Differences

This shows you the differences between two versions of the page.

--- installation_fp_sci [2017/03/06 12:18]
pereira [Vent focal-plane chamber]
+++ installation_fp_sci [2017/03/06 12:19]
pereira [Vent focal-plane chamber]
@@ Line 7: / Line 7: @@
   - Ensure that the FP ion gauge (I264IG) is off (see details [[vacuum_control|here]])
   - Open PanelMate and select **S800vac** file in directory \\exp\files\control\ncsdata\General\Qt\Templates. Go to page 07, click on the **VENT STATUS** window and begin the venting procedure. The **VENT VALVE I260VV** window will turn red and display "OPEN". The pressure should remain constant because the manual venting valve is still closed
-  - Gently open the manual venting valve until the pressure displayed in the Pirani Gauge (see figure below) increases by ~4 torr/min     {{:wiki:fp-pirani.jpg?350|FP chamber manual venting valve}}
+  - Gently open the manual venting valve until the pressure displayed in the Pirani Gauge (see figure below) increases by ~1 torr every 15 seconds
+{{:wiki:fp-pirani.jpg?350|FP chamber manual venting valve}}
   - Wait until the chamber is vented (few hours). The **I261PG** Pirani Gauge should read atmospheric pressure. The window **VENT STATUS** in PanelMate should display "VENT VALVE OPEN". The window **PUMPDOWN STATUS** should display "PUMPDOWN STOPPED"

S800 Documentation