When the water pump rotor is working at a high speed, if its quality is not balanced, a large centrifugal force will be generated when it rotates, causing the water pump to vibrate or damage. The balance of the rotor is achieved by the mass balance of the various parts on it. Therefore, the static balance verification work should be carried out on the newly installed impeller.
If the water pump has relatively minor faults, remember not to let it work. If the packing of the water pump shaft is worn out, it should be added in time. If it is used continuously, it will leak air. The direct effect of this is that the energy consumption of the motor will increase, which will damage the impeller.