17
S
Y
S
TEM C
OMPONENT
S
PRIMAR
Y INSPECTION
INS
TALLA
TION
OPERA
TION
PRIMING
C
ONTR
OLLER
C
OMMISSIONING
REV03121080011217
MAINTENANCE
O
VER
VIEW
Troubleshooting
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. Excessive lift
3. Pump worn
4. Inoperative foot valve
5. Piping improperly installed or dimensioned
6. Strainer plugged
Rapid pump wear
1.
Pump has been run dry or with insufficient fuel
2. 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
Alarm “HIGH PRESSURE ALARM” comes on with
clean or new filter element installed
1. Restriction in plumbing on discharge side too high
2.
Head (lift) on discharge side too high
3. Check valve stuck or defective
4. Outlet ball valve not fully open
5. Discharge line clogged
Pump requires too much power
1. Air in plumbing lines
2.
Liquid too viscous
Noisy operation
1.
Insufficient fuel supply
2. Air leaks in the inlet pipe
3. Air or gas in fuel on the suction side
Pump requires frequent re-priming
1. Inoperative foot valve
2. Inoperative check valve
3.
Inoperative solenoid valve (optional)
4. Pump cavitations
5. Plumbing air leaks
6. Lift too high
7. Leaking pump seal
Motor does not turn or turns intermittently
1. No power/power failure/low voltage or bad power
connection
2. Pump failed and seized
3. Motor failure
Pump leaks fuel
1.
Loose pump plumbing fittings
2. Worn pump shaft seal
3. Fuel leak elsewhere and fuel dripping or running
towards the pump
4. Excessive head from overhead storage tank
5. Worn pump O-rings or seals
