24
Lowes.com
®
PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION
Failure to pump;
reduced capacity
or discharge
pressure
Suction leaks/lost prime
Pump must be primed; make sure that pump
volute and trap are full of water. See Priming
the Pump
Make sure there are no leaks in suction piping
Make sure suction pipe inlet is well below the
water level to prevent pump from sucking air
If suction trap gasket is defective, replace it
Make sure pump is not trying to lift water more
than 10 ft. (3 m)
Make sure suction pipe is at least 1-1/2 in.
(38 mm) in diameter
Clogged pipe/trap/impeller;
worn impeller
Make sure suction trap is not clogged. If it is,
clean trap and trap basket
Make sure impeller is not clogged. Follow
instructions in Replace Existing Seal; check
impeller for clogging; follow instructions in
Install New Seal for reassembly
Impeller and diffuser may be worn. If so, order
replacement parts. See Replacement Parts List
Failure to pump;
reduced capacity
or discharge
pressure
Pump may be running too
slowly
Check voltage at motor terminals and at
meter while pump is running. If low, see wiring
instructions or consult power company. Check
for loose connections
Pump may be
too hot
Electrical issue
Check line voltage; if less than 90% or more
than 110% of rated voltage, consult a licensed
electrician
Tighten any loose electrical connections
Ambient temperature too
high
Increase ventilation
Reduce ambient temperature
TROUBLESHOOTING
Risk of electric shock. Can shock, burn or kill.
• Disconnect power before working on pump or motor.
• Read and understand safety/operating instructions in this manual before working on pump!
• Only qualied personnel should electrically test pump motor!
To Next Page
Loading...
Need help?
General
