How to maintain the vacuum pump of vacuum coating machine is a problem that everyone is more concerned about. Today, the editor of Huicheng Vacuum will sort out some maintenance precautions for you, hoping to help you:

       1. Frequently check whether there is looseness in the pipeline and joint of the rotary vane vacuum unit. Turn the vacuum pump by hand to see if the vacuum pump is flexible.
       2. Regularly check the wear of the shaft sleeve, and replace it in time after the wear is large.
       3. In order to ensure the normal operation of the vacuum pump, the oil quality should be checked frequently. If the oil is deteriorated, the new oil should be replaced in time. The oil change period should be considered according to the actual use conditions and whether it can meet the performance requirements, etc., and it is determined by the user as appropriate. Generally, when a new stainless steel pump is used to remove clean and dry gas, it is recommended to change the oil once every 100 hours of operation. After no ferrous metal powder can be seen in the oil, the oil change period can be appropriately extended in the future.
       4. Start the motor. When the vacuum pump is running normally, open the outlet pressure gauge and the slide valve vacuum pump. After it shows the appropriate pressure, gradually open the gate valve and check the motor load at the same time.
       5. Add bearing lubricating oil into the bearing body, and observe that the oil level should be at the center line of the oil mark. Therefore, the oil level should be checked frequently. If it does not meet the regulations, it must be adjusted to meet the requirements. The lubricating oil should be replaced or supplemented in time.
       6. When the vacuum pump is to be stopped, first close the gate valve and pressure gauge, and then stop the motor. If the vacuum pump is out of use for a long time, it is necessary to disassemble all the pumps, wipe off the water, and inject the specified new oil into the rotating parts and joints, and place them in a dry place for safekeeping.
       7. Try to control the flow and head of the vacuum pump within the range indicated on the sign to ensure that the vacuum pump operates at the highest efficiency point in order to obtain the greatest energy-saving effect.
       8. Under normal circumstances, the stainless steel 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.
       9. Close the gate valve, outlet pressure gauge and inlet vacuum gauge of the water outlet pipeline.
       10. Unscrew the water diversion plug of the vacuum pump body, and pour water or slurry.
       11. Vacuum coating machine During the operation of the vacuum pump, the bearing temperature shall not be 30°C higher than the ambient temperature, and the absolute value of the temperature shall not be higher than 60°C. Press ZG-4 calcium-based grease into the roller bearing chamber to fill 2/3 of the bearing chamber space. Bearings that work normally should be filled with oil 3 to 4 times a year, and the bearings should be cleaned at least once a year, and all greases should be replaced.
       12. Regularly adjust the packing gland to ensure that the dripping situation in the packing chamber is normal and it is advisable to drip out.