Reports until 14:59, Wednesday 13 February 2019
H1 PSL (PSL)
richard.savage@LIGO.ORG - posted 14:59, Wednesday 13 February 2019 - last comment - 15:36, Wednesday 13 February 2019(46934)
PSL back on-line

PeterK, RichardM, BubbaG, RickS

This morning, there were several attempts to diagnose the issues with the diode chiller that was swapped in yesterday (Peter on the phone with TechnoTrans reps.) and Peter tried swapping controllers.  It appears that the Diode chiller needs a freon charge.

Bubba and Richard took the Cat frontloader to MidY to retrieve a chiller from the 3rd ifo. inventory and we swapped it in.  Both the Diode and the Crystal chillers appear to be functioning normally.   Note that we DID NOT swap the flow sensors over to the newer, vortex-style sensors.

The PSL is back up, servos are locked.  Modecleaner is locked.

Note that all controllers are back in their original chillers except for the faulty controller for the Crystal chiller that was swapped in yesterday.

Comments related to this report
michael.landry@LIGO.ORG - 15:36, Wednesday 13 February 2019 (46936)

Nice work under tough circumstances, thanks all!