Thursday, March 17, 2011

Re: Problem stsetch SNF 2011-03-15 15:42:29: Frequent interlock problems

The root cause of the problem was the nitrogen purge to the loadlock pump was set too low (border line). The flow would intermittently drop below the trip point and cause an interlock alarm. I verified this by intentionally adjusting the purge below the trip point. This cause the machine to fault out and display the error that we have been seeing.
I ran the Deep process for over 2 hours with no problems.

No comments: