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installation_fp_sci [2023/02/13 12:05] noji Updated descriptions about the FP GHS based upon "S800 Focal Plane Gas Handling System Operation Manual" (v3) provided by Jorge to SN on 2/12/2023. |
installation_fp_sci [2023/02/17 20:09] pereira [Venting FP Chamber] |
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===== Venting FP Chamber ===== | ===== Venting FP Chamber ===== | ||
- Ensure the IG in the Focal Plane Pumping Station is off. This page can be found in FRIB EXP Main → S800 → Vacuum Main (Primary Pages) → Focal Plane. | - Ensure the IG in the Focal Plane Pumping Station is off. This page can be found in FRIB EXP Main → S800 → Vacuum Main (Primary Pages) → Focal Plane. | ||
- | - Return to the “FP_State_Buttons” page and under the D2708 tab click **AUTO**. This will close all valves and allow the system to enter Vent mode. | + | - Return to the “FP_State_Buttons” page and for each of the D2708 and D2703 tabs click **PUMP**. |
- | - Click **VENT**. This will expose the vessels to the Pumping Station. Observe the FPG on the “D2430 Pumping Station” page to ensure the Turbo Pump is not overloaded. | + | - Click **VENT** |
- 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 “D2430 Pumping Station” page on the same axis. | + | - 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. |
- 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. |