cooling rates for the solenoid are good. In parallel cold return.

shuttting down the system. isolated cold box by closing v135. preparing to 
pump out cold box.

The cold box was isolated and pumped out after it warmed up. It has been 
refilled with helium.
Turbine 2 speed indicator failed at some time during the last run. After 
the turbine inlet vavle was closed the turbine continued to read full 
speed. I am removing the controller to look at it. The main power has been 
turned of for this procedure.

s

Solenoid tripped  off Monday morning due to high compressor pressure. 
Regenerated purifier on Tuesday. Started compressor at 9:00 this morning.

Solenoid tripped off Sunday. Restarted compressor and cool down of cold box.

see bitmap for temps/pressures after presurrizing coldbox. Preparing to 
start flow to turbines, then will start flow to solenoid in parallel warm 
return.

Last night at about 7:00 there was a large power bump that shut the 
compressor and water pump off. I came in this morning and am restarting the 
system.

I could not control the vacuum devices using EPICS. The buttons could be 
pushed, but nothing would respond. The PLC was in local mode. Thumbwheel 
to 100, push On/Open button to put it into remote mode.

regenerated adsorber
replaced MV902 "ON" switch (used nitrogen precooling on switch)

Solenoid quenched on power lead temperature last night at about 6:00. I 
restarted flow to the solenoid in parallel cold return. Switched to series 
mode and am building liquid. 

The power has been out for about 24 hours. Recovering coldbox, solenoid and 
beamline vacuum.PLC is down for the vacuum system. Started compressor and 
am flowing warm helium through the soleniod to warm it up while the vacuum 
recovers.

The solenoid tripped off this morning due to pwer lead over temp. The 
compressor was also off. I restarted this morning at about 8:15 in 
parallel cold return. Switching to series mode at 3:40.

recovered system and energized solenoid at about 6:00 this evening.
At 9:30 power lead temps quenched solenoid again. MV52 stuck open during 
start-up.

The PLC Limit switch power supply was tripped off on Saturday. I came in 
and reset it and restarted all the vacuum systems that had tripped off. 
The power leads were found to be warming up. This morning they were at ~ 
45K. I stopped flow to the power leads and will allow them to warm up 
above 80K and then will recool them.