Comment mrc SNF 2011-10-27 19:23:24: Update

cbaxter at snf.stanford.edu cbaxter at snf.stanford.edu
Thu Oct 27 19:23:25 PDT 2011


Removed gate valve and found wafer chips on the o-ring sealing
surface, cleamed o-ring and install gate valve back. Rough down
chamber for 1min, swiitch toggle to foreline and vent the chamber
and both vacuum gauges pressure shot up to atm the gate valve
does not seal.  The o-ring on the gate valve will need to be change,
I remove the gate valve.




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