interprets what to do if the small submersible sand pump has a humming sound –

When the motor cannot start and there is a hum when using the small submersible sand pump, it can be solved by the following aspects:

(1) Fault: The wire is broken or the switch is broken (single phase operation)

Treatment method: repair the broken wire and connect the fuse

(2) Fault: the bearing of motor guide blocks the shaft

Treatment method: repair or replace the bearing and repair the shaft

(3) Fault: there are foreign objects in the impeller and the pump body is stuck

Treatment method: remove the foreign matter

(4) Fault: The voltage is too low

Solution: adjust the tension

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