When the fridge is in Cold Hold mode, fill it up to the Heat-Ex top and let it dry off the liquid in the fridge nose, keeping the material cool.
Please see the CCP (Cryo-Control parameters) after putting the fridge on Cold Hold mode.
- Status of Run and Bypass valves on CCP.
In the above picture, click on point 1, Fridge Valve, to open the VI to change the readout mode.
If the Readout mode is not “CONT” mode, put it on “CONT” mode on point 2.
Check the status of the Interlock with Heat-Ex Top; if it is not on Interlock, toggle the button to put it on the Interlock with Heat-Ex Top mode.