Reports until 21:35, Tuesday 08 March 2016
LHO VE
kyle.ryan@LIGO.ORG - posted 21:35, Tuesday 08 March 2016 (25952)
Leaving CP8 in manual control overnight
Kyle, Patrick 

The new Beckhoff control parameters still need "tuning".  As of this writing, the control of CP8's level is via the Proportional term only.  Initial attempts resulted in overfilling which then resulted in a closed LLCV which then resulted in a warm transfer line.  Patrick and I opened the exhaust check valve bypass valve to relieve the back pressure and then cooled the transfer line via the manual LLCV bypass.  With the transfer line cold and the pump level responding to changes in the LLCV, I manually filled the pump to 95% full, closed the exhaust check valve bypass valve am leaving the LLCV manually set at 50% open overnight which is its recent nominal value to maintain the pump level.  

Jim Batch set up and included two MEDM screens so the X-end status can be monitored from home.  Patrick and Cheryl also are leaving an MEDM screen in the Control Room which can be monitored from home.  

2135 hrs local -> I'm leaving now and will monitor CP8's level from home (every 2 hours)