Basic troubleshooting method for the failure of the vacuum pump

Vacuum pumps have become more and more common. Today, Xiaobian makes the following introductions on some simple faults and their elimination methods. I hope to help everyone!

01 Vacuum pump is not smooth. The reason for this situation is that it is caused by rusting at the end of the disc for a long time or due to excessive water temperature. The elimination method is to fill the pump cavity with 10% oxalic acid for about 30 minutes, then loosen the pump cover and then drive the car, or reduce the fouling coefficient of the working fluid.

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02 The motor of the vacuum pump is not working properly. If the motor is out of phase, check if the power connector is off. If the voltage is abnormal, check the power supply voltage. If the AC contactor is damaged, replace the AC contactor.

03 The abnormal sound of the vacuum pump is generally caused by the filling of the working fluid at the start of the pumping chamber. At this time, opening the sewage outlet to discharge part of the working fluid is a part of the working fluid in the pump.

04 vacuum pump can not form a vacuum This situation is caused by two reasons, one is no working fluid, this time to check the supply of working fluid; the second is the steering error, this time just correct the steering.

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05 Vacuum pump vacuum is low If the pumping speed is low because of the small pump selection, it is necessary to replace the pump with a larger pumping speed; if the working fluid supply is insufficient, increase the supply; if the working fluid temperature is too high, It is necessary to lower the temperature; if the system leaks, check and plug it; if the disc or impeller is corroded, check and replace the round or impeller.

06 The water ring vacuum pump has a large current. It is caused by the high pipe line up. If it is, the drain pipe height can be lowered. If the working fluid supply is too large, the working fluid supply should be reduced. Yes.

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07 Vacuum pump mechanical seal leakage is generally caused by dry running pump without injection of working fluid and coolant. At this time, it is necessary to replace the mechanical seal and change the operating procedures.