TROUBLESHOOTING GUIDE ( CONTINUED )
SYMPTOM
Motor stalls when
operating in bypass mode
Switch fails to
operate motor
Rapid overheating
of motor
6
EN
POSSIBLE CAUSE ( S )
1. Gears locked
2. Wiring defective
3. Bypass poppet binding
or damaged
4. Motor defective
1. Switch or electrical
connections faulty
2. Motor burned out
1. Duty cycle too long
2. Strainer clogged
3. Suction pipe clogged or
damaged
4. Fuel level low
5. Running too long in
bypass mode
CORRECTIVE ACTION
1. Remove gear coverplate
and inspect gears. Make
sure gears turn freely.
Replace if worn.
2. Use Wiring instructions in
the Installation Section to
ensure proper connections.
3. Using instructions in the
Repair Section, remove the
bypass poppet, spring and
O-ring. Clean cavity. Inspect
components and replace,
as necessary.
4. Replace motor as described
in the Repair Section.
1. Inspect for a blown fuse,
defective wiring or switch,
or improper electrical
connections. Replace
or install again, as
necessary. Refer to Switch
Replacement instructions
in the Repair Section.
2. Replace motor as described
in the Repair Section.
1. Pump operation should not
exceed the standard duty
cycle of 15 minutes ON, and
30 minutes OFF.
Allow the pump to cool
for 30 minutes.
2. Remove and clean strainer.
Install again.
3. Remove pump from tank.
Inspect suction pipe. Clean
or replace, as necessary.
4. Fill tank.
5. Limit bypass operation
to 5 minutes.