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OM-00745

80 SERIES

TROUBLESHOOTING

PAGE D - 1

TROUBLESHOOTING - SECTION D

Review all SAFETY information in Section A.

Before attempting to open or service the
pump:

1. Familiarize yourself with this man

ual.

2. Lock out or disconnect the power

source to ensure that the pump
will remain inoperative.

3. Allow the pump to completely cool

if overheated.

4. Check the temperature before

opening any covers, plates, or
plugs.

5. Close the suction and discharge

valves.

6. Vent the pump slowly and cau

tiously.

7. Drain the pump.

TROUBLE

POSSIBLE CAUSE

PROBABLE REMEDY

PUMP FAILS TO
PRIME

Suction check valve contaminated or
damaged.

Clean or replace check valve.

Air leak in suction line.

Lining of suction hose collapsed.

Correct leak.

Replace suction hose.

Leaking or worn seal or pump gasket.

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

Suction lift or discharge head too high.

Check piping installation and in
stall bypass line if needed. See

INSTALLATION

.

Strainer clogged.

Check strainer and clean if neces
sary.

Not enough liquid in casing.

Add liquid to casing. See

PRIMING

.

PUMP STOPS OR
FAILS TO DELIVER
RATED FLOW OR
PRESSURE

Air leak in suction line.

Lining of suction hose collapsed.

Correct leak.

Replace suction hose.

Leaking or worn seal or pump gasket.

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

Strainer clogged.

Check strainer and clean if neces
sary.

Suction intake not submerged at
proper level or sump too small.

Check installation and correct sub
mergence as needed.

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Содержание 80 Series

Страница 1: ...N RUPP COMPANY D MANSFIELD OHIO www grpumps com GORMAN RUPP OF CANADA LIMITED D ST THOMAS ONTARIO CANADA Printed in U S A eCopyright by the Gorman Rupp Company INSTALLATION OPERATION AND MAINTENANCE MANUAL WITH PARTS LIST 80 SERIES PUMP MODEL 81 1 2B3 B ...

Страница 2: ...erial number and e mail address required RECORD YOUR PUMP MODEL AND SERIAL NUMBER Please record your pump model and serial number in the spaces provided below Your Gorman Rupp distributor needs this information when you require parts or service Pump Model Serial Number ...

Страница 3: ...n Sumps PAGE B 3 Suction Line Positioning PAGE B 4 DISCHARGE LINES PAGE B 4 Siphoning PAGE B 4 Valves PAGE B 4 Bypass Lines PAGE B 4 ALIGNMENT PAGE B 5 Coupled Drives PAGE B 5 V Belt Drives PAGE B 6 GROUNDING PAGE B 6 OPERATION SECTION C PAGE C 1 PRIMING PAGE C 1 STARTING PAGE C 2 Rotation PAGE C 2 OPERATION PAGE C 2 Lines With a Bypass PAGE C 2 Lines Without a Bypass PAGE C 2 Leakage PAGE C 2 Liq...

Страница 4: ...Removal PAGE E 5 Impeller Removal PAGE E 5 Seal Removal and Disassembly PAGE E 5 Shaft And Bearing Removal And Disassembly PAGE E 5 Shaft And Bearing Reassembly And Installation PAGE E 6 Seal Reassembly and Installation PAGE E 7 Impeller Installation PAGE E 9 Pump Casing and Wear Plate Installation PAGE E 9 Suction Check Valve Installation PAGE E 9 Final Pump Assembly PAGE E 9 LUBRICATION PAGE E 9...

Страница 5: ...erator safety nor pump integrity are com promised by the installation Pumps and related equipment must be installed and operated ac cording to all national local and industry stan dards If there are any questions regarding the pump or its application which are not covered in this man ual or in other literature accompanying this unit please contact your Gorman Rupp distributor or write The Gorman R...

Страница 6: ... solids Only the Gorman Rupp Company or an authorized Gorman Rupp distributor may modify a pump or approve its use for handling volatile flammable liquids If the pump is used for handling volatile flammable liquids all drivers and or controls must meet industry standards and codes for use in an explosive atmo sphere Do not attempt to pump liquids for which the pump driver and or con trols have not...

Страница 7: ... valve for long periods of time If operated against a closed dis charge valve pump components will deteriorate and the liquid could come to a boil build pressure and cause the pump casing to rupture or explode Overheated pumps can cause severe burns and injuries If overheating of the pump occurs 1 Stop the pump immediately 2 Ventilate the area 3 Allow the pump to completely cool 4 Check the temper...

