What are the causes of large fluctuations in vacuum pump current?

What causes the vacuum pump to have high current and low current after long time operation, the following is introduced for you.

1. Reasons for the sudden increase of current when vacuum pump is running

(1)The motor bearing is damaged or overheated.

(2) Sudden increase of displacement.

(3)Short circuit between turns of stator coil.

2. Reasons for sudden decrease of current when vacuum pump is running

(1)The instrument is malfunctioning.

(2)The impeller or balancing mechanism is seriously damaged and the bearing temperature is obviously higher than the normal range.

(3)The back pressure is too high and the displacement suddenly decreases.

(4)Liquefaction of liquid occurs

(5) The air inlet filter is blocked.

(6) The pumping container level is evacuated and air enters the pump.

The above is the reason for the sudden increase and decrease of current when the vacuum pump is running, hope it will be a reference for you, more related information welcome to consult us at any time