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venting_pumping_intermediate_image_box [2024/01/11 10:12] noji [Venting the Chamber] |
venting_pumping_intermediate_image_box [2024/01/11 10:30] noji [Emptying Detectors] |
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===== Emptying Detectors ===== | ===== Emptying Detectors ===== | ||
- Set “PPAC Setpoint” to 0 Torr. | - Set “PPAC Setpoint” to 0 Torr. | ||
- | - Click **EMPTY** on the “GHS_II-PPAC_Main” page to begin pumping out the gas quickly. | + | - Click **EMPTY** on the “GHS_II-PPAC_Main” page to open valves #3 and #4 which will allow for pumping out the gas quickly. |
- | - When “PPAC Pressure” reads < 0.1 Torr, click **MAN** and then **AUTO**. This will release the remaining gas into the diagnostics box. | + | - When “PPAC Pressure” reads < 0.1 Torr, turn off IG and click **MAN** and then **AUTO**. This will open valve #6 to release the remaining gas into the diagnostics box. |
- Monitor D2340 pumping station and ensure the TMP stays on and TGV remains open. If not, contact the Vacuum Operation group. | - Monitor D2340 pumping station and ensure the TMP stays on and TGV remains open. If not, contact the Vacuum Operation group. | ||
- Valves #1-5 should be closed and valve #6 should remain open. From this state click PUMP to enter pump mode and leave the system in this state until it is ready to be filled. | - Valves #1-5 should be closed and valve #6 should remain open. From this state click PUMP to enter pump mode and leave the system in this state until it is ready to be filled. | ||
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From the S800 Main Vacuum page, go to the Intermediate Image - RBT_BTS32 D2430 Pumping Station page, and ensure | From the S800 Main Vacuum page, go to the Intermediate Image - RBT_BTS32 D2430 Pumping Station page, and ensure | ||
* that the PPACs have been unbiased, | * that the PPACs have been unbiased, | ||
- | * that the gate valves **D2426 BGV** and **D2436 BGV** are closed, and that the IG is off, and | + | * that this pumping station has been isolated by having |
* that the turbo pump gate valve TVG is closed. | * that the turbo pump gate valve TVG is closed. | ||