| 1050 | Filled LN2 cold trap. |
| 1300 | Pressure in G2 is 590 mbar. A little worried that pressure has not risen to 605 mbar yet. Mixing chamber temperature is 6.2 K as is the temperature of the 1 K pot. There should be no liquid left in the fridge. |
| | Additionally, filling cold trap caused pressure in dump to decrease from 594 mbar to 590 mbar. |
| | Turn off mixing chamber heater. See what happens. |
| 1350 | Mixing chamber temperature seems to have stabilised at 5.2 K, or is at least cooling very slowly. Pressure in dump is 592 mbar, and temperature of 1 K pot has exceeded 7 K. Not sure what to make of it. It may be best to simply isolate the fridge. Cogitate for a few minutes. |
| 1400 | Close gate valve and condenser line speedivalve to isolate fridge. Close valve 1 on IGH, and open valve 12B to pump on nitrogen cold trap 2. |
| 1435 | Pressure in dump still 591 mbar. Start pumping out nitrogen cold traps from both ends: open valves 11A, 11B & 2. |
| 1620 | Presure in dump 592 mbar. Pumping out nitrogen cold traps from both ends caused pressure to fall to 589 mbar. Not sure why. No matter, let's clean the cold traps. Open up path from cold traps to He-4 pump. Close all valves on IGH, and vent valve. Extract helium and nitrogen cold traps. Wait for them to warm to room temperature. |
| 2000 | Cleaned LHe and LN2 cold traps one time around. |
| 2130 | Re-inserted cold traps. LHe cold trap not in all the way. Knut was difficult to turn as well. |
| 2200 | Begin cleaning mixture. |
| | Filled LN2 cold trap. |
| 2330 | Pump mixture into dump in preparation for condensation. |
| 2345 | Start 1 K pot, temperature 1.85 K. |
| 2355 | Start condensing mixture through nitrogen cold trap 1. |