Jandy JCP Series Installation And Operation Manual page 20

Page 20
ENGLISH
Symptom
Noisy motor
Noisy pump
Jandy JCP Series High Performance Commercial Pumps
®
Possible Cause
Bad bearings.
Rotor strikes
Debris in fan shroud
Suction air leak
Restricted suction line due to
blockage or under-sized pipe.
High vacuum reading at pump
suction.
Debris in pump impeller
Pump spinning backwards
Cavitation
If issues persist, contact Jandy Technical Support at 1.800.822.7933
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Installation & Operation Manual
Solution
Have a certified technician replace the bearings.
Have a certified technician check the rotor.
With the power turned off, remove the motor's fan cover
and clean out any debris that may have become trapped
inside. Inspect the fan for damage. If the fan is damaged
or blades are missing, replace the fan immediately. An
unbalanced fan load can cause bearing damage.
See problem 1.
Clean the skimmer and pump strainer baskets. Inspect
piping for further blockages. Ensure all valves on the
suction side of the pump are fully open. The minimum
pipe diameter for the inlet of all JCP pumps is 6 inches.
Disassemble the pump and check for gravel, sticks,
leaves, plaster, or any other foreign objects that may be
clogging the impeller. Fine debris may also be located
between the impeller and diffuser on the snout of the
impeller.
See problem 1.
Improve the suction conditions of the pump. Increase
plumbing size, reduce the number of 90 degree fittings.
Increase the backpressure on the pump by closing
a valve on the pump outlet. Reduce the suction lift
distance.