Self-Priming Pumps · D. WSP™ Air Release Valve Drawing and Parts List ..... 71 . WSP™ DATA SHEET WSP™ SELF-PRIMER PUMPS WSP

Self-Priming Pumps

Installation, Operation & Maintenance Instructions

Model 3-WSP WSP-D300

Trillium Flow Technologies

Tel: 801-359-8731 Fax: 801-530-7531

© Copyright 2019, The Factory. All rights reserved.

WSP™ DATA SHEET WSP™ SELF-PRIMER PUMPS WSP-D300

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I. INTRODUCTION ............................................................................................................ 4

PURPOSE ............................................................................................................................. 4

II. SAFETY ........................................................................................................................... 5

III. PREVENTIVE MAINTENANCE.................................................................................. 14

IV. DISASSEMBLY & REASSEMBLY OF THE PUMP & SEAL ................................... 16

A. REMOVING THE COVER PLATE & WEARPLATE ............................................. 18

B. REMOVING THE SUCTION CHECK VALVE ....................................................... 19

C. REMOVING THE ROTATING ASSEMBLY .......................................................... 19

D. REMOVING THE IMPELLER .................................................................................. 21

E. REMOVING THE SEAL ........................................................................................... 22

F. REMOVING & DISASSEMBLING THE SHAFT & BEARING............................. 22

G. DISASSEMBLY OF THE TWO-PIECE BEARING HOUSING.............................. 24

H. REASSEMBLING THE TWO-PIECE BEARING HOUSING ................................. 25

I. REASSEMBLING & INSTALLATING THE SHAFT & BEARING ...................... 25

J. INSTALLING THE MECHANICAL SEAL ............................................................. 28

1. Mechanical Seal Installation ................................................................................... 30

2. Cartridge Seal Installation....................................................................................... 31

K. INSTALLING & ADJUSTING THE IMPELLER .................................................... 32

L. INSTALLING THE ROTATING ASSEMBLY ........................................................ 33

M. INSTALLING THE SUCTION CHECK VALVE................................................. 33

N. INSTALLING & ADJUSTING THE BACK COVER .............................................. 33

V. MAINTAINING THE PRESSURE RELIEF VALVE ................................................... 35

A. Final Pump Assembly ................................................................................................. 36

VI. LUBRICATION ............................................................................................................. 36

A. Seal Cavity .................................................................................................................. 36

B. Bearing Cavity ............................................................................................................ 36

C. Power Source .............................................................................................................. 37

VII. TROUBLESHOOTING .................................................................................................. 37

VIII. INSTALLATION ........................................................................................................... 40

A. PUMP DIMENSIONS ................................................................................................ 40

B. INSPECTION PRIOR TO INSTALLATION ............................................................ 40

C. PUMP POSITIONING ............................................................................................... 41

1. Lifting ..................................................................................................................... 41

2. Mounting ................................................................................................................. 42

3. Clearance................................................................................................................. 42

D. SUCTION AND DISCHARGE PIPING .................................................................... 42

1. Materials ................................................................................................................. 42


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2. Configuring the Line ............................................................................................... 42

3. Pump Connections .................................................................................................. 43

4. Gauges..................................................................................................................... 43

E. SUCTION LINES ....................................................................................................... 43

1. Fittings .................................................................................................................... 43

2. Strainers .................................................................................................................. 43

3. Sealing..................................................................................................................... 44

4. Suction Lines in Sumps .......................................................................................... 44

5. Suction Line Positioning ......................................................................................... 45

F. DISCHARGE LINES ................................................................................................. 46

1. Siphoning ................................................................................................................ 46

2. Valves ..................................................................................................................... 46

3. Bypass Lines ........................................................................................................... 47

G. WSP™ AUTOMATIC AIR RELEASE VALVE (WSP™ ARV) ............................. 48

1. Theory of Operation ................................................................................................ 49

2. WSP™ Air Release Valve Installation ................................................................... 51

H. ALIGNMENT ............................................................................................................. 52

1. Coupled Drives ....................................................................................................... 53

2. Spider Insert-type Couplings .................................................................................. 53

3. Non-Spider Type Couplings ................................................................................... 53

4. V-Belt Drives .......................................................................................................... 54

IX. OPERATION .................................................................................................................. 55

1. Lines with a Bypass ................................................................................................ 56

2. Lines Without a Bypass .......................................................................................... 57

3. Leaking ................................................................................................................... 57

4. Liquid Temperature and Overheating ..................................................................... 57

5. Strainer Check ......................................................................................................... 58

6. Checking the Pump Vacuum .................................................................................. 58

X. TECHNICAL DATA ...................................................................................................... 61

A. 3” WSP Curve ............................................................................................................. 61

B. 3” WSP General Arrangement Drawing ..................................................................... 62

C. 3” WSP Sectional Drawing and Parts List .................................................................. 64

D. WSP™ Air Release Valve Drawing and Parts List .................................................... 71


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I. INTRODUCTION

Warning levels applying to the safe installation, operation and maintenance of all sizes of WSP™ Self-Primer (WSP) pumps can be located at the beginning of this manual. You must refer to the manual accompanying your power source before attempting to begin operation since Weir Specialty Pumps has no control over or special knowledge of the power source to which you will connect these pumps.

You have made a wise decision in your purchase of a WSP™ Self-Primer (WSP) pump, and we thank you for your business. To learn how to install and operate your pump safely, read this manual carefully. Failure to follow the enclosed instructions may result in damage to the pump or personal injury. The WSP™ Self-Primer Pump Installation, Operation, and Maintenance manual was created to help you maximize the pump’s performance while achieving the longest life possible.

Your pump is a centrifugal, self-priming model featuring a semi-open impeller and suction check valve. The pump is designed with external shimless adjusters for setting the wear plate to impeller clearance. It pumps liquids containing large, entrained solids as well as slurries. Its basic material is ductile iron with a cast steel impeller and a steel wearplate.

For questions about the pump or its application not covered in this manual or other documentation included with the unit, please contact your WSP™ distributor, or write to:

Trillium Flow Technologies

Phone: (801) 359-8731

Contact the power source manufacturer’s local dealer or representative for information or technical assistance on your power source before attempting installation or operation of this Weir Self-Primer Pump.

PURPOSE

This manual is designed for all levels of users from a novice to an experienced operator. It provides employees with known procedures requiring extra attention as well as providing information on unsafe situations that could damage the equipment and/or be dangerous to the operator. While Weir Specialty Pumps is providing you with this information, we cannot anticipate or provide detailed precautions for every situation that could occur during maintenance of the unit. It is your responsibility, as the owner and/or maintenance person, to be sure you always use safe and established maintenance procedures and that any procedures not included in this manual are performed only after ensuring you are not compromising either personal safety or your pump’s integrity by such practices.


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IMMEDIATE HAZARDS WHICH WILL RESULT

IN SEVERE PERSONAL INJURY OR DEATH.

THESE INSTRUCTIONS DESCRIBE THE

PROCEDURE REQUIRED AND THE INJURY

WHICH WILL RESULT FROM FAILURE TO

FOLLOW THE PROCEDURE.

HAZARDS OR UNSAFE PRACTICES WHICH

COULD RESULT IN SEVERE PERSONAL

INJURY OR DEATH. THESE INSTRUCTIONS

DESCRIBE THE PROCEDURE REQUIRED

AND THE INJURY WHICH COULD RESULT

FROM FAILURE TO FOLLOW THE

PROCEDURE.

HAZARDS OR UNSAFE PRACTICES WHICH

COULD RESULT IN MINOR PERSONAL

INJURY OR PRODUCT OR PROPERTY

DAMAGE WHICH COULD RESULT FROM

FAILURE TO FOLLOW THE PROCEDURE.

II. SAFETY

The installation, operation and maintenance warnings for all sized WSP™ Self-Primer (WSP) Pumps follows:

PLEASE STUDY THESE INSTRUCTIONS CAREFULLY BEFORE PUTTING THE

PUMP INTO SERVICE. ADHERENCE TO THESE INSTRUCTIONS IS NECESSARY

TO ENSURE THAT OPERATOR SAFETY AND SATISFACTORY PUMP OPERATION

ARE NEVER COMPROMISED. OPERATING PERSONNEL MUST READ AND

UNDERSTAND THESE INSTRUCTIONS BEFORE ANY ATTEMPT TO SERVICE THE

PUMP IS MADE.


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FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN SEVERE INJURY.

WHEN A MANUAL SHUT-OFF VALVE IS INSTALLED IN A BYPASS LINE, IT MUST

REMAIN OPEN DURING OPERATION. CLOSING THE MANUAL SHUT-OFF VALVE

COULD CAUSE A PUMP, WHICH HAS LOST PRIME, TO CONTINUE TO OPERATE

WITHOUT REACHING PRIME. THIS COULD CAUSE DANGEROUS OVERHEATING OF

THE PUMP AND POSSIBLY RUPTURE THE PUMP CASING.

BEFORE SERVICING, ALLOW SUFFICIENT TIME FOR THE OVERHEATED PUMP TO

COMPLETELY COOL. ONCE THE PUMP HAS COMPLETELY COOLED, DRAIN THE

LIQUID FROM THE PUMP BY REMOVING THE CASING DRAIN PLUG. WHEN

REMOVING THE DRAIN PLUG, USE CAUTION. FAILURE TO DO SO MAY RESULT IN

INJURY. PLATES, COVERS, GAUGES, OR FITTINGS MUST NOT BE REMOVED FROM

AN OVERHEATED PUMP. LIQUIDS IN THE PUMP CAN REACH BOILING

TEMPERATURES AND PRESSURE INSIDE THE PUMP CAN CAUSE PARTS TO BE

EXPELLED VIOLENTLY.

BEFORE SERVICING, ALLOW SUFFICIENT TIME FOR AN OVERHEATED PUMP TO




INJURY. PLATES, COVERS, GAUGES, OR FITTINGS MUST NOT BE REMOVED

FROM AN OVERHEATED PUMP. LIQUIDS IN THE PUMP CAN REACH BOILING

TEMPERATURES AND VAPOR PRESSURE INSIDE THE PUMP CAN CAUSE PARTS

TO BE EXPELLED VIOLENTLY.


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WHEN PERFORMING EQUIPMENT MAINTENANCE OR IF THE PUMP IS TO

REMAIN OUT OF SERVICE FOR A PERIOD OF TIME, THE EQUIPMENT

ELECTRICAL SERVICE MUST BE DISCONNECTED WITH AN APPROVED

LOCKOUT AND KEY. FAILURE TO LOCK OUT THE EQUIPMENT MAY RESULT IN

INJURY.

1. IF OVERHEATED, THE PUMP MUST BE ALLOWED TO COMPLETELY

COOL BEFORE ATTEMPTING ANY PROCEDURES.

