Troubleshooting Methods of Deep Well Pump

malfunction	the reason	Method of exclusion
No water or water shortage	1. The moving water level is lower than the pump suction inlet. 2. Water mains leak or severe water pipe disengagement. 3. Loosen rotor and shaft. 4. Part of the impeller loose. 5. Motor reversal. 6. Pipeline blockage.	1. Increase the water pipe. 2. Replace the water line. 3. Replace the rotor. 4. Reassemble the impeller. 5. Replace the power connector. 6. Clear the blockage.
Pump flow is reduced	1. Seal ring is badly worn. 2. Filtering network, diversion shell, impeller flow path is blocked. 3. Voltage, frequency is low. 4. Moving water level drops more than pump rated head.	1. Replace the seal ring. 2. Clear the block. 3. Stop to be voltage, frequency reaches the specified value and then start. 4. Replace the high-lift pump.
Through the large table pointer swing Unit violent vibration or electricity	1. The pump shaft or motor shaft is bent. 2. Pump shaft, motor shaft and bearing wear serious. 3. Thrust bearings are worn or damaged. 4. Thrust plate tightening nut is damaged. 5. Thrust plate rupture. 6. Motor rotor sweep chamber. 7. Impeller, rotor imbalance or rotor breakage. 8. Loose coupling bolts. 9. Pump low-lift large flow motor overload. 10. Well water gushing water is not enough, intermittent water.	1. Repair or replace the pump shaft or motor shaft. 2. Replace the bearings. 3. Replace the thrust bearing. 4. Repair the shaft head and replace the nut. 5. Replace the thrust disk. 6. Identify the cause for repair. 7. Re-balance or replace the rotor. 8. Tighten the bolts. 9. Add gate valve to control the flow in the operating point operation. 10. Plus gate valve to control the amount of water.
Buzzing Motor can not start	1. Phase failure. 2. The voltage is too low. 3. Bearing hold the shaft. 4 rust ring between the impeller seal ring and so on. 5. Pump impeller impeller can not rotate.	1. Check the wiring or start up the equipment. 2. Adjust the voltage. 3. Repair the shaft and bearings. 4. Pry the pump to rotate or remove the pump. 5. Remove the foreign object.
Low winding burned Insulation resistance too	1. Joint water. 2. Winding damage. 3. Cable rupture. 4. Motor water shortage. 5. Phase loss operation. 6. Long-time overload operation. 7. The motor is buried in the sediment	1. Repair joints. 2. Wrap or replace the winding. 3. Wrap the cable. 4. Ensure that the motor is filled with water. 5. Check wiring and equipment. 6. Reduce the load so that the motor current does not exceed the value specified on the rating plate. 7. Install the motor according to the installation requirements

Manufacturers recommend: Shenlong stainless steel deep well submersible pump