EBARA Multi-Stage Dry Vacuum Pumps
Pump Maintenance
930601-P
22
Before attempting to add any lubricating fluid into the pump, it is imperative that
the secondary reservoirs are drained first. Failure to do so could result in
lubricating fluid being forced into the vacuum area of the pump.
!
NOTICE
Recommended lubricating fluids for pumps are Krytox 1525, FOMBLIN Y-LVAC
25/6, Barrierta J100, or equivalent.
5.4.1
Checking the Lubricating Fluid Level
With the pump operating, the lubricating fluid level in all sight glasses should be at or
above the lower limit line and, no higher than the upper limit line.
With the pump off, the lubricating fluid level should be at or just above the upper limit
line.
5.4.2
Sight Glass Locations
Inlet
(Top View)
Gearbox
Motor
Lubricating Fluid Level
Sight Glasses
5.4.3
Checking for Discoloration
If the color of the lubricating fluid is opaque or white, it has become contaminated with
moisture. If the color of the lubricating fluid is brown or black, it may have become
oxidized. If the color of the lubricating fluid has changed significantly from new, the
lubricating fluid should be replaced.