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DAE SUNG

Mono Flex Pump

Users Manual

DAESUNG Industry Company Ltd.

pumps with stuffing box

Applies to DAE SUNG series "DS-R Standard Type" pumps, excl.

Mono Flex Pump Manual Edition R1.4 English

Table of Contents

Headline - Issues adressed - Page

Safety General

Before operating the pump

Mounting

Warrenty

Application When to use the Mono Flex ?

Specifications Function

The DAESUNG Mono Flex Pump range

Codefication

Name plate

The pipe system NPSHa

Minimizing pressure loss

Ensuring priming

Installation Allignment

Pump & pipe connection

Start-up

Shut-down

Maintenance Dismantling & Assembly

General in line maintenance

Overhaul

Storage

ATEX requirements

Technical specifications

Trouble shooting

Cross sectional drawing (spare parts)

2

4

4

4

5

6

6

7

8

10

11

11

12

12

12

Electric wire connection 13

13

14

15

16

21

28

28

29

29

32

Motor manual (if applicable)Enclosures Enclosed

Gearmotor manual (if applicable) Enclosed

Flexible coupling manual (if applicable) Enclosed

Heating element manual (if applicable) Enclosed

Special seal system manual (if applicable) Enclosed

Other accessories (if applicable) Enclosed

Pump specification chart Enclosed

3

Your local authorized representative:

E-mail: [email protected]

www.flexpump.co.kr

Fax: +82 2 2681 1496

Tel. +82 2 2681 1468~9

KOREA

Yang Choen Gu, SEOUL

763-8 Shin Jung 3 Dong

DAE SUNG Industry Pump Company Ltd.

Manufacture Factory

35

34

33Dimension of ImpellerMaintenance

Dimension of each model

Performance Curve

Specification of mono pump 39

4

Safety- General

Before start-up, make sure that all drive equipment guards are located and secured properly.

Before dismantling: Know the liquid pumped with the pump, and take the neccesary precautions.

Make sure that the drive unit has been made non-operational.

Pressure must be vented from pump casing and valve

Failure to comply to the above safety guidelines, may result in serious injury or death !

- Before operating the pumpSafety

(if equipped with such).

- MountingSafety

The mounting of the pump or pump unit should be solid and stable. Pump orientation must

be considered in relation to drainage / cavity ventilation requirements. Once mounted,

shaft drive elements must be checked for correct alignment. Rotate pump shaft by at least

Before operating the pump, be sure that it and all parts of the system to whichit is connected are clean and free from debris and that all valves in the suction

and discharge pipelines are fully opened. Ensure that all piping connecting to

the pump is fully supported and correctly aligned with its relevant connections.

potential to be an ignition source.could result in unexpected mechanical contact in the pump head and has the

Misalignment and/or excess loads will cause severe pump damage. This

excessive loading and will create high temperatures and increased noise emissions. Do

one full revolution to ensure smoothness of operation. Incorrect alignment will produce

that could cause a spark.

necessary to earth the pump head to avoid the bulid up of a potential charge difference

not use any drive arrangements that cause side loading of the drive shaft. It may also be

5

Warrenty

DAE SUNG Industry Pump Co., Ltd. warrents all products manufactured by it to be free

from defects in workmanship and/or material, for a period of two (1) years from date of

start-up, provided that in no event shall this warrenty extend more than eighteen (18)

months from the date of shipment from DAE SUNG Industry Pump Co., Ltd.

If, during said warrenty period, any products sold by DAE SUNG Industry Pump Co., Ltd. prove to be defective in workmanship and/or material under normal use and

service, and if such products are returned to DAE SUNG Industry Pump Co., Ltd.

facilities in Korea, transportation charges prepaid, and if the products are found by DAE

SUNG Industry Pump Co., Ltd. to be deffective in workmanship and/or material, they

will be replaced or repaired free of charge, FOB Busan KOREA.

DAE SUNG Industry Pump Co., Ltd. assumes no liability for consequential damages of

any kind and the purchaser by acceptance of delivery assumes all liability for the

consequences of the use or misuse of DAE SUNG Industry Pump Co., Ltd. products, by

the purchaser his employees or others.

DAE SUNG Industry Pump Co., Ltd. will assume no field expense for service or parts

unless authorized by it in advance.

Equipment and accesories purchased by DAE SUNG Industry Pump Co., Ltd. from

outside sources which are incorporated into any DAE SUNG Industry Pump Co., Ltd.

product are warrented only to the extent of and by the original manufacturer warrenty

or guarentee, if any.

THIS IS DAE SUNG Industry Pump Co., Ltd. SOLE WARRENTY AND IN LIEU

OF ALL OTHER WARRENTIES EXPRESSED OR IMPLIED, WHICH ARE HEREBY

EXCLUDED, INCLUDING IN PARTICULAR ALL WARRENTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

NO OFFICER OR EMPLOYEE OF DAE SUNG Industry Pump Co., Ltd. IS

AUTHORIZED TO ALTER THIS WARRENTY.

6

Application- When to use the Mono-Flex ?

The Mono-Flex is designed specifically for applications where you face the following extreme conditions:

* Waste-water with sludge, Excretions from farms.

