Start-up and operation of self-priming pump

1. Click the self-priming pump, and pay attention to whether the steering of the pump shaft is correct.

2. Pay attention to whether there is abnormal sound and vibration when rotating.

3. Pay attention to the readings of the pressure gauge and vacuum gauge. After starting, when the readings of the pressure gauge and the vacuum gauge fluctuate for a period of time and the indication is stable, it means that the pump has been filled with liquid and entered the normal infusion operation.

4. During the self-priming process before the pump enters the normal infusion operation, special attention should be paid to the increase of the water temperature in the pump. If the process is too long and the water temperature in the pump is too high, stop the pump to check the cause.

5. If the temperature of the liquid in the pump is too high and the self-priming is difficult, it can be stopped temporarily, and the liquid in the discharge pipeline can be used to flow back into the pump or add a liquid storage port to the pump body to directly add liquid to the pump to make the pump The inner liquid is cooled down, and then it can be started.

6. If the pump has strong vibration and noise during the working process, it may be caused by the cavitation of the pump. There are two reasons for the cavitation: one is that the flow velocity of the inlet pipe is too large, and the other is that the suction stroke is too high. When the flow rate is too large, the outlet control valve can be adjusted to increase the pressure gauge reading. When the inlet pipeline is blocked, it should be removed in time; when the suction stroke is too high, the installation height of the pump can be appropriately reduced.

7. The pump is stopped for some reason during the working process. When it needs to be restarted, the outlet control valve should be slightly opened (not fully closed). start under load.

8. Pay attention to check the pipeline system for leakage.