| Status: | Fridge warming after blockage found |
| 0940 | MC = 170 K, Sorb = 250 K (flatline - looks like maximum), IVC = 1.4e-1 mbar |
| 1045 | Pump P1 volume to dump, down to P1=0.24 mbar. Then open Still gate valve. P1 jumps to 3.8 mbar. A lot of frozen air it seems. |
| 1055 | Fill LN2 storage Dewar |
| 1100 | Pump P1 volume to dump again, then open Condenser to P1. Goes up from 0.65 to 0.70 mbar. Open Still to P1 - pressure goes up a little more, to 0.90 mbar. Hard to say whether there's still a blockage. |
| 1105 | Fill LN2 cold trap bath. Trap 1 is in bath, Trap 2 is at room temperature. |
| 1120 | Pump still and condenser to dump, down to P1 = 0.38 mbar. |
| 1145 | Begin cryocleaning mixture through Trap 1. V6 = 12.8% |
| 1150 | G2 is rather high, 983 mbar. G1 is 638 mbar. Possibly the trap is full of contaminants and creating an impedance. |
| 1155 | Stop cryocleaning, pump mixture to dump. |
| 1210 | Stop pumping mixture to dump with Trap 1 (P1) down to 0.070 mbar. Dump (G2) = 790.3 mbar (current mixture amount). Remove Trap 1 from bath to let it warm up, monitor pressure on P1. |
| 1240 | Trap 1 nearly at room temperature. 9 mbar of contaminants in trap 1 (on P1). Start pumping trap contaminants out through vent with scroll pump. |
| 1315 | Trap 1 pumped down to 0.65 mbar on P1. That took a while, maybe it was still warming a bit. Trap at room temperature now. Close GHS valves and turn off scroll pump. |
| 1325 | Return Trap 1 to LN2 cold trap bath. Open V9 and V13a to expose mixture to cold trap overnight. |