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installation_fp_sci [2023/02/17 20:45] pereira [Pumpdown of FP Chamber] |
installation_fp_sci [2023/03/07 08:27] pereira [Venting FP Chamber] |
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- Once the FPG bottoms out, check the box next to “Valve Controls”, | - Once the FPG bottoms out, check the box next to “Valve Controls”, | ||
- If the system will only be vented for a short time, leave the TMP on, otherwise turn it off. | - If the system will only be vented for a short time, leave the TMP on, otherwise turn it off. | ||
- | - Plot PT1, PT2, and PT3 from the “GHS_FP_Main” page as well as BPG from the “D2686 Pumping Station” page on the same axis. | + | - Plot PT1 (S800_GHS: |
- Briefly (~2 seconds) open the vent valve by clicking **Open** next to the valve labeled “Vent” then click **Close**. Check that all the pressures are increasing at the same rate. | - Briefly (~2 seconds) open the vent valve by clicking **Open** next to the valve labeled “Vent” then click **Close**. Check that all the pressures are increasing at the same rate. | ||
- Again, open the vent valve and observe the pressure for 30 seconds to ensure the pressures are increasing at the same rate among all four gauges. If a difference of > 1 Torr is observed between any two gauges, click **Close** on the vent valve. | - Again, open the vent valve and observe the pressure for 30 seconds to ensure the pressures are increasing at the same rate among all four gauges. If a difference of > 1 Torr is observed between any two gauges, click **Close** on the vent valve. |