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installation_fp_sci [2017/03/06 12:28]
pereira [Vent focal-plane chamber] |
installation_fp_sci [2017/03/06 12:30]
pereira [Open focal-plane chamber] |
| ==== Open focal-plane chamber ==== | ==== Open focal-plane chamber ==== |
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| - After venting the FP chamber, there might still be some pressure differencial. This can be corrected by "forcing" the chamber flange {{:wiki:screwdriver-flange.jpg?350}} | * 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 "forcing" the chamber flange with e.g. a screwdriver {{:wiki:screwdriver-flange.jpg?350}} |
| - Unlock the padlock protecting the power brakers of the switch controls to open the chamber, and press the **START** button {{:wiki:padlock-note.jpg?350|Padlock}} | * Unlock the padlock protecting the power brakers of the switch controls to open the chamber, and press the **START** button {{:wiki:padlock-note.jpg?350|Padlock}} |
| - Turn the switch to open the clamps holding the FP chamber. The weight held by the hydraulic piston will increase {{:wiki:switch-clamps.jpg?250|Switch clamps}} {{:wiki:clamps.jpg?400|Clamps holding FP chamber}} {{:wiki:scale.jpg?350|Scale FP chamber}} | * Turn the switch to open the clamps holding the FP chamber. The weight held by the hydraulic piston will increase {{:wiki:switch-clamps.jpg?250|Switch clamps}} {{:wiki:clamps.jpg?400|Clamps holding FP chamber}} {{:wiki:scale.jpg?350|Scale FP chamber}} |
| - Turn on the switch to activate the motor opening the chamber. It takes about 10 minutes to get the chamber totally opened {{:wiki:fp-chamber-motor.jpg?250|Motor switch to open FP chamber}} | * Turn on the switch to activate the motor opening the chamber. It takes about 10 minutes to get the chamber totally opened {{:wiki:fp-chamber-motor.jpg?250|Motor switch to open FP chamber}} |
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