Страница 8: ...oded suction application where the liquid is supplied to the pump under pressure some of the information such as mounting line configuration and priming must be tailored to the specific application Since the pressure supplied to the pump is critical to performance and safety be sure to limit the incoming pressure to 50 of the maximum permissible operating pressure as shown on the pump performance ...

Страница 9: ...rs to be abnormal contact your Gorman Rupp distributor or the factory to deter mine the repair or updating policy Do not put the pump into service until appropriate action has been taken POSITIONING PUMP Use lifting and moving equipment in good repair and with adequate capacity to prevent injuries to personnel or dam age to equipment Suction and dis charge hoses and piping must be re moved from th...

Страница 10: ...t the line must always slope upward to the pump from the source of the liquid being pumped if the line slopes down to the pump at any point along the suction run air pockets will be created Fittings Suction lines should be the same size as the pump inlet If reducers are used in suction lines they should be the eccentric type and should be in stalled with the flat part of the reducers uppermost to ...

Страница 11: ...fficient pump operation Figure 2 shows recommended minimum submergence vs veloc ity NOTE The pipe submergence required may be reduced by installing a standard pipe increaser fitting at the end of the suction line The larger opening size will reduce the inlet velocity Calculate the required submergence using the following formula based on the increased opening size area or diameter Figure 2 Recomme...

Страница 12: ... Rotation Section C before final alignment of the pump When mounted at the Gorman Rupp factory driver and pump are aligned before shipment Misalign ment will occur in transit and handling Pumps must be checked and realigned before operation Before checking alignment tighten the foundation bolts The pump casing feet and or pedestal feet and the driver mounting bolts should also be tightly secured W...

Страница 13: ... PARALLEL MISALIGNED SHAFTS NOT IN LINE ALIGNED SHAFTS PARALLEL AND SHEAVES IN LINE Figure 3C Alignment of V Belt Driven Pumps Tighten the belts in accordance with the belt manu facturer s instructions If the belts are too loose they will slip if the belts are too tight there will be excessive power loss and possible bearing failure Select pulleys that will match the proper speed ra tio overspeedi...

Страница 14: ...must be within the continuous per formance range shown on the curve see Section E Page 1 PRIMING Install the pump and piping as described in IN STALLATION Make sure that the piping connec tions are tight and that the pump is securely mounted Check that the pump is properly lubri cated see LUBRICATION in MAINTENANCE AND REPAIR This pump is self priming but the pump should never be operated unless t...

Страница 15: ...will not have to prime against the weight of the liquid in the discharge line Air from the suction line will be discharged through the bypass line back to the wet well during the priming cycle When the pump is fully primed and liquid is flowing steadily from the bypass line open the discharge throttling valve Liquid will then continue to circulate through the bypass line while the pump is in opera...

Страница 16: ...he vacuum gauge reading will immediately drop proportionate to static suction lift and should then stabilize If the vacuum reading falls off rapidly after stabilization an air leak exists Before checking for the source of the leak check the point of installation of the vacuum gauge STOPPING Never halt the flow of liquid suddenly If the liquid being pumped is stopped abruptly damaging shock waves c...

Страница 17: ...gs are at the point of failing to operate properly Make certain that the bearing lubricant is of the proper viscosity and at the cor rect level see LUBRICATION in Section E Bear ing overheating can also be caused by shaft misalignment and or excessive vibration When pumps are first started the bearings may seem to run at temperatures above normal Con tinued operation should bring the temperatures ...

Страница 18: ...ve Air leak in suction line Lining of suction hose collapsed Correct leak Replace suction hose Leaking or worn seal or pump gasket Check pump vacuum Replace leaking or worn seal or gasket Suction lift or discharge head too high Check piping installation and in stall bypass line if needed See INSTALLATION Strainer clogged Check strainer and clean if neces sary Not enough liquid in casing Add liquid...

Страница 19: ...ing s frozen Disassemble pump and check bearing s Liquid solution too thick Dilute if possible Discharge flow too slow Open discharge valve fully to in crease flow rate and run power source at maximum governed speed Suction check valve or foot valve clogged or binding Clean valve EXCESSIVE NOISE Cavitation in pump Impeller clogged or damaged Pump or drive not securely mounted Pumping entrained air...

