42
TROUBLE
CAUSE
REMEDY
Pump overloads driver
False overload signal.
Wire/connections faulty.
Speed to high.
Specific gravity too high.
Pump bearings seized or
rotating element binding.
Check starter controls.
Check for hot spots in lines.
Check driver instruction section.
Check rated conditions.
Dismantle pump and replace part or
parts
causing seizure or binding.
Pump stops abruptly.
Pump binding at running fits.
Dismantle pump and realign rotor in
casing.
High
pump
thrust
bearing
temperature rise.
Incorrect lubrication, including
inadequate cooling.
Insufficient oil.
Contaminated oil
Replenish oil with correct grade lubricant
and assure cooling capacity.
Add oil.
Drain and refil with clean oil, change filter
Excessive seal leakage. Dirt across seal faces.
Replace seal.
Pump is noisy.
Cavitation.
Loose parts.
Noise in driver.
Check that pump is primed. Check for
high suction temperature, increase static
head. Check for obstruction in suction
line
Tighten or replace defective parts.
Check driver with stethoscope.
Check driver instruction section for trouble shooting instructions.
