Check the oil level position frequently, and adjust it to meet the requirements if it does not meet the requirements. When the vacuum pump is running, the oil level should be at the center of the oil mark.

 Frequently check the oil quality, and replace the new oil in time if the oil is found to be deteriorated, so as to ensure that the vacuum pump works normally.

The oil change period is determined by the user according to the actual use conditions and whether the performance requirements can be met. Generally, when a new vacuum pump pumps out clean and dry gas, it is recommended to change the oil every 100 hours or so. After no black metal powder can be seen in the oil, the oil change period can be extended appropriately in the future.

Under normal circumstances, the vacuum pump should be overhauled after working for 2000 hours, check the aging degree of the rubber seal, check whether the exhaust valve is cracked, and clean up the dirt deposited on the valve and exhaust valve seat. Clean the parts in the entire vacuum pump cavity, such as rotors, rotary vanes, springs, etc. Generally, it is cleaned with gasoline and dried. After cleaning the rubber parts, wipe them dry with a dry cloth. When cleaning the assembly, handle it with care and be careful not to scratch it.

If possible, clean up the pipes to ensure that the pipes are unblocked.

After reassembly, a trial run should be carried out. Generally, it must be run dry for 2 hours and the oil should be changed twice. Because there will be a certain amount of volatile matter in the vacuum pump during cleaning, it will be put into normal operation after it runs normally.

Check whether the vacuum pump pipeline and joints are loose. Turn the vacuum pump by hand to see if the vacuum pump is flexible.

Add bearing lubricating oil to the bearing body, observe that the oil level should be at the center line of the oil mark, and the lubricating oil should be replaced or replenished in time.

Unscrew the water diversion screw plug of the vacuum pump body, and pour water (or slurry).

Close the gate valve, outlet pressure gauge and inlet vacuum gauge of the water outlet pipeline.

Jog the motor to see if the direction of the motor is correct.

Start the motor. When the vacuum pump is running normally, open the outlet pressure gauge and the inlet vacuum pump. After seeing the appropriate pressure, open the gate valve gradually, and check the load of the motor at the same time.

Try to control the flow rate and head of the vacuum pump within the range indicated on the label, and only when the vacuum pump is running can the energy saving effect be obtained.

During the operation of the vacuum pump, the bearing temperature should not exceed the ambient temperature of 35C, and the temperature should not exceed 80C.

If abnormal noise is found in the vacuum pump, stop the machine immediately and check the cause.

When the vacuum pump is to be stopped, first close the gate valve and pressure gauge, and then stop the motor.

When the vacuum pump is in operation, replace the lubricating oil after 100 hours, and change the oil once every 500 hours thereafter.

Regularly adjust the packing gland, and the dripping in the stuffing chamber is normal (it is better to let the dripping out).

Regularly check the wear of the shaft sleeve, and replace it in time after the wear is large.

When the vacuum pump is used in the cold winter season, after parking, it is necessary to unscrew the water discharge screw plug at the lower part of the pump body to drain the medium. Prevent frost cracking.

If the vacuum pump is out of service for a long time, it is necessary to disassemble the pump body, wipe off the water, apply grease to the rotating parts and joints, install them, and keep them properly.