Product Manual
6
SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION
F. FUEL LEAKAGE 1. Threaded joints loose Check and reseal threaded joints.
2. Insufcient 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 specic treatment
for motor replacement, contact factory.
6. Bypass poppet clogged Remove bypass poppet and clean.
TROUBLESHOOTING