as well as from both the optical ice levelcontrols transmitting it to the P.C. Board for thecontrol of the unit operation.The Interface P.C. Board is equipped by fourINLET sockets (two for the electromagneticsensors and two for the optical ice level controls)and two OUTLET plugs to be connected to thesockets of the main P.C. Board.

I. FLOAT RESERVOIR

The float reservoir consist of a plastic water panon which is fitted a float valve with its settingscrew. The float valve modulate the incomingwater flow to maintain a constant water level inthe reservoir, level that corresponds to the one inthe freezing cylinder to ensure proper iceformation and fluidity.On the inner side of the reservoir cover arefitted the two water level sensor pins whichdetects the presence or the shortage of waterin the reservoir.

G. JUMPERS

The Flaker PC Board is equipped by six jumpers:

PURGE Used on machine equipped with WaterPurge Valve to purge out the waterfrom the water system every 12 hoursand when the machine restart from theBin FullJUMP IN - Purge OFFJUMP OUT - Purge ON

PWD Used to Pump Out the water by meansof the Progressive Water Pumpsupplied as a kitJUMP IN - No Progressive Water Pumpinstalled/in operation - MF ModelsJUMP OUT - Progressive Water Pumpinstalled/in operation

3’/60’ Delay time at start upJUMP IN - 3 minutes delayJUMP OUT - 60 minutes delay - MF 66

TEST Factory use ONLY

6/12 M Cleaning remind for the water system -Red Light blinks/flashes with machineONJUMP IN - 6 months set upJUMP OUT - 12 months set up

NOTE. To restart the cleaning remindcountdown push and hold the PC Boardbutton for more of 5 seconds with machine inoperation till the switching OFF of the twoYELLOW Leds.

Page 28

TO BY-PASS THE 3'/60' STAND BY TIME, SYMPLY JUMP "TEST" CONTACTS WITH PCB ENERGIZED

NOTE. It is very important to make sure of thecorrect fitting of the cover on the reservoir inorder to enable the sensor to efficiently controlthe water situation avoiding undue shutoffinterventions.

J. FREEZING CYLINDER or EVAPORATOR(Two on MF 66 Model)

The freezing cylinder is made of a stainless steelvertical tube on which exterior is wrapped aroundthe cooling coil with the evaporating chamberand in its interior is located the auger whichrotates on its vertical axis and it is maintainedaligned by the top and bottom bearings. A waterseal system is located in the bottom part of thefreezer while at the top end is fitted the icebreaker.The water constantly flowing into the cylinderbottom part, freezes into ice when in contact withthe cylinder inner walls. The ice is then lifted upby the rotating auger and compacted and forcedout by the ice breaker.

K. ICE BREAKER (Two on MF 66 Model)

The ice breaker is fitted in the freezer upper partit has, on MF 26-36 Model, two breaker teeth tobreak the ice and with its slanted shape from therear tooth to the front one it compacts and forcesthe ice out in an horizontal way.On the other models the ice breaker is made byseveral rectangular openings where the ice isforced to pass through.By undergoing this, the ice looses its excess ofwater content so it drops into the bin in hard drybits of ice.In the ice breaker it is housed the top bearingwhich is made of two rolls bearings positioned towithstand the auger axial and radial loads. Thisbearing is lubricated with a food grade - waterresistant grease.

NOTE. It is advisable to check the conditionsof both the lubricant grease and the topbearing every six months.

L. GEAR MOTOR(Two on MF 66 Model)

The gear motor is made of a single phase electricmotor with permanent capacitor directly fitted ona gear box.The drive motor rotor is kept aligned on itsvertical axis by two ball bearings permanentlylubricated. The gear case contains a train ofthree spur gears with the first one in fiber to limitthe noise level. All the three gears are encasedin case roller bearings and are covered bylubricant grease (MOBILPLEX IP 44).Two seal rings, one fitted on the rotor shaft andthe other on the output shaft keep the gear casesealed.The interior can be inspected and serviced byunbolting the two halves of the aluminium gearcase housing.

M. FAN MOTOR (Air cooled version)

The fan motor is controlled through the TRIAC ofthe P.C. BOARD by the condenser temperaturesensor. Normally it operates to draw cooling airthrough the condenser fins.In cold ambient situation, the fan motor can runat intermittance as the condenser pressure mustbe kept between two corresponding headpressure values.

N. WATER REGULATING VALVE(Water cooled version)

This valve controls the head pressure in therefrigerant system by regulating the flow of watergoing to the condenser.As pressure increases, the water regulatingvalve opens to increase the flow of coolingwater.

