Hot Water Circulation Pumps-insufficient flow

1. The inlet and outlet valves of Hot Water Circulation Pumps are not opened, the inlet and outlet pipelines are blocked, and the abortion impeller is blocked. The solution is to remove the obstruction.
2. The impeller of the pipeline and Hot Water Circulation Pumps flow passage is partially blocked, the scale deposits, and the valve opening is insufficient. Remove the obstruction and readjust the valve opening.
3. The centrifugal pump voltage is low. Stabilization
4. The impeller is worn. Replace the impeller.
5. Use in excess of the rated flow. Adjust the flow and close the outlet valve
6. The suction lift of the centrifugal pump is too high. Reduce the suction lift.
7. The pump bearings are worn. Replace the bearing.