installation_fp_sci
Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision | Next revision Both sides next revision | ||
|
installation_fp_sci [2023/02/17 20:11] pereira [Pumpdown of FP Chamber] |
installation_fp_sci [2023/02/17 20:12] pereira [Pumpdown of FP Chamber] |
||
|---|---|---|---|
| Line 42: | Line 42: | ||
| - Check the box next to “Valve Controls” on the “D2686 Pumping Station” page. | - Check the box next to “Valve Controls” on the “D2686 Pumping Station” page. | ||
| - If the TMP is off and Foreline Valve (FV) is closed, open the Roughing Valve (RV) briefly (2 seconds) by clicking **Open** and observe the behavior of the pressure gauges. If they all decrease at the same rate, again click **Open** to begin rouging out the chambers. | - If the TMP is off and Foreline Valve (FV) is closed, open the Roughing Valve (RV) briefly (2 seconds) by clicking **Open** and observe the behavior of the pressure gauges. If they all decrease at the same rate, again click **Open** to begin rouging out the chambers. | ||
| - | - If the TMP is still on (this could be the case for a short vent period), turn it off and click **Close** | + | - If the TMP is still on (this could be the case for a short vent period), turn it off and close the foreline valve (FV) before doing step 6. |
| - When the BPG reads zero, **Close** RV and **Open** FV. Turn the TMP on if it is not already. When the TMP is “at speed” **Open** the TGV. If the TMP was off before opening the TGV, the chamber pressure may have risen to a point where the TGV closes automatically. If the BPG still reads < 1 Torr, attempt to **Open** the TGV again. | - When the BPG reads zero, **Close** RV and **Open** FV. Turn the TMP on if it is not already. When the TMP is “at speed” **Open** the TGV. If the TMP was off before opening the TGV, the chamber pressure may have risen to a point where the TGV closes automatically. If the BPG still reads < 1 Torr, attempt to **Open** the TGV again. | ||
| - Allow the TMP to pump on the system until the IG reads < 1E-5 Torr. | - Allow the TMP to pump on the system until the IG reads < 1E-5 Torr. | ||
installation_fp_sci.txt · Last modified: 2023/08/18 10:19 by noji
Page Tools
Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Noncommercial-Share Alike 4.0 International