O. COMPRESSOR

The hermetic compressor is the heart of therefrigerant system and it is used to circulate andretrieve the refrigerant throughout the entiresystem.It compresses the low pressure refrigerant vaporcausing its temperature to rise and become highpressure hot vapor which is then released throughthe discharge valve.

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ADJUSTMENT, REMOVAL AND REPLACEMENT PROCEDURES

NOTE. Read the instructions throughlybefore performing any of the followingadjustment or removal and replacement pro-cedure.

A. ADJUSTEMENT OF THE EVAPORATORWATER LEVEL

The correct water level in the freezing cylinder isabout 20 mm. (1") below the ice dischargeopening. Low water level causes excessive straininside the freezer assembly due to a fasterfreezing rate.

When the water level is above or below thecorrect one, adjustment can be performed byraising or lowering at the measure required, thewater reservoir and its mounting bracket.

To Raise or Lower the water level:

a. Loosen and remove the screw securing themounting bracket of the water reservoir to theunit cabinet and raise the water reservoir to thecorrect level.

b. Thread the mounting screw in thecorresponding hole and tighten it.

WARNING. Be sure the electrical powersupply circuit breaker and the inlet watersupply are OFF, before starting any of thefollowing Removal and Replacementprocedures as a precaution to preventpossible personal injury or damage to theequipments.

B. REPLACEMENT OF THE GEAR MOTORMAGNETIC SENSOR

1. On MF 26, MF 36, MF 46 and MF 56remove the front/top and side/rear panels andon MF 66 remove the front, top and left sidepanels.

2. Unloose the three screws securing theplastic cover to the top of the gear motor andremove it.

3. Unloose the two screws securing themagnetic sensor to the plastic housing andwithdraw it from its seat.

4. Trace the gear motor magnetic sensorterminal plug on the rear side of the control box(red with four terminal pins) and draw it out fromits socket by carefully slackening the fasteningtie.

5. To install the replacement gear motormagnetic sensor follow the above steps inreverse.

C. REPLACEMENT OF THE AUGER,WATER SEAL, BEARINGS ANDCOUPLING

1. Remove thepanels.

2. Follow the steps at item H to remove the icespout.

3. On model MF 26-36 unloose and removetwo screws and washers holding tight the spoutbracket to the freezing cylinder.

On models MF 46, MF 56 and MF 66 unlooseand remove the four bolts securing the ice breakerto the upper flange of the evaporator.

4. On model MF 26-36 grasp the wire caphook at the top of the freezer and pull out theauger, attached cap and ice breaker from the topof the freezer.

On models MF 46, MF 56 and MF 66 with two flatscrewdrivers insert then on the space betweenthe icebreaker and the upper flange and by tiltingthem lift the icebreaker and auger assembly.

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0.5-1.0 mm

Grasp the icebreaker and remove the icebreakerand auger assembly by lifting them from theevaporator.

NOTE. If the auger cannot be pulled out,proceed to steps 10 and 11 of this paragraph,to gain access to the auger bottom. Then,with a rowhide mallet or placing a piece ofwood on the bottom end of the auger, tap thisbottom to break loose the auger and be ablethen to pull it out as per step 4 above.

5. On model MF 26-36, with a circlip plier, re-move the retaining ring and cap hook from the icebreaker while, on the superflaker models, removethe plastic cap using a screwdriver as a lever.

6. Unloose and remove cap screw and removethe ice breaker from the auger.

7. Clean away the old grease from the interiorof the ice breaker and inspect the bearing pressedinto the top of the ice breaker and if worn do nothesitate to replace it.

8. Inspect the conditions of the O ring; if torn orworn replace it.

WARNING. The top bearing assemblyworks in critical conditions for whatconcern its lubrication as it is haused inthe ice breaker where the formation ofcondensation is usual. Therefore it isimportant to apply on it an ample coatingof Food grade Waterproof Grease beforeinstalling the breaker and cap hook inplace .

9. Slide off from the auger bottom the upperhalf of the water seal.

NOTE. Any time the auger is removed forreplacement or inspection use extra care inhandling the water seal parts, so no dirt orforeign matters are deposited on the surfacesof the seal. If there is any doubt about theeffectiveness of the water seal or O ring donot hesitate to REPLACE THEM.

10. Unloose and remove the three/four boltswhich attach the freezer assy to the aluminiumadaptor.

11. Raise the freezer assy off the adaptor,secure it out of the way to allow room to work. OnMF 26-36 using a suitable lenght and size woodendowel or stick inserted through the top of theopen freezer, tap the lower half of the water sealand the lower bearing out the bottom of thefreezer.

