Answer: The lubricating oil should be replaced in time when the new machine has been running for 500 hours or the lubricating oil reaches the replacement cycle, the lubricating oil is emulsified by water, or the carbon deposits are black. The details are as follows:
(1) Stop the machine, close the outlet door, and take measures to prevent the pressure relief valve from releasing pressure, so that the system maintains a certain residual pressure to facilitate oil drainage.
(2) The lubricating oil should be drained immediately after the air compressor is stopped, so that the tiny particles suspended in the oil can be discharged out of the machine along with the lubricating oil.
(3) Connect the oil drain pipe, open the ball valve, and drain the oil into the waste oil collection barrel.
(4) For the oil stored in the oil pipeline, cooler, and main engine, the connected pipes should also be removed for drainage and cleaning.
(5) Close the drain ball valve, open the oil filling cap, and fill in new lubricating oil until the oil mark reaches the upper line. In actual oil change work, since all the oil in the system is drained, the oil level can be added to above the upper line of the oil mark when refueling, but be careful not to add too much oil, otherwise the excess oil will be carried away by the air; Cover the oil filling cap and pay attention to whether the O-ring is in the correct position.
(6) When changing the oil, the oil filter should be replaced at the same time. When replacing the oil filter, apply a layer of oil on the rubber sealing ring of the new oil filter and tighten it.
(7) Start the machine and check the oil level after running. If the oil level is low, add some oil as appropriate.
