[mrc-pcs] Problem mrc SNF 2013-05-11 02:19:07: Machine cannot pump itself down

kyunglok at stanford.edu kyunglok at stanford.edu
Sat May 11 02:19:08 PDT 2013

When I checked the machine after enabling it, I found that it was left vented. And I did the pump down procedure, which did not work. Although I opened the rough valve, the pressure gauge was stuck at around 300mT. I tried several time, but the machine could not pump itself down. Did a previous user see the same problem, so he/she left the machine vented?

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