Noisy Pump Operation
Bad bearing
Replace by electrician.
Air leak in suction
See 1
Suction blockage
Locate and clear blockage
Disturbance in impeller
Contact Supplier
Cavitations
Improve suction, reduce suction
lift, reduce number of fittings,
increase pipe size, increase
discharge pressure and reduce flow
By throttling discharge valve.
Motor overload cuts
Motor not connected
Have electrician check wiring.
properly
Low income voltage
Voltage at motors should be no
more than 6% above or below
nameplate voltage. Have electrician
check voltage, ensure pump is not
running on an extension cord.
Report low supply to authorities.
Overload due to binding
Contact Supplier
in pump or wrong size impeller
WARNING
If the pump is within the stated warranty period and you experience faults, always contact your
supplier. Failure to do this may void warranty. Refer to warranty documentation supplied with the
pump. All electrical work is carried out by a Qualified Electrician; under no circumstances should you
attempt repairs on the electrical components of pumps unless you are qualified to do so.