12. On the superflaker models, with twoscrewdrivers as a lever, remove from the bottomof the freezer assy the lo bearing brass holdingring.

NOTE. It is good practice to replace the waterseal assy and both the top and the bottombearings any time the auger is removed.To facilitate this it is available a service Kit(P/N 001028.07 for MF 26-36 andP/N 001028.08 for MF 46-56-MF 66) whichincludes besides the above mentioned parts,the ice breaker O ring and a tube of foodgrade waterproof grease.

13. Reach through the adaptor and remove thecoupling parts.

14. Check both the coupling halves for chippingand wear and do not hesitate to replace them.

NOTE. It is very important to provide correct/proper lubrication of the inside bore of theupper semi-coupling as well as to the externalsurfaces of the teeth as shown on the herebelow photo.The correct lubrication allows the upper semi-coupling to move it down, by the load of theupper spring, in case of any rising up duringits rotation.

15. Install bottom bearing and brass retainerassy into the bottom of the freezer.

16. Install the upper bearing into the ice breakerstarting by the radial portion that must be fittedwith the flat surface facing up.

17. Apply some lubricant (grease) on the uppersurface then install the rollers cage with thesmaller openings of the same facing up so toleave a small gap between plastic cage and flatsurface of the botton portion of the bearing (seedrawing).

Page 31

18. Apply some move lubricant then place theS.S. trust washer.

19. After to have replace the O ring into the icebreaker fit the same on top of the auger andsecure it with the top bolt.

20. Install the auger/icebreaker into theevaporator following the previous steps in reverse.

D. REPLACEMENT OF THE GEAR MOTORASSY

1. On MF 26-36, MF 46 and MF 56 remove thefront/top and side/rear panels and on MF 66remove the front, rear, top and left side panels.

2. Remove the three/four bolts and washerssecuring the gear reducer base to the unit chassis,then remove bolts and lockwashers which attachthe bottom of the aluminium adaptor to the gearreducer case cover.

3. Follow the steps of item E to remove thegear motor magnetic sensor.

4. Trace and disconnect the electric wiresleads of the drive motor. Lift and remove theentire gear motor assembly.

5. To install the replacement gear motor assyfollow the above steps in reverse.

E. REPLACEMENT OF THE FREEZINGCYLINDER

1. Follow the steps at item H to remove the icespout.

2. Remove the clamp fastening the water hoseto the water inlet port of the freezer assy. Placea water pan under this water inlet port thendisconnect the water hose and collect all waterflowing from freezer and from water hose.

3. Withdraw the evaporator sensor probe fromthe its holder as stated in item B.

4. Recover the refrigerant from the systemand transfer it in a container so to reclaim orrecycle it.

5. Unsolder and disconnect the capillary tubeand the accumulator/suction line assy from theoutlet line of the freezing cylinder.

6. Remove the three/four bolts and washerssecuring the gear reducer base to the unit chassis,then remove bolts and lockwashers which attachthe bottom of the aluminium adaptor to the gearreducer case cover.

7. Lift the freezer up and off the gear motorassembly, then if necessary remove thealuminium adaptor by removing the threemounting screws and lockwashers.

NOTE. It is imperative to install a replacementdrier whenever the sealed refrigerationsystem is open.Do not replace the drier until all other repairsor replacements have been completed.

8. To install the replacement evaporator followthe above steps in reverse.

NOTE. Thoroughly evacuate the system toremove moisture and non condensables afterevaporator replacement.

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WIRING DIAGRAM MF 26-36AIR AND WATER COOLED

230/50/1

Page 33

WIRING DIAGRAM MF 46 - MF 56AIR AND WATER COOLED

SINGLE PHASE

Page 34

WIRING DIAGRAM MF 56AIR AND WATER COOLED

THREE PHASE

Page 35

WIRING DIAGRAM MF 66AIR AND WATER COOLED

THREE PHASE

Page 36

SYMPTON POSSIBLE CAUSE SUGGESTED CORRECTION

Unit will not run Blown fuse in P.C.Board Replace fuse & check for cause ofNo LED lighted-on blown fuse

Master switch in OFF position Turn switch to ON position

Inoperative P.C.Board Replace P.C.Board

Loose electrical connections Check wiring

Bin full yellow LED glows with Inoperative or dirty ice level control Replace or clean ice level controlno ice in the bin

No water yellow LED glows Shortage of water See remedies for shortage of water.

