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Reports until 12:50, Tuesday 07 February 2023
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camilla.compton@LIGO.ORG - posted 12:50, Tuesday 07 February 2023 (67265)
CO2X Chiller switched back to original.

WP 10970  TJ, Camilla. Chiller pump repair documented in T2200364.

We turned off CO2X laser via medm and swapped the spare chiller that was installed alog#65302 (S/N ..813) with repaired original CO2X chiller (S/N ..822).

Mainly following procedure listed in alog#61325. As the pump was dry from the repair, we used the wet/dry vac on the chiller outlet to pull some water into the pump so that the chiller could start. We let the repaired chiller run for ~15 minutes connected to a short loop to check it worked and there wasn't any gunk in the lines before connecting to the laser cooling lines. We found a small amount of grease had leaked under the fan of the CO2X chiller, we will keep an eye on this but expect it is just from the fan being off for the last few months. 

Ryan C verified he could turn the chiller on from the control room. The CO2X laser is currently running fine. Spare chiller has been drained and wet vac'ed out. We've left all outlets open so it can continue to dry. 

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