| Line 22 was replaced by line 22 |
| - *Please make sure that the dewars are always connected to the recovery line |
| + *Please make sure that the dewars are always connected to the recovery line when not in use |
| At line 23 added 2 lines. |
| + *Always measure the Helium level in the dewar before you take a Dewar away |
| + *When using the crane be aware that no equipment (or dewar) should be moved over the DMC detector |
| At line 24 added 16 lines. |
| + __Helium Transfer:__\\ |
| + *Before you open the extraction port you should release the pressure in the dewar which might have built up during transport by opening one of the release valves |
| + *Insert the Helium siphon first into the transport dewar. |
| + *close all manual pressure release valves |
| + *slowly lower the siphon into the dewar observe the pressure rise in the dewar (try to stay below 0.2bar) |
| + *you should see gas streaming out on the other end of the siphon |
| + *don't put your hands in the gas stream |
| + *when it starts to turn white you can insert this end into the cryostat Helium filling port |
| + *continue to lower the siphon into the transport dewar until you reach the bottom and lift it up by 10 cm |
| + *switch on the compressed Helium gas line and connect the gas hose to one of the pressure release valves\\ |
| + and open it. The dewar is now pressurized to 0.2bar over pressure. |
| + When the transfer is finished:\\ |
| + *stop the pressure line |
| + *release the dewar pressure before you remove the siphon. |
| + *make sure that the extraction and filling ports are properly sealed |
| + |
| Line 29 was replaced by lines 47-50 |
| - |
| + |
| + !Automatic Cryostat Control and Monitoring |
| + |
| + |
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