6
CONDITION
Circuit breaker trips.
Pump is noisy and pump rate is low.
Grease and solids have accumulated around pump
and will not pump out of basin.
PROBABLE CAUSE
1. Reset breaker by pushing completely down on handle
then back to ON position. If breaker trips again in a few
seconds it indicates excessive load probably caused
by a short in the motor or control box. Check out
instructions given with control box before pulling pump.
2. If this condition happens after an electrical storm, motor
or control box may be damaged by lightning.
3. Resistance reading of the motor with lead wires
disconnected from the control box can determine if
trouble is in motor or control box.
1. Impeller may be partially clogged with some foreign
objects causing noise and overload on the motor.
2. Impeller may be rubbing on wear ring due to bent
shaft or misalignment.
3. Pump may be operating too close to shut-off.
Check head.
1. Lower control switch may be set too high.
2. Run pump on hand operation for several minutes
with small amount of water running into basin to clean
out solids and grease. This allows pump to break
suction and surge which will break up the solids.
If level switch is set properly this condition generally
will not occur.
3. Trash and grease may have accumulated around oats
causing pump to operate erratically.
WIRING DIAGRAMS
PROBE TEST RESISTOR
ON HAZARDOUS LOCATION ONLY
PROBE TEST RESISTOR
ON HAZARDOUS LOCATION ONLY
PROBE TEST RESISTOR
ON HAZARDOUS LOCATION ONLY
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