On we started the Liquefier A after cleaning up the Dewar A level sensors using the procedure (docdb). According to the procedure, the bottom tube did not vent gHe on when the coldhead temperatures are slightly above 240 K. So, we had to wait until all the coldheads are above 272K.
Since then (03/06/2023), Dewar A wasn't producing liquid until the 03/19/2023 afternoon. Below is the log of things that we did.
| View file | ||||
|---|---|---|---|---|
|