Addtime： 2020-07-16 Browse times： 3596
Vacuum pump has been more and more commonly used, today's small series on some simple faults and troubleshooting methods to do the following introduction, I hope to help you!
01 vacuum pump turning is not smooth, the reason for this situation is generally not used for a long time, resulting in rust at the end of the disc or because of the high water temperature caused by the pump cavity scaling. The elimination method is to fill the pump cavity with 10% oxalic acid for about 30 minutes, and then loosen the pump cover before turning, or reduce the fouling coefficient of the working fluid.
02 vacuum pump motor operation is not normal, if the motor phase is missing, check whether the power connector falls off; if the voltage is not normal, check the power supply voltage; if the AC contactor is damaged, replace the AC contactor.
The abnormal walking sound of 03 vacuum pump is generally caused by the working fluid filling the pump cavity when starting. At this time, open the drain outlet to discharge part of the working fluid in the pump, and reduce 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 that there is no working fluid, at this time check the working fluid supply; the other is the steering error, at this time as long as the steering can be corrected.
05. The vacuum degree of vacuum pump is low. If the pumping rate is low due to the small pump selection, the pump with higher pumping speed should be replaced; if the supply of working fluid is insufficient, the supply should be increased; if the temperature of working fluid is too high, the temperature should be reduced; if there is air leakage in the system, check and stop the leakage; If the disc or impeller is corroded, check and replace the round wheel or impeller.
06 water ring vacuum pump current is too large, see if it is due to the drain pipe upward pipeline is too high, if it is to reduce the height of the drain pipe; if it is because of the excessive supply of working fluid, it is necessary to reduce the supply of working fluid.
07 vacuum pump mechanical seal leakage is generally due to the dry operation of the pump without injection of working fluid and coolant. At this time, it is necessary to replace the mechanical seal and change the operating procedures
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