5. Maintenance
ARV-310 5-4
5-3 Changing of Vacuum Pump Oil
5-3-1 Checking Oil
Check the followings for the status of the vacuum pump oil
once a week.
1. Oil condition and level
2. Time to reach vacuum decompression
1. Oil Condition and Level
Check the oil contamination and oil level through the window
placed on the rear side of the unit.
＜Oil Check Window＞
2/3 of Window
Centerline
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