Causes and solutions of faults in hot water circulation pumps

Reasons and solutions for the failure of the hot water circulation pump to discharge water

1. The inlet and outlet valves of the hot water pump are not opened, the inlet and outlet pipelines are blocked, and the abortion impeller is blocked

-Solution: Remove blockages

2. Insufficient water supply at the inlet and outlet, high suction head, and leakage at the bottom valve

-Solution: Shutdown inspection and adjustment

3. The pump is not filled with liquid and there is air in the pump chamber

-Solution: Open the pump cover or open the exhaust valve to exhaust all air

4. Air leakage in the suction pipe of the hot water circulation pump

-Solution: Tighten each sealing surface and remove air

5. The running direction of the motor is incorrect, and the motor's phase loss speed is very slow

-Solution: Adjust the motor direction and strengthen the motor wiring

6. Excessive pipeline resistance and improper selection of centrifugal pump

-Solution: Reduce pipeline bends and reselect pumps

Reasons and solutions for insufficient flow rate of hot water circulation pump

1. The inlet and outlet valves of the hot water circulation pump are not opened, the inlet and outlet pipelines are blocked, and the abortion impeller is blocked

-Solution: Remove blockages

2. The impeller of the pipeline and hot water circulation pump is partially blocked, with scale deposition and insufficient valve opening

-Solution: Remove the obstruction and readjust the valve opening

3. Use exceeding the rated flow rate

-Solution: Adjust the flow rate and turn down the outlet valve

4. Impeller wear

-Solution: Replace the impeller

5. The voltage of the centrifugal pump is low

-Solution: Stable voltage

6. The pump bearing is worn.

-Solution: Replace the bearing

7. The suction head of the centrifugal pump is too high

-Solution: Reduce suction lift

By katreenipump