* Sewage disposal tank, Wetted soil from foreshore.

* Sulfuric acid, Ferrous sulfate, Cuprous sulphide, Hydrochloric acid,

Ferrous chloride, Nitric acid, dyes, Phosphoric acid, Acetic acid, Caustic soda and other Chemicals.

* Abrasive medias.

* Lubricant, Oil, DOP, Various waste oil, Petroleum oil, Light oil, Thinner,

Gasoline, Cutting oil, Fresh oil, Rolling oil and Other oils.

- Function

Specifications

1. The M-flex pump is a positive-displacement pump taking advantage of centrifugal force,

which projects liquid when its impeller wings are bended while the wings embracing

liquid revolve.

2.

As the space between first wing and the interior surface of the pump gradually expands,

3. It facilitates low rpm pumping under its repeative operation. A constant volume can be

pumped by adjusting inflow volume with a ball valve attached to the inlet, and a constant

* Paste, Salted fish, Salted shrimps, Milk, Beverage.

it sucks in liquid. While continuing revolution, the wing projects out the liquid, starting

from fourth wing position, and then as the space gradually contracts,

the wing throws out the remainder liquid while being bended.

volume can be transferred by adjusting the rpm.

7

Specifications- The DAESUNG Mono pump range.

Capacity up to 97.5m3/h.(pure flow rate)

Solids up to 40mm.

Operating pressure at 3 Bar.(Max up to 6 Bar)

Viscosity up to 50,000cp.

Operating Temperatures at 70deg.C.( Shot-term Operating at 120deg.C.)

Suction up to 4 m ( 9m when wetted)

Seal systems: Dynamic seals: Double mechanical seals or Single mechnical seals.

Static seals: O-rings.

The dynamic seals run in a lubricating fluid, to remove leaks and lubricate sliding surfaces.As static seals, the following are offered: = NBR, Viton and EPT.

Materials of Casing and Shaft: FCD45, SUS304, SUS316, SUS316L, Alloy-20, SR-50A,

Kinds of Impellers.

The DAE SUNG DSM- pump range is built up around several sizes and configurations.

Many different configurations can be used, to solve the specific application at hand.

Please contact your nearest DAE SUNG authorized dealer if you wish to use your

Mono Flex for other purposes than orginally designed for.

HastelloyB, C, CD4MCu, Bronze and available in other special material.

- N-Rubber : usable for transferring general water, sea water, soil- and waste-water, Excretions, Mud, Sludge, Shampoo, Rinse, Detergent and bubble.- U-Rubber : usable for transferring lubricant, Oil, DOP, Waste Oil, Vinegar-Mixed soy sauce, Vvinegar, Salted fishes and liquids requiring nontoxity, and for phamaceutical and food industries.

- H-Rubber : usable for transferring petroleum oil Light oil, Thinner, Gasoline, Fresh Oil, Cutting Oil, Paint, Alcohol, Animal- and Vegetable-oil, beef tallow and other various kinds of oil.

- F-Rubber : usable for transferring Sulfuric acid, Cuprous sulphide, Ferrous Sulphide, Hydrochloric acid, Ferrous chloride, Nitric acid, Dyes, Phosphoric acid, Acetic acid, Caustic soda and other Chemicals.

8

When requesting for details on a supplied pump, the serial number is important. Allways

state the serial number, to ensure that you get the correct informations. The serial number

is stated on the pump name plate, but is also punched into the top surface of the pump

casing (between the two ports).

Below you will find the DAE SUNG codefication system, which will allow you to know the

exact specifications on your pump.

Example code

DS-R25BAANAC-0513220BA-001

Port / Flange connection ( C : Flanges )

Insert Type (A : Double Cut)

Impeller Insert Material (A : Bronze)

Shaft materials (A : Stainless steel SUS304 / ANSI304)

Wetted materials (C : Stainless steel SUS304 / ANSI304)

Power Joint Type(A : Shaft Coupling Type)

Seal Stuffing Box Type(B : Closed Type filled Seal Lube Oil)

Heating

(0 : No heating)

Casing Cover O-Ring(2 : O-rings Viton)

(2 : O-rings Viton)Static seal system

Seal system

(3 : Sic/Sic)-Secondary

Seal system -Primary

(1 : Mechanical

seal TC/TC)

- Codefication

Specifications

Impeller Material (N : N-Rubber)

1

19

14

13

17

17

2

10

19

14

7

2

15

8

DAE SUNG Mono-Flex Codefication & Standards.