Water too soft Install a mineral salt metering device

Red-alarm LED glows High head pressure Dirty condenser. CleanINOPERATIVE fan motor. Replace

Ambient temperature too low Move unit in warmer location

Red-alarm LED blinks 3' stand by None - Wait the elapsed of 3'

Reverse rotation yellow LED blinks Too hi evap. temperature Check and charge refrigerantShortage or lack of refrigerant system

Inoperative evaporator sensor Replace

Reverse rotation yellow LED glows Gear motor turns on reverse Check stator winding and capacitor

Too low gear motor rotating speed Check rotor bearings, freezer bearingsand interior of freezer for scores.Replace whatever worn or damaged.

Drive motor doesn't turn Check for power, open circuit, etc.

Magnetic cylinder loose its magnetic Replace magnetic cylinder.charge

Water yellow LED and red LED Inoperative Condenser Sensor Replace it.ON (steady) together

Water yellow LED and red LED Inoperative Evaporator Sensor Replace it.blink together

Compressor cycles intermittently Low voltage Check circuit for overloadingCheck voltage at the supply to thebuilding. If low, contact the powercompany

Non-condensable gas in system Purge the system

Compressor starting device with Check for loose wires in startingloose wires device

Low ice production Capillary tube partially restricted Blow charge, add new gas & drier,after evacuating system withvacuum pump

Moisture in the system Same as above

Low water level in the freezer Adjust to approx 20 mm below icespout

Shortage of refrigerant Check for leaks & recharge

Pitted or stained auger surface Clean or replace auger

SERVICE DIAGNOSIS

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SYMPTON POSSIBLE CAUSE SUGGESTED CORRECTION

Wet ice Ambient temperature too high Move unit to cooler location

Under or overcharge of refrigerant Recharge with correct quantity

High water level in the freezer Lower to approx. 20 mm below icespout

Faulty compressor Replace

Worn out of the auger Replace

Machine runs but makes no ice Water not entering in the freezer Air look in feed line to freezer. Vent itClogged feed line to freezer. Clean it

Drive motor or gear stripped Check repair or replace

Moisture in the system Purge, replace drier and re-charge

Water leaks Water seal leaking Replace water seal

Water feed line to freezer leaking Check and fasten hose clamp

Float valve not closing Check and adjust float valve settingscrew

Spout leaking Tighten screws holding the spout

Excessive noise or chattering Mineral or scale deposit on auger Remove and manually polish augerand inner freezer walls and inner walls of freezer barrel using

emery paper

Low suction pressure Add refrigerant to rise suctionpressure

Water feed line to freezer clogged Vent and clean it

Low water level into freezer Adjust to approx. 20 mm below icespout

Worn freezer bearings Check and replace

Gear motor noise Worn rotor bearings Check and replace

Shortage or poor lubricant in gear Check for proper lubr. opening gearcase case. Top of gears must be covered

with lubr.

Gear case bearings and racers Check and replace worn partsworn out

Shortage of water Strainer at water inlet fitting Remove strainer and cleanclogged

Float reservoir water nozzle Remove float valve and clean nozzleclogged-up

SERVICE DIAGNOSIS

Page 38

MAINTENANCE AND CLEANING INSTRUCTIONS

Page 39

A. GENERAL

The periods and the procedures for maintenanceand cleaning are given as guides and are not tobe construed as absolute or invariable.Cleaning, especially, will vary depending uponlocal water and ambient conditions and the icevolume produced; and, each icemaker must bemaintened individually, in accordance with itsparticular location requirements.

B. ICEMAKER

The following maintenance should be scheduledat least two times per year on these icemakers.

1. Check and clean the water line strainer.

2. Remove the cover from the float reservoir -care to do not damage the two water sensors -and depress the float to make sure that a fullstream of water enters into the reservoir.If not gently remove the float valve from itsreservoir bracket than clean the hole of thenozzle.

3. Check that the icemaker is levelled in sideto side and in front to rear directions.

4. Check that the water level in the waterreservoir is below the overflow but high enoughthat it does not run out of the spout opening.

5. Clean the water system, water reservoirand the interior of freezing cylinder using asolution of SCOTSMAN Ice Machine Cleaner.Refer to procedure C cleaning instructions andafter cleaning will indicate frequency and proce-dure to be followed in local areas.

NOTE. Cleaning requirements varyaccording to the local water conditions andindividual user operation.

6. If required, polish the two sensor rodssecured to the float reservoir cover, heavy scalesediment on them can be removed with the helpof a bit of SCOTSMAN Cleaner plain.