2. CHECK THE TEMPERATURE BEFORE OPENING ANY COVERS,

PLATES, OR PLUGS.

3. ENSURE THAT SUCTION AND DISCHARGE VALVES ARE CLOSED.

4. SLOWLY AND CAREFULLY VENT THE PUMP.

5. DRAIN THE PUMP.

ONCE THE PUMP HAS BEEN POSITIONED, ENSURE THAT ALL PUMP AND PIPING

CONNECTIONS ARE TIGHTENED, SECURED, AND SUPPORTED PROPERLY.

ALL GUARDS AND PROTECTIVE DEVICES MUST BE INSTALLED BEFORE THE PUMP

IS STARTED. CONTACT WITH UNGUARDED BELTS, SHEAVES, OR COUPLINGS

COULD RESULT IN INJURY.

PLATES, COVERS, GAUGES, PIPE PLUGS, OR FITTINGS MUST NOT BE

REMOVED FROM AN OVERHEATED PUMP. VAPOR PRESSURE WITHIN THE

PUMP MAY CAUSE PARTS TO BECOME DISENGAGED AND EJECTED WITH

GREAT FORCE, CAUSING POTENTIAL SEVERE INJURY TO PERSONNEL.

ALWAYS ALLOW THE PUMP TO COOL BEFORE SERVICING ANY EQUIPMENT.


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DO NOT OPERATE PUMP WITH BOTH SUCTION AND DISCHARGE VALVES CLOSED

OR WITH SUCTION OR DISCHARGE BLOCKED BY CLOGGING – THIS COULD CAUSE

DAMAGE AND IS DANGEROUS. THESE PUMPS ARE TO BE USED FOR LIQUID

SERVICE ONLY. EXCESSIVE PRESSURE CAN CAUSE MALFUNCTION LEADING TO

INJURY.

PUMP LIFTING EYES ON THE SELF-PRIMING PUMP ARE ONLY DESIGNED TO

HANDLE THE WEIGHT OF THE BARE PUMP. BEFORE LIFTING, ENSURE THAT

ALL SUCTION AND DISCHARGE HOSES AND PIPING HAVE BEEN REMOVED

FROM THE PUMP, AND THE PUMP IS FREE FROM ANY BASE OR DRIVER.

EQUIPMENT LIFTING DEVICES SUCH AS CHAIN, LIFTING EYES, HOOKS, ETC.,

MUST BE APPROVED BY LOCAL, STATE, OR FEDERAL SAFETY CODES.

HOIST AND CRANES MUST BE ADEQUATELY SIZED TO LIFT RATED LOADS.

FAILURE TO USE APPROVED LIFTING DEVICES MAY RESULT IN INJURY.

ENSURE THAT THE BYPASS LINE IS DIRECTED BACK INTO THE WET-WELL OR TANK

TO PREVENT HAZARDOUS SPILLS AS SOME LEAKING (1 TO 5 GALLONS [3.8 TO 19

LITERS] PER MINUTE) WILL OCCUR WHEN THE VALVE IS IN THE FULL-CLOSED

POSITION.

WHEN CHECKING ALIGNMENT YOU MUST FIRST DISCONNECT THE POWER

SOURCE.


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YOUR PUMP HAS BEEN ENGINEERED TO PUMP LIQUIDS THAT CONTAIN SOLIDS OR

SLURRIES. AT NO TIME SHOULD THE LIQUID BE VOLATILE, CORROSIVE, OR

COMBUSTIBLE. FAILURE TO DO SO COULD DAMAGE THE PUMP OR RESULT IN

INJURY.

AFTER THE PUMP CASING HAS BEEN FILLED, REINSTALL AND TIGHTEN THE FILL

PLUG. FAILURE TO OPERATE THE PUMP WITHOUT ALL CONNECTION PIPING

SECURELY INSTALLED COULD CAUSE LIQUID IN THE PUMP TO BE FORCED OUT

UNDER PRESSURE AND MAY RESULT IN INJURY.

PRIOR TO WORKING ON THIS PUMP, ALWAYS LOCK OUT OR DISCONNECT THE

PUMP FROM ITS POWER SOURCE. IT MUST REMAIN INOPERABLE DURING REPAIRS.

NO PERSON SHOULD ATTEMPT TO OPEN OR SERVICE THIS PUMP BEFORE

BECOMING THOROUGHLY FAMILIAR WITH ALL THE PROCEDURES OUTLINED

IN THIS MANUAL.

1. PLEASE STUDY THESE INSTRUCTIONS CAREFULLY.

2. WHEN PERFORMING EQUIPMENT MAINTENANCE, THE EQUIPMENT

ELECTRICAL SERVICE MUST BE LOCKED OUT WITH AN APPROVED

LOCKOUT AND KEY.

3. IF THE PUMP HAS OVERHEATED, ALLOW SUFFICIENT TIME FOR THE

PUMP TO COMPLETELY COOL BEFORE ATTEMPTING TO OPEN OR

SERVICE THE PUMP.

4. CAREFULLY CHECK THE TEMPERATURES BEFORE OPENING ANY

COVERS, PLATES, OR PLUGS.

5. CLOSE THE SUCTION AND DISCHARGE VALVES.


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6. CAREFULLY AND SLOWLY VENT THE PUMP.

7. DRAIN THE PUMP.

PUMP LIFTING EYES ON THE SELF-PRIMING PUMP ARE ONLY DESIGNED TO

HANDLE THE WEIGHT OF THE BARE PUMP. BEFORE LIFTING, ENSURE

THAT ALL SUCTION AND DISCHARGE HOSES AND PIPING HAVE BEEN

REMOVED FROM THE PUMP, AND IT IS FREE OF ANY BASE AND DRIVER.

EQUIPMENT LIFTING DEVICES SUCH AS CHAIN, LIFTING EYES, HOOKS, ETC.,

MUST BE APPROVED BY LOCAL, STATE, OR FEDERAL SAFETY CODES.

HOIST AND CRANES MUST BE ADEQUATELY SIZED TO LIFT RATED LOADS.

FAILURE TO USE APPROVED LIFTING DEVICES MAY RESULT IN INJURY.

BEFORE USING ANY CLEANING SOLVENTS CAREFULLY READ AND FOLLOW ALL

PRECAUTIONS PRINTED ON THE SOLVENT CONTAINER. CLEANING SOLVENTS ARE

KNOWN TO BE TOXIC AND FLAMMABLE AND ARE ONLY TO BE USED IN WELL-

VENTILATED AREAS AWAY FROM EXCESSIVE HEAT, SPARKS, AND FLAMES.

PRESSURE WITHIN THE PUMP MAY CAUSE PARTS TO BECOME DISENGAGED

AND EXPELED VIOLENTLY, CAUSING POTENTIAL SEVERE INJURY TO

PERSONNEL. ALWAYS ALLOW THE PUMP TO COOL BEFORE SERVICING.


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THIS PUMP SHOULD ONLY BE OPERATED IN THE DIRECTION SHOWN ON THE

ARROW ON THE PUMP BODY AND ON ANY ACCOMPANYING DECALS.

SERIOUS DAMAGE COULD OCCUR TO THE PUMP ASSEMBLY IF BOTH LIFTING EYES

ARE NOT UTILIZED DURING LIFTING AND MOVEMENT OF THE UNIT. ONLY LIFT THE

PUMP WITH THE LIFTING EYES.

IN HIGH DISCHARGE HEAD APPLICATIONS THE DISCHARGE THROTTLING VALVE

MUST BE GRADUALLY CLOSED BEFORE THE PUMP IS STOPPED.

BYPASS LINES MUST BE SECURED AGAINST BEING DRAWN INTO THE PUMP

SUCTION INLET WHEN RETURNED TO A WET WELL.

ALIGNMENT ADJUSTMENT IN ONE DIRECTION MAY DISRUPT ALIGNMENT

ADJUSTMENT IN ANOTHER DIRECTION. CHECK EACH PROCEDURE AFTER

ALTERING ALIGNMENT.

PUMP PERFORMANCE INCLUDING SPEED AND OPERATING CONDITIONS ARE

REQUIRED TO BE WITHIN THE RANGE SHOWN ON THE MANUFACTURER’S PUMP

PERFORMANCE CURVE.


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THIS PUMP SHOULD ALWAYS BE OPERATED WITH LIQUID IN THE PUMP CASING.

WHEN OPERATING THE PUMP DRY, THE PUMP WILL NOT PRIME.

DISASSEMBLY OF THE SHAFT AND BEARING IS NOT RECOMMENDED IN THE FIELD.

PERFORM THESE OPERATIONS ONLY IN A PROPERLY EQUIPPED SHOP BY

QUALIFIED TECHNICIANS.

IT IS RECOMMENDED THAT THE BEARING BE CLEANED AND INSPECTED IN PLACE

TO PREVENT DAMAGE DURING REMOVAL FROM THE SHAFT. WE HIGHLY

RECOMMEND REPLACEMENT OF THE BEARINGS ANYTIME THE SHAFT AND

BEARINGS ARE REMOVED.

BEARINGS MUST BE KEPT IN AN ENVIRONMENT THAT IS FREE OF ALL DIRT AND

FOREIGN MATERIAL. FAILURE TO DO SO WILL RESULT IN A SHORTER BEARING

LIFE. THE BEARINGS SHOULD NEVER BE SPUN DRY AS THIS MAY SCRATCH THE

BALLS OR RACES AND WILL CAUSE PREMATURE BEARING FAILURE.

NEVER PRESS OR HIT AGAINST THE OUTER RACE, BALLS, OR BALL CAGE DURING

BEARING INSTALLATION ONTO THE SHAFT. PRESS THE INNER RACE ONLY.

PUSH AGAINST THE OUTER RACE DURING INSTALLATION OF THE BEARINGS INTO

THE BEARING BORE. NEVER STRIKE THE BALL CAGE OR BALLS.


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ANY TIME THE OLD SEAL IS REMOVED FROM THE PUMP A NEW SEAL ASSEMBLY

SHOULD BE INSTALLED. DURING REASSEMBLY WEAR PATTERNS ON THE

FINISHED FACES CANNOT BE REALIGNED. PREMATURE SEAL FAILURE WILL

RESULT FROM USING AN OLD SEAL.

OPERATION AT TEMPERATURES ABOVE 160OF (71

OC). IS NOT RECOMMENDED FOR

THIS SEAL. THIS PUMP SHOULD NOT BE USED AT HIGHER OPERATING

TEMPERATURES, WITHOUT CONSULTING THE FACTORY.

