5 - 8
10. Secure the cap, by turning it clockwise, onto the cartridge filament that was attached in
Section 5.1 9.
Figure 5.1-20 Cap Figure 5.1-21 Attaching the Cap
11. Verify that grease is applied to the o-ring and is free of particles, then attach the o-ring
to the groove.
Figure 5.1-22 Electron Gun O-ring
NOTE
: Thinly apply the supplied vacuum grease to the entire o-ring. Failure to do so can
cause air leak, trapped in the o-ring groove, to the electron gun when the electron
gun is moved during the beam axis alignment process. In addition, electron beam
irradiation can be forced off.
O-ring
Cap
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