T1 will not spin up. Warming up cold box.
I will leave the cold box to warm overnight and try it again in the morning.
Started flow to turbines. Both started. T1 seems a bit slow. HIC110 at 0.85 SI110 = 4100. Cool down started.
Raised PIC229 to 11Bar. Started to close HIC155. Cooling rates improve.
Coils temps <10K.Switching to series mode.
80K shield is down to <60K Liquid level not building. Power leads rippling and warming. T1 inlet 85K with 10%heater load. Lowered the set point of TI121 to 17K. Shut off flow to the 80K shield to try and warm them. Turbine 1 inlet temp dropping (83K) Power leads cooled and stablized, coil temps came down. Leaving it for 1/2 hour to evaluate.
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.
Temps bottomed out at ~16K. Switching to series mode.
opened power lead flow about 40 minutes ago. ~12K will let them stablize. LHE level >20%
No indication of problem. Turbines still running, but no flow to solenoid. Started flow. Solenoid ~20K.
Cool down continues.
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 tripped off Sunday. Restarted compressor and cool down of cold box.
restarting system. Compressor would not start. Idid not see anything that would not let it start. Pushed rest button upstairs, and reset contactor. Compressor started. preparing to start flow to solenoid in // cold return.
Started compressor yesterday with flow through the purifier overnight. Starting tubines this morning in parallel warm return
Valved off purifiers, but left LN2 on.
Switched to series mode at about 7:45.
power leads cold 50% liquid. Turning on power supply