Reports until 11:44, Friday 13 May 2016
LHO FMCS
bubba.gateley@LIGO.ORG - posted 11:44, Friday 13 May 2016 (27177)
Staging building chiller
The circulation fan on the staging building chiller is broken. The bearing support on the drive side has fractured due to metal fatigue. The circulation fan on this unit has been an ongoing issue for some time because of a poor design originally. I have removed the fan and the part of the housing that supports the above mentioned bearing.
This fan typically runs continually to ensure a positive pressure in the staging building. I have the booster fan running so there is still adequate positive pressure in the building. The AAON unit is running and keeping the building at a reasonable temperature given the current outdoor conditions.

One of the two condenser fans has also stopped operating.

This chiller only affects the assembly area and the upstairs area excluding the mezzanine lab.