1. Abnormal vibration
2. Insufficient traffic
Main reason: The installation height of the water pump is relatively high, which prevents the impeller from fully immersing, resulting in a decrease in the water output of the water pump; The water pump rotates in the opposite direction; The outlet valve cannot be opened; The outlet pipe is not smooth or the impeller is blocked; The wear-resistant ring at the lower end of the water pump is severely worn or blocked by debris; The density or viscosity of the pumped liquid is too high; Impeller detachment or damage; Multiple water pumps share the same pipeline for output, and the sealing of the one-way valve is not tight or there is no one-way valve installed
Troubleshooting: Control the allowable deviation of the installation elevation of the water pump and do not arbitrarily expand it; Before running the water pump, the motor should be idle and the direction of the water pump should be checked. If the direction is not correct, check whether the power phase sequence is incorrect; Check valves and perform regular maintenance; Clean up blockages in pipelines and impellers, and regularly salvage debris from the reservoir; Replace the wear-resistant ring and clean the debris; Re match with a suitable pump; Reinstall or replace directly; Install the one-way valve and replace the one-way valve seal
3. Unable to start