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installation_fp_sci [2019/07/01 09:05]
pereira [Vent focal-plane chamber]
installation_fp_sci [2019/07/01 09:08]
pereira [Vent focal-plane chamber]
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 {{:wiki:fp-pirani.jpg?350|FP chamber manual venting valve}}  {{:wiki:fp-pirani.jpg?350|FP chamber manual venting valve}} 
   * Wait until the chamber is vented (few hours). The **I261PG** Pirani Gauge should read slightly above atmospheric pressure (due to the dry N2 flow pumped to the chamber). The window **VENT STATUS** in PanelMate should display "VENT VALVE OPEN". The window **PUMPDOWN STATUS** should display "PUMPDOWN STOPPED"   * Wait until the chamber is vented (few hours). The **I261PG** Pirani Gauge should read slightly above atmospheric pressure (due to the dry N2 flow pumped to the chamber). The window **VENT STATUS** in PanelMate should display "VENT VALVE OPEN". The window **PUMPDOWN STATUS** should display "PUMPDOWN STOPPED"
-  * Meanwhile, turn the turbo pump off using PanelMate and select **S800vac**+  * Meanwhile, turn the turbo pump off using PanelMate **S800vac**: select box **Turbo pump focal plane detector I260TP** can clock "Stop". It will take several minutes to fully stop (you can check the turbo-pump speed in box **I260TP SPEED**, or using EPICS channel **I260TP_FR_RD**) 
 +  * When the Turbo pump is fully stopped, switch off the chiller located near the S800 electronics rack
   * When the chamber is fully vented, select **VENT STATUS** and click **STOP VENTING PROCEDURE**. This will automatically close the vent valve **I260VV**   * When the chamber is fully vented, select **VENT STATUS** and click **STOP VENTING PROCEDURE**. This will automatically close the vent valve **I260VV**
   * Close the manual vent valve   * Close the manual vent valve
installation_fp_sci.txt · Last modified: 2023/08/18 10:19 by noji