SPX S2045 - Page 74

Troubleshooting Waukesha Cherry-Burrell
Page 74 95-03080 12/2010
PROBLEM POSSIBLE CAUSE SUGGESTED ACTION
Motor Overload
Faulty electrical connections Check wiring and repair/replace as
necessary.
Unrestricted discharge resulting in
too high a flow rate
Add discharge restriction to lower flow rate.
Impeller interference Disassemble pump and inspect for damage.
Remove interference if still present.
Replace worn/damaged parts.
Seal binding Disassemble pump and inspect for damage.
Check for
material crystallization on seals.
Discharge head too low allowing
pu
mp to deliver too much liquid
Raise discharge head until pump achieves
proper resistance to flow.
Liquid heavier or more viscous
than
rating
Contact your Waukesha Cherry-Burrell
customer service representative for sizing
information.

WCB Customer Service
1-800-252-5200 or 262-728-1900
Overload heaters too small for
motor
Inspect and replace as necessary.
Electrical supply, voltage,
frequ
ency, incorrect
Adjust voltage and frequency. Change
motor if necessary.
Impeller diameter too large for
du
ty
Contact your Waukesha Cherry-Burrell
customer service representative for sizing
information.

WCB Customer Service
1-800-252-5200 or 262-728-1900
Defective motor Replace motor.
Vibration/Noise
Pump not level Make sure all legs are touching the floor.
Level pump.
Piping not supported Support all piping as described in the
installation section.
Starved suction/Supply line
blocked
Shutdown pump
and remove blockage.
Foreign material in pump Disassemble pump, remove all foreign
material and inspect for damage. Replace
worn/damaged parts.
Starved suction/Insufficient NPSH
(Net Positive Suction Head)
available
Adjust system to provide correct NPSH.
Impeller hub/impeller shaft worn Disassemble pump and inspect for damage.
Replace worn parts.
Impeller shaft loose or bent Disassemble pump and inspect for damage.
Impeller out of balance Disassemble pump and inspect for damage.
Replace impeller.
Motor bearings worn Disassemble motor and inspect for damage.
Replace worn parts.