6SP stainless steel deep well submersible pump operation faults and troubleshooting methods
No water or irregular water discharge:
1. The dynamic water level is lower than the pump suction port - add a water pipe. If there is still no water discharge and the pump head exceeds the range, it is recommended to replace the pump.
2. The water pipe is leaking seriously or the water pipe is disconnected - replace the water pipe or install the water pipe separately.
3. The rotor and shaft are loose - replace the rotor.
4. Part of the impeller is loose - reassemble the impeller.
5. The motor is reversed - replace the power connector.
6. The pipeline is blocked - remove the blockage.
The pump flow rate is reduced:
1. The sealing ring is severely worn - replace the sealing ring.
2. The impeller flow channel of the filter screen guide shell is blocked - remove the blockage.
3. The voltage and frequency are low - stop and wait for the voltage value to reach the specified value before starting again.
4. The dynamic water level drops beyond the rated head of the pump - replace the high-head pump.
The unit vibrates violently or the current is too large and the meter pointer swings:
1. The pump shaft or motor shaft is bent - repair or replace the pump shaft or motor shaft.
2. The wear between the pump shaft, motor shaft and bearing is too large - replace the bearing.
3. The thrust bearing is worn or damaged - replace the thrust bearing.
4. The thrust plate fastening nut is damaged - replace the nut or repair the shaft head.
5. The thrust plate is broken - replace the thrust plate.
6. The motor rotor is swept - find out the cause and repair it.
7. The impeller rotor is unbalanced or the rotor is broken - do a good job of dynamic balancing and replace the rotor.
8. The connecting bolts are loose - fix the bolts.
9. The low-head and high-flow motor of the pump is overloaded - add a gate valve to control the flow and operate at the working point.
10. The water pump does not have enough water inflow and intermittent water discharge - add a gate valve to control the water discharge.
The motor cannot start and there is a buzzing sound:
1. Phase failure (line or starting equipment) - check the line or starting equipment.
2. Voltage is too low - adjust the voltage.
3. Bearings are stuck - fix the bearings.
4. Rust between the impeller and the seal, etc. - pry the water pump to rotate or remove the water pump and reinstall it.
5. There is a foreign object in the pump and the Case impeller cannot rotate - remove the foreign object.
Insulation resistance is too low and the winding is burned:
1. Water enters the joint - repair the joint.
2. Winding is damaged - wrap it or replace the winding.
3. Cable is broken - wrap the cable.
4. Lack of water in the motor - make sure the motor is filled with clean water.
5. Phase-loss operation - check the line and equipment to ensure normal operation.
6. Long-term overload operation - reduce the load so that the motor current does not exceed the value specified on the nameplate.
7. The motor is buried in the mud - install the electric pump according to the installation requirements.
