FAQ
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| Symptom | What is the problem? | How to fix? |
| Intermittent water or no water or less water | 1. Motor does not start (low voltage, wire too thin or too long, drop too much voltage does not start or pump stuck up) 2. Pipe blocked or Strainer blocked. 3.Pipe broken 4. Suction out of water 5. Submersible pump turn in the opposite 6. Impeller rings and seal rings worn 7. Impeller loose or blocked 8. Rotor shaft loose or broken rotor bar. | 1. Eliminate circuit fault, find out the cause and rule out seizure 2. Clear the blockage 3.Repair broken part 4. Decentralization of submersible pumps, if still no water coming out, the pump head may be more than the range head, recommended for pumps. 5. Swap any two connector cables 6. Change the new impeller, seal ring 7.Reinstallation new impeller clean block 8.Repair or change rotor Listen Read phonetically Dictionary – View detailed dictionary 1. noun 1. purge 2. verb 1. remove 2. eliminate 3. get rid of 4. clear away |
| Large current swing the ammeter pointer | 1. Large flow, low head that is over usage range, Motor overload 2. Graphite bearings, rubber bearings or bushings abrasion, thrust bearing, the impeller down 3. Thrust bearing, the impeller down 4. Pump shaft bending, bearing misalignment | 1.Reduce flow With the flow control valve to the rating 2.Change new bearing or bushings, check the sediment size is too big 3.Change thrust bearing and thrust disc 4.Fixe or change axis bending to new one |
| Motor winding insulation resistance to ground less than 0.5 megohm tropical | 1. Magnet wire insulation aging or broken 2.Water into the cable 3. Gland failure | 1.Open winding, wrapped with adhesive tape or New coil rewinding 2.Find out broken part, wrapped with adhesive tape or use fire 3. Open, connected, re-wrapped |
| Motor will not start and with sound | 1.Broken wire or switch-off phase (single phase operation) 2. Guide bearing axle motor 3. Impeller pump stuck with a foreign body 4. Voltage is too low | 1.Repair broken, take a good fuse 2. Repair or change bearings, 3.Clean the foreign body 4. Adjust the voltage |
| Pump severe vibration | 1.Rotor not balance 2.Impeller not balance 3.Pump shaft bending 4.Bearing (Bush) abrasion 5.Blots loose 6.Pump collision well wall 7. Thrust fried, under thrust abrasion. | 1.Test rotor balancing 2.Test impeller static equilibrium 3.Straightening 4.Change bearing, bush 5.Tighten the bolt 6.Adjust the pump in the middle of well 7. Check if the pump Into the bottom mud of well, lift pump |
| Motor winding burn | 1.Inside of motor less water 2.Single-phase operation 3. Overloading long run | 1.Must filled with water 2.Check and adjust the start protection equipment to ensure the normal operation of the motor 3. Control flow through the valve to reduce the load, so that current and voltage cannot exceed the rated nameplate value |
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