The solenoid tripped on power lead temps at about 9:15. I am recovering it 
from it's all around mode into parallel cold return.

No indication of problem. Turbines still running, but no flow to solenoid. 
Started flow. Solenoid ~20K.

Refrigeration sytem shut off at ~ 12:30 today. No apparent reason. Only 
light on was a cold box fault. 
Restarted in parallel cold return mode.

Solenoid cold, power leads cold. Alarm handler started.

Switching over to series mode.

The turbine 2 speed indicator control box STA 120 has been replaced with a 
newer style Jaquet controller. This is similar to the ones used in the 
ISAC helium liquifier. See attached photos for set up parameters. These 
were taken from the old controller, Sulzer documentation, and the ISAC 2 
controllers.

Temperture okay, but there are fluctuation in the power leads. PIC229 is 
trying to charge. The buffer tank pressure is just >0 psi. I will lower the 
liquid level to 40% to allow some helium to boil off into the buffer tank.

Solenoid quenched at about 6:00 tonight.
I restarted the compressor, then the cold box and turbines. When cold box 
was at 25K I started flow to the solenoid in parallel cold return.

The quench relay logic controller was not functioning correctly. It showed 
a "Trip" light and no other lights. I cycled the power to the controller 
and it now seems to be working properly. This did cause a quench and I am 
now recovering the system.

Tuesday 14:55

Removed jumper on back of PIC 901. This jumper should be off during
normal operation so the solenoid/refrigerator is protected from bad vacuum.

The following relays have been replaced in the Sulzer control panel:
K341, K379, K132, K324A, K314, K125, K127, K133, K252, K227, K233, K238, 
K239, K245, K246.
These were the one that had indications of sever rusting inside the case.
There are five more spare relays in the gray cupboard.

Solenoid is cold, liquid level is 35%, power leads cold and seem stable.
Added one bottle helium to buffer tank. Pressure is 7 psi..

System in good // warm return mode, temps coming down nicely. BCP2 cryopump 
does not look too healthy, temperature is just over 20K, very close to low 
set point.

TIC121 down to 120K, Mu1 return temp at 164K, Mu2 return at 273K, T1 inlet 
temp at 208K. Cooling looks good for overnight.

The solenoid quenched on powerlead temps this morning at 10:00. It is 
warming up and the power leads are >200K.Isolating and purging the coldbox 
is not very useful now, so I am shutting the system down.

Machine trip just as I was exiting the TRIUMF gate. QRL said cold box fault 
as did red lite on compressor. At cold box panel all turbine red lites were 
on and compressed air failure lite was on. But there was no problems with 
compressed air. On fist trip logger LED # 8 and 16 were lit. Restarted 
compressor then start flow to cold box, start turbines, start // warm 
return until temps returning back from solenoid were <= TIC121 then 
switched to //cold return mode. Opened cv155 to 0.88
Solenoid temps at 24K and starting to trend down.

Various start up problems :
MV51 stuck open. Finally got it closed by hitting the valve with a hammer.
Vacuum is bad in cold box as MV902 tripped closed.
Vacuum in solenoid has gone bad. Suspect boil off from inside solenoid. So 
far it is not recovering.
Previously T1 would not spin up - frozen.