Super SD - Motor & Power Issues; Flow & Pressure Problems; Noise, Vibration & Seal Issues

15
5. Trouble shooting
Trouble Possible Cause Remedy
Motor doesn’t No
power. Check the
power supply.
work.
Motor burnout. Recoil the motor
No power. Check the power supply.
Electromagnetic switch turns off the
pump.
Checking whether motor is overloaded;
If the switch is not working correctly,
Self-priming is too
slow.
Outlet is blocked. Check outlet pipe.
Water level in pump is not high
enough.
Fill pump up with liquid.
It is sucking air. Make sure there is no inltration of air
through the inlet, and that the water level is
high enough.
There is not
enough
Pressure in the
outlet.
It is sucking air. Check the inlet pipe.
Inlet is blocked. Clean the inlet.
Impeller blade is worn. Install a new impeller.
Direction of motor operation is wrong. Change the contact lines of the motor.
Seal leaks. Use a new seal.
Pump leaks due
to dry running.
Water level controller is incorrectly installed. Adjust water level controller.
Replace damaged parts with
new ones.
There is no liquid in the inlet.
The pump is left running after outlet is
blocked.
Inlet pipe leaks.
Water-level is not high enough
and pump can’t self-prime.
Loud sounds and
excess vibrations.
Motor shaft is loosened. Fasten the shaft.
Bearing is damaged. Replace bearing.
Seal leaks. Seal damaged. Replace the seal.
Seal packing damaged. Check whether the material is suitable for
the liquid.
Water at the inlet
but no pressure at
the outlet.
Inlet blocked. Remove sludge.
Air is being sucked in. Make sure there isn’t any leakage.
Crack on the
pump body.
Material not proper for the solution. Choose proper material.
Inlet pipe is not fastened. Fasten the inlet pipe and replace
damaged pipe with new one.
Long-term dry running makes the solution
very hot, and the pump exploded.
Replace damaged parts with new ones
and operate properly.
Motor is too hot. The motor is about to overload. Check whether the power is too high for the
motor, reduce the diameter of
Impeller or increase the power of motor.
The voltage is not steady,
Sometimes too high, sometimes too low.
Use a power stabilizer or surge protector to
protect the motor.