Please confirm following model code system. And comment to us.Example below: DDSR25-BAANAC-0513220BA-001

Code. Description

001 Special features:

A Power Joint Type A=Shaft Coupling Type B=Motor Direct TypeC=Reducer Direct Type X=Non-Standard

B Seal Stuffing Box Type A = Open Type B = Closed Type filled Seal Lube Oil(Industrial)C = Closed Type filled Seal Lube Oil(Food) X = Non-Standard

0 Heating: 0 = No heating 1 = Heating jacket for heating fluid2 = Electrical heating 9 = Non-standard heating system

Casing Cover O-Ring 1 = O-rings NBR 2 = O-rings Viton3 = O-rings EPDM 4 = Capsule Type Teflon O-rings9 = Non-standard Casing O-Ring

Static seal system: 1 = O-rings NBR(Max. 10 barg ) 2 = O-rings Viton(Max. 10 Barg)3 = O-ring EPT(Max. 10 Barg) 9 = Non-standard static seal system

Seal system - Secondary 0 = No secondary seal used 1 = Mechanical seal: Ceramic/Carbon2 = Mechanical seal: TC/TC 3 = Mechanical seal: Sic/Sic4=Lip Seal 9 = Non-standard seal

Seal system - Primary seal 1 = Mechanical seal: TC/TC 2 = Mechanical seal: Sic/Sic3 = Non-standard mechanical seal 4 = Stuffing box (gland packing), PTFE-coated5 = Non-standard Stuffing box (gland packing) 6 = Lip seal system9 = Non-standard lip seal system

Pressure rating: The number states the Pdiff. max in bar´s.

Wetted materials: A = Cast Iron (FCD45) B = Bronze(Casing,Cover & Rear Cover) C = Stainless Steel SUS304 / AISI304 D = Stainless Steel SUS316 / AISI316

E = Stainless Steel SUS316L / AISI316L X = Non-standard materials

Shaft Mat'l A = Stainless Steel SUS304 / AISI304 B = Stainless Steel SUS316 / AISI316C = Stainless Steel SUS316L / AISI316L D = Stainless Steel 420J2E= Steel X = Non Standard Mat'l

N Flexible Impeller Mat'l N = N-Rubber H = H-RubberF = F-Rubber U = U-RubberC = C-Rubber X = Other

A Impeller Insert Mat'l A = Bronze B = SUS304C = SUS316 X =Non-Standard Mat'l

Insert type: A =Double D-Cut B = SerrationC = Spline X = Non-standard

Port / Flange connection: A = Flanges acc. to DIN 2084 B = Threaded connection, RG/WPTC = Flanges acc. to ANSI B16.1 / B 16.5 D = Ferrule Connection.X = Non-standard connections

Pump- and port size: R-10,15,20,20FW,25,25SW,32,32FW,40,40SW,50,50SW,65,65FW,65SW,80SW,100FW,120FW,120SW,150FWAAA = Non-standard pump- and/or port size.

DS Pump manufacturer and

type:

13

2

CodesThree digit extra serial number, that may be de-coded by contacting DAE SUNG.

2-0

5

DAE SUNG Mono-Flex

Cㅡ

BA

AR

25

9

Specifications- Codefication

10

Specifications- Name plate

DS-R25BAANAC-0513220BA-001

DAE SUNG INDUSTRY PUMP

11.6~928.5 cc/Rev.

DS-R10~R150FW

0~30kg/cm

10A~125A

Serial No.

Diff.Press

Port Size

Capacity

Model

2

kg/cm

45.5

25

5

DS-R25

cc/Rev.

mm

2

Date

Production Date

Please confirm model code system.( 9 page)

05. 10.

PTC/SLS

ISD

INR

Model Type

Industry

Standard Type

Coupling Type

Direct

Geard Moter

Geard Motor

Direct

Coupling Type

Standard Type

Sanitary

ISD

ISG

ICD

ICG

SSD

SSG

SCD

SCG

Seal Type

Type

Seal Type

Imp. Mat.

Primary Seal System

Secondary Seal System

TC;TC Mechanical Seal

Sic;Sic Mechanical Seal

Teflon packing

Special packing

Lipseal (Teflon)

Ceramic;Carbon Mechanical seal

TC;TC Mechanical Seal

Sic;Sic Mechanical Seal

Lipseal (Teflon)

Impeller Mat.

N-Rubber

H-Rubber

F-Rubber

U-Rubber

CR-Rubber

By special order

PTC

PSC

PTP

PSP

PLS

SCC

STC

SSC

SLS

INR

IHR

IFR

IUR

ICR

IBS

Refer to below nomenclature.



Every Lobe Flex pump is equipped with the following name plates:

Standard name plate.

MADE IN

KOREA

Geard Moter

Direct

Geard Moter

Direct

11

The pipe system- NPSH A

The DAE SUNG DS-R is normally used in medium to high viscosity applications. This

makes it neccesary to ensure that the media source is located close to the pump, feeding by

gravity, or that an in-feed device is used.

As a "rule of thumb", the systems NPSHA (Net Positive Suction Head) should be no less than

7mlc. If less than this value, the pump may cavitate; the pump is being "starved". This will

increase wear, as this means that intermittent dry-running will occur. The DS-R is capable of

withstanding this, but it will increase the wear rate and power cost for no reason.

The road to a low "Life Cycle Cost" (LCC):

* Use large diameter pipe.

* Use as few bends and fittings as possible.

* Use large radius bends.

* Avoid unneccesary restrictions on the suction side.

Contact your DAE SUNG representative for determining the NPSHA of your pipe system

- Minimizing pressure lossThe pipe system

Minimizing pressure loss is essential. There is nothing to loose in working hard to obtain the

lowest possible pressure - there is everything to win:

Bigger pipe diameter, but with a lower pressure rating: a cost effective pipe system.Less power consumption.Less noise.

