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Topic: Christie SLC exhaust question
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Brad Miller
Administrator
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Posts: 17775
From: Plano, TX (36.2 miles NW of Rockwall)
Registered: May 99
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posted 06-17-2002 06:15 PM
At least on the CA21 automation, there is a provision to have a sensor inside the bulb chamber that will stop the automation and sound the alarm if it does not light. You *could* always have your tech rewire that one switch in series through the failsafe, so that if the airflow switch is not closed, the system will think that the failsafes have dropped and stop the show and sound the alarm. The automation would also kill the lamp as well as raise the house lights. Off topic, but sort-of related, I've set up a couple of private screening rooms that did not have any form of automation by wiring the lamphouse's interlock through a generic microswitch failsafe. The failsafe didn't read cues or stop the projector motor or really do anything, but if during the show the takeup belt broke, it would kill the xenon. That way there was no need to worry if the takeup was functioning. If the picture was on screen, the film was taking up, and it didn't require purchasing an automation system. ![](http://www.film-tech.com/ubb/smile.gif)
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