WHEN REUSING AN OLD SEAL, DO NOT ATTEMPT TO SEPARATE THE

ROTATING PORTION OF THE SEAL FROM THE SHAFT SLEEVE. DURING USE

THE RUBBER BELLOWS WILL BOND TO THE SLEEVE AND ATTEMPTING TO

SEPARATE THEM WILL DAMAGE THE BELLOWS.

BEFORE REINSTALLING THE IMPELLER, COMPLETELY CLEAN THE SHAFT AND

IMPELLER THREADS. THE SMALLEST AMOUNT OF DIRT ON THE THREADS COULD

CAUSE THE IMPELLER TO SEIZE ON THE SHAFT, WHICH, IN TURN, MAKES FUTURE

REMOVAL DIFFICULT IF NOT IMPOSSIBLE WITHOUT SHAFT AND IMPELLER

DAMAGE.

INSTALLATION AND OPERATION OF THE PUMPS AND ASSOCIATED EQUIPMENT

MUST BE IN ACCORDANCE WITH ALL NATIONAL AND LOCAL CODES, AS WELL AS

INDUSTRY STANDARDS.


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REGULARLY OBSERVE THE CONDITION OF THE BEARING LUBRICANT FOR SIGNS

OF RUST OR MOISTURE, ESPECIALLY IN AREAS WHERE VARYING HOT AND COLD

TEMPERATURES ARE TYPICAL.

III. PREVENTIVE MAINTENANCE

Wear on the pump is affected by any number of pump applications. Abrasive qualities due to specific applications as well as the pressure and the liquid temperature being pumped will all cause pump wear. This section provides basic practices and recommendations for preventive maintenance on your WSP™ Self-Primer pump. Following a consistent preventive maintenance schedule will help maintain peak performance and an extended life from your WSP™ Self-Primer pump. If you have questions about your current or proposed application, contact your WSP™ distributor or the Weir Specialty Pump factory. The key to a quality preventive maintenance program is continuous record keeping. Always note changes in suction and discharge gauge readings if your pump includes such gauges. If there are changes between regular inspections, it may indicate some type of dysfunction that can be corrected before damage to your system or total failure happens. Document any wearing parts during inspections for later comparison. Make note in your records whether certain parts fail during the same duty cycle so the part can be checked and replaced before it fails. This helps reduce unscheduled down time. Inspect wearing parts at 250 hours to ascertain the wear rate when implementing new applications. Later inspections should be completed at designated times noted on the following chart. Be aware that critical applications must be inspected more frequently.

THIS SPACE INTENTIONALLY LEFT BLANK


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Preventive Maintenance Guide

Daily Service Owner Status Notes

Check the following:

Check the overall condition of the pump

Notice: Hardware for tightness

Are there any leaks?

Is there unusual vibration?

Monitor and record the gauge readings

Are the speed and flow normal?

Weekly Service Owner Status Notes


Bearing oil level in the sight gauge

Notice if the bearing oil is cloudy. If the oil is cloudy, drain and replace.

Seal oil level and condition. If the oil is cloudy, drain and replace.

Monthly Service Owner Status Notes

Check the following: If your pump is driven by V-Belts

Check tightness

Alignment of belts

Tension belts

Check the following: If your pump is direct drive with a coupling

Inspect the coupling for signs of:

− Wear

− Misalignment

− Loose fasteners

Check the following: If your pump has an Air Release Valve

Inspect and lubricate

Semi Annually Service Owner Status Notes


Adjust impeller to wear plate clearance

Adjust impeller to seal plate clearance

Inspect, clean and lubricate air release valve

Annually Service Owner Status Notes


Piping for:

− Leaks

− Loose fasteners

Bearing oil:

− Drain and replace

Seal oil:

− Drain and replace

Note: Service interval based on an intermittent duty cycle equal to approximately 4000 hours annually. Adjust schedule as required for lower or higher duty cycles or extreme

operating conditions.


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IV. DISASSEMBLY & REASSEMBLY OF THE PUMP & SEAL

Review all warnings before performing installation and follow the directions on all tags, labels, and decals attached to the pump very closely. Your pump requires minimum service due to its rugged, low maintenance design. Should you need to inspect or replace wearing parts, follow these instructions. They match the sectional views and the list of appropriate parts. Instructions in this manual are intended to inform the operator about any procedures that need extra attention. It will also make note of procedures that could damage equipment or cause danger to the operator and/or other employees. This manual will not anticipate or provide in-depth precautions for every possible situation that could happen during maintenance or repair of the WSP™ Self-Primer Pump. As always, it is the owner’s and maintenance staff’s duty to be sure that safety and established maintenance procedures and processes are used. Any procedures or processes not noted in this manual should only be completed after determining that personal safety and equipment integrity is not harmed. A number of servicing functions may be completed by draining all the liquid from the pump and removing the cover plate assembly. Before making significant repairs, disconnect the power source and piping. The following instructions require complete disassembly. Before disassembly, determine the material type and configuration of the pump if unknown. The first set of characters in the pump name describes the size and model of the pump (3-WSP is a 3” self-primer). Use the following key to determine the materials used in the pump from the remaining characters in the pump name.



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* This letter indicates a Ductile Iron pump case with a Hi-Chrome Cover Plate. A Hi-Chrome case is not available. For example, 3-WSP-BBBBB-B1-BLG is a stainless pump with a stainless ANSI flange, stainless hardware, nitrile o-rings, and Type 2 tungsten carbide seal. If an “X” is present in the materials code, please contact the factory providing the pump serial number for assistance in determining the material type and configuration of the pump. Prior to working on the pump, lock out or disconnect its power source. It must remain inoperable during repairs. Next, shut all the valves in both discharge and suction lines.

PRIOR TO WORKING ON THIS PUMP, ALWAYS LOCK OUT OR DISCONNECT THE PUMP FROM ITS POWER SOURCE. IT MUST REMAIN INOPERABLE DURING REPAIRS.

Digit 1 Digit 2 Digit 3 Digit 4 Digit 5 - Digit 6 - Digit 7 Digit 8 Digit 9

Case / Cover Plate

Seal

Plate Wear Plate

Bearing

Housing Impeller - Flanges - Hardware O-rings Seal

A – DI A - CI A - Steel A - DI/CI A - Steel - A1 - CI ANSI - A - Steel L - Nitrile F - Type 2 SC

B – SS B - CD4

B – SS

8 & 10” – CD4

B – SST/CI

2” – CD4/CI B - CD4 - A2 - CI DIN - B - Stainless M - Buna G - Type 2 TC

*C – HiCr (DI/HiCr) C - HiCr

C – HiCr

ONLY 8” & 10” C – HiCr/CI C - HiCr - A3 - CI JIS N - Viton H - Type 9 SS

D – Mangabraze

Except 8”

D – DI

3” ONLY

A4 - CI NPT

P - Kalrez I - Type 9 TT

E - DI

A5 - CI BSP

B1 - SS ANSI

B2 - SS DIN

B3 - SS JIS

B4 - SS NPT

B5 - SS BSP

X - Other

X-

Other X - Other X - Other X - Other

X - Other

X - Other X - Other X - Other


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To take apart and repair the power source, refer to the documentation supplied with your power source, or contact your local power source representative.



IN THIS MANUAL.




LOCKOUT AND KEY.



SERVICE THE PUMP.





7. DRAIN THE PUMP.

A. REMOVING THE COVER PLATE & WEARPLATE

Remove the pump casing drain plug. Drain the pump before attempting to maintain or repair the unit. Once the cover plate assembly is removed, the wearplate becomes accessible and is easy to maintain. When service or repair is completed, clean, inspect and reinstall the drain plug. After removing the hand nuts, use the adjuster knobs; pull (or use jackbolts to remove) the cover plate and assembled wearplate from the pump casing. Using a straight edge across the face of the wear plate, determine how much wear has taken place. If more the 1/8th inch out of flat, the wear plate should be replaced (Figure 1).


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Figure 1

Disengage the hardware to remove the wearplate then inspect it and replace if it is badly gouged or worn.

Carefully inspect the O-rings in the back cover and replace if worn or damaged.

B. REMOVING THE SUCTION CHECK VALVE

Remove the check valve pin. Pull the complete assembly from the suction flange by reaching through the back cover opening. Once this is completed, service, inspect and replace the check valve assembly.

NOTE: Additional check value disassembly is not needed. It must be replaced as a

complete unit since individual parts are not sold separately.

C. REMOVING THE ROTATING ASSEMBLY

To service the rotating assembly without disconnecting the suction or discharge piping, remove the power source. This will provide clearance for servicing. To prevent seal cavity oil from escaping when the impeller is loosened, remove the seal cavity drain plug, and drain the oil in the seal cavity before loosening the impeller. With the rotating assembly still attached to the pump casing, loosen the impeller. When done, clean, inspect and reinstall the drain plug in the seal cavity. Wedge a block of wood between the impeller vanes and the pump casing prior to removing the impeller capscrew and washer. Install the impeller shaft key before installing a lathe dog on the drive end of the shaft. When installing the lathe dog, be sure the “V” notch is positioned over the shaft key.


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While the impeller rotation still has a block (Figure 2), use a piece of long, heavy bar to lever against the arm of the lathe dog in a counterclockwise direction (You should be facing the drive end of the shaft.). Be very careful and avoid damaging either the keyway or the shaft. Once the impeller is dislodged, take out the lathe dog, the wood block and the key.

Figure 2

Remove hardware attaching the rotating assembly to the pump casing. Use the jackbolts to detach the rotating assembly by pulling directly away from the pump casing, then tag and tie the rotating assembly shims to simplify reassembly.


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Figure 3

NOTE: If you prefer, a tool for disassembly may be obtained from Weir Specialty

Pumps. Should you select this option, follow all instructions included in the package. You may construct a tool that is similar if you use a ½-inch pipe made of schedule 80 steel or malleable iron with a standard tee connection (Figure 3). All threads should be ½-inch NPT. Do not build the tool beforehand.

When installing the tool, remove the vented plug from the bearing housing, then screw the longest pipe length into the vent hole until completely attached. Fasten the tee, and screw in both handles. Be very careful when lifting the rotating assembly. This will prevent damage to the unit and reduce possibilities of personal injury.

Finally, remove the O-ring from the bearing housing.

D. REMOVING THE IMPELLER

Carefully detach the impeller from the shaft after the rotating assembly is removed from the pump casing. Because the tension on the shaft seal spring will be released as it is removed, use extra care and caution. Inspect and replace the impeller if it is severely worn or shows cracking. After removing the adjusting shims from the impeller, either tag and tie them or measure and record their thickness to make the impeller reassembly easier.


