Problem metalica SNF 2012-04-25 05:50:17: Roughing pump doesn't function

kokab at snf.stanford.edu kokab at snf.stanford.edu
Wed Apr 25 05:50:17 PDT 2012


I started running the process without problem and everything during the process was okay. after finishing the run I opened the roughing valve and it started with lots of noise and didn't ended with that, I waited for 10min for the pressure to go higher than 150mT but nothings happen then I closed the roughing valve since the noise was getting worse and worse.




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