1. Check the oil level frequently. If it does not meet the requirements, it must be adjusted to meet the requirements. When the vacuum pump is running, the oil level to the center of the oil mark shall prevail.

2. Check the oil quality regularly and replace the new oil in time in case of oil deterioration to ensure the normal operation of vacuum pump.

3. The oil change period shall be considered according to the actual service conditions and whether it can meet the performance requirements, etc., and is determined by the user at his discretion. General new vacuum pump, when pumping clean and dry gas, it is recommended to change the vacuum pump oil once every 100 hours. After the black metal powder is not seen in the oil, the oil change period can be appropriately extended in the future.

4. In general, the vacuum pump should be overhauled after 2000 hours of operation, check the aging degree of rubber seals, check whether the exhaust valve plate is cracked, and clean the dirt deposited on the valve plate and exhaust valve seat. Clean the whole vacuum pump cavity parts, such as rotor, rotor, spring, etc. It is usually cleaned with gasoline and dried. After cleaning rubber parts, dry them with dry cloth. When cleaning and assembling, handle with care to avoid bumping.

5. Ensure that the pipeline is unblocked under the same conditions.

6. After the re assembly, it should be put into trial operation. Generally, it is necessary to run for 2 hours without load and change the oil twice. Because there will be a certain amount of volatile matter left in the vacuum pump during cleaning, it can be put into normal operation after the operation is normal.

7. Check the vacuum pump pipeline and joint for looseness. Turn the vacuum pump by hand to see if it is flexible.

8. Add the bearing lubricating oil into 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 supplemented in time.

9. Screw off the water diversion plug of the vacuum pump body and pour water (or slurry).

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

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

12. Start the motor. After the vacuum pump runs normally, open the outlet pressure gauge and the inlet vacuum pump. Gradually open the gate valve and check the load of the motor after it shows the appropriate pressure.

13. The flow and head of the circulating water vacuum pump should be controlled within the range indicated on the label as far as possible, so as to ensure that the vacuum pump operates at the highest efficiency point, so as to obtain the maximum energy-saving effect.

14. During the operation of the vacuum pump, the bearing temperature shall not exceed 35 ℃ of the ambient temperature, and the maximum temperature shall not exceed 80 ℃.

15. If there is abnormal sound in the vacuum pump, stop the pump immediately and check the cause.

16. To stop using the vacuum pump, first close the gate valve, pressure gauge, and then stop the motor.

17. Vacuum pump in the first month of operation, after 100 hours of oil change, after every 500 hours, change oil once.

18. The packing gland should be adjusted regularly to ensure that the leakage in the packing chamber is normal.

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

20. When the vacuum pump is used in cold winter season, after shutdown, the drain plug at the lower part of the pump body should be unscrewed to drain the medium completely. Prevent frost cracking.

21. If the vacuum pump is out of service for a long time, all the pumps should be disassembled, the water should be wiped dry, and the rotating parts and joints should be coated with grease, and properly kept.