CONDITION
PROBABLE CAUSE
Yellow run light stays on
1. Indicates H-O-A switch may be in the hand position.
continuously.
2. Level control switch may have failed causing pump to
continue to operate when water is below lower control.
3. Grinder assembly may be partially clogged causing pump to
operate at very a reduced capacity.
4. Gate valve or check valve may be clogged causing low
pump flow.
5. Pump may be air logged.
Circuit breaker trips.
1. Reset breaker by pushing clear down on handle then back to
on position. If breaker trips again in a few seconds, it
indicates excessive load which is 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.
Pump is noisy and pump rate is low.
1. Grinder may be partially clogged with some foreign objects
causing noise and overload on the motor.
2. Grinder impeller may be rubbing on wear ring due to a bent
shaft or misalignment.
Grease and solids have accumulated 1. Lower weight of level switch may be set too high. Set
around pump and will not pump out
bottom of lower weight even with bottom of inlet flange to
of basin.
grinder.
2. Run pump on manual operation for several minutes with a
small amount of water running into basin to clean out solids
and grease. This allows pump to break suction and surge, breaking up
the solids. If lever switch is set properly, this condition generally will
not occur.
3. Trash and grease may have accumulated around lower
weight causing pump to turn off too soon. Clean trash from
weight and suspension cable.
REPLACING GRINDER IMPELLER AND GRINDER SHREDDING RING
STANDARD TOOLS REQUIRED:
1.
Allen head socket set.
2.
Standard socket wrench set.
3.
Set of open end wrenches.
4.
Plastic hammer.
5.
Vise Grip pliers.
6.
Large screwdriver 5/8” wide blade. Heavy handle.
7.
Wire brush.
8.
Three cornered file.
9.
Several smaller screwdrivers.
IMPORTANT
– Pump should be thoroughly cleaned of trash and deposits before starting disassembly operations.
CAUTION – DISCONNECT ALL POWER AND CONTROL WIRES TO MOTOR AT CONTROL PANEL
BEFORE STARTING DISASSEMBLY OPERATIONS. NEVER RELY ON OPENING CIRCUIT
BREAKER ONLY.