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E. REMOVING THE SEAL

Slide the shaft sleeve with the rotating part of the seal off the shaft as one unit. (Figure 4)

Figure 4

Take off the stationary element and the seat with a pair of stiff wires that have hooks on their ends, or remove the hardware then pull the sealplate and gasket from the bearing housing. With the sealplate on a level surface, impeller side down, use a wooden dowel or other appropriate tool to press the backside of the stationary seat until both the seat and the O-rings are loose enough to remove then take out the shaft sleeve O-ring. When no additional disassembly is needed, refer to Section IV. Part H. INSTALLING THE SEAL.

F. REMOVING & DISASSEMBLING THE SHAFT & BEARING

The bearing housing should not need to be taken apart if the pump has been correctly operated and maintained. If there is evidence of damage or wear, then disassemble the shaft and bearings.


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DISASSEMBLY OF THE SHAFT AND BEARING IS NOT RECOMMENDED IN THE FIELD.

PERFORM THESE OPERATIONS ONLY IN A PROPERLY EQUIPPED SHOP BY

QUALIFIED TECHNICIANS.

Remove the drain plug from the bearing housing. Drain the lubricant then clean, inspect and reinsert the drain plug.

Disconnect the pump hardware before sliding the bearing cap and oil seal from the shaft. Push the oil seal from the bearing cap after removing its gasket. After placing a block of wood against the shaft at the end of the impeller, tap the shaft and bearings from the bearing housing. Press or pull the oil seals from the bearing housing. Once the shaft and bearing are removed, clean and inspect the bearings that are still in place. Follow these instructions: soak a soft cloth in cleaning solvent and thoroughly wipe down the bearing housing, the shaft, and all the component parts with the exception of the bearings. Check all parts for damage or wear and replace any that are defective.









Use fresh cleaning solvent, thoroughly clean bearings. To dry them, use compress, filtered air then lubricate with light oil.


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BEARINGS MUST BE KEPT IN AN ENVIRONMENT THAT IS FREE OF ALL DIRT AND

FOREIGN MATERIAL. FAILURE TO DO SO WILL RESULT IN A SHORTER BEARING

LIFE. THE BEARINGS SHOULD NEVER BE SPUN DRY AS THIS MAY SCRATCH THE

BALLS OR RACES AND WILL CAUSE PREMATURE BEARING FAILURE.

To check for roughness or bearing binding, rotate bearings by hand and inspect the balls. If the bearing balls are discolored or rotating them is rough, replace the bearings. Bearing tolerances provide tight fit of the bearings onto the pump shaft as well as a snug fit in the bearing housing. The bearing housing, the bearings or the shaft should be replaced if adequate bearing fit is not maintained. If the bearings need to be replaced, take off the outboard bearing snap ring, and press the bearings from the shaft or use a bearing puller instead.

G. DISASSEMBLY OF THE TWO-PIECE BEARING HOUSING NOTE: The two-piece bearing housing comes assembled from the factory and

should not require disassembly. If disassembly is necessary, the following applies.

Remove the bolts holding the inner and outer sections of the two-piece bearing housing together (See Figure 5). Use a thin wedge (i.e. common putty knife) to separate the inner and outer bearing housing halves taking care not to damage the mating surfaces. Replace the O-ring as needed.



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Figure 5

H. REASSEMBLING THE TWO-PIECE BEARING HOUSING

Replace and lubricate the O-ring. Place the inner bearing housing half into the outer bearing housing half and install the four bolts and lock washers (See Figure 5). Torque the bolts to 67 lb-ft for dry threads and 40 lb-ft for lubricated threads.

I. REASSEMBLING & INSTALLATING THE SHAFT & BEARING

Soak a soft cloth in cleaning solvent and wipe down the bearing housing, the shaft, and all component parts with the exception of the bearings. Check all parts for damage or wear and replace any that are defective.





Carefully inspect the pump shaft for nicks or scratches, any distortion, or for thread damage on the impeller end. Use a fine file or emery cloth to remove small nicks and burrs. Replace the old shaft if it is damaged or defective.


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Refer to Figure 6 for correct positioning of the inboard oil seals in the bearing housing bore with the lip positioned as shown in the diagram. Push the oil seal into the housing until the face is exactly even with the counterbored surface closest to you during the installation.





PUSH AGAINST THE OUTER RACE DURING INSTALLATION OF THE BEARINGS INTO

THE BEARING BORE. NEVER STRIKE THE BALL CAGE OR BALLS.

NOTE: To correctly install the outboard bearing on the shaft, place it with the integral

retaining ring on the bearing O.D. near the drive end of the shaft.

To ease installation, the bearings may be heated with an induction heater, an electric oven, a hot plate or a hot oil bath. Bearings should never be heated directly on a hot plate or by using a direct flame.

NOTE: When using a hot oil bath to heat the bearings, be sure both the oil and

container are absolutely clean. If the oil was previously used, thoroughly filter it before using.

When the bearings are heated to a uniform 250º F (120º C), slide the bearings onto the shaft individually until they are all fully seated. Prevent bearings from cooling too quickly and sticking on the shaft by sliding them on the shaft rapidly in a single continuous motion.

When heating the bearings is not practical, use an appropriately sized sleeve along with an arbor or hydraulic press to install bearings on the shaft.

NEVER PRESS OR HIT AGAINST THE OUTER RACE, BALLS, OR BALL CAGE DURING

BEARING INSTALLATION ONTO THE SHAFT. PRESS THE INNER RACE ONLY.


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Use the bearing snap ring to attach the outboard bearing on the shaft. Weir Specialty Pumps recommends the use of a WSP shaft installation tool or a properly tapered sleeve if the WSP shaft tool in unavailable. This will prevent the lip of the oil seal from rolling as the shaft and bearings are installed in the bearing housing. When the lip seal sleeve is installed, lubricate the lip seal portion of the shaft before sliding the shaft and assembled bearings into the bearing housing. The retaining ring on the outboard bearing should be seated against the bearing housing. Next, remove the installation tool or properly tapered sleeve. Once the lip is positioned as shown in Figure 6, push the inboard oil seal into the bearing housing bore. Now, push the outboard oil seal into the bearing cap while the lip is positioned as noted in Figure 6. Replace the bearing cap gasket and attach the bearing cap with its hardware. Take care not to damage the oil seal lip on the shaft keyway.

Figure 6

Follow instructions in Section VI. LUBRICATION, to lubricate the bearing housing correctly.


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J. INSTALLING THE MECHANICAL SEAL





Soak a cloth in fresh cleaning solvent. Thoroughly wipe down the seal cavity and the shaft. Look carefully for nicks, burrs, and debris in the stationary seat bore located in the sealplate. Remove any that exist and be sure the stationary seat bore is thoroughly clean before you install the seal (Figure 7).

Figure 7


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ANY TIME THE OLD SEAL IS REMOVED FROM THE PUMP A NEW SEAL ASSEMBLY

SHOULD BE INSTALLED. DURING REASSEMBLY WEAR PATTERNS ON THE

FINISHED FACES CANNOT BE REALIGNED. PREMATURE SEAL FAILURE WILL

RESULT FROM USING AN OLD SEAL.

Facilitate seal installation by lubricating the shaft sleeve O-ring and the external stationary seat O-ring with a tiny amount of light lubricating oil. (Figure 8 shows seal part identification).

Figure 8

OPERATION AT TEMPERATURES ABOVE 160OF (71

OC). IS NOT RECOMMENDED FOR

THIS SEAL. THIS PUMP SHOULD NOT BE USED AT HIGHER OPERATING

TEMPERATURES, WITHOUT CONSULTING THE FACTORY.


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WHEN REUSING AN OLD SEAL, DO NOT ATTEMPT TO SEPARATE THE ROTATING

PORTION OF THE SEAL FROM THE SHAFT SLEEVE. DURING USE THE RUBBER

BELLOWS WILL BOND TO THE SLEEVE AND ATTEMPTING TO SEPARATE THEM

WILL DAMAGE THE BELLOWS.

1. Mechanical Seal Installation

1. Install the sealplate gasket if the sealplate was previously removed. Carefully place the sealplate directly over the shaft, and attach it to the bearing housing with its hardware. Next, lubricate the seal plate O-ring with light grease, and install it on the seal plate.

2. Stretch the O-ring over the shaft sleeve that is provided with the mechanical seal

to prevent damage to the O-ring. Slip the shaft sleeve over the threads, sliding the O-ring off the shaft sleeve onto the shaft. After removing the shaft sleeve, continue sliding the O-ring down the shaft until it seats itself against the shaft shoulder then use light oil to lubricate the shaft sleeve O-ring.

3. To install a new seal assembly, unpack the new seal, and using the stationary

seal seat holder, lubricate the external stationary seat holder O-ring and the bore of the sealplate where the seal will be installed with light oil.

4. a. Lubricate the shaft sleeve with lightweight oil.

b. Lubricate the inside of the bellows in the rotating head assembly with lightweight oil.

5. a. Put the shaft sleeve into the seal face side of the rotating head. This is

located on the opposite side of the I.D. chamfer for the shaft sleeve O-ring.

b. Hand-press the shaft sleeve firmly into the rotating head until the sleeve is even with the rotating head seal face. Be extremely careful to avoid damaging the seal face (Figure 8).

6. a. Wipe any grease or debris from the sealing surface of both the stationary and the rotating seal faces with a clean, lint-free cloth.

b. Use 1-2 drops of light oil on one seal face, and install the shaft sleeve onto the shaft.

c. Be sure that both seal faces are fully seated and the drive notches in each face are fully engaged.

7. Press the shaft sleeve firmly through the rotating part of the mechanical seal

until the sleeve will not move forward (Figure 8).


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Should it become necessary to reuse an old seal in an emergency, separate both the stationary and rotating seal faces from the bellows retainer and the stationary seat. Be careful not to damage the seal faces. Once the seal is replaced, install and adjust the impeller/seal plate clearance (.025” to .040”).

2. Cartridge Seal Installation

1. Install the seal plate gasket if the seal plate was previously removed. Carefully place the seal plate directly over the shaft, and attach it to the bearing housing with its hardware. Next, lubricate the seal plate O-ring with light grease, and install in on the seal plate.

2. Stretch the O-ring over an appropriately sized tube to prevent damage to the O-ring. Slip the tube over the threads, sliding the O-ring off the tube onto the shaft. After removing the tube, continue sliding the O-ring down the shaft until it seats itself against the shaft shoulder then use light oil to lubricate the shaft sleeve O-ring.

3. To install a new seal assembly; unpack the new seal, and using the stationary seal seat holder lubricate the external stationary seat holder O-ring and the bore of the seal plate where the seal will be installed with light oil.

4. Lubricate the shaft sleeve with light weight oil.

5. Slide the Seal assembly onto the shaft just to the point where the stationary seat O-ring engages the seal plate bore.

