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venting_pumping_intermediate_image_box [2024/01/11 10:30] noji [Emptying Detectors] |
venting_pumping_intermediate_image_box [2024/01/11 11:01] noji [Venting the Chamber] |
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- 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. | - 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 **VENT** and then **PUMP** to enter pump mode and leave the system in this state until it is ready to be filled. |
- | * Jorge noted on 2/12/2023 that this step did not work; he reported that when he clicked **PUMP** nothing happened. Instead, he had to “manually” enter the PV name associated with this command and changed from 0 to 1. He speculated that this was most likely due to a CS Studio problem. | + | |
===== Venting the Chamber ===== | ===== Venting the Chamber ===== | ||
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* that the PPACs have been unbiased, | * that the PPACs have been unbiased, | ||
* that this pumping station has been isolated by having the gate valves **D2426 BGV** and **D2436 BGV** closed, and that the IG has been turned off, and | * that this pumping station has been isolated by having the gate valves **D2426 BGV** and **D2436 BGV** closed, and that the IG has been turned off, and | ||
- | * that the turbo pump gate valve TVG is closed. | + | * that the turbo pump gate valve **TVG** is closed. |
+ | |||
+ | The TMP can be turned off at this time. | ||
To vent the chamber: | To vent the chamber: | ||
- | - Monitor | + | - Put the GHS in vent mode by clicking **VENT** (valves #5 and #6 are open), |
+ | - monitor | ||
- close **RV**, the valve to the roughing pump, and | - close **RV**, the valve to the roughing pump, and | ||
- | - open **Vent**. | + | - open **Vent** |
The PPAC pressure S800_GHS: | The PPAC pressure S800_GHS: | ||
- | RBT_BTS32: | + | RBT_BTS32: |
===== Evacuating the Chamber ===== | ===== Evacuating the Chamber ===== | ||