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0-8493-????-?/97/$0.00+$.50© 1997 by CRC Press LLC

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©1999 CRC Press LLC

Troubleshooting

“Pointers” as Givenby Interviewed PumpUsers and PlantPersonnel

• Rule Number One: “Always do the easy stuff first!”

• Always check the rotation of the pump.• Make sure relief valve setting is correct.• Check speed for belt-driven, or vari-drive, cases. Do not take them for

granted.• Check the integrity of the coupling.

• Alignment: How and who? Is piping forced to flanges?• Trace the system and make sure the valves are open and that you are

pumping from the correct vessel.• For heavy viscosities, make sure the pump is warmed up prior to starting.

• Check for high temperature on the bearing housing to detect excessive

thrust conditions. Bearings could tell you a good story.

• Inspect oil level in the bearing housing.• Check for signs of discoloration.• Inspect seals for leakage.

• Discuss changes in operating condition: New product introduction or

adjustment? Compare stories.

• Discuss changes in line-up or changes in operating performance.• Only after the above questions are resolved, consider the removal of the

pump from service.