REV0302COM010120
14
Troubleshooting
Symptom Troubleshooting Guide
No fuel delivery
1.
Pump does not run
2.
Pump is not primed
3.
Fuel supply line blocked
4.
Excessive lift
5.
Air leak in fuel supply to pump
6.
Pump rotation direction incorrect
7.
Intake or outlet valve closed
8.
Check valve installed backwards
Insufficient fuel delivered
1.
Air leak at inlet
2.
Defective pressure relief valve or check valve
3.
Excessive lift
4.
Pump worn
5.
Inoperative foot valve
6.
Piping improperly installed or dimensioned
7.
Primary filter/water separator plugged
Rapid pump wear
1.
Pipe strain on pump causing bind
2.
Worn pump/motor coupler
3.
Pump has been run dry or with insufficient fuel
4.
Plumbing on inlet side not appropriately
dimensioned
Alarm “HIGH VACUUM ALARM” comes on with clean
or new filter element installed
1.
Heavily contaminated fuel/excessive water in tank
2.
Restriction in plumbing on inlet side too high
3.
Excessive lift
4.
Inoperative foot valve
5.
Inlet ball valve not fully open
6.
Suction line clogged
Pump requires too much power
1.
Air in plumbing lines
2.
Liquid too viscous
3.
Bent pump shaft, binding rotor
4.
Misalignment of pump/motor coupler
Noisy operation
1.
Insufficient fuel supply
2.
Air leaks in the inlet pipe
3.
Air or gas in fuel on the suction side
4.
Pump and motor out of alignment
5.
Worn out spider coupling
6.
Pump coupler out of balance
Motor does not turn or turns intermittently
1.
Control power not available
2.
Motor thermal overload condition
3.
Pump failed and seized
4.
Motor failure
Pump leaks fuel
1.
Loose pump plumbing fittings
2.
Worn pump shaft seal
3.
Pump pressure relief valve failure
4.
Fuel leak elsewhere and fuel dripping or running
towards the pump
5.
Excessive head from overhead storage tank
6.
Worn pump O-rings or seals
Summary of Contents for FPS Compact Series
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