Appendix G TriStar II 3020
G-4 302-42828-01 - Dec 2012
3. Close all valves; then open valves 6, 7, and 10.
4. Allow evacuation to continue for 20 minutes. This pulls a vacuum on the helium line to the gas
bottle. The manifold pressure transducer should fall close to zero.
5. Close valves 6, 7, and 10.
Be sure to allow evacuation for a full 20 minutes. If evacuation time is too short,
trapped air may remain in the lines.
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