4.
Remove the oil filler plug.
5.
Add oil until the oil level is between the minimum and maximum levels of the oil sight glass.
6.
Replace the oil filler plug.
7.8.3 Replacing the Oil Exhaust Filter
The oil exhaust filter prevents oil vapours from being emitted from the vacuum pump with the
exhaust air. If the filter becomes saturated, the maximum vacuum level can no longer be reached.
Replace the filter in case of vacuum problems or as specified in Maintenance Schedule on page
24.
7.8.3.1 Pump 4 m
3
/h
Figure 12: Replacing the Oil Exhaust Filter
Follow the step below to remove the old oil exhaust filter:
1.
Remove the oil exhaust filter (1) from the vacuum pump (2).
Follow the step below to install a new oil exhaust filter:
2.
Turn the new filter into the vacuum pump.
Make sure the O-ring is properly placed on the filter inlet.
Maintenance 31