Reports until 12:12, Thursday 24 April 2014
LHO VE (VE)
corey.gray@LIGO.ORG - posted 12:12, Thursday 24 April 2014 - last comment - 13:56, Thursday 24 April 2014(11559)
MY Pressure Sensor Alarm Level Changed

A pressure sensor at MY had been MAJOR Alarming the last few days, but this is due to it being worked on.  It will be displaying values of a higher pressure for a month or so while it is valved out and being worked on.  To prevent getting alarms from this, we've bumped up the MAJOR alarm setting to 1x10^-6 (originally it would alarm at 5.11x10-8).

Since the Vacuum computer was really slow, Dave ssh-ed into the computer (still was slow) & did the following:

vacuum@control0:~$ caget HVE-MY:Y5_246BTORR.HIHI
HVE-MY:Y5_246BTORR.HIHI        5.11e-08
vacuum@control0:~$ caput HVE-MY:Y5_246BTORR.HIHI 1.00e-06
Old : HVE-MY:Y5_246BTORR.HIHI        5.11e-08
New : HVE-MY:Y5_246BTORR.HIHI        1e-06

We must revert the alarm setting when the VAC work is complete.

Comments related to this report
corey.gray@LIGO.ORG - 13:56, Thursday 24 April 2014 (11562)VE
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OK, 1e-6 wasn't good enough (Kyle started baking out RGA components today & this shot up the pressure on this sensor).  John said I could up the Alarm setting to 1e-05, and if it alarms here, then the VAC crew will just power OFF the sensor.