Tables
Table
Title
Page
1
Accidents which affect the life of the safety bearings
5
2
EXT250M technical data
9
3
Checklist of items
11
4
Vent-valve orifice diameter
(with atmospheric pressure at the inlet of the vent-valve)
17
5
Vent-valve orifice diameter
(with 2 bar absolute, 2 x 10
5
Pa pressure at the inlet of the vent-valve)
17
6
Pump cooling methods for different applications
20
7
Fault finding
28
EXT250M Turbomolecular Pump
iii