7. With the ice machine and fan motor OFF onair cooled models, clean condenser using vacuumcleaner, whisk broom or non metallic brush takingcare to do not damage the condenser/ambienttemperature sensor.

8. Check for water leaks and tighten drain lineconnections. Pour water down bin drain line tobe sure that drain line is open and clear.

9. Check the ice level control sensor to testshut-off. Close the bottom of the ice chute andwait till it is completely full of ice so to cut off thelight beam for at least 6 seconds.

This should cause the immediate blinking of theBin Full YELLOW LED located in the front of P.C.Board and, 6 seconds later, the total stopping ofthe ice maker with the simultaneous light up ofthe same LED (steady).

NOTE. Test the operation of the Ice LevelControl using ice NOT HAND.

Within few seconds from the removal of the icebetween the sensor lights the ice maker resumeits operation.

NOTE. The ice level control uses devicesthat sense light, therefore they must be keptclean enough so they can “see”.Every three months remove the optical systemthen clean/wipe the sensing “eyes” with aclean soft cloth.

10. Check for refrigerant leaks and for properfrost line, which should frost as far as approx. 20cm (8") from the compressor.When doubtful about refrigerant charge, installrefrigerant gauges on corresponding servicevalves and check for correct refrigerant pressures.(See Operating pressure at page 25 of thismanual).

11. Check that fan blades move freely and arenot touching any surfaces.

12. Remove the retaining ring and the hook andcap from the top of the freezer assembly theninspect the top bearing, wipe clean of all greaseand apply a coating of food grade water proofgrease.

NOTE. It is recommended to use only foodgrade and waterproof grease to lubricate thefreezer top bearing.

13. Check the quality of ice. Ice flakes shouldbe wet when formed, but will cure rapidily tonormal hardness in the bin.

NOTE. It is not abnormal for some water toemerge from the ice spout with the flaker ice.

C. CLEANING INSTRUCTIONS OF WATERSYSTEM

1. Switch OFF the Master disconnect switchon the power line.

2. Remove all ice stored in the bin to preventit from getting contaminated with the cleaningsolution.

3. Close the water shutoff valve on waterline.

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4. Remove the top panels to gain access tothe water reservoir.

5. Remove the float reservoir cover and with apiece of copper wire short the two metal pins ofthe water level sensor.

6. Place a water pan under the freezer waterinlet port, disconnect the water hose from thisport and allow the water from the freezer to flowinto the pan.Then refit the water hose to the freezer water inletport.

7. Prepare the cleaning solution by diluting ina plastic container two or three liters of warmwater (45°-50°C) with a 0,2-0,3 liters ofSCOTSMAN Ice Machine Cleaner (on MF 66double the quantities).

WARNING. The SCOTSMAN Ice MachineCleaner contains Phosphoric andHydroxyacetic acids. These compoundsare corrosive and may cause burns ifswallowed, DO NOT induce vomiting.Give large amounts of water or milk. CallPhysician immediately. In case of externalcontact flush with water. KEEP OUT OFTHE REACH OF CHILDREN

8. Pour the cleaning solution into the waterreservoir.

9. After 15 minutes switch ON the Masterswitch to start the unit.

10. Wait till the machine starts to discharge ice,then continue to slowly pour the cleaning solutioninto the water reservoir taking care to maintainthe level just below the overflow.

NOTE. The ice made with the cleaningsolution is slushy and coloured also, it maytend to loose fluidity creating some resistencein being elevated and extruded; this situationcan be heard by the noise made of the ice.Should this occure it is recommended to stopfor few minutes the ice machine in order toallow the ice in the freezer to partially meltthen restart again.

11. When all the cleaning solution has beenused up, open the water shutoff valve to allownew fresh water to flow into the reservoir. Let theunit to continue to run until the ice resumes thenormal colour and hardness.

12. Stop the icemaker and pour warm water onthe ice deposited into the storage bin to melt it up.

NOTE. DO NOT use ice produced with thecleaning solution. Be sure none remains inthe bin.

13. Pour into the water reservoir 1 cc. (approx20 drops) of Scotsman Sanitiser (Antialgae P/N264000.00) then switch the unit ON.

14. Left the unit running for approx 10 minutesthen remove the copper wire used to jump thetwo sensors for the water level and place backcorrectly the cover on the float reservoir.

NOTE. DO NOT use ice produced with thesanitising solution.

15. With a sponge moisted with a sanitisingsolution, wipe clean all the bin interior surfaces.

REMEMBER. To prevent the accumulationof undesirable bacteria it is necessary tosanitise the interior of the storage bin with ananti-algae disinfectant solution every week.

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