Higher safety.Less wear.

Smaller, and less costly, pump unit may be used.

Setting up the correct pipe system is a "once in a lifetime" expenditure. The electricity and the

spares parts needed, will be a life-time on-going cost. Minimize pressure, and you will

minimize running cost in the complete system life span.

12

The pipe system- Ensure priming

- Alignment

Installation

When facing pipe systems with long and restricted suction lines, a "S-pipe" may be required on

the suction side of the pump. This will ensure that the pump is allways liquid filled at start-up,

and priming will be ensured.

Installation

- Pump & Pipe connection

All DAE SUNG pump units are supplied alligned on a U-channel base frame - unless

otherwise specified by the user.

Despite the use of a very rigid base frame design, some flexing may have occured during

transportation, as well as when being mounted on the typical concrete base.

Therefore, the pump unit components must be alligned, so that the flexible coupling

connecting drive and pump will not be overloaded, as well as to minimize stress imposed on

each component.

The alignment of the pump and drive are done by using a straightedge on the coupling

half-parts.

The deviation must not exceed 0.05mm. The alignment is done by inserting / removing shims

underneath the component.

The axial clearance must be 3mm between the two shaft half-parts.

Avoid to put any uneccesary stress on the pump and pipe system, when connecting the two.

Make sure that pipe and pump are alligned properly.

Use bolts of quality 4.6 (yield stress), to avoid overstressing especially cast iron flanges on

the pump. The bolts must be tightened uniformly.

Bolt torque:

Bolt size

- M12

- M16

- M20

Cast Iron

30Nm

75Nm

145Nm 385Nm

200Nm

80Nm

Steel / Stainless Steel

For sanitary application. we used the Ferrule connect, DIN union and SMS union.

Make sure of Sanitary port type, dimensions and connection of piping.

13

Installation- Electric wire connection

Start-up

Make sure that the pump unit is electrically connected, by a skilled certified electrician.

Wrong direction of rotation may be caused the incorrect connection of electric wires.

Rubber Flexible Connector

Flexible Joint

Lubricant & cooling

Gear oil drain plug

Lubricant & cooling levelGear oil

Check wiring of electric wire

Check the voltage

220V / 380V

Sanitary SUS Joint

14

Shut-down

After start-up, the following must be checked:

1. There is flow according to initial calculations.

2. There is pressure within the possibilities of the pump, and the initial calculations/ estimates.

3. There is no cavitation (knocking sounds may indicate cavitation).

4. There is not excessive power consumption.

5. The seal fluid pressure is close to atmospheric pressure, if fitted with a pressure gauge.

Ensure that fluids will not solidify inside the pump casing, as this may cause damage when

re-starting. Fluids can be drained out of the drain mounted in the bottom af the casing.

Close off the suction side valve, in order to avoid the inlet pressure making the pump rotate.

11. Correct direction of rotation are ensured (jog the pump before start-up to check).

10. That monitoring and safety systems are engaged and functionable.

9. That valves on suction- and pressure side has been opened.

8. That the pump casing is liquid filled.

7. That a safety valve is fitted on the pressure line.

6. The seal fluid level pressure gauge, if fitted, are mounted correctly.

5. The temperature sensor, if fitted, are mounted correctly.

4. The gearbox (gearmotor) is filled with the correct grade of oil, to the correct level.

3. The external seal flushing system, if fitted, is working.

2. The seal fluid chamber is filled with the correct grade of fluid, to the correct level,

1. The pump gearbox is filled with the correct grade of oil, to the correct level,

Before the start-up, the following must be checked:

using the level glass.

using the level glass.

12. Don't dry running over 30 seconds.

15

Maintenance

- Dismantling & Assembly

Before any maintenance takes place:

Shut down the system. Make sure that power is not connected, and can not accidently be

re-connected. The power switch MUST be physically locked.

Close shut-off valves on both sides of the pump.

Wear protective clothing and googles, if required due to the pumped media.

Turn off heating systems, in time for the system to cool down.

All maintenance work should be carried out by skilled craftsmen only.

Comply to the general DAE SUNG INDISTRY PUMP CO., LTD. safety guidelines. See the chapter "Start-up" for locations of fluids, and levels.

Failure to comply to the above safety guidelines, may result in serious injury or death !

When to replace parts, are determined by the performance of the pump. If the performance

drops to an unacceptable level, replacements must take place. When the user has gained

experience with the application, a fixed "Time Between Overhaul" (TBO) can be set.

The maintenance can be divided into two categories and subcategories:

1. General in-line maintenance.

1A). Replacing rotors.

1B). Replacing dynamic seals (excl. shaft oil seal, aft section).

2. Overhaul. The pump is taken out of the pipe system.

2A). Rebuilding the pump: rotors, gearbox, seal systems e.t.c.

Before assembly, all components must be thoroughly cleaned, leaving no metal or lubricants behind.

In the following text we will show how these tasks are best performed, with a minimum of

down-time. Please note, that DAE SUNG service staff will allways be able to assist

you on-site, to minimize the total cost involved in any maintenance work.

