Product Manual

5922105-01B PRO20-012
TROUBLESHOOTING
SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION
A. MOTOR DOES
NOT RUN
1. Wiring problem Conrm all connections are tight and correct voltage is getting
to the pump.
2. Fuse blown Inspect fuse in fuse holder on power cord. If blown, replace.
3. Rotor or vanes jammed Remove coverplate to expose rotor. Remove any obstructions.
Check for excessive vane and slot wear. If damaged, replace.
4. Circuit breaker switch defective Replace switch.
5. Motor bad Contact the factory.
B. MOTOR RUNS
BUT DOES NOT
PUMP FLUID
1. Tank level low Add fuel to tank.
2. Clogged lter assembly Remove and clean lter assembly or replace.
3. Suction line problem Remove suction pipe and remove any obstructions.
4. Broken motor shaft key Replace shaft key in end of shaft. Check slot and vane for
excessive wear. Remove any obstructions.
5. Bypass poppet stuck open Remove bypass poppet and clean. If damaged, replace.
6. Motor running backwards Check wiring to conrm correct polarity.
C. PUMP FAILS TO
PRIME
1. Air leak in system Check for air leaks at all joints. Reseal and tighten.
2. Bypass poppet stuck open Remove bypass poppet and clean. If damaged, replace.
3. Vanes worn or sticking Check slots and vanes for excessive wear or damage.
If damaged, replace.
4. Motor runs backwards Check wiring to conrm correct polarity
D. LOW FLOWRATE
1. Low voltage Check battery voltage. Conrm voltage is correct.
2. Wiring problem Conrm correct polarity and all connections are tight. Conrm
wire size is correct and not too small.
3. Clogged lter assembly Remove and clean lter assembly or replace.
4. Air leak in system Check for air leaks at all joints. Reseal and tighten.
5. Bypass poppet stuck open Remove bypass poppet and clean. If damaged, replace.
6. Vanes worn or sticking Remove any obstructions. Check rotor slots and vanes for
excessive wear. Replace if damaged.
7. Outlet is blocked Check all accessories for blockage. Remove any obstructions.
8. Clogged or broken suction pipe Remove pump and clear suction pipe, replace as needed.
9. Fuel level low Fill tank.
10. Using off-the-shelf automatic nozzle Factory-supplied automatic nozzle is recommended.
11. Hose damaged Replace hose.
E. MOTOR STALLS
WHEN NOZZLE
IS CLOSED
1. Bypass poppet stuck closed Remove bypass poppet and clean or replace as needed.
2. Rotor or vanes worn Check rotor and vanes for excessive wear. Replace as needed.
3. Low voltage Check incoming battery voltage and tighten wiring connections.
4. Motor defective UL Listing requires specic treatment for motor replacement,
contact factory.
F. FUEL LEAKAGE
1. Threaded joints loose Check and reseal threaded joints.
2. Insufcient bolt torque Retighten bolts.
3. Lost or damaged O-rings Check O-rings for damage. Replace as needed.
4. Shaft seal worn or damaged Fuel leaking from drain hole indicates shaft seal needs to be
replaced.
5. Hose damaged Replace hose.
G. MOTOR
OVERHEATS
1. Pumping high viscosity uids Pump only low viscosity uids.
2. Clogged lter assembly Clean lter assembly.
3. Clogged or broken suction pipe Remove pump and clear suction pipe, replace as needed.
4. Duty cycle too long Duty cycle is 30 minutes ON and 30 minutes OFF.
5. Motor failure Ball bearings damaged. UL Listing requires specic treatment
for motor replacement, contact factory.
6. Bypass poppet clogged Remove bypass poppet and clean.