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TROUBLESHOOTING
PROBLEM
PROBABLE CAUSE
REMEDY
5. Pump is noisy.
a. Bent impeller.
a. Remove cover and check
impeller against a known
straightedge.
b. Motor is rotating in the
b. Verify motor is wired
wrong direction.
according to manufacturer’s
instructions.
c. Impeller clearance is not
c. Remove casing and verify
within tolerance.
clearance between impeller
rear and casing is correct.
d. Pump cavitation.
d. See cavitation causes in
the INSTALLATION section
of these instructions.
e. Solid particles in pump.
e. Remove cover and check
for particles in the pump.
6. Fluid leaks at sealing
a. Worn seals or damaged
a. Disassemble pump
surfaces.
o-rings.
according to the
DISASSEMBLY sequence
in these instructions.
Replace all worn seals or
damaged o-rings.
b. Not enough compression
b. Disassemble pump
on rotating seal.
according to the
DISASSEMBLY sequence
in these instructions.
Replace spring.