16

1A). Replacing Impeller.-Industry Type

new impeller.

Extract the used impeller, and prepare the

extract o-ring.

Extract the cover from casing, also

5

Untighten the front screws.

3

1

Pull out the used impeller.

6

Pull out the screws.

2

4

- General in-line maintenance

Maintenance

17

1B). Replacing Impeller.-Sanitary type

new impeller.

Extract the used impeller, and prepare the

extract o-ring.

Extract the cover from casing, also

5

Untighten the clamp screws.

3

1

Pull out the used impeller.

6

2

4

- General in-line maintenance

Maintenance

1

2

34

56

Unscrew the screws.

The casing detach from the casing rear cover.

Unscrew the screws of the retainer due to replace

Pull out the seal parts on the shaft.

Also pull out the o-rings from groove of housing.

Detach the casing rear cover from housing.

18

1C). For replacing dynamic seals (Industry)

the seal.

12

34

56

Unscrew the clamp screw due to detach.

Extract the front cover and o-ring.

Unscrew the screws due to detach the rear cover

Extract the rear cover and o-ring.

Detach the casing and impeller from housing.

19

1D). For replacing dynamic seals (Sanitary)

from the housing.

20

Drain out the dynamic seal lubricant from the seal housing before replacing the dynamic seal.

PLEASE NOTE ; If the seals are to be re-used, be very carefull not to damage the sliding

surfaces. Do not touch the sliding surfaces with you bare fingers; use clean rubber gloves to

avoid any grease on the surfaces. Any grease left behind my burn solid onto the surfaces and cause leaks.

Fill-up with lubricant, and perform the procedures described in the chapter "Start-up". For

the first one hour of operation, the pump should be monitored to detect any leak.

1Ball Bearing

Oil Seal

Shaft

Ball Bearing

2

Mount oil seal, shafts in the bearing housing.

Press ball bearings onto shafts.

Oil seal

Snap Ring

Mount the snap-ring in the assigned groove of housing. And mount the oil-seal onto the shaft.

21

To perform a complete overhaul, the pump must be brought off-line. The overhaul

procedure should take place in a heated and ventilated work shop. The workshop must

contain standard tools, as well as preferably a bench press for installing bearings.

- Overhaul

Maintenance

Bearing Housing

3

Mount mechanical seal set onto shafts.

Mount the seal, o-ring, retainer on the rear cover.And tighten the screws.

Mechanical Seal

Screw

Retainer Ring

Seal

4Casing Rear Cover

?

22

5

Mount the O-rings, Casing Rear Cover on the

Mount the casing on the casing rear cover.

Housing

Housing

6

Casing Rear Cover

housing.

Coil SpringCasing

23

O-ring

7

Tighten the screws due to fix the casing.

Put in the impeller which before to bend for

Casing

8

Screw

Impeller

?!

DAE SUNG PUMP Co., ltd

24

fit in the casing.

9

Mount the O-ring, Front cover in the casing.And tighten the screws to fix the front cover.

Front Cover

Screw

O-ring

25

Repair Tool

Oil Cap

26

Sanitary type

o-ring, front cover. Tight the clamp due to fix.

Put the impeller in the casing.And mount the

Mount the o-ring, rear cover on housing.

Mount the oil-seal, mechanical seal onto shaft.

3

Press ball bearings onto shafts.

2

1

And tight the screws due to fix.

- Assemble

Maintenance

Mount oil seal, sanp ring, shafts in the housing.

Attach the casing on the housing.

27

Maintenance

- Storage

If Mono pump is stored for more than 3 months, its impeller must be pulled out.

When pumping the pump with impeller which be stored for more than 3 months, its problem

be happened. When the impeller input in the pump, need careful job for rotating direction.

About the assembly of impeller, you can find the page of Overhaul.

Especially, In humid area, if pump is stored for more than 6 months, independently, the pumps

be painted for rust resisting. That need the notify for application to be used.

28

Technical specifications.

90%egree of filling

Seal fluid amount:

Trouble shooting

When facing problems with the pumping system, it is essential to work methodically

towards finding the cause. Each potential cause must be investigated at a time.

The following initial questions must be raised:

Did the problem arise after changes in the pumped media properties ?

Did the problem arise after changes to pump and/or pipe system ?

Did the problem arise after changes to the drive system ?

If you can answer "yes" to any of the above: go back to the old set-up, and contact your

closest DAE SUNG distributor for advice on your new application.

If you can answer "no" to all of the above, please proceed with the below described

trouble-shooting.

29

Problem Cause(s) Solution (s)

Pump not turning.

Drive not working. Check fuses and driver

electrical connections.

Key sheared, in impellers and/or

pump gear.

Replace key.

Slipping drive belts. Adjust belts.

Shafts or gears sheared. Replace.

No flow, but pump turning.

Wrong way of rotation. Reverse rotation.

Inlet pipe system clogged. Clean pipes, valves, filters e.t.c.

Inlet valve closed. Open valve, check pump for

damages.

Air leaks due to bad seals /

pipe system.

Replace seals find leaks in

pipe system (false air beingsucked in).

Increase speed if possible

considering the fluid

properties, fill suction line, install foot valve.

Pump speed to low.

