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installation_fp_sci [2018/04/11 16:11]
pereira [Pumping focal-plane chamber]
installation_fp_sci [2018/04/11 16:26] (current)
pereira [Pumping focal-plane chamber]
Line 48: Line 48:
   * Open PanelMate **S800vac** and go to page 07. Make sure that the venting valve **I260VV** is closed (see last step of the [[#Vent focal-plane chamber|venting process]] described above)   * Open PanelMate **S800vac** and go to page 07. Make sure that the venting valve **I260VV** is closed (see last step of the [[#Vent focal-plane chamber|venting process]] described above)
   * Select window **PUMPDOWN STATUS** and click on button **START PUMPDOWN**. The **PUMPDOWN STATUS** and **VENT STATUS** windows should display "​PUMPDOWN IN PROGRESS"​   * Select window **PUMPDOWN STATUS** and click on button **START PUMPDOWN**. The **PUMPDOWN STATUS** and **VENT STATUS** windows should display "​PUMPDOWN IN PROGRESS"​
 +       * The vent valve **I260VV** and foreline valve **I260FV** will be automatically closed
        * After the rough valve **I260RV** is automatically open, the mechanical pump will start pumping.        * After the rough valve **I260RV** is automatically open, the mechanical pump will start pumping.
        * The pressures in the mechanical pump (from **I259PG**) and beam chamber (from **I261PG**) will jump momentarily to very high values. They should go down slowly after few seconds (otherwise, the chamber is not properly closed).        * The pressures in the mechanical pump (from **I259PG**) and beam chamber (from **I261PG**) will jump momentarily to very high values. They should go down slowly after few seconds (otherwise, the chamber is not properly closed).
installation_fp_sci.txt ยท Last modified: 2018/04/11 16:26 by pereira