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| Maintenance
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Ultra
Version M 22-April-2012
Purge screws
Schrader valve
#4-40 screw
adapter
8.0 Nitrogen Purge for the Ultra
The Laser Head has been factory purged with UHP (Ultra High
Purity) dry nitrogen to prevent condensation on the laser optics. If
any cover or access screw is removed for any reason, the Laser
Head should be purged again with UHP nitrogen.
1. Remove the two nitrogen purge/seal screws on the side of the
Laser Head.
2. Connect 5 psi (.345 bar) dry nitrogen to one seal screw hole,
using the Schrader valve and #4-40 screw adapter supplied in
the Accessories Kit.
3. Flow UHP dry nitrogen through the Laser Head for 5 to 10
minutes.
4. Stop the flow of nitrogen.
5. Replace the screw in the purge hole used as the exit port for
the dry nitrogen.
6. Remove the #4-40 screw adapter and Schrader valve from the
Laser Head.
7. Reinstall the purge/seal screw in the remaining open hole.