Liquid is draining. Use foot or checkvalve.

Gas comes out of liquid

solution.

Bleed lines near pump must be

installed.

Clearances between impeller and

front cover / rear cover to big.

Increase pump speed, rebuild

pump.

NPSHa to low. Move pump closer to source,

use large diameter pipes,

fewer pipe fittings. Select

larger pump.

Relief valve installed in

pressure pipe open.

Adjust valve.

Fluid vaporizing.

Suction side clogged. Clean.

NPSHa to low. Move pump closer to source,

use large diameter pipes,

fewer pipe fittings. Select

larger pump.

Flow lower than calculated.

Speed to low. Increase speed.

Air leaks due to bad seals /

pipe system.

Replace seals, find leaks in pipe

system (false air being sucked

in)

Viscosity too high. Use larger pump and/or lower

speed (decreased flow)

30

Problem Cause(s) Solution (s)

Worn out pump. Rebuild or replace.

Pump draws excessive current.

Dissolved gas.

Too high pressure.

Increase clearances.

Abrasive fluids. Decrease speed, decrease

Flow lower than calculated.

Pressure to high (increased slip) Modify pressure pipe.

Noise

Cavitation (NPSHa too low). Reduce speed, use larger

pump, modify pipe system.

Air or gas in pipe system. Remove leaks.

Reduce pressure, reduce

speed, modify pipe system.

Rotor touches casing/front

cover / rear cover.

Correct clearances.

Pressure too high. Modify pressure pipe system,

decrease speed.

Worn bearings or gears. Rebuild.

Rotor to rotor contact. Rebuild.

Modify pressure pipe system,

decrease speed.

Drain pump after use, flush

after use, install heating.

Fluid sedimentation at standstill.

Fluid(particle) build-up on

rotor / front cover / rear

cover / casing.

Service life too short.

pressure, better materials ofconstruction.

Corrosion. Upgrade materials ofconstruction.

31


*Industry Type

*Sanitary Type

1

1

2

2

3

3

3

3

4

4

7

8

12

10

11

13 17

14

15

16

18

19

20

21

21

11

13

18

17

24

25

26

23

5

6

9

5

6

22

27

27

28

28

32


39 Screw, in-hex

Casing (Industry)

O-ring

Screw

Casing rear cover (Industry)

Screw

Front Cover (Industry)

Casing rear cover (Sanitary)

Key

Screw

Clamp Screw

Front Cover (Sanitary)

Casing (Sanitary)

Single Mechanical Seal Assembly

Screw

O-ring

Impeller

Cam

Oil Cap21

27

28

24

25

26

23

22

15

18

20

19

17

16

12

14

13

11

10

O-ring

1

2

1

1 set

1

1

1

1

1

1

5

1

1

1

5

1

1

1

Snap-Ring

Retainer Ring

Double Mechanical Seal Assembly

Oil-Seal

Oil-Seal

Drive Shaft

Bearing Housing Body

DESCRIPTION

Ball Bearing3

6

8

7

5

4

ITEM

1

2

2

1

1

1 set

1

4

Qty.

1

1

STSDS-R456-9

ABSDS-R456-21

STS

STS

DS-R456-27

DS-R456-28

DS-R456-25

DS-R456-24

DS-R456-23

DS-R456-22

DS-R456-26

STS

STS

STS

TC, Sic, etc.STS

N,H,F,U-Rubber

DS-R456-15

DS-R456-20

DS-R456-19

DS-R456-18

DS-R456-17

DS-R456-16

DS-R456-14

DS-R456-13

DS-R456-12

DS-R456-11

DS-R456-10

STS

NBR

STS

STS

STS

STS

STS

NBR

NBR

STS

MATERIAL

DS-R456-3

DS-R456-8

DS-R456-7

DS-R456-6

DS-R456-5

DS-R456-4

DS-R50DX-2

DS-R456DX-1

PART NO.

NBR

S45C

TC, Sic, etc.

NBR

SK5M

STS

STS

1

33

Maintenance

- Dimension of Impellers

995 x 45DS-25SW

DS-R40

DS-R40SW

DS-R32

DS-R32FW

127 x 57

95 x 63

81 x 54

95 x 54

9

9

8

9

DS-25

DS-20FW

DS-10

Pump Model

DS-15

D x W (mm)

