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+ !Returning Liquid Helium Dewars |
+ please return dewars to the dewar station as soon as possible after the transfer |
+ *connect the dewar to the rubber hose of the dewar station |
+ *open the manual valve to the recovery |
+ *open the manual pressure release that is connected to the recovery on the dewar |
+ *check the other manual pressure release. it MUST be closed |
+ *retighten the locking nut of the Helium extraction port |
+ *connect the level probe |
+ |
+ IMPORTANT: |
+ recheck that all valves are in the right state and the level is reading before you leave |
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+ In case you are unsure about certain procedures, please contact sample environment staff |