From riteshj at snf.stanford.edu Fri Jun 19 13:13:32 2009 From: riteshj at snf.stanford.edu (riteshj at snf.stanford.edu) Date: Fri, 19 Jun 2009 13:13:32 -0700 Subject: Problem wbnitride SNF 2009-06-19 13:13:31: Low liquid level sensor keeps going on and off Message-ID: the acid is not heating because of this. From riteshj at snf.stanford.edu Fri Jun 19 14:53:53 2009 From: riteshj at snf.stanford.edu (riteshj at snf.stanford.edu) Date: Fri, 19 Jun 2009 14:53:53 -0700 Subject: Comment wbnitride SNF 2009-06-19 14:53:52: heating hot pot Message-ID: The hot pot (h3po4) has been heating slowly as the LL alarm is intermittent. H3PO4 hot pot is usable for now. but the LL alarm persists intermittently From jhaydon at snf.stanford.edu Mon Jun 22 13:11:04 2009 From: jhaydon at snf.stanford.edu (jhaydon at snf.stanford.edu) Date: Mon, 22 Jun 2009 13:11:04 -0700 Subject: Problem wbnitride SNF 2009-06-19 13:13:31: Low liquid level sensor keeps going on and off Message-ID: Replaced level switch and noticed the bubbler N2 pressure was set at 6psi lowered pressure to 2 psi. Ran for about ten minutes without any faults. was having several faults per minute before. Drained some liquidto verify level sensor operation. Worked correctly From jhaydon at snf.stanford.edu Mon Jun 22 13:11:27 2009 From: jhaydon at snf.stanford.edu (jhaydon at snf.stanford.edu) Date: Mon, 22 Jun 2009 13:11:27 -0700 Subject: Comment wbnitride SNF 2009-06-19 14:53:52: heating hot pot Message-ID: see problem report