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venting_pumping_lower-dipole_section_venting_pumping_lower-dipole_section [2020/04/01 21:16]
pereira [Venting analysis-line lower-dipole section]
venting_pumping_lower-dipole_section_venting_pumping_lower-dipole_section [2020/04/01 21:34] (current)
pereira
Line 11: Line 11:
   * Walk to the bottom level of the S3 vault, right downstream of the last two dipoles of the analysis line and verify that the manual vent valve is closed (see picture below). ​   * Walk to the bottom level of the S3 vault, right downstream of the last two dipoles of the analysis line and verify that the manual vent valve is closed (see picture below). ​
   * In PanelMate **S800vac** (page 4), click on "VENT STATUS"​ and select "BEGIN VENTING PROCEDURE"​. The I225GV turbo gate valve will be automatically closed (see figure below), and the automatic vent valve open. However, the venting process won't be complete until you open the manual valve.   * In PanelMate **S800vac** (page 4), click on "VENT STATUS"​ and select "BEGIN VENTING PROCEDURE"​. The I225GV turbo gate valve will be automatically closed (see figure below), and the automatic vent valve open. However, the venting process won't be complete until you open the manual valve.
-  * Walk (again) to the bottom level of the S3 vault, right downstream of the last two dipoles of the analysis line. Locate the I226PG Pirani gauge and ensure that it reads rough-vacuum pressure (few miliTorr).+  * Walk (again) to the bottom level of the S3 vault, right downstream of the last two dipoles of the analysis line. Locate the I226PG Pirani gauge and ensure that it reads few miliTorr.
   * Slowly open the manual valve (see picture below) and verify that the pressure read in I226PG raises slowly.   * Slowly open the manual valve (see picture below) and verify that the pressure read in I226PG raises slowly.
   * After the section is vented (atmospheric pressure) close the manual gate valve.   * After the section is vented (atmospheric pressure) close the manual gate valve.
venting_pumping_lower-dipole_section_venting_pumping_lower-dipole_section.txt ยท Last modified: 2020/04/01 21:34 by pereira