Related Manuals for Ampco Pumps Company LF Series
Summary of Contents for Ampco Pumps Company LF Series
- Page 1 Ampco Pumps LF & LM Series Pump Instruction & Maintenance Manual LF & LM SERIES PUMPS...
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Page 2: Table Of Contents
TABLE OF CONTENTS TECHNICAL DATA ................... 3 COMPOSITE OF LH PUMP CURVES 60 Hertz....................... 4 50 Hertz....................... 5 ASSEMBLY DRAWING & PARTS LIST LF/LM 757 SEAL PUMPS ................ 6 LF/LM 758 SEAL PUMPS ................ 8 401 seal......................10 SEAL DRAWINGS & SEAL PARTS LIST LF/LM PUMP SEAL .................. -
Page 3: Technical Data
TECHNICAL DATA SPECIFICATIONS_________________________________________________ MAXIMUM INLET PRESSURE…………………………..……………150 PSI / 10.3 BAR TEMPERATURE RANGE……………………………...…...-40º F → 400º F/ -40º C → 204º C MATERIALS OF CONSTRUCTION__________________________________ Casing……….…..………………………………………………….….AISI 316L Stainless Steel Cover …..……………………………………………………..….AISI 316L Stainless Steel Impeller …….…………………………………………………..….….AISI 316L Stainless Steel Seal Driver……..……………….………...…………………..…..….AISI 316L Stainless Steel Adapter…………..…………….………..…………………..…...…….AISI 304 Stainless Steel PRODUCT CONTACT SURFACE FINISH…..……………………….……….32Ra (standard) Optional Finishes……..….…………………………...25Ra, 20Ra, 15Ra, Electro Polish... -
Page 4: Hertz
LF & LM SERIES PUMPS... -
Page 5: Hertz
LF & LM SERIES PUMPS... -
Page 6: Lf/Lm 757 Seal Pumps
EXPLODED ASSEMBLY LF/LM PUMPS: R00, R10, R20, R30, R40, R130, V520,V530 AND V540 WITH THE 757 SEAL LF & LM SERIES PUMPS... - Page 7 LF & LM SERIES PUMPS...
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Page 8: Lf/Lm 758 Seal Pumps
EXPLODED ASSEMBLY LF PUMPS: V550, X051, X151, X161 WITH THE 758 SEAL LF & LM SERIES PUMPS... - Page 9 LF & LM SERIES PUMPS...
- Page 10 EXPLODED ASSEMBLY LF 401 PUMPS: LF & LM SERIES PUMPS...
- Page 11 LF & LM SERIES PUMPS...
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Page 12: Lf/Lm Pump Seal
LF /LM 757 & 758 SEALS: 1 Rotating double spring 8 Single rotating seal o-ring 2 Rotating double seal 9 Backup ring 3 Rotating double o-ring 10 Seal spring 4 Stationary double o-ring 11 Seal driver inner o-ring 5 Stationary seal 12 Seal driver 6 Stationary seal single o-ring 13 Seal driver outer o-ring... -
Page 13: 401 Seal
LF 401 SEAL: 1 Rotating double seal driver 8 Rotating single seal 2 Rotating double spring 9 Single seal spring 3 Rotating double o-ring 10 Single seal o-ring 4 Rotating double seal 11 Seal driver 5 Stationary seal double o-ring 12 Seal driver o-ring 6 Stationary seal 13 Impeller nut o-ring... -
Page 14: Service Maintenance & Scheduling
SERVICE MAINTENANCE AND SCHEDULING DAILY PUMP MAINTENANCE CHECKS 1. Pump leakage (seal or otherwise) 2. Pressure reading and flow indication 3. Change in operating sound 4. Change in bearing temperature 5. Flow through lip seal lines Motor lubrication schedule: Every 2200Hrs of standard service. Every 1100Hrs of severe service. -
Page 15: Pump Installation
Changing the environment or system conditions (i.e. change of fluid, change in head losses, change in NPSHr) can overload the motor. When changing system conditions or when in doubt, contact Ampco Pumps Company for technical assistance and someone will be ready to assist. -
Page 16: Pump Operation And Shut Down
Pump operation: Make sure the pump is clean and free of any foreign matter. Once the motor, flush and piping all have been properly connected, the flush is turned on and is visibly flowing (if the pump has a flush option) and the pump has been flooded, the pump can be momentarily turned on to check the motor rotation. -
Page 17: Pump Diamantle And Seal Removal
PUMP DISMANTALING & SEAL REMOVAL ATTENTION! BEFORE ATTEMPTING ANY SEVICE ON ANY PUMP OR MOTOR, DISCONNECT OR LOCKOUT ELECTRICAL POWER TO THE PUMP MOTOR. IF THE PUMP AND MOTOR ARE TO BE REMOVED AS A UNIT, NOTE THE WIRING AND CONFIGURATION. USE COLORED OR NUMBERED TAPE TO MARK THE WIRE CONNECTIONS OF THE PUMP MOTOR AND POWER SOURCE, FOR RE- CONNECTION. - Page 18 5. Remove the impeller nut, the impeller nut gas- ket, impeller, then the key. This process can be seen in Figure 3. The seal driver may be pushing against the key. With one hand push the seal driver into the cas- ing with index and middle finger on opposite sides of the shaft.
- Page 19 8. Push the stationary seal out from the back of the pump using an o-ring pick or your fingers or both. Pushing on opposite sides of the shaft with constant light pressure the best. Make sure to push outside of the rear seal face. See figure 6.
