chandra.romel@LIGO.ORG - posted 13:37, Saturday 03 March 2018 - last comment - 14:57, Saturday 03 March 2018(40829)
Chandra on site
Working at MY. Kyle and Gerardo are my phone buddies.
Working at MY. Kyle and Gerardo are my phone buddies.
Removed restrictor plate from return duct. System is circulating full flow now and so far, so good on temperature profiles. We suspect the restricted return flow was not allowing the bottom section of enclosure to heat up enough to match the other zones. Full flow (2000 cfm) compensates for leaks in enclosure. Set point up'ed to 70C+10C error, at 1C/hr ramp rate and 1 hr hold time. We will be back on site tomorrow to check on system and raise set point again.
I checked on all three purge air systems while on site. EY is running three compressors. EX is running four compressors. All three systems are switching towers. I did not measure D.P. or go in VEAs.
Leaving site now. Will monitor MY closely from home.