6. Install the impeller shims and screw the impeller onto the shaft until it seats against the seal.

7. Continue to screw the impeller onto the shaft until the stationary seat is fully seated in the seal plate. The seal spring will compress and the shaft sleeve will break the shear pins. This will allow the sleeve to slide down the shaft until fully seated against the shaft shoulder.

NOTE: Firm resistance will be felt as the stationary seat is pressed into the seal plate bore.

Should it become necessary to reuse an old seal in an emergency, separate both the stationary and rotating seal faces from the bellows retainer and stationary seat. Be careful not to damage the seal faces. Once the seal is replaced, install and adjust the impeller/seal plate clearance (.025” to .040”).


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K. INSTALLING & ADJUSTING THE IMPELLER

Prior to installation, thoroughly clean and inspect the impeller. Begin by installing the complete set of impeller shims that come with the seal. Screw the impeller onto the shaft making sure it seats against the shaft sleeve. Check to be sure the impeller is hand-tight and fully connected to the shaft sleeve.

NOTE: Should there be the slightest sign of binding, immediately take the impeller

off, and inspect the threads for dirt. Never force the impeller onto the shaft.

To obtain a clearance of .025 to .040 of an inch for optimal pump efficiency, measure the clearance between the impeller and the sealplate. Remove the impeller and remove an adequate amount of adjusting shims to ensure adequate clearance is obtained. Once adequate clearances between the impeller and the sealplate are met, tighten the impeller with a lathe dog and a block of wood. Insert the impeller bolt then torque the capscrew to 90-ft. lbs.

NOTE: If the rotating assembly is left in the pump casing, the clearance may be

measured by cautiously reaching through the fill port with a feeler gauge.

WHEN REUSING AN OLD SEAL, DO NOT ATTEMPT TO SEPARATE THE ROTATING

PORTION OF THE SEAL FROM THE SHAFT SLEEVE. DURING USE THE RUBBER

BELLOWS WILL BOND TO THE SLEEVE AND ATTEMPTING TO SEPARATE THEM

WILL DAMAGE THE BELLOWS.

BEFORE REINSTALLING THE IMPELLER, COMPLETELY CLEAN THE SHAFT AND

IMPELLER THREADS. THE SMALLEST AMOUNT OF DIRT ON THE THREADS COULD

CAUSE THE IMPELLER TO SEIZE ON THE SHAFT, WHICH, IN TURN, MAKES FUTURE

REMOVAL DIFFICULT IF NOT IMPOSSIBLE WITHOUT SHAFT AND IMPELLER

DAMAGE.

Once the rotating assembly is installed in the pump casing, insert the impeller bolt and torque the capscrew to 90-ft. lbs.


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L. INSTALLING THE ROTATING ASSEMBLY

Lubricate the bearing housing O-ring with light grease then install by easing the rotating assembly into the pump casing. Use the installation tool for this procedure, being careful to avoid damaging the O-ring. Use the same rotating assembly adjusting shim thickness as those removed. Attach the rotating assembly to the pump casing with the hardware. Refer to Section IV. Part I. Installing and Adjusting the Back Cover in these instructions to accurately set impeller and wearplate clearance.

M. INSTALLING THE SUCTION CHECK VALVE

Carefully inspect the check valve assembly for wear and damage. If it is worn or damaged, replace it.

NOTE: Only replace the check valve assembly as a total unit. Parts are not sold

individually.

Enter the case through the back cover opening with the check valve. Place the check valve adaptor in the mounting slot. This is located in the suction flange. Match the adaptor to the flange hole, and attach the check valve with the check valve pin.

NOTE: If you removed the suction or discharge flanges, replace both gaskets and

attach them to the pump casing with their attaching hardware.

N. INSTALLING & ADJUSTING THE BACK COVER Center the wearplate on the back cover and attach it with its hardware if it was previously removed. To prevent binding, it is critical for the wearplate to be concentric when installing on the back cover.

You can easily adjust clearance between the wearplate and the impeller without using hand tools. The ideal clearance between the wearplate and the impeller is from .010” to .015”.


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Figure 9

Figure 10

Generously lubricate the back cover O-rings with No. 2 grease. Remove and clean all debris or scale from the pump casing contact surfaces. This could interfere with or prevent a strong seal with the back cover.

Locate and loosen the 2 hand adjusting knobs in the back coverplate until they are even with the backside, machined surface of the coverplate. Accurately position the back coverplate over the 4 studs then slide it into the pump’s casing. Use two diagonally positioned hand nuts that are opposite each other for pushing the back cover into the pump casing. Be sure the wearplate barely touches the impeller when the shaft is turned by hand then tighten the hand nuts equally to keep them from binding.


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While the wearplate is barely touching the impeller, turn the 2 hand adjusting knobs in the back coverplate until they touch the pump casing. Loosen the two hand nuts two full turns. Tighten both hand adjusting knobs evenly 1/3 turn then evenly tighten the 2 diagonally positioned hand nuts to push the back cover into the pump casing. Now, hand-turn the shaft to be sure there is no binding or interference between the impeller and the wearplate. When no binding or interference is noted, install and tighten the 2 remaining hand nuts. Should you notice friction or binding between the wearplate and the impeller, re-execute the entire adjustment process using an additional ¼ clockwise adjustment of the 2 hand adjustment knobs.

NOTE: Be sure to tighten both the hand nuts and hand adjusting knobs evenly to eliminate binding.

The adjustment procedure may need to be repeated from time to time in order to remedy the standard sear between the wearplate and the impeller. When this occurs and all available adjustment on the back cover side of the pump has been used, you may make an additional 0.125-inch adjustment by removing the adjusting shims on the rotating assembly. The installed pump must be totally cooled down prior to draining liquid from the pump casing. Once cool, remove the back cover and the adjusting shims from the rotating assembly. When this is complete, reinstall the attaching hardware for the rotating assembly to the pump casing, and complete the back cover adjustment procedure noted above to obtain adequate face clearance.

V. MAINTAINING THE PRESSURE RELIEF VALVE

A pressure relief valve is provided for additional safety to the pump and its operator. It is located on the pump casing (Refer to Liquid Temperature & Overheating in Section IX. OPERATION, Part C. 4 of the instructions). WSP™ recommends replacing the pressure relief valve assembly during every scheduled major maintenance operation or any time the pump overheats, causing the valve to activate. Never replace the pressure relief valve with a non-approved substitute. It must be an approved replacement unit from Weir Specialty Pumps. Remove, inspect and clean the pressure relief valve regularly. When the inspection and cleaning are completed. apply Loctite Pipe Sealant with Teflon No. 592 or an equivalent product on the relief valve threads before reinstalling in the pump.


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A. Final Pump Assembly

Install the shaft key and any protective guards used over the rotating parts before reconnecting the pump to its power source.




After making sure all piping connections are snug, adequately supported and secure, install both the suction and discharge lines then proceed to open all the valves. Prior to turning on the pump and power source, check to make sure both have adequate lubrication to eliminate the danger of friction (see Section VI. LUBRICATION, below). Finally, take off the fill cover assembly, and pour clean liquid into the pump casing. Reinstall and firmly secure the fill cover. Refer to Section IX. OPERATION, Part C. Operation), before initiating pump service.

VI. LUBRICATION

A. Seal Cavity

Take out the vented plug before starting the pump. Use SAE No. 30 oil in the seal cavity, and fill it to the middle of the sight gauge. For maximum performance, be sure to keep the oil level in the middle of the gauge at all times. When adequate lubrication is achieved, clean and reinstall the vented plug in the seal cavity.

B. Bearing Cavity

Before it was shipped from the factory, the bearing housing was completely lubricated with Mobil Delvac 12-30 oil. Be sure to inspect the oil level regularly to keep it in the middle of the gauge. Remove the air vent and add non detergent SAE No. 30 oil through the air-vent hole when more oil is needed. Be careful to avoid over-filling the oil in the bearing cavity since it may cause the bearings to overheat. Overheating causes premature bearing failure and makes early replacement necessary.


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REGULARLY OBSERVE THE CONDITION OF THE BEARING LUBRICANT FOR SIGNS

OF RUST OR MOISTURE, ESPECIALLY IN AREAS WHERE VARYING HOT AND COLD

TEMPERATURES ARE TYPICAL.

When operating the pump during cold weather, contact a lubricant supplier or the factory for the recommended oil viscosity.

C. Power Source Contact your local power source representative, or refer to the documentation

supplied with your power source for power requirements and recommendations.

VII. TROUBLESHOOTING

Adhere to all documented SAFETY procedures and follow safety information on all labels, decals and tags affixed to the pump before any attempts to open or maintain your WSP™ Self-Primer pump.



IN THIS MANUAL.




LOCKOUT AND KEY.



SERVICE THE PUMP.





7. DRAIN THE PUMP.


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TROUBLESHOOTING WSP™ SELF-PRIMER PUMPS

PUMP FAILS TO PRIME

POSSIBLE CAUSE PROBABLE REMEDY

Low liquid level inside the pump casing. Add liquid to casing. See Section IV. OPERATION, Part A.. PRIMING

Suction check valve malfunction. Clean or replace check valve.

Air leaking into suction line. Correct leak.

Internal lining of suction hose separation. Replace suction hose.

Leaking or worn seal or pump gasket. Check pump vacuum. Replace leaking or worn seal or gasket.

Discharge head too high. Check piping installation and install bypass line if needed. See Section III. INSTALLATION.

Strainer plugged or blocked. Check strainer and clean if necessary.

PUMP STOPS OR FAILS TO DELIVER RATED FLOW OR PRESSURE


Air leaking into suction line. Correct leak.

Internal lining of suction hose separation. Replace suction hose.

Leaking or worn seal or pump gasket. Check pump vacuum. Replace leaking or worn seal or gasket.

Strainer plugged or blocked. Check strainer and clean if necessary.

Suction intake vortexing. Check installation and correct submergence as needed.

Impeller/wearplate worn or damaged. Replace worn or damaged parts. Check that impeller is properly centered and rotates freely.

Impeller plugged or blocked. Free impeller of debris.

Pump speed not running fast enough. Check driver output; check belts or couplings for slippage.

Discharge pressure too high. Install bypass line.

Suction lift too high. Measure lift w/ vacuum gauge. Reduce lift and/or friction losses in suction line.


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PUMP REQUIRES TOO MUCH POWER


Pump speed running too fast. Check driver output; check that sheaves or couplings are correctly sized.

Discharge head too low. Adjust discharge valve.

Liquid is to viscous. Dilute if possible.

Bearing(s) seized. Disassemble pump and check bearing(s).

PUMP CLOGS FREQUENTLY


Liquid is to viscous. Dilute if possible.

Discharge flow is too slow. Open discharge valve fully to increase flow rate, and run power source at maximum governed speed.

