XZ direct rotary vane vacuum pump maintenance and maintenance: 1. To maintain the normal XZ rotary vane vacuum pump clean to prevent debris into the pump, the pump for a long time after use, the pump oil dirty, you must replace the pump oil, When replacing, unscrew the oilproof screw, put the dirty oil and then tighten the oil drain screw, add the clean vacuum pump oil to the midline of the oil. 2. When the vacuum pump is not working (parking) to be blocked on the inlet to prevent dust debris into the pump. 3. When the vacuum pump is working for a period of time, it is necessary to check whether the pump oil is still at the middle point of the oil standard. If it is not enough, add the oil. If it is found that the pump oil is decomposed or sundries, it should be replaced. 4. Vacuum pump during work, if found to be abnormal vacuum, to carry out dismantling. But you need to be guided by someone with some experience.