chandra.romel@LIGO.ORG - posted 11:13, Tuesday 06 November 2018 - last comment - 17:28, Tuesday 06 November 2018(45048)
EY roughing pump & purge air tested
Turned ON QDP80 roughing pump for a couple of hours along with the purge air skid to test in preparation for next week's vent. Purge air dew point measured -43degC.
Comments related to this report
kyle.ryan@LIGO.ORG - 17:28, Tuesday 06 November 2018 (45073)
I ran the vent/purge supply (Kobelco skid), QDP80s and levitated the Vertex, YBM and XBM turbos (so as to charge batteries) at the Corner Station -> Note that the Kobelco compressor wouldn't start initially. It displayed an "RTD error" which wouldn't reset and then displayed "-115 F" for all temperatures. After powering on/off a few times it finally cleared up and then started/ran normally. After 2 hours of run time the dew point, as measured at the YBM vent/purge valve, was -43C. All of the air temperatures on the Kobelco were much cooler than normal (the lube oil temperature was normal) due to the lack of demand.
I ran the vent/purge supply (Kobelco skid), QDP80s and levitated the Vertex, YBM and XBM turbos (so as to charge batteries) at the Corner Station -> Note that the Kobelco compressor wouldn't start initially. It displayed an "RTD error" which wouldn't reset and then displayed "-115 F" for all temperatures. After powering on/off a few times it finally cleared up and then started/ran normally. After 2 hours of run time the dew point, as measured at the YBM vent/purge valve, was -43C. All of the air temperatures on the Kobelco were much cooler than normal (the lube oil temperature was normal) due to the lack of demand.