Committed to providing users with efficient, cost-effective pumps
Fixed telephone:86-0571-85857690
Common Faults and Troubleshooting
Release time:
2025-01-14
- Before disassembling the motor terminal box cover and water pump, ensure that the power supply is cut off.
| Failure Phenomenon | Cause Analysis | Troubleshooting Methods | Remarks |
| The motor fails to start after the starter closes. |
a) Power failure b) Fuse blown c) Motor overload d) Poor starter contact or coil failure e) Control circuit failure f) Motor failure |
a) Check the power supply b) Replace the fuse c) Check the system d) Replace the starter e) Check the control circuit f) Repair |
|
| Starter overload protection device trips (trips immediately after power is closed) |
a) Fuse blown b) Poor contact of overload protection device c) Loose cable connection or power failure d) Motor coil failure e) Mechanical parts of the pump are stuck |
a) Replace the fuse b) Check the starter c) Check cable connections and power supply d) Replace the motor e) Repair the water pump |
d) and e) Users must not repair themselves |
| Overload protection device occasionally trips |
a) Overload setting is too low b) Periodic power failure c) Low voltage during peak electricity consumption |
a) Reset b) Repair the power supply c) Install a voltage regulator |
|
| Overload protection device does not trip, but the water pump does not work |
a) Poor starter contact or coil failure b) Control circuit failure |
a) Replace the starter b) Check the control circuit |
|
| Uneven water discharge from the water pump |
a) Inlet pipe is too small b) Insufficient water volume at the inlet of the water pump c) Low liquid level d) Inlet pressure is too low relative to water temperature, pipeline losses and flow rate e) Partial blockage of the inlet pipe |
a) Increase the inlet pipe size b) Improve the system and increase the water volume c) Raise the liquid level d) Improve the system and increase the inlet pressure e) Check and clean debris |
|
| Water pump is running but no water is discharged |
a) Inlet pipe blocked b) Bottom valve or check valve closed c) Inlet pipe leak d) Air in the inlet pipe or water pump |
a) Check and clean debris b) Repair the bottom valve and check valve c) Repair the inlet pipe d) Refill the liquid and bleed the air |
|
| Water pump runs in reverse when the power is disconnected |
a) Inlet pipe leak b) Bottom valve or check valve failure c) Bottom valve is obstructed in the open or partially open position d) Air pocket in the inlet pipe |
a) Check the inlet pipe b) Check the bottom valve and check valve c) Repair the bottom valve d) Repair the inlet pipe and bleed the air |
|
| Water pump exhibits abnormal vibration and noise |
a) Inlet pipe leak b) Inlet pipe is too small or partially blocked c) Air in the inlet pipe or water pump d) The ratio of installation head to water pump head is too low f) Friction of water pump mechanical parts |
a) Repair the inlet pipe b) Increase or repair the inlet pipe c) Refill the liquid and bleed the air d) Improve the system or reselect the model e) Repair the water pump |
e) Users must not repair themselves |
Related issues
Common Faults and Troubleshooting
2025-01-14
Precautions before starting the water pump
2025-01-15
Mechanical Seal Replacement Manual
2025-01-16
Telephone
Factory Department
Message information
* Note: Please be sure to fill in the information accurately and keep the communication unblocked. We will get in touch with you as soon as possible.
Concerned about the public.
