What are the reasons for the insufficient or interrupted water output from the centrifugal pump?

Common faults of centrifugal pumps can be broadly classified into hydraulic faults and mechanical faults. In case of failure, it should be checked and eliminated in time, and the machine should not be "sick". The procedure for troubleshooting is: clarify the phenomenon - → analyze the cause - → to exclude.
When the centrifugal pump is running, the water output of the pump is insufficient.

the reason:

1. The suction pipe is not deep enough to be inhaled in the pump;

2. Leakage and water leakage at the joint of the suction pipe;

3. There are water and grass debris in the suction pipe or impeller;

4. The water delivery height is too high;

5. Sealing packing leaks;

6. The water lift is too high;

7, the speed is not enough;

8. The suction pipe is suddenly blocked by debris;

9. It is entangled or damaged by inhaled debris;

10, the nozzle inhales a lot of air

Method of exclusion:

1. Increase the length of the suction pipe, put a piece of wood on the water surface to prevent air from entering the water pipe

2. Tighten the connecting screws or replace the pads

3. Remove water and debris

4. Lower the water delivery height or close the gate valve on the small pressure water pipe

5. Tighten the gland or replace the packing

6. Adjust the suction head or close the small gate valve

7. Adjust the tightness of the drive belt. During the operation of the centrifugal pump, the pump suddenly stops discharging water.

8. Clear the blockage after shutdown

9. After shutdown, disassemble the pump, remove debris or replace the impeller

10. Deepen the depth of the suction pipe

All in all, the cause of the pump failure is multi-faceted. For careful and meticulous analysis, do not be busy disassembling the parts. You should follow the principle of “external and post-internal” to find out the cause, “prescribe the right medicine” and eliminate the malfunction.

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