installation_fp_sci
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installation_fp_sci [2019/07/01 09:05] pereira [Vent focal-plane chamber] |
installation_fp_sci [2019/07/01 09:28] pereira [Vent focal-plane chamber] |
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| * Gently open the manual venting valve until the pressure displayed in the Pirani Gauge (see figure below) increases by ~1 torr every 15 seconds (see figures below) | * Gently open the manual venting valve until the pressure displayed in the Pirani Gauge (see figure below) increases by ~1 torr every 15 seconds (see figures below) | ||
| {{: | {{: | ||
| + | * Make sure that pressure inside the CRDCs and IC detectors (LabView) increase at the same rate than the pressure in the chamber. Otherwise, stop the venting process inmediately. | ||
| * 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 " | * 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 " | ||
| - | * Meanwhile, turn the turbo pump off using PanelMate | + | * Meanwhile, turn the turbo pump off using PanelMate **S800vac**: select box **Turbo pump focal plane detector I260TP** can clock " |
| + | * 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
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