Reports until 16:43, Tuesday 27 September 2016
LHO VE
chandra.romel@LIGO.ORG - posted 16:43, Tuesday 27 September 2016 (30023)
CP3 overfill +
3pm local

Manually overfilled CP3 today (one day early) to test redundant thermocouples at exhaust (TE202A & TE202B) after rewiring at terminal. Fill took 50 sec. with 1/2 turn open on bypass LLCV. Left bypass exhaust valve open.

TCs were both wired backward.

Also rewired CP4 exhaust TCs but still need to test (heat gun first, then manual LN2 overfill). 

The plan is to use TC read back coupled with exhaust pressure to automate CP3 fills.

NOTE:  while I was at CP4 I happened to catch an event where the exhaust pressure rose and the pump level fluctuated a lot with a drop in LLCV value. This seems to be an anomaly and could have been a delayed reaction from the Norco rep opening Dewar valves this morning during annual inspection.