Comment tylanbpsg SNF 2008-04-07 19:38:27: Pump sounds different; N2 flow

king at snf.stanford.edu king at snf.stanford.edu
Mon Apr 7 19:38:28 PDT 2008


It's fairly subtle but it sounds as though it's straining a bit and runs in cycles of about 30 to 40 seconds.   Also, there is no N2 flow to the pump when the gate valve is closed (venting plus leak checks etc); not sure if this is how it's normally programmed.   FYI and thanks. 




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