Suction check valve or foot valve clogged or binding.

Clean valve.

EXCESSIVE NOISE


Pump cavitating Reduce suction lift and/or friction losses in suction line. Record vacuum and pressure gauge readings, and consult local representative or factory.

Pump is sucking air. Locate and eliminate source of air bubble.

Pump or drive not mounted securely. Secure mounting hardware.

Impeller plugged, blocked, or damaged. Clean out debris and replace damaged parts.

BEARINGS RUN TOO HOT


Bearing temperature is rising above normal. Check bearing temperature regularly to monitor any increase.

Low or incorrect lubricant. Check for proper type and level of lubricant.

Suction and discharge lines not properly supported.

Check piping installation for proper support.

Drive not properly aligned. Align drive properly.


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VIII. INSTALLATION

Carefully review all previous warnings before attempting to install your WSP™ Self-Primer (WSP) Pump. This will maximize safety for both equipment and operator. Weir Specialty Pumps requires the general recommendations and practices that follow are used when inspecting, positioning and arranging both the pump and the attached piping. A majority of the information is applicable to standard, static lift applications. In these applications, the pump is located above the level of liquid or slurry to be pumped. When the WSP™ Self-Primer (WSP) Pump is installed in a flooded suction application, the liquid or slurry entering the pump is being forced in under pressure. For each individual application, information on the mounting, line configuration and priming needs to be adapted to ensure maximum performance. and pump efficiency Be aware the pressure supplied to each pump is critical to equipment performance and operator safety; so be careful to limit the pump pressure to no more than 50% of the maximum operating pressure allowed. This information is located in the Pump Performance Curve graph located in Section X of this instruction manual. Please contact your local WSP™ distributor or the factory if you need additional help.

A. PUMP DIMENSIONS

For the physical dimensions of your WSP™ Self-Primer (WSP) Pump, see Section X of this instruction manual.

B. INSPECTION PRIOR TO INSTALLATION

To ensure satisfaction and peak performance, your WSP™ pump assembly received a thorough inspection and testing before being shipped from the factory. Re-inspect the pump for any shipment damage before installing. The following checklist will assist you in your preliminary inspection:

1. Are there cracks, dents, damaged threads and any other visible damage to the pump?

2. Is there any loose hardware at the mating surfaces from gaskets that

may have shrunk? Is there any other loose attaching hardware that needs to be tightened?

3. Have you followed all steps noted in the warnings in this manual or

those affixed to the pumps?


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4. Have you paid extra attention to the direction of rotation indicated on your pump? Are you sure the pump shaft rotates counter-clockwise when facing the impeller?

THIS PUMP SHOULD ONLY BE OPERATED IN THE DIRECTION SHOWN ON THE

ARROW ON THE PUMP BODY AND ON ANY ACCOMPANYING DECALS.

5. Have you determined the lubricant levels and lubricated it they are

low? Have you followed all the steps in Section VI, LUBRICATION?

6. Have you stored the pump or its power source for more than 12-months? If so, did you check to be sure the components or lubricants have not exceeded their maximum life span? If they have, you must replace them to maintain your pump’s service life.

When you complete this inspection, anything that does not appear to be normal requires you to contact your local WSP™ distributor or the factory for repair or the updating policy. If you determine the life span of either the pump or its power source has been exceeded, contact your local WSP™ distributor or the factory for repair or the updating policy. If the pump fails inspection, do not put it into service until you have resolved any problems.

C. PUMP POSITIONING

1. Lifting Inspect the shipping tag on your pump unit’s packing for accurate weight to be sure the lifting equipment you use will have adequate capacity. Pump weights will differ depending on the type of drive and mounting used. Before lifting existing units, drain and remove all currently installed equipment on the pump. This includes all discharge and suction hoses and any piping currently in place.

SERIOUS DAMAGE COULD OCCUR TO THE PUMP ASSEMBLY IF BOTH LIFTING EYES

ARE NOT UTILIZED DURING LIFTING AND MOVEMENT OF THE UNIT. ONLY LIFT THE

PUMP WITH THE LIFTING EYES.


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2. Mounting It is critical that you make sure the pump mounting is level for correct operation of your WSP™ Self-Primer pump. During installation, the pump may need to be shimmed or supported to eliminate vibration and create level operating conditions. Be sure to place the pump in an accessible area that is as close as possible to the liquid or slurry being pumped.

3. Clearance

Weir Specialty Pumps recommends at least 18-inches of clearance at the front of the pump’s rear cover to allow easier removal. This also facilitates access to the pump’s interior. Minimum clearance may be no less than 10.5-inches to allow the rear cover to be removed easily.

D. SUCTION AND DISCHARGE PIPING

Discharge elevation increased suction lift and friction losses will negatively affect pump operation. To avoid a reduction in pump performance, follow the operating range noted in the Pump Performance Curve diagram located in Section X of this instruction manual. This will ensure your pump will operate within a safe operating range and maximize its performance.

1. Materials You may use hose or pipe for the discharge and suction lines. Be sure the hose or pipe materials are appropriate for the type of liquids being pumped. When using a hose for suction, you must select the kind with reinforced, rigid-wall construction to avoid hose collapse under suction pressure. When using suction lines, do not use piping couplings as connectors.

2. Configuring the Line Lines used for suction and discharge must be kept straight to reduce friction losses. Using elbows and fittings substantially increases friction loss. When elbows are a necessity, use the kind with a long-radius to reduce friction loss.


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3. Pump Connections Accurately align the connecting flange with the pump port before it is tightened. To prevent problems, avoid pulling the pipeline into alignment by tightening the flange bolts and/or couplings. All lines surrounding the pump must be supported independently to alleviate strain on the pump. Without adequate support, the lines may cause heavy vibration, excessive seal and shaft wear, and reduce the life of the bearings. When using hose lines, you must have adequate support to ensure their reliability and operator safety when filled with pressurized liquid.

4. Gauges A majority of pumps are pre-drilled and tapped for installation of suction vacuum and discharge pressure gauges. When adding gauges to pumps without tapping, drill and tap both suction and discharge lines to a minimum of 18-inches (457 mm) away from their respective ports. Once this is done, install the lines. Avoid installing gauges any closer to the pump, since closer installation may result in incorrect readings.

E. SUCTION LINES

Be sure the suction line is both short and direct to eliminate air pockets. Air pockets may adversely affect pump priming. Operation requiring suction lift from the source liquid being pumped must have a line that slopes upward to the pump. Should the line slope downward anywhere along the suction run, air pockets reducing performance will occur.

1. Fittings

The pump inlet requires that suction lines are the same size as the pump inlet. Should reducers be necessary, they must be the eccentric type of reducers. Install eccentric reducers with the flat part uppermost. This eliminates air pockets. Valves are rarely used in suction lines; however, if a valve is needed, it should be installed with the stem horizontal. This eliminates air pockets that reduce performance.

2. Strainers

Be sure to use any strainer included with your pump since spherical solids passing through the strainer will also move through the pump. When no strainer is included, but you opt to install one, be sure the complete area of the strainer openings is 3 to 4 times the suction line’s cross-section.


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Also be sure the openings will not allow solids to pass that are larger than the pump’s ability to handle. Your WSP3 pump is designed to facilitate spherical solids up to 2½-inches (50.08 mm) in diameter. Both the WSP4 and the larger pumps are designed to handle up to 3-inch (76.2 mm) diameter spherical solids.

3. Sealing Priming, head, and capacity will all be affected by any leak no matter how small. This is especially true when using applications with a high suction lift. To avoid leaks, all suction line connections must be sealed with pipe dope. This will ensure a seal that is airtight and help maintain pump performance. When selecting and applying pipe dope, follow the sealing manufacturer’s recommendations. Be sure the sealant is appropriate for the liquid being pumped.

4. Suction Lines in Sumps When installing a single suction line in a sump, keep it away from the wall of the sump and at a length equal to 1½ times the diameter of the suction line. Any liquid flowing into the sump from an unclosed pipe must be at a distance from the suction inlet to avoid air intake into the sump. Air in the suction line causes a reduction in pump performance. When necessary for inflow from an open pipe to be close to the suction inlet, a baffle must be installed between the inflow and suction inlet. Be sure the baffle is at a length that is 1½ times the suction pipe’s diameter. This permits trapped air to be vented prior to any liquid being pulled into the suction inlet. If possible, avoid installing two suction lines to a single sump. This causes the paths of the flow to intersect and impacts performance of the pumps. Eliminate this possibility by spacing the suction inlets apart from each other. Keep the length at least 3 times the suction pipe’s diameter.


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5. Suction Line Positioning

Depth of the submerged suction line is extremely important to ensure ongoing pump performance. Refer to Figure 11 and Figure 12 showing the suggested minimum submergence vs. velocity chart.

NOTE: Reduce pipe submergence requirements at the end of the suction line

by installing a standard pipe increaser fitting. Increased size of the opening will slow velocity at the inlet. Calculate adequate submergence using the formula below. The formula is based on the enlarged opening size/ area of the diameter.

Figure 11


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Figure 12

F. DISCHARGE LINES

1. Siphoning

Avoid ending the discharge line lower than the liquid being pumped unless a siphon breaker is in use. Without a siphon breaker installed, siphoning may damage the pump.

2. Valves

When using a discharge line throttling valve, it must be the same size as the largest pipe to reduce friction loss. Do not install a throttling value in the suction line. If using high discharge heads, Weir Specialty Pumps suggests a throttling valve coupled with a system check valve in the discharge line. When the pump is stopped, this helps ensure the pump is safe from reverse rotation and extreme shock pressure.


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3. Bypass Lines

When priming, air from the suction line must be vented on the discharge side to the outside since self-priming pumps are not air compressors. Should the discharge line be open, this air will vent through the discharge.

When a discharge line check valve is installed, the pump discharge side must be open to outside pressure. The discharge may either be through a bypass line or through a WSP™ ARV that has been installed between the pump discharge and the check valves. Self-priming centrifugal pumps cannot prime when there is enough interior liquid pressing against the discharge check valve to keep it closed.

NOTE: Any bypass line must be correctly sized to avoid compromising the pump’s

discharge capacity. A bypass line must have a minimum diameter of 1 inch to reduce chances of plugging.

During low discharge head applications under 30-feet or 9-meters, Weir

Specialty Pumps advises a bypass line running back to the wet-well. Place the bypass line at the cut-off point of the low-level pump or 6 inches below the level of the water.

Occasionally, installations of the bypass line will end with a 6 to 8 foot length

of 1½-inch I.D. smooth-bore hose. In these cases, any air and liquid that is vented during priming will vibrate the hose, breaking up remaining solids, grease or other materials residing in the line. This reduces clogging.

