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Troubleshooting 7
Risk of electric shock . Can shock, burn or kill. Unplug pump from power receptacle
before working on pump.
Symptom
Probable Cause(s)
Corrective Action
Pump won’t start
or run.
Pump is not plugged in.
Check and see if pump is plugged in to a
proper outlet.
Blown fuse or tripped breaker.
If blown, replace with fuse of proper size. If
tripped, reset breaker.
Low line voltage.
If voltage under recommended minimum, check
size of wiring from main switch on property. If
OK, contact power company or hydro authority.
Defective motor.
Replace pump.
Defective float switch.
Replace float switch.
Impeller.
If impeller won’t turn, remove lower pump
body and locate source of binding.
Float obstructed.
Remove obstruction.
Pump starts and
stops too often.
Backflow of water from piping.
Install or replace check-valve.
Faulty float switch.
Replace float switch.
Pump won’t shut off.
Defective float switch.
Replace float switch.
Restricted discharge (obstacle or
ice in piping).
Remove pump and clean pump and piping.
Float obstructed.
Remove obstruction.
Restricted intake screen.
Remove the pump and clean the intake screen
and the impeller.
Pump operates but
delivers little or no
water.
Low line voltage.
If voltage under recommended minimum, check
size of wiring from main switch on property. If
OK, contact power company or hydro authority.
Something caught in impeller.
Remove the pump and clean out the impeller.
Worn or defective parts or
plugged impeller.
Clean impeller if plugged; otherwise replace
pump.
Vent hole plugged.
Use a nail or paperclip to open vent hole in
discharge pipe.
Restricted intake screen.
Remove the pump and clean out the intake
screen.
Check valve is installed either
backward or upside down.
Be sure check valve is installed correctly.
Summary of Contents for CLRP50
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