Troubleshooting Chart - Master Plumber 633752 Manual Del Usuario

Troubleshooting

Troubleshooting Chart

Risk of electrical shock. Unplug the pump before touching it or servicing it.
SYMPTOM
Pump won't start or run.
Pump starts and stops
too often.
Pump won't shut off.
Pump operates but
delivers little or no water.
For parts or assistance, call Master Plumber Customer Service at 1-800-628-9439
PROBABLE CAUSE(S)
Pump is not plugged in.
Blown fuse.
Low line voltage.
Defective motor.
Defective float switch.
Clogged or jammed Impeller.
Obstructed float.
Backflow of water from piping.
Faulty float switch.
Defective float switch.
Restricted discharge
(obstacle or ice in the piping).
Obstructed float.
Restricted intake screen.
Low line voltage.
Debris caught in the impeller.
Worn or defective parts or
plugged impeller.
Check valve installed without
vent hole
Restricted intake screen.
Check valve is installed either
backward or upside down.
CORRECTIVE ACTION
Make sure the pump is plugged into a proper outlet.
Replace the fuse with a fuse of proper size.
Check the size of the wiring on the circuit feeding the pump
and from the main switch on the property. If everything is OK,
contact your power company or hydro authority.
Replace the pump.
Replace the float switch.
If the impeller won't turn, unplug the pump, remove the lower
pump body, and locate the source of the binding. Replace
the impeller if necessary.
Move the pump in the sump or remove the obstruction.
Install or replace the check valve.
Replace the float switch.
Replace the float switch.
Unplug the pump, remove it from the sump, and clean the
pump and piping.
Move the pump in the sump or remove the obstruction.
Unplug the pump, remove it from the sump, and clean the
intake screen and impeller.
If the voltage is below 110 volts, check the size of the wiring
from the main switch on the property. If OK, contact your
power company or hydro authority.
Remove the pump and clean out the impeller.
Clean the impeller if it's plugged; replace the impeller if
necessary; otherwise replace the pump.
Drill a 1/8" (3mm) dia. hole between the pump discharge and
the check valve (1-2" above the pump discharge and below
the waterline).
Remove the pump and clean out the intake screen.
Be sure the check valve is installed correctly (the flow arrow
should point away from the pump).
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