2
TROUBLESHOOTING
MOTOR DOES NOT START
1. Disconnect switch or circuit breaker in OFF position.
2. Fuses blown or thermal overload open.
3. Locked motor shaft.
4. Motor windings burned out.
5. Defective starting switch inside single-phase motor.
6. Disconnected or defective wiring.
7. Low voltage.
MOTOR DOES NOT REACH FULL SPEED
1. Low voltage.
2. 2 speed model set on low speed.
3. Motor windings connect for wrong voltage on dual
voltage model.
MOTOR OVERHEATS (Protector trips)
1. Low voltage.
2. Motor windings connected for wrong voltage on dual
voltage model.
3. Inadequate ventilation.
PUMP DELIVERS NO WATER
1. Pump is not primed.
2. Closed valve in suction or discharge line.
3. Leakage of air into suction line.
4. Impeller Clogged.
LOW PUMP CAPACITY
1. Valve in suction or discharge line partly closed.
2. Suction or discharge line partly plugged.
3. Suction or disharge line too small.
4. Pump running at reduced speed (see above)
5. Impeller clogged.
LOW PUMP PRESSURE
1. Pump running at reduced speed (see motor)
2. Discharge valve or inlet
fi
ttings open too wide.
HIGH PUMP PRESSURE
1. Discharge valve or inlet
fi
ttings closed too much.
2. Return lines too small.
NOISY PUMP AND MOTOR
1. Worn motor bearings.
2. Valve in suctin line partly closed.
3. Suction line partly plugged.
4. Pump not supported properly.
LEAKAGE OR WATER AT SHAFT
1. Shaft seal requires replacement.
AIR BUBBLES AT INLET FITTINGS
1. Leakage of air into suction line at connections or
valve system.
2. Restriction in suction line.
LEAKING UNIONS
1. O-ring missing or damaged.
2. Plumbing in bind.
3. Insuf
fi
cient tightening.
NOTE: If the recommendations in the Troubleshooting
portion of this manual do not solve your particular
problem(s), please contact your local dealer for
service.
