Comment mrc SNF 2011-03-26 07:00:39: Foreline pressure spikes to near atmosphere upon roughing

alexneu at alexneu at
Sat Mar 26 07:00:40 PDT 2011

Happens immediately upon switching to roughing. If I switch back to foreline pumping the pressure will drop after a few seconds and I can then resume roughing and the foreline pressure won't climb very much.

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