Pump Down

Anthony Flannery flannery at leland.Stanford.EDU
Fri Aug 18 08:26:38 PDT 2000

Hey Gang,

This morning I found that the last user had left the rough pump valve
cranked all the way open. This is a big no-no.  Without LN2 in the trap,
there is a VERY good chance we will get major backstreaming of oil into
the chamber.  The last time this happened the system went down for 9

Refill the trap, rough pump it down (yes, you have to wait), close the
rough pump valve.

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