What Are The Precautions For Water Pump Maintenance
Apr 01, 2026
From this, it can be seen that water pumps play a significant role in our daily lives, but this type of machinery has a major drawback: it is prone to malfunction after prolonged operation. But sometimes when a repairman is called to fix it, it's just a small problem that wastes money and time. Actually, we can learn about common faults and their solutions in a simple way, so that we won't be in a hurry when problems arise. Let's learn about them together.
(1) The water pump cannot start
Common reasons:
The packing is too tight or the impeller and pump body are blocked by debris accumulation; The pump shaft, bearings, and leakage reducing ring are rusted; The pump shaft is severely bent, etc.
Exclusion method:
Loosen the filling material and unclog the drainage channel; Disassemble the pump body to remove debris and rust; Remove the pump shaft for calibration or replace it with a new pump shaft.
(2) Insufficient traffic
Causes:
mostly due to leakage of suction pipes and bottom valves; Water inlet blockage; Insufficient water inlet depth of the bottom valve; The speed of the water pump is too low; Excessive wear of the sealing ring or impeller; Excessive water absorption height, etc.
Exclusion method:
Check the suction pipe and bottom valve, block the leakage gas source; Clean up the silt or blockages at the inlet; The inlet depth of the bottom valve must be greater than 1.5 times the diameter of the inlet pipe, and the inlet depth of the bottom valve should be increased; Check the power supply voltage, increase the water pump speed, and replace the sealing ring or impeller; Lower the installation position of the water pump or replace the high head water pump.
(3) The water pump is not producing water
Cause:
The pump body and suction pipe are not fully filled with water; The dynamic water level is lower than the water pump filter pipe; Broken suction pipe, etc.
Troubleshooting method:
Eliminate the fault of the bottom valve and fill the water intake with water; Lower the installation position of the water pump to keep the filter pipe below the dynamic water level, or wait for the dynamic water level to rise before pumping water from the filter pipe; Repair or replace the suction pipe.
(4) Severe vibration or noise generated by the pump body
Cause:
Poor installation of water pump or high installation of water pump; Motor ball bearings are damaged; The main shaft of the water pump is bent or not concentric or parallel with the main shaft of the motor.
Solution:
Install the water pump steadily or lower the installation height of the water pump; Replace the motor ball bearings; Correct the bent water pump spindle or adjust the relative position between the water pump and the motor.
(5) Excessive power consumption
Cause:
The water pump speed is too high; The main shaft of the water pump is bent or the main shaft of the water pump is not concentric or parallel to the main shaft of the motor; The selected water pump has an inappropriate head; The water pump sucks in sediment or has blockages; Damage to motor ball bearings, etc.
Solution:
Check the circuit voltage and reduce the speed of the water pump; Correct the main shaft of the water pump or adjust the relative position between the water pump and the motor; Select a water pump with appropriate head; Clean up sediment or blockages; Replace the ball bearings of the motor.
(6) Overheating of transmission shaft or motor bearings
Causes:
Lack of lubricating oil or bearing rupture, etc.
Solution:
Add lubricating oil or replace bearings.
I believe that through these contents, everyone has gained a certain understanding of pump faults and their handling methods. However, it should be noted that these are only common reasons for the "symptoms" of water pumps, and not all reasons. In practice, handling faults requires specific analysis based on the actual problem.
So, when encountering water pump problems that you cannot handle, you must seek the help of a professional maintenance company.