65 x 50

65 x 39

52 x 22

56 x 37

7

7

6

Blade

7

9DS-R80SW 163 x 102

163 x 145

163 x 122

200 x 133

200 x 158

DS-R120FW

DS-R100FW

DS-R150FW

DS-R120SW 10

10

9

9

127 x 69

163 x 85

127 x 80

DS-R65SW

DS-R65FW

DS-R50

DS-R50SW

95 x 90

9

9

9

9

D mm

DS-R150SW

DS-R200FW

290 x 165 9

290 x 225 9

D x W (mm)Pump Model Blade

DS-R1S

DS-R1.5S

DS-R2S

DS-R2.5S

81 x 54

95 x 63

121 x 89

127 x 100

8

9

9

12

W mm

34

Maintenance- Dimension of Each Models

60

70

70

70

DS-R50SW 120

DS-R150FW

DS-R120SW

DS-R100FW

DS-R80SW

DS-R65SW

DS-R65FW 120

MODEL

DS-R32FW

DS-R25SW

DS-R20FW

DS-R40SW

DS-R40FW

100

100

120

100

B

2575

A C

32

2237

22

32

2237

37

1842

D E F G

units : mm

H I J K L M N 2-PS 4-fl

190

190

190

190

190

140

140

140

140

140

90

90

90

48

48

48

68

32

42

60

75

75

75

95

95

120

160

160

170

170

102

102

102

112

112

112

132

132

132

160

160

5 x 5 29

42

42

42

66

66

66

45

50

50

50

50

55

78

78

78

95

95

95

237

264

273

282

323

335

351

440

457

477

485

511

32

37

41

46

43

49

57

63

71

81

92

98

9

11

11

11

13

11

13

30

30

30

35

35

35

42

42

42

42

42

90

90

90

70

70

70

50

140

140

140

140

140

68

68

68

68

42

42

42

42

95

80

7 x 7

7 x 7

7 x 7

10 x 8

10 x 8

10 x 8

12 x 8

12 x 8

12 x 8

12 x 8

12 x 8

120

160

160

170

170 163

143

146

136

127

121

113

107

99

95

90

78 2-PS 3/4"

2-PS 1"

2-PS 1x1/4"

2-PS 1x1/2"

2-PS 1x1/2"

2-PS 2"

2-PS 2x1/2"

2-PS 2x1/2"

2-65A flange

2-80A flange

2-100A flange

2-125A flange

11

11

13

13

13

11

11

2.5S

2S

1.5S

1S91

95

109

11410 x 8

8 x 7

7 x 7

8070

112

70

11254

38

30

1160

55

42

37

356

330

263

257

124

118

80

80

12

6

5

57 x 7

100

100

102

118

118

100

100

4-fl2-Ferrule(Male)NMLKJIH

units : mm

GFED

49 22

72

72 32

28

49 22

CA

30

B

137

137

100

DS-R2.5S

DS-R1S

DS-R1.5S

DS-R2S

MODEL

56

50

56

50

Sanitary

Industry

DS-R150SW

DS-R200FW

240

240

L

F

BEDNM

HG

JK

C

AA

C

HG

JK

2-Flange

I-(KEY)

4-∅ 4-∅

65

65

185

185 185

185 88

88 48

48 200

200

14 x 9

14 x 9

210

210

649

589 100

130 181

151 2-125A flange

2-150A flange

17

17

100 11

35

Performance Curve (50Hz)

DS-R20FW DS-R25SW DS-R32FW

DS-R50SWDS-R40SWDS-R40FW

DS-R65FW DS-R65SW DS-R80SW

12 24 36 48 (l/m)0

10

20

30

40

0 (l/m)80604020

40

30

20

10

1450RPM

950RPM700RPM

1450RPM

950RPM700RPM

25 50 75 1000

10

20

30

40

(l/m)

1450RPM

950RPM700RPM

m m m

m

40

30

20

10

0 (l/m)120906030 0

10

20

30

40

m

40 80 120 160 (l/m)

700RPM

950RPM

1450RPM

1450RPM950R

PM700RPM

m

40

30

20

10

0 (l/m)20015010050

700RPM

950RPM

1450RPM

m

40

30

20

10

0 70 140 210 280 (l/m)

700RPM

950RPM

1450RPM

(l/m)4003002001000

10

20

30

40

m

700RPM

950RPM

1450RPM

m

40

30

20

10

0 120 240 360 480 (l/m)

700RPM

950RPM

1450RPM

36


DS-R2.5SDS-R2SDS-R1.5S

DS-R150SW DS-R200FW DS-R1S

DS-R150FWDS-R120SWDS-R100FW

(l/m)640480320160

10

20

30

40

m

0

700RPM

950RPM

1450RPM

0 240 480 720 960 (l/m)

m

40

30

20

10

1450RPM9

50RPM700R

PM

300 600 900 1200 (l/m)0

10

20

30

40

m

700RPM

950RPM

1450RPM

m

40

30

20

10

0 (l/m)280021001400700

700RPM

950RPM

1450RPM

1000 2000 3000 4000 (l/m)0

10

20

30

40

m

700RPM

950RPM

1450RPM

0 (l/m)

10

m

40

30

20

20 40 60 80

1450RPM950RPM700R

PM

20

30

40

m

10

120906030 (l/m)0

700RPM

950RPM

1450RPM

0 (l/m)70 140 210 280

10

m

40

30

20

1450RPM

950RPM

700RPM

400300200100 (l/m)0

10

20

30

40

m

700RPM

950RPM

1450RPM

37


DS-R20FW DS-R25SW DS-R32FW

DS-R50SWDS-R40SWDS-R40FW

DS-R65FW DS-R65SW DS-R80SW

13 26 39 52 (l/m)0

11

22

33

44

0 (l/m)88664422

44

33

22

11

1750RPM

1120RPM

830RPM

1750RPM

1120RPM

830RPM

30 60 90 1200

11

22

33

44

(l/m)