Страница 20: ...ely the same duty cycle the part can be checked and replaced before failure occurs reducing unscheduled down time For new applications a first inspection of wearing parts at 250 hours will give insight into the wear rate for your particular application Subsequent inspec tions should be performed at the intervals shown on the chart below Critical applications should be inspected more frequently Gen...

Страница 21: ...el with minimum suction lift Since pump installations are seldom identical your performance may be dif ference due to such factors as viscosity specific gravity elevation temperature and impeller trim If your pump serial number is followed by an N your pump is NOT a standard production model Contact the Gorman Rupp Company to verify per formance or part numbers Pump speed and operating condition p...

Страница 22: ...80 SERIES OM 00745 MAINTENANCE REPAIR PAGE E 2 SECTION DRAWING PARTSPAGE Figure 1 Pump Model 81 1 2B3 B ...

Страница 23: ...ALL BEARING S1085 1 17 INBOARD BALL BEARING S1085 1 18 BEARING RETAINING RING S240 1 19 HEX NUT D06 15991 4 20 STUD C0607 15991 4 21 CASING GASKET SET 504GA 20000 1 22 WEAR PLATE ASSY 2643A 15990 1 23 PUMP CASING DRAIN PLUG P08 15079 1 24 FLAT WASHER KF04 18040 1 25 HEX HD CAPSCREW B0414 15991 1 26 FLAP VALVE ASSY 1352 1 27 LOCKWASHER J04 17090 1 28 RD HD MACH SCREW X0403 17090 1 29 SMALL VALVE WE...

Страница 24: ... contact your local power source representative Before attempting to open or service the pump 1 Familiarize yourself with this man ual 2 Lock out or disconnect the power source to ensure that the pump will remain inoperative 3 Allow the pump to completely cool if overheated 4 Check the temperature before opening any covers plates or plugs 5 Close the suction and discharge valves 6 Vent the pump sl...

Страница 25: ...eller Shaft Lathe Dog Setscrew Heavy Bar Stock Figure 2 Loosening Impeller Unscrew the impeller from the shaft Use caution when removing the impeller tension on the seal spring will be released as the impeller is un screwed Inspect the impeller and replace it if cracked or badly worn Slide the impeller adjusting shims 7 off the impeller shaft Tie and tag the shims or measure and record their thick...

Страница 26: ...age on the impeller end Dress small nicks and burrs with a fine file or emery cloth Re place the shaft if defective Clean the bearings thoroughly in fresh cleaning solvent Dry the bearings with filtered compressed air and coat with light oil Bearings must be kept free of all dirt and foreign material Failure to do so will great ly shorten bearing life Do not spin dry bearings This may scratch the ...

Страница 27: ...he pedestal until the inboard bearing is fully seated against the retaining ring When installing the shaft and bearings into the bearing bore push against the outer race Never hit the balls or ball cage Install the same thickness of bearing adjusting shims 12 as previously removed Reinstall the re taining ring 15 and check shaft endplay NOTE Shaft endplay should be 002 to 010 inch 0 05 to 0 25 mm ...

Страница 28: ...T SEAL PLATE ROTATING ELEMENT RETAINER SPRING IMPELLER ADJUSTING SHIMS BELLOWS SHAFT SLEEVE O RING IMPELLER Figure 3 S33 Seal Assembly This seal is not designed for operation at temperatures above 160_F 71_C Do not use at higher operating temperatures Apply a small amount of oil to the stationary seat O ring Use thumb pressure to press the stationary seat into the seal plate 6 until fully seated U...

Страница 29: ... gaskets 21 and slide the pump casing over the impeller and against the gaskets The clearance between the face of the impeller and the wear plate should be between 008 and 015 inch 0 20 to 0 38 mm Remove gaskets from the gas ket set until the correct clearance is achieved Se cure the pump casing to the seal plate and pedes tal with the nuts 19 Suction Check Valve Installation If the check valve as...

Страница 30: ...sassembled to completely clean and maintain this cavity Under normal conditions change the grease after each 5000 hours of operation or at 12 month inter vals whichever comes first Change the grease more frequently if the pump is operated continu ously or installed in an environment where variable hot and cold temperatures are common When lubricating a dry overhauled pedestal fill the cavity with ...

Страница 31: ...For Warranty Information Please Visit www grpumps com warranty or call U S 419 755 1280 Canada 519 631 2870 International 1 419 755 1352 GORMAN RUPP PUMPS ...

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