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venting_pumping_intermediate_image_box [2017/06/14 10:58] pereira |
venting_pumping_intermediate_image_box [2017/06/14 10:59] pereira [Pumping Intermediate-image chamber] |
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* Verify that Chamber is closed and pressure-relief valve (north side of the chamber) is properly closed (NOTE: sometimes, due to overpressure from dry N2 during the venting procedure, the O-ring in pressure-relief valve flange is moved out of place) | * Verify that Chamber is closed and pressure-relief valve (north side of the chamber) is properly closed (NOTE: sometimes, due to overpressure from dry N2 during the venting procedure, the O-ring in pressure-relief valve flange is moved out of place) | ||
* Verify that PPACs are not biased by opening the [[HV bias|HV GUI]] | * Verify that PPACs are not biased by opening the [[HV bias|HV GUI]] | ||
- | * IMPORTANT: Close manual roughing pump valve {{: | + | * IMPORTANT: Close manual roughing pump valve located near the intermediate-image chamber |
* Insert PPACs/turn on light (Diagnostic Drives PanelMate) and verify condition through sight window on south side of the chamber (be careful no to bump the bullet camera). | * Insert PPACs/turn on light (Diagnostic Drives PanelMate) and verify condition through sight window on south side of the chamber (be careful no to bump the bullet camera). |