Troubleshooting
Risk of electrical shock, cuts, and possible unexpected starts. Can result in electrical shock or pinching
of hands or tools. If power to pump is on when thermal overload resets, pump may start without warning. Disconnect
power before servicing pump.
Symptom
Motor will not run.
Motor runs hot and the
overload kicks off or does not
run and only hums.
Motor runs but no water is
delivered.*
* Stop pump; then
check prime before
looking for other causes.
Unscrew priming plug
and see if water is in
priming hole.
*Pump does not deliver water
to full capacity.
Possible Cause(s)
Fuse is blown or circuit breaker tripped.
Voltage is too low.
Pump during new installation did not pick up prime through:
1. Improper priming
2. Air leaks
3. Leaking foot valve.
4. Pipe size is too small.
Pump in installation already in use: has lost prime through:
1. Air leaks.
2. Water level below suction pipe inlet.
Impeller is plugged
Foot valve is stuck shut
Pipes are frozen
Foot valve and/or strainer are buried in sand or mud.
Water being pumped is lower than estimated.
Steel piping (if used) is corroded or limed, causing
excess friction.
Piping is too small in size
Pump not being supplied with enough water.
Corrective Action
DISCONNECT POWER; Replace fuse or reset circuit breaker.
Check voltage being supplied to the pump.
1. Re-prime according to instructions.
2. Check all connections on suction line, with shaving cream.
3. Replace foot valve.
4. Re-pipe using size of suction and discharge ports on pump.
1. Check all connections on suction line and shaft seal with shaving
cream.
2. Lower suction line into water and re-prime. If receding water level in
well exceeds 25' (7.6m), a deep well pump is needed.
Clean impeller.
Replace the foot valve.
Thaw pipes.
Raise the foot valve and/or strainer above bottom of water source. Clean
foot valve and strainer.
A deep well jet will may needed if the water being pumped is more
than 25' (7.6m) depth to water.
Replace with plastic pipe where possible, otherwise with new steel
pipe.
Re-pipe using size of suction and discharge ports on pump.
Add additional well points.
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