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Topic: Irem rectifier switch
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John Walsh
Film God
Posts: 2490
From: Connecticut, USA, Earth, Milky Way
Registered: Oct 1999
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posted 09-03-2000 09:46 AM
Stan is right; many times those switches are just disconnected.In some booths, that switch was hooked up to bypass the airflow-vane switch inside the lamphouse. The idea was that if the airflow-vane switch got clogged with dust and would not operate, you could still get the lamp on and get the show running. <Heavy disclaimer follows> OF couse, a competent projectionist would never use this bypass switch unless he knew for a fact that the fan(s) were working OK, and the problem was just a clogged switch, would watch the lamp for the entire show remembering that a safety feature had been bypassed, would be there when the show ended to shut it off, and he would clean it out right after that show ended. All of which means that while it was OK to hook up such a switch 23-30 years ago, you would *never,* *ever* do that today with usher-threader-upers.
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