BYPASS LINES MUST BE SECURED AGAINST BEING DRAWN INTO THE PUMP

SUCTION INLET WHEN RETURNED TO A WET WELL.

Weir Specialty Pumps advises the installation of pipe unions in a bypass line

at every 90º elbow to facilitate disassembling the parts for maintenance and repair.

If the pump is used on high discharge head applications extending more than

30 feet under full working pressure, a larger volume of liquid may be


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bypassed back to the wet-well. Such an occurrence will reduce the pumps performance. To avoid this, Weir Specialty Pumps advises installing a WSP™ ARV (WSP™ Automatic Air Release Valve) in the bypass line.

WSP™ ARVs offer low maintenance and high levels of dependability. For

more information, see the WSP™ ARV in this section for information on its operation and installation. Contact your local WSP™ distributor or the factory to select a WSP™ ARV that fits your application.

When installation of a WSP™ Self-Primer (WSP) Pump involves submerged

suction such as those in underground applications, Weir Specialty Pumps advises installing a pipe union and manual shut-off valve in the bleed line. This allows service staff to maintain the valve without being required to shut down the station. This also minimizes any chance of flooding. A full opening, ball-type valve that prevents solids from plugging the line must be used in applications where a manual shut-off valve is located anywhere in the air release piping.

FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN SEVERE INJURY.

WHEN A MANUAL SHUT-OFF VALVE IS INSTALLED IN A BYPASS LINE, IT MUST

REMAIN OPEN DURING OPERATION. CLOSING THE MANUAL SHUT-OFF VALVE

COULD CAUSE A PUMP, WHICH HAS LOST PRIME, TO CONTINUE TO OPERATE

WITHOUT REACHING PRIME. THIS COULD CAUSE DANGEROUS OVERHEATING OF

THE PUMP AND POSSIBLY RUPTURE THE PUMP CASING.

BEFORE SERVICING, ALLOW SUFFICIENT TIME FOR THE OVERHEATED PUMP TO






TEMPERATURES AND PRESSURE INSIDE THE PUMP CAN CAUSE PARTS TO BE

EXPELLED VIOLENTLY.

G. WSP™ AUTOMATIC AIR RELEASE VALVE (WSP™ ARV)

The WSP™ ARV allows air release through the bypass line. If the WSP™ ARV is installed and set correctly to the appropriate hydraulic operating specifications for your application, the WSP™ ARV then closes automatically when the pump is completely primed and operating at full capacity.


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Part Number ARV Minimum Required Pressure

0730059-3 6 psi

0730059-4 10 psi

0730059-5 24 psi

NOTE: ARV pressure is based on the gauge pressure seen at discharge of pump.

1. Theory of Operation

See Figures 13 and 14 for a cross-sectional view of the WSP™ ARV and a description of its operation.

Figure 13: Valve in Open Position

Figure 14: Valve in Partially Closed Position

Air from the pump casing passes through the bypass line and the air release valve to the wet-well during the priming cycle. (Figure 14).


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Figure 15: Valve in Closed Position

Once your pump is fully primed, pressure from the liquid pressing against the valve diaphragm compresses the spring and shuts the valve (Figure 15). The valve then stays closed, slowing the liquid bypass down to 1 to 4 gallons (3.8 to 19-liters) per minute.

ENSURE THAT THE BYPASS LINE IS DIRECTED BACK INTO THE WET-WELL OR TANK

TO PREVENT HAZARDOUS SPILLS AS SOME LEAKING (1 TO 5 GALLONS [3.8 TO 19

LITERS] PER MINUTE) WILL OCCUR WHEN THE VALVE IS IN THE FULL-CLOSED

POSITION.

The spring will automatically return the diaphragm to its open position once the pump shuts down. Solids remaining in the chamber of the diaphragm will settle at the bottom. During the next priming cycle, these leftover solids will be flushed out. NOTE: Should the pump not achieve adequate pressure levels for its designed

capacity or head, the valve will stay open. Adequate pressure to close the valve depends on the discharge head of the pump working at full capacity. The valve’s range of closing pressure is determined by the spring’s tension rate when it is ordered from the factory.

Adjust valve closing pressure to the correct system application requirements

by moving the spring retaining pin up or down the plunger rod. This will increase or decrease tension on the spring.


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Contact your local WSP™ distributor or the factory for information regarding a WSP™ ARV (automatic release valve) for many applications.

2. WSP™ Air Release Valve Installation Independently mount the WSP™ ARV horizontally, and connect it to the self-priming pump discharge line. (Figure 16).

NOTE: Contact the factory for specific installation instructions if the WSP™ ARV is

being installed on a staged pump application.

Figure 16: Installation of Air Release Valve

Always install the valve inlet line between the pump discharge port and the discharge check valve on the non-pressurized side. The valve inlet opening has 1-inch standard NPT pipe threads. It is located at the large end of the valve body. The valve outlet opening is at the opposite (small) end of the valve body. It also has 1-inch standard NPT pipe threads. A bleed line that drops back to the wet-well or sump must be connected to the valve outlet. It is imperative that the bleed line is the same size or larger than the inlet piping. When possible, do not use elbows in a bleed line made of piping.

NOTE: Every WSP™ ARV should be modified to accommodate an independent

bleeder line that can slope backward toward a sump or the wet-well (Figure 17). When more than one WSP™ ARV is installed in a system, each valve must be fitted with an independent bleeder line. Never use a common manifold pipe. Contact your local WSP™ distributor or the factory for information about WSP™ ARV installation for individual applications.


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Figure 17

H. ALIGNMENT

To maximize mechanical operation of your WSP™ Self-Primer Pump be sure to correctly align your pump and its power source. This is crucial to maintain high levels of performance. It is essential that both drive and pump in the V-belt driven and the flexible coupling systems are mounted to allow their shafts to be in alignment and parallel to each other. Prior to commencing operation, the operator or service staff must inspect for correct alignment once the pump and piping have been installed.

NOTE: Check Section IX OPERATION, Part B. Start-Up for Rotation prior to final

pump alignment. Both drive and pump are aligned prior to being shipped when the Weir Self-Primer Pump is mounted at the factory, During shipping and handling, the pump and drive may lose the factory alignment. Therefore, it is vital that both drive and pump be inspected and realigned before they are put into use. Tighten the foundation bolts and be sure the pump casing feet and/or pedestal feet and the driver mounting bolts are tightly secured before checking the alignment.


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WHEN CHECKING ALIGNMENT YOU MUST FIRST DISCONNECT THE POWER

SOURCE.

ALIGNMENT ADJUSTMENT IN ONE DIRECTION MAY DISRUPT ALIGNMENT

ADJUSTMENT IN ANOTHER DIRECTION. CHECK EACH PROCEDURE AFTER

ALTERING ALIGNMENT.

1. Coupled Drives

The axis of the power source and the axis of the pump shaft must be aligned in both the vertical and horizontal planes when using couplings. Consult the coupling manufacturer’s service documentation for specific clearance or gap requirements between the driven and driving shafts.

2. Spider Insert-type Couplings Use calipers to measure dimensions on the circumference of the outer ends of the coupling hub every 90º when aligning spider insert-type couplings. The coupling is only in perfect alignment when hub ends are spaced evenly at all points (Figure 18).

Figure 18

3. Non-Spider Type Couplings

Use a feeler or taper gauge between coupling halves every 90º to align non-spider type couplings. The coupling is only in perfect alignment when hubs are equidistant to each other at every point. (Refer to manufacturers instructions).

Ensure the coupling adjustment is parallel by laying a straightedge across the top of both coupling rims, along the side and the bottom. The coupling is in


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an accurate horizontal parallel alignment when the straightedge lies evenly on both halves of the coupling. When the coupling is incorrectly aligned, use a feeler gauge between the coupling and the straightedge to measure the amount of skew in the alignment. Realign the coupling according to the coupling manufacturer’s specification.

4. V-Belt Drives

Both the power source and the pump must be parallel when using V-belt drives. A straightedge placed along the pulleys’ sides will help determine the correct alignment of the pulleys (Figure 19). Be sure the belts are matched in drive systems using two or more belts. Mismatched belts will cause wear and a shorter belt life.

Figure 19

Always tighten drive belts to the belt manufacturer’s specifications. Belts will slip if they are too loose, and there will be excessive power loss and potential bearing failure if they are too tight, Excessive pump speed may harm both the pump and its power source so always use pulleys that correspond to the correct speed ratio.





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IX. OPERATION

Review all SAFETY information in Section II before operating a WSP™ Self-Primer pump. Follow instructions on all tags, labels and decals affixed to your pump before using.

YOUR PUMP HAS BEEN ENGINEERED TO PUMP LIQUIDS THAT CONTAIN SOLIDS OR

SLURRIES. AT NO TIME SHOULD THE LIQUID BE UNSTABLE, CORROSIVE, OR

COMBUSTIBLE. FAILURE TO DO SO WOULD DAMAGE THE PUMP OR RESULT IN

INJURY.

PUMP PERFORMANCE INCLUDING SPEED AND OPERATING CONDITIONS ARE

REQUIRED TO BE WITHIN THE RANGE SHOWN ON THE MANUFACTURER’S PUMP

PERFORMANCE CURVE.

A. PRIMING

Both pump and piping must be installed as required in Section VIII, INSTALLATION. Be sure the pump is firmly mounted and all pipe connections are airtight. Inspect pump lubrication as instructed in Section VI, LUBRICATION. Your WSP™ pump is self-priming but must always have liquid in the pump casing when in use.

THIS PUMP SHOULD ALWAYS BE OPERATED WITH LIQUID IN THE PUMP CASING.

WHEN OPERATING THE PUMP DRY, THE PUMP WILL NOT PRIME.

Increase liquid in the pump casing under the following conditions: 1. When your pump is going to be operating for the first time. 2. When the pump has been dormant for long period of time. 3. Whenever there is no liquid in the pump casing.


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The pump will continue to prime itself once the pump casing has adequate liquid.

AFTER THE PUMP CASING HAS BEEN FILLED, REINSTALL AND TIGHTEN THE FILL

PLUG. FAILURE TO OPERATE THE PUMP WITHOUT ALL CONNECTION PIPING

SECURELY INSTALLED COULD CAUSE LIQUID IN THE PUMP TO BE FORCED OUT

UNDER PRESSURE AND MAY RESULT IN INJURY.

When filling your pump, take off the fill cover on the pump casing or pull the fill plug at the case top. Fill the casing with clean liquid until full. Be sure to replace the fill cover or plug before the pump is used.

B. START-UP

Follow instructions in the Operation Manual that came with the power source.

