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Source: Jinghua City, Qinhuangdao City Pump Co., Ltd. 1. Pump super-head running 1. Truncate the outlet pipe or reduce the height of the outlet 2. impeller or filter plugged 2. Clear debris 3. Low voltage caused by the decline in speed 3. Escape the peak of electricity 4. Three-phase motor steering error 4. Exchange any two-phase wiring position Impeller wear 5. Replace the impeller 1. Seal damage caused by motor water 1. Replace the seal Cable or winding damage 2. Replace the cable, replace the winding. 3. Cable connector into the water 3. Re-connector 1. Bearing damaged 1. Replace the bearing
Small submersible pump troubleshooting
Symptoms
the reason
Method of exclusion
Motor does not turn
1. The supply voltage is too low
1. Escape the peak of electricity
2. Wire thinning start voltage drop
2. Replace the wire as required
3. Centrifugal switch failure or capacitor damage
3. Adjust the centrifugal switch or replace the capacitor
4. Mechanical parts stuck
4. Adjust clearance cleaning. Rust removal
5 winding burned
5. Change the winding
Replace the winding 6. Cable segments
6. Replace the cable
7. Stop between the motor (thermal protector action)
7. Reduce the flow or mechanical resistance
Power off
8. Check the power reasons, troubleshooting.
9. Three-phase charging junction box inlet wiring blown
9. Disassemble the junction box and connect the break wire
10. Poor connection of cable and control box
10. Reconnect
11. Underwater cable joints are not tight or cable sheath and core insulation breakage
11. Reconnect and replace the cable.
Not on the water
1. Out of use
1. Replace the pump that meets the usage requirements
The motor does not turn
2. Check the motor does not turn the reason
3. Pump output hose connector leaks
3. Reinstall
Insufficient water
Insulation resistance is low
loud noise
Symptoms
the reason
Method of exclusion
Motor does not turn
1. The supply voltage is too low
1. Escape the peak of electricity
2. Wire thinning start voltage drop
2. Replace the wire as required
3. Centrifugal switch failure or capacitor damage
3. Adjust the centrifugal switch or replace the capacitor
4. Mechanical parts stuck
4. Adjust clearance cleaning. Rust removal
5 winding burned
5. Change the winding
Replace the winding 6. Cable segments
6. Replace the cable
7. Stop between the motor (thermal protector action)
7. Reduce the flow or mechanical resistance
Power off
8. Check the power reasons, troubleshooting.
9. Three-phase charging junction box inlet wiring blown
9. Disassemble the junction box and connect the break wire
10. Poor connection of cable and control box
10. Reconnect
11. Underwater cable joints are not tight or cable sheath and core insulation breakage
11. Reconnect and replace the cable.
Not on the water
1. Out of use
1. Replace the pump that meets the usage requirements
The motor does not turn
2. Check the motor does not turn the reason
3. Pump output hose connector leaks
3. Reinstall
Insufficient water
1. Pump super-head running 1. Truncate the outlet pipe or reduce the outlet height 2. Impeller or filter plugging 2. Clear debris 3. Low speed caused by the speed drop 3. Escape from the peak 4. Three-phase motor steering Error 4. Exchange any two-phase wiring position 5. Impeller wear 5. Replace the impeller Insulation resistance is low
1. Seal damage caused by motor water 1. Replace the seal 2. Cable or winding damage 2. Replace the cable, replace the winding. 3. Cable connector into the water 3. Re-connector loud noise
1. Bearing damage 1. Replace the bearing