cryo_fail.md

Emergency proceduce if the temperature controller fails or Sudden power failure at beamline

!!! danger "Talk to Beamline Scientist or operators --- DONOT TRY THIS WITHOUT ASKING" If you suddenly saw the temperature controller is not showing the desired temperature

• If the your setup is in nitrogen condition (300K - 80K) and suddenly temperature is dropiing drastically and you don't have controls
  • Switch the valve Nitrogen to Helium

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• press off in the compressor (it is inside the hutch)

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• Change the EPIC PVs range manually
  • Go to screen 3 of the beamline computer
  • Find the CS-Studio for temperature
  • Click the output 1
  • Go to range and select Range3/High for Input A
  • Click the output 2
  • Go to range and select Range3/High for Input B
  • Click the output 3
  • Go to range and select On for Input C
  • Click the output 4
  • Go to range and select On for Input D

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