Cleaning The Sight Glass - EBARA 80?25 Installation Operation & Maintenance

EBARA Multi-Stage Dry Vacuum Pumps
Be sure to use the outer most plugs. On all pump models, a second plug is
located on the inner flange. This is not a fill plug and should not be removed to
add lubricating fluid to the pump.
3. Place at least a 1 liter or 1quart capacity container below the drain plug for the
secondary reservoir.
4. Remove the drain plug from the secondary reservoir. Allow the lubricating fluid
to drain for several minutes to ensure sufficient drainage.
5. Check and clean the O-ring on the drain plug. Replace the O-ring if it is worn or
damaged.
6. Replace and tighten the drain plug for the secondary reservoir.
7. Remove the used lubricating fluid. Be sure to dispose of this lubricating fluid
properly.
The pump is now ready for fresh lubricating fluid.
8. Pour the lubricating fluid into the fill port while viewing the level on the sight
glass. Add lubricating fluid to slightly above the upper limit line.
9. Check and clean the O-ring on the fill plug. Replace the O-ring if it is worn or
damaged.
10. Replace and tighten the lubricating fluid fill plug.
5.4.7

Cleaning the Sight Glass

Should the sight glass become dirty, making it difficult to view the lubricating fluid level,
the glass can be removed, cleaned, and reinstalled.
CAUTION
!
Before cleaning the sight glass, the pump must be at atmosphere, and the
lubricating fluid must be drained. Failure to do so could cause severe damage to
the pump.
1. Remove the four screws securing the sight glass.
930601-P
Upper Limit Line
Lower Limit Line
Sight Glass
Pump Maintenance
25