1450RPM

1120RPM8

30RPM

m m m

m

44

33

22

11

0 (l/m)1601208040 0

11

22

33

44

m

50 100 150 200 (l/m)830RPM

1120RPM

1750RPM

1750RPM

1120RPM8

30RPM

m

44

33

22

11

0 (l/m)26019513065

830RPM

1120RPM

1750RPM

m

44

33

22

11

0 80 160 240 320 (l/m)

830RPM

1120RPM

1750RPM

(l/m)5203902601300

11

22

33

44

m

830RPM

1120RPM

1750RPM

m

44

33

22

11

0 150 300 450 600 (l/m)

830RPM

1120RPM

1750RPM

38


DS-R2.5SDS-R2SDS-R1.5S

DS-R150SW DS-R200FW DS-R1S

DS-R150FWDS-R120SWDS-R100FW

(l/m)680510340170

11

22

33

44

m

0

830RPM

1120RPM

1750RPM

0 270 540 810 1080 (l/m)

m

44

33

22

11

1750RPM

1120RPM8

30RPM

350 700 1050 1400 (l/m)0

11

22

33

44

m

830RPM

1120RPM

1750RPM

m

44

33

22

11

0 (l/m)320024001600800830RPM

1120RPM

1750RPM

1100 2200 3300 4400 (l/m)0

11

22

33

44

m

830RPM

1120RPM

1750RPM

0 (l/m)

11

m

44

33

22

20 40 60 80

1750RPM

1120RPM

830RPM

22

33

44

m

11

1441087236 (l/m)0

830RPM

1120RPM

1750RPM

0 (l/m)80 160 240 320

11

m

44

33

22

1750RPM

1120RPM

830RPM

440330220110 (l/m)0

11

22

33

44

m

830RPM

1120RPM

1750RPM

39

Maintenance

- Specification of Mono Pump

PRESSURE

SANITARY MONO FLEX PUMP

INDUSTRIAL MONO FLEX PUMP

PRESSURE

DS-R100FW 7.5- 5.5

6P4Pkg/cm2

DSR-1S

DSR-2.5S

DSR-2S

DSR-1.5S 2 2

7.5

5

5

3

2 1

5

5.5

5.5

4.5

MODEL

DS-R200FW

DS-R150SW

DS-R150FW

DS-R120SW

DS-R120FW

HP

-

-

-

20

30

15

-

-

10

10

6.5

7

7

5.5

5.5

DS-R25 1/21 2.7

DS-R50

DS-R65

DS-R50SW

DS-R80SW

DS-R65SW

DS-R65FW

DS-R32

DS-R25SW

DS-R40SW

DS-R40

DS-R32FW

23 3.3

7.5 5

7.5

-

5

7.5

5

5

3

3

5

5.5

5.5

5.5

3.8

3 2

5

2

3

2

2

2

1

1

5.5

5.5

3.3

5.5

2.7

DS-R10

DS-R20FW

DS-R20

DS-R15

MODEL

6P4P

1/2 -

1

1/2

1/2

-

1/2 -

2.4

2.7

4.4

2.2

HP

kg/cm2

2-65A Flange 844 699 458540 400 337 482.1

537

438

2191

1603

650

40

147

210

71

50Hz

700(RPM)

60Hz 50Hz

1750(RPM)

1S Ferrule, Male

2S Ferrule, Male

1.5S Ferrule, Male

2.5S Ferrule, Male

179

525

368

100

148

305

435

83

1450(RPM)

PORT SIZE

2-150A Flange

2-125A Flange

2-125A Flange

2-100A Flange

2-100A Flange

4P

1625

4008

5478

1344

1094

1346

4539

3321

1113

906

50Hz60Hz 60Hz

950(RPM)1120(RPM)

114

235

336

64

97

285

200

54

830(RPM)

85

249

174

47

FLOW RATE (l/m)

6P

1040

3506

2565

860

700

882

2176

3005

594

729

8P

2598

1901

771

519

637

단위 유량

57

cc/Rev

210

300

102

767.8

625.0

3130

2290

928.5

50Hz

8

24

26

14

44

40

72

100

56

122

128

281

244

150

96

32

700(RPM)

25A PT 80 66

50A PT

2-65A Flange

65A PT

65A PT

65A PT

50A PT

32A PT

40A PT

40A PT

32A PT

25A PT

241 199

375

609

703

320

305

311

582

505

252

265

141

250

180

100

109

116

149

207

91

83

1750(RPM)

15A PT

20A PT

20A PT

10A PT

PORT SIZE

34

64

59

20

28

49

53

17

1450(RPM)

4P

60Hz 50Hz

4351 38

154 131

240

450

390

205

195

203

331

382

174

165

90

160

115

64

70

76

136

97

54

60

114

178

289

333

152

145

67

119

85

47

52

50Hz

950(RPM)1120(RPM)

22

41

38

13

19

35

32

11

FLOW RATE (l/m)

60Hz

6P

830(RPM)

16

30

28

10

60Hz

8P

45.5

137.5

183.0

174.1

401.7

348.2

214.2

62.5

57.1

142.8

102.6

80.3

cc/Rev

11.6

33.9

36.6

19.6

단위 유량

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