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Page 20: Seal Installation And Pump Assembly
PUMP ASSEMBLY AND SEAL INSTALLATION When replacing the seal assembly lubricate all o-rings with food grade lu- bricant to ease assembly. Once the pump is fully assembled turn the stub shaft a few revolutions by hand making sure it turn relatively freely and nothing is rub- bing inside the pump. - Page 21 4. Note the square end of the station- ary seal. Insert this end in first and slide the stationary seal over the shaft and into the casing, figure 12. Figure 12 5. Line up a flat on the stationary seal to the a flat of the window of the cas- ing and gently press the stationary seal into the casing bore.
- Page 22 8. Insert key into the keyway in the stub shaft, figure 16. Figure 16 9. Replace the impeller, impeller nut and gasket, figure 17. Figure 17 10. Insert the 3/8” bar into the stub shaft, figure 18, and torque the impeller nut to 90 ft-lbs for LF X-pumps and to 40 ft-lbs for all other LF pumps.
- Page 23 Figure 19 11. Replace the cover, cover gasket and wing nuts. Once the wing nuts are tight- ened turn the stub shaft by hand a few revolutions making sure nothing is rubbing inside the pump. Running the pump with foreign objects in the pump or having the impeller making contact with either the cover or the casing will result in seri- ous damage if not completely destroying the pump.
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Page 24: Pump Dismatle And Seal Removal
401 PUMP DISMANTLING & SEAL REMOVAL ATTENTION! BEFORE ATTEMPTING ANY SEVICE ON ANY PUMP OR MOTOR, DISCONNECT OR LOCKOUT ELECTRICAL POWER TO THE PUMP MOTOR. IF THE PUMP AND MOTOR ARE TO BE REMOVED AS A UNIT, NOTE THE WIRING AND CONFIGURATION. - Page 25 5. Remove the impeller nut gasket, impeller, and the im- peller key. This process can be seen in Figure 22. Figure 6. Pull out the seal driver if it did not already come out with the impeller and the single seal spring.
- Page 26 8. Push the stationary seal out from the back of the pump using an o-ring pick or your fingers or both again make sure to push outside of the rear seal face so the seal surfaces are not damaged. Pushing on opposite sides of the shaft with constant light pres- This surface sure the best.
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Page 27: Assembly And Seal Installation
LF 401 PUMP ASSEMBLY AND SEAL INSTALLATION When replacing the seal assembly lubricate all o-rings with food grade lu- bricant to ease assembly. Once the pump is fully assembled turn the stub shaft a few revolutions by hand making sure it turns relatively freely and nothing is rub- bing inside the pump. - Page 28 3. The o-rings on the stationary seal must be lubricated well or it will be very difficult to push the stationary seal into the its’ bore. Line up the flats on the stationary seal with the rectangular hole in the hub of the casing.
- Page 29 4. Assemble single seal and driver assembly. Insert the seal driver o-ring and the single seal o-ring into the seal driver. Insert the single seal spring into the seal driver. Then press the rotat- ing single seal into the seal driver while noting that the notches in the rotating single seal line up with the seal driver pins, figure 33.
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Page 30: Setting The Impeller Clearance
SETTING THE IMPELLER CLEARANCE Assemble the pump as described in the Pump Assembly and Seal Installa- tion section of this manual. For double seals perform steps 1-10 and for single seals perform steps 4-10 of the Pump Assembly and Seal Installation instructions. Take note that the shaft collar screw must be torqued to the proper torque value as determined by the frame size of the motor. - Page 31 3. While pushing the impeller nut, impeller, and shaft collar towards the motor slightly pinching the shim, tighten the socket head cap screw in the shaft collar. Torque the socket cap screw to the right torque value that correlates to the frame size of the motor.
- Page 32 Figure 39 Figure 42 5. Replace the cover, cover gasket and cover nuts. Once the cover nuts are tight- ened turn the stub shaft by hand a few revolutions making sure nothing is rubbing inside the pump. Running the pump with foreign objects in the pump or having the impeller making contact with either the cover or the casing will result in seri- ous damage if not completely destroying the pump.
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Page 33: Sound Piping Practices
Sound piping practices Suction and discharge piping must be prop- erly supported and aligned with the pumps suction and discharge ports. Avoid throttling valves in the suction line of the system. Check valves must be at a minimum of 5 Figure 43 pipe diameters from the pump’s discharge. -
Page 34: Troubleshooting
TROUBLESHOOTING COMMON TROUBLES AND THEIR CAUSES It is to the user’s advantage to be familiar with a systematic procedure to determine reasons and causes for unsatisfactory pump operation. The following list of troubles and causes is intended to assist users in determining the cause of any pumping trouble. Faulty installations can then be corrected and clear description given the manufacturer if assistance is required. - Page 35 5. Pump takes too much power Speed too high • Pumping too much liquid because required head is lower than anticipated. • Viscosity and / or specific gravity is higher than specified • Mechanical problems—binding inside seal from distortion due to piping strains, shaft bent, •...
- Page 36 Ampco Pumps Company 2045 W. Mill Road, Glendale, WI 53209 1-800-737-6871 or (414)643-1852 Email: ampcocs@ampcopumps.com Visit www.ampcopumps.com for more information. REV. TML 7/9/10 LF & LM SERIES PUMPS...
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