The main fault of the hot water circulation pump-noise and vibration

1. The pipeline support in the hot water circulation pump is unstable. Stabilize the pipeline.
2. Liquid mixed with gas. Increase suction pressure to exhaust.
3. Cavitation occurs. Reduce the vacuum.
4. The bearing is damaged. Replace the bearing.

5. The motor of the hot water circulating pump is overloaded to generate heat. Adjust the flow rate and close the outlet valve.