NEWS & BLOG
How do you change the oil in a rotary vane vacuum pump?
Category: Technical Support
Time: 2021-01-18
Summary: (1) Remove the rotary vane vacuum pump from the vacuum system, raise the end of the base motor slightly, open the drain plug to release the old oil, then rotate the vacuum pump while holding your hand over the exhaust port, allowing all the dirty oil inside the chamber to drain out through the drain port. Next, add 100–500 ml of fresh oil through the inlet port, continue rotating the pump for at least 5–10 turns, and repeat this cleaning process 3–5 times. Once the heavily contaminated oil has been completely drained, reattach the drain plug, place the pump back on a level surface, and add fresh oil separately through both the inlet port and the oil-filling hole. The oil change is now complete. (2) When changing the oil, avoid running the motor for extended periods to prevent excessive and fatigued movement of the exhaust valve vanes. (3) It is strictly forbidden to use kerosene, gasoline, alcohol, or other similar substances to clean the pump without disassembling it. Note: The best time to change the oil in a rotary vane vacuum pump is when the oil temperature has been raised.
(1) Remove the rotary vane vacuum pump from the vacuum system, raise the end of the base motor slightly, open the drain plug to release the old oil, and then rotate the vacuum pump while holding your hand over the exhaust port, allowing all the dirty oil inside the chamber to drain out through the drain port. Next, add 100–500 ml of fresh oil through the inlet port, continue rotating the pump for at least 5–10 turns, and repeat this cleaning process 3–5 times. Once the particularly dirty oil has been completely drained, reattach the drain plug, place the pump back on a level surface, and add fresh oil separately through both the inlet port and the oil-filling hole. The oil change is now complete.
(2) When changing the oil, avoid running the motor for extended periods to prevent excessive and fatiguing movement of the exhaust valve reeds.
(3) It is strictly prohibited to clean the pump non-disassembled using kerosene, gasoline, alcohol, or similar substances.
Note: It is best to change the oil in a rotary vane vacuum pump after the oil temperature has risen.