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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.
Around 11:26am on 03/12/2023
1. Set the "Mode End: Coldhead Temperature" to 3 K
2. Had to switch the LQ-A to the Manual mode for a minute and the switched back to Liquefy mode to enable the change made in the previous step.
3. See the cold-head temperatures since 03/06/2023.
4. Flow change after making the change on Mode End: Coldhead Temperature" to 3 K.
On 03/14/2023
LQ-A is still the same, LI501 shows 0.2 L. Adam suggested changing the outlet flow to 24 slm and I just changed it on the LQ-A Settings screen.
The issue was that, the FCAI hasn't go up beyond ~8slm although FCAQ is set to 24slm.
Then, on 03/14/2023 around 4:20pm CST, we closed the NV501A needle valve as Adam suggested, to improve the Liquefaction on LQ-A. It was between 1/4 and 1/2 a turn opened position before it was completely closed.
On 03/15/2023 around 2:20 pm
We opened the NV501A needle valve by two full turns from the current setting(fully closed position) as Joey (QT) recommended.
On 03/16/2023
1. In addition to the 2 turns (open) on 03/15/2023, NV501A was opened with one more full turn.
2. We adjusted the PRV501A, in order to obtain a smooth inlet flow.
* We noticed that it takes about ~10min response time after changing PRV501A.
A screen video of Liquefier A
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