We are all familiar with vacuum pump and have many applications. The vacuum pump oil needs to be replaced after using for a period of time. The replacement of vacuum pump oil is easy to say, but not so easy to operate. In order to let the majority of users correctly change the vacuum pump oil, we will share with you the methods of changing vacuum pump oil and related precautions. The following is the EVP vacuum pump manufacturer summed up a few points for your reference.
By gravity method, the container is placed under the oil drain port, and the screw at the oil drain port is screwed to let the old oil in the vacuum pump flow into the container automatically. After the old oil is drained out, a small amount of clean vacuum pump oil is injected into the air suction port to flush the inside of the vacuum pump chamber. Then, start the vacuum pump and run for about one minute. Then turn off the vacuum pump to discharge the injected new oil. If the discharged oil is still not clean, then it is necessary to inject new miscellaneous oil for flushing until it is clean. Then, screw on the oil drain screw. Screw off the screw on the oil filling hole, add the vacuum pump oil to the vacuum pump to make the oil level reach the oil mark, and then screw on the oil filling screw.
Place the container under the oil drain port by pressure method, and screw the drain hole screw. Close the suction port, open the vacuum pump at the same time, open the air ballast valve and cover part of the exhaust port of the vacuum pump to generate a sufficient internal pressure to discharge the dirty oil quickly. Then, flush the inside of the vacuum pump chamber according to method (1) and replace with new oil.
Precautions for changing vacuum pump oil:
(1) Keep it clean and avoid dirt mixing into the vacuum pump,
(2) Do not start the vacuum pump too long, to avoid excessive dry exhaust valve plate and fatigue,
(3) It is strictly forbidden to wash the vacuum pump without disassembly with medium oil, gasoline and alcohol,
(4) Oil change should be carried out after the oil temperature rises, so as to drain the visceral oil of vacuum pump.
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