When performing last nights refrigerator adjustments I also increased the
compressor discharge pressure to 11.25 barA. Also the backup air compressor
was tripped off again and I reset it. Finally I opened the city water flow
to the compressor water package chiller. PI110-1 reads 9.25 barA and PI120-1
reads just over 4 barA. Both power lead flowmeters pegged to top of scale.
Reset the "first trip" device that Don Dale had loaned us.
This morning the power leads had crept up slightly but still well below
trip settings. Oscillations have not appeared yet. LHe vessel heater at
about 14 to 15 %. Shield heat at about 16 %. Saved screen shots of
m9_solenoid.dl and striptool windows to files may6_04_0900.BMP and
may6_04_0905.BMP. TE106 is 81.6 Kelvin. Solenoid Current is stable at 404
Amps. (DVM meter reads 20.2) Both power lead flowmeters still pegged to top
of scale.
Closed HIC142 for 1 second then opened it wide open again to see effect on
power lead flows. Other than the initial blip they just fall back to their
previous value, no improvement. See file may6_04_0915.BMP. Adjusting
turbine speeds slightly. Going to take a check in the compressor building
then going on to other work. |