Maintenance of rotary vane vacuum pump

Dongguan Punok Vacuum Technology Co., Ltd. focuses on the research and development, production, and provision of vacuum system solutions for rotary vane vacuum pumps, serving the worldTop 500 companies and Chinese universities and laboratories, Punok products are sold well in various places and are currently a brand applied in the aerospace, pharmaceutical, medical, and nuclear industries in China.

Applicable occasions of rotary vane vacuum pump：

Gas type: Clean and dry air at room temperature without other mixtures, and air containing other dust and moisture is not allowed.

Job requirements: The import pressure is greater thanThe continuous working time at 6500Pa should not exceed 3 minutes to avoid pump damage caused by fuel injection.

Job requirements: The import pressure is less thanUnder the condition of 1330pa, it is allowed to work continuously for a long period of time.

Ambient temperature Vacuum pumps are generally not less thanUse in an environment with a room temperature of 5 ℃ and a relative humidity not exceeding 90%.

Maintenance of rotary vane vacuum pump(Common faults):

1. The vacuum degree of rotary vane vacuum pump is not high:

（1) Pump temperature too high:

（2) If the temperature of the extracted gas is high, the gas should be cooled first before entering the rotary vane vacuum pump. B、 If the hard object cylinder is worn due to inhalation, it should be repaired and replaced.

（3) If the cooling water of the pump is insufficient, the cooling water should be turned on or increased. D、 If improper assembly causes single-sided wear, it should be inspected and reinstalled.

（4) The oil level is too low and has not reached the sight glass oil line position. Sufficient oil should be added.

（5) The mixing valve is not tightly closed and leaks air. It should be tightly closed.

（6) Oil quality deteriorates, replace with new oil.

（7) The leakage of air in rotary vane vacuum pumps is often caused by poor oil seals on the pump's end face. At this time, the exhaust cover should be opened to check if the oil tank at point B is short of oil. If there is no oil, it should be refilled from the oil filling hole to fill the oil tank at point B

（8) The rotating spring is broken and should be removed and replaced.

（9) The valve plate is damaged and should be replaced.

（10) The sealing ring in the oil seal on the front panel is damaged or the rubber has deteriorated, and should be replaced.

（11) The rotary vane vacuum pump has been in use for a long time, with significant wear and increased clearance. Damaged parts should be repaired or replaced.

（12) The filter screen at the intake is blocked, remove and clean it.

Maintenance of rotary vane vacuum pump

2. Overloading operation of rotary vane vacuum pump motor:

（1) The temperature of the rotary vane vacuum pump is too high, please handle it according to item (1) of clause 20.

（2) Inhaling iron filings or other mechanical substances causing single-sided wear should be repaired or replaced with worn parts.

（3) Improper assembly causing single-sided wear or biting should be repaired and reassembled.

3. Rotary vane vacuum pump Other:

（1) Oil leakage at the shaft end, worn or improperly assembled sealing ring, should be replaced or reinstalled.

（2) When driving and spraying oil, if the oil level is too high, excess oil should be released, or if the oil blocking devices are broken, they should be readjusted or repaired.

（3) End face oil leakage, due to uneven collision between the front and rear end faces, the end plate is not tightened. The end face should be leveled and tightened.