1. Rotation When facing the impeller, the pump’s proper rotation direction is counterclockwise. Incorrect pump rotation may harm the pump and seriously impact performance. Be sure to inspect the power source direction of rotation prior to using other troubleshooting procedures if your pump’s performance is not within the manufacturer’s specified limits (See Pump Performance Curve in Section X). When an electric motor is running the WSP™ Self-primer pump, remember to remove the V-belts and couplings. If the V-belts and couplings are not removed, you must disconnect the pump from the motor and only then check the motor’s rotation. Be sure to watch the direction of the motor shaft or the cooling fan while the motor is operating. Use a qualified electrician to swap out any two of the 3-phase wires to alter the direction of rotation when the rotation on a 3-phase motor is incorrect. Review the documentation that came with the motor for particular instructions from the manufacturer when a single-phase motor rotation is incorrect.

C. OPERATION

1. Lines with a Bypass


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The valve will automatically open to allow pump priming and automatically close once priming is finished when a WSP™ ARV is installed. See Section VIII, INSTALLATION, Part G, WSP™ ARV Theory of Operation. If open, the bypass line will allow air from the suction line to be released back to the wet-well during priming; then, as long as the pump is operating, fluid will continue to circulate through the bypass line.

2. Lines Without a Bypass

Turn on the power and open all discharge line valves. Quiet operation or a positive reading on the discharge pressure gauge indicates the pump is priming. Until the suction line is filled, there may be a delay in pump priming. If the pump does not prime within 5-minutes, stop it and check the suction line for leaks. When priming is completed, partly close the discharge line-throttling valve to avoid unexpected shock pressure to the pump when the line fills. With the discharge line-throttling valve partly closed, the line will fill slowly. Unexpected shock pressure to the pump could compromise the pipe ends, the gaskets, the sprinkler heads and any other fixtures attached to the line.

Adjust the throttling valve to the mandatory flow rate once the discharge line is filled to capacity.





INJURY.

3. Leaking

There should be no visible leaks seen in any of the following locations: 1. pump mating surfaces; 2. pump connections; or 3. any fittings. Keep the pump operating at maximum efficiency by regularly checking to ensure all the line connections and fittings are firmly secured.

4. Liquid Temperature and Overheating

The highest liquid temperature for the WSP™ Self-primer pump is 180º F (83º C). Never operate your pump at a higher temperature without contacting the factory for guidance.


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If the pump is operated with the valves in the suction or discharge lines closed, the pump is likely to overheat. Closed valve operation may cause the liquid to boil resulting in intense internal pressure that may either rupture the pump or cause it to explode. Should the pump overheat, stop the pump immediately. Once it has cooled sufficiently, the pump may be serviced and refilled with cool liquid.

BEFORE SERVICING, ALLOW SUFFICIENT TIME FOR AN OVERHEATED PUMP TO






TEMPERATURES AND VAPOR PRESSURE INSIDE THE PUMP CAN CAUSE PARTS TO

BE EXPELLED VIOLENTLY.

WSP™ Self-primer pump is protected by a pressure relief valve that opens if the pressure within the pump casing reaches a critical point. This provides a measure of safety against possible rupture or explosion from excessive heat. You must stop the pump immediately and allow it to cool before servicing if the liquid temperature reaches dangerous levels. Use great caution when nearing any overheated pump. Weir Specialty Pumps advises replacing the pressure relief valve assembly during each maintenance check or any time the pump casing overheats and triggers the valve to release pressure. The pressure relief valve may only be replaced with an original manufacturer’s pressure relief valve provided by Weir Specialty Pumps. Do not use a substitute.

5. Strainer Check

When a suction strainer is included with the pump, or the user has installed a strainer, inspect and clean the strainer on a regular basis. Also, if the rate of the pump flow slows significantly, and if a vacuum suction gauge has been installed, check the strainer for clogging. Regularly watch and record the readings to determine when there is clogging in the strainer. Never attempt to remove clogging in the strainer by forcing steam pressure or air into either the pump casing or the attached piping. Such an attempt may cause damage to the pump and piping and/or result in injury to the operator. Should pump performance require back-flushing, do not allow the pressure of the liquid to exceed 50% of the highest operating pressure allowed in the pump performance curve.

6. Checking the Pump Vacuum


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To safely install a vacuum gauge in the system, first disconnect the pump. Use pipe dope on the threads of a vacuum gauge when installing, and block the suction line before starting the pump. The pump should create a minimum vacuum of 20-inches (508 mm) of mercury when fully operational. If there is not enough suction, the pump is not pulling adequately. Inspect for possible air leaks. These may be found in the gasket, the discharge valve or the seal. When the pump is primed, open the suction line and read the vacuum gauge with the pump operating at normal speed then shut off the pump. When the pump is off, the reading on the vacuum gauge should lower rapidly to static suction lift then quickly stabilize. Verify that the gauge connection is properly sealed before inspecting the pump vacuum gauge to determine the location of any leaks.

D. STOPPING

Severe tremors that jolt the pump and piping can severely impair or damage the equipment when fluids being pumped are suddenly stopped. To avoid costly repairs or replacement of the equipment, slowly shut all the connecting valves. When using an engine to drive the pumps, slow the throttle speed gradually then permit the engine to idle for a few minutes before completing the shutdown.



Once the pump is stopped, either disconnect or block the power source to be sure the pump will stay dormant during inspection, maintenance or repair.





INJURY.

1. PRESERVING THE PUMP IN COLD WEATHER

a. Protect the pump from freezing in temperatures under 32°F (0°C) by

completely draining it and using a hose to flush out remaining solids. Once


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remaining solids are flushed out, turn the pump on for 1-minute to expel any leftover fluid that might freeze and damage rotating parts in the pump.

b. Drain and rinse the pump with clean water when it has been sitting for longer than several hours. Also, drain and rinse the pump with clean water when there have been a significant quantity of solids in the fluid being pumped.

c. Insert a strong wire or rod into the drain port, and briskly stir the fluid while it

is draining. This will stop bulky solids from blocking the drain port causing liquid to remain in the pump. Flush the pump with clean water to remove leftover solids.

E. CHECKING THE BEARING TEMPERATURE

Friction generated heat normally causes bearings to run at higher than normal temperatures. Normal temperatures for bearings range between 160º F (71º C) and 180º F (82º C). Avoid testing bearing temperatures by hand because the measurement is inaccurate. Instead, determine the temperature of the bearings by touching a contact-type thermometer to the bearing housing then document the temperature for accurate record keeping. Bearings are nearing the point of failure when there is a sudden rise in bearing temperature. Check for adequate viscosity of the bearing lubricant and be sure it is at the appropriate level as noted in Section VI, LUBRICATION. Incorrect positioning of the shaft can cause overheating of the bearings. Too much vibration can also cause the bearings to overheat. During initial pump start-up, the bearings may seem to operate at higher than normal temperatures, however, continuing pump operation should reduce the temperatures to normal operating range.



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X. TECHNICAL DATA A. 3” WSP Curve

0

10

20

30

40

50

60

70

80

90

100

110

120

130

140

0

100

200

300

400

500

U.S. Gallons per Minute (GPM)

To

tal H

ead

(F

ee

t)

440 W. 800 S. Salt Lake City, Utah 84110Phone: (801) 359-8731 Fax: (801) 355-9303

3 X 3 WSP FAMILY CURVE

SELF-PRIMING PUMP

WSP3A

RPM

Suction: 3"

Discharge: 3"

Impeller Diameter: 8.75"

Max. Solid Sphere: 2.50"

BHP= GPM x FT x SG

3960 x Efficiency

KW= 367 x Efficiency

M 3/ HR x M x SG

Copyright

All rights reserved

FEB. 2006

Certified tests are performed using

Hydraulic Institute acceptance level B.

©

Clear Water Performance

VARIABLE

1950

1.5HP

2050

1850

1750

1650

40%

43%

1550

1450

35%

43%

1350

1250

1150

1050

Determine NPSHR prior to

using repriming table. Do not

use available suction lifts.

950

850

NPSHR @ 2150 RPMNP

SH

R (

Fe

et)

OPERATING RANGE

1HP

40%

650

750

RPM FEET

650 5

750 6

850 8

950 10

1050 13

1150 16

1250 18

1350 19

1450 20

1550 21

1650-1750 22

1850-2150 25

REPRIMING LIFTS

46%

46%

35%

15HP

10HP

7.5HP

5HP

3HP

2HP

2150

20HP


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B. 3” WSP General Arrangement Drawing


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C. 3” WSP Sectional Drawing and Parts List


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D. WSP™ Air Release Valve Drawing and Parts List


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LOW PRESSURE AIR RELIEF VALVE ASSEMBLY

ITEM DESCRIPTION PART NO. MATERIALS QTY

AIR RELIEF VALVE ASSEMBLY 0730059-3 DI/SST 1

400 VALVE BODY 0730061-008 DUCTILE IRON 1

401 VALVE COVER 0730066-008 DUCTILE IRON 1

403 INSPECTION COVER 0730068-008 DUCTILE IRON 1

404 PLUNGER SHAFT 0730069-242 316 SST 1

405 DIAPHRAM 0730062-580 NITRILE 1

406 SPRING 0730063-10 SST 1

407 SPRING ADJUSTING PIN 730069 316 SST 1

408 INNER DIAPHRAM WASHER 0730064-242 316 SST 1

409 OUTER DIAPHRAM WASHER 0730145-252 316 SST 1

410 PIPE PLUG, SQ HD V2930 SST 1

411 GREASE FITTING V1714 SST 1

412 LOCK WASHER 20939 316 SST 6

413 NUT, HEX 20970 316 SST 8

414 BOLT - HOUSING, LONG 800548 316 SST 2

415 NUT, SELF LOCKING; NYLON 12221 NYLON 1

416 O-RING, INSPECTION COVER 803167 NITRILE 1

417 O-RING, INSPECTION COVER 803168 NITRILE 1

418 OIL SEAL 803166 STD 1

419 BOLTS - END CAP 13553 316 SST 6

420 BOLTS - HOUSING, SHORT 20944 316 SST 6

421 SPRING RETAINER 0730072-151 316 SST 1

ASSEMBLY P/N’S 0730059-4 AND 0730059-5 ARE IDENTICAL TO 0730059-3

EXCEPT FOR THE FOLLOWING CHANGES

MEDIUM PRESSURE AIR RELIEF VALVE ASSEMBLY



406 SPRING 810749 SST 1

HIGH PRESSURE AIR RELIEF VALVE ASSEMBLY



405 DIAPHRAM 0730062-580 NITRILE 2

406 SPRING 810716 SST 1

Documents

Self-Priming Pumps · D. WSP™ Air Release Valve Drawing and Parts List ..... 71 . WSP™ DATA SHEET WSP™ SELF-PRIMER PUMPS WSP