Some maintenance tips for vacuum pumps

How much do you know about the maintenance of vacuum pumps? Now I will reveal some maintenance tips for vacuum pumps:

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

2. The oil change period is determined by the user's discretion in consideration of actual conditions of use and whether it can meet performance requirements. Generally, when a new vacuum pump is pumping clean and dry gas, it is recommended to change the oil once every 100 hours of work. After no ferrous metal powder can be seen in the oil, the oil change period can be extended appropriately in the future.

3. Frequently check the oil quality. If the oil is found to be deteriorated, it should be replaced with new oil in time to ensure that the vacuum pump is working properly.

4. The lubricating oil of the vacuum pump shall be changed after 100 hours during the working month, and the oil shall be changed once every 500 hours thereafter.

5. Under normal circumstances, the vacuum pump should be overhauled after 2000 hours of operation. Check the aging degree of the rubber seals, check whether the exhaust valve plate is cracked, and clean up the dirt deposited on the valve plate and exhaust valve seat. Clean the parts in the entire vacuum pump cavity, such as rotors, rotary vanes, springs, etc. It is generally cleaned with gasoline and dried. After cleaning the rubber parts, wipe them with a dry cloth. When cleaning and assembling, handle with care and be careful of injury.

6. 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.

7. Check whether there is any looseness in the vacuum pump pipeline and joints. Turn the vacuum pump by hand to see if the vacuum pump is flexible.

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

9. Turn on the motor. When the vacuum pump is running normally, open the outlet pressure gauge and the inlet vacuum pump. After seeing the proper pressure, open the gate valve gradually, and check the motor load at the same time.

10. Try to control the flow and head of the vacuum pump within the range indicated on the label to ensure that the vacuum pump runs at a high efficiency point to achieve the energy-saving effect.

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

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

13. During the working month of the vacuum pump, the lubricating oil shall be changed after 100 hours, and the oil shall be changed once every 500 hours thereafter.

14. Regularly adjust the packing gland to ensure that the leakage in the packing chamber is normal (it is better to leak out as a drip). Regularly check the wear of the shaft sleeve, and replace it in time when the wear is large.

15. If the vacuum pump is out of service for a long time, it is necessary to disassemble the pump completely, wipe off the water, coat the rotating parts and joints with grease and install them, and keep them properly. When the vacuum pump is used in the cold winter season, after stopping, unscrew the water drain plug at the bottom of the pump body to drain the medium. Prevent freezing and cracking.