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installation_fp_sci [2017/06/13 12:05] pereira [Closing focal-plane chamber] |
installation_fp_sci [2017/06/13 12:06] pereira [Open focal-plane chamber] |
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==== Open focal-plane chamber ==== | ==== Open focal-plane chamber ==== | ||
- | * After venting the FP chamber, the pressure inside the chamber is slightly above atmospheric due to the dry N2 pumped. Before opening the chamber, it is recommended to vent the extra N2 by " | + | * After venting the FP chamber, the pressure inside the chamber is slightly above atmospheric due to the dry N2 pumped. Before opening the chamber, it is recommended to vent the extra N2 by " |
* Unlock the padlock protecting the power brakers of the switch controls to open the chamber, and press the **START** button {{: | * Unlock the padlock protecting the power brakers of the switch controls to open the chamber, and press the **START** button {{: | ||
* Turn the switch to open the clamps holding the FP chamber. The weight held by the hydraulic piston will increase {{: | * Turn the switch to open the clamps holding the FP chamber. The weight held by the hydraulic piston will increase {{: |