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This video shows the prevention of a vacuum or vacuum machine, and in particular the replacement of Teflon heating tape and the replacement of oil in a vacuum. Adding a special additive XADO, which increases compression and reduces the time of vacuum injection and the operation of the vacuum.
Replacing Teflon - the procedure is not complicated, but to replace and drain the oil you need training and experience in this work. In general, in all industrial vacuums oil is added from 300 to 800 ml, which is not so much. Very often a maintenance is required, which consists in flushing the oil system due to a rare oil change, then the oil volume for the replacement increases almost 2 times.