How To Repair The Malfunction Of Stainless Steel Submersible Pump

Feb 06, 2026

Submersible pump is also a commonly used type of pump in water supply equipment. Its common faults and maintenance methods are as follows:

 

1. The pump cannot start

 

Reason: The power supply voltage is too low; There is a circuit break somewhere in the circuit; The pump impeller is stuck by foreign objects; Cable breakage; The voltage drop of the cable is too high, and the cable plug is damaged; One phase of the three-phase cable is not connected; The winding in the motor room is burnt out.

 

 

Exclusion method: Adjust the voltage to 342V~418V; Identify the cause of the power outage and eliminate it; Dismantle the guide piece and remove debris; Replace according to the cable specification table; Use thicker cables instead; Replace the new plug, check the switch outlet and cable; Overhaul the electric motor.

 

2. The pump does not produce water after starting, produces little or intermittent water

 

Reason: The electric motor cannot start; Pipeline blockage; Pipeline rupture; The water filter is blocked; The suction port is exposed above the water surface; Reverse rotation of the motor, damage to the pump casing sealing ring and impeller; The head exceeds the rated head of the submersible pump by too much; The impeller rotates in reverse.

Troubleshooting method: eliminate circuit faults; Remove blockages; Repair welding or replacement of pipes; Remove blockages; Reinstall; Swap the wiring position of the power cord; Replace with new parts; Replace the high head pump; Reinstall.

3. The electric motor cannot start and is accompanied by sound

 

Reason: One of the phases is open circuit; Bearing holding shaft; There are foreign objects inside the impeller and the pump body is stuck.

Exclusion method: repair the circuit; Repair or replace bearings; Remove foreign objects.

 

4. Sudden interruption of pump water output and motor shutdown

 

Reason: Air switch tripped or fuse blown, power outage; The stator winding is burnt out; Impeller stuck; Water shortage in the wet submersible pump motor; The motor of the oil filled wet submersible pump is short of oil.

 

 

Troubleshooting method: Check for circuit faults, motor winding faults, and eliminate them; Check the cause of power outage and eliminate the fault; Repair the stator winding; Eliminate clutter; Repair the motor.