GPI M-3260 Serie Guía De Operación página 4

TROUBLESHOOTING
A. MOTOR DOES NOT RUN.
1. No electrical power to pump. Check breaker,
switchbox and wiring.
2. Thermal protector tripped. Allow motor to cool.
Thermal protector will automatically reset.
3. Rotor or vanes jammed. Remove coverplate and
check for damage or obstruction.
B. MOTOR RUNS, BUT NO FLOW.
1. Tank level low. Add fuel to tank.
2. Clogged filter assembly. Remove and clean filter
assembly.
3. Clogged or broken suction pipe. Remove pump
and clear suction pipe, replace as needed.
4. Broken shaft key. Replace shaft key. Check rotor
or vanes for obstruction.
C. PUMP FAILS TO PRIME.
1. Air leak in system. Check for air leaks at all joints.
2. Bypass valve stuck open. Remove bypass valve
and clean or replace as needed.
3. Check valve stuck open. Remove check valve
and clean or replace as needed.
4. Rotor or vanes worn. Check rotor and vanes for
excessive wear.
D. LOW FLOWRATE.
1. Low voltage. Check incoming line voltage.
2. Clogged filter assembly. Clean filter assembly.
3. Air leak in system. Check for air leaks at all joints.
4. Bypass valve stuck open. Remove bypass valve
and clean or replace as needed.
5. Rotor or vanes worn. Check rotor and vanes for
excessive wear.
6. Outlet is blocked. Check all accessories for block-
age.
7. Clogged or broken suction pipe. Remove pump
and clear suction pipe, replace as needed.
E. MOTOR STALLS WHEN NOZZLE IS CLOSED.
1. Bypass valve stuck closed. Remove bypass valve
and clean or replace as needed.
2. Rotor or vanes worn. Check rotor and vanes for
excessive wear.
3. Low voltage. Check incoming line voltage.
F. FUEL LEAKAGE.
1. Threaded joint loose. Check and reseal threaded
joint.
2. Insufficient bolt torque. Retighten bolts.
3. Lost or damaged O-rings. Check O-rings for dam-
age. Replace as needed.
4. Shaft seal worn or damaged. Fuel leakage from
drain hole indicates shaft seal needs to be replaced.
G. MOTOR OVERHEATS.
1. Pumping high viscosity fluids. Pump only low vis-
cosity fluids.
2. Clogged filter assembly. Clean filter assembly.
3. Clogged or broken suction pipe. Remove pump
and clear suction pipe. Replace as needed.
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