Reports until 12:25, Tuesday 05 July 2016
H1 PSL
jeffrey.bartlett@LIGO.ORG - posted 12:25, Tuesday 05 July 2016 - last comment - 08:04, Thursday 07 July 2016(28154)
Change Diode Chiller Filter (WP #5983) 
Took advantage of laser being down (aLOG #28142 & 28145) to change the water filters in the chiller room. 
Swapped out the Diode Chiller filter. The filter looked fine, but changed it out anyway to see if this had any effect on the rising PSL chiller pressures. 
Did not change the Chrystal Chiller filter. The filter bracket is poorly mounted to the wall and is coming loose. Need to secure the filter bracket to the wall before unscrewing the filter canister.
Comments related to this report
jeffrey.bartlett@LIGO.ORG - 08:04, Thursday 07 July 2016 (28221)
Link 

  48 hours after changing the Diode filter the PSL chiller pressures and flows seem to be flattening out. Will continue to monitor over the next several days. The plan is to swap out the Crystal chiller filter in conjunction with remounting the filter housing.
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