16
S
Y
S
TEM C
OMPONENT
S
PRIMAR
Y INSPECTION
INS
TALLA
TION
OPERA
TION
PRIMING
C
ONTR
OLLER
C
OMMISSIONING
MAINTENANCE
REV0303500011217
O
VER
VIEW
MAINTENANCE
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. 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
Vacuum gauge shows more than 15”HG:
1. Restriction on inlet side too high
2. Lift too high
3. Inoperative foot valve
4. Inlet ball valve not fully open
5. Suction line/Coalescer/Strainer/LG-X Fuel Conditioner
clogged
Pressure gauge in red area or more than 20 – 25 PSI
with clean or new filter element installed
1. Restriction on discharge side too high
2. Head (lift) on discharge side too high
3.
Check filter for water saturation (WB only)
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
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. Excessive pump load (vacuum > 15”HG)
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. Control power not available
2. Motor thermal overload condition
3. Pump failed and seized
4. Motor failure
5. Emergency Button depressed
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
