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Topic: Changeover wont close??
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Ken Layton
Phenomenal Film Handler
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Posts: 1452
From: Olympia, Wash. USA
Registered: Sep 1999
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posted 07-31-2002 12:50 AM
The Raven Mini-Pec manual is here on the manuals page. We also use the Mini-pec in the Skyline Drive-in theater in Shelton, Wash.The wires coming out of the changeover are: White-COMMON Brown-CLOSE Black-OPEN
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Randy Stankey
Film God
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Posts: 6539
From: Erie, Pennsylvania
Registered: Jun 99
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posted 07-31-2002 01:14 PM
Do check the solenoid(s) to be sure they aren't burned out.Try putting a meter on the connections at the solenoid to see if the automation is "asking" the solenoid to open/close. Then unconnect the lines from the automation and put a continuity/ohm meter on the coils to see if they are open or shorted. Also, you might try removing the unit from the projector and hooking up a fuse/switch combo to the coil connections and test them out with 120v (or whatever the proper voltage is) to see if they work. Do keep the pulses short so as not to burn out the coils, in case they were working in the first place.
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Paul G. Thompson
The Weenie Man
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Posts: 4718
From: Mount Vernon WA USA
Registered: Nov 2000
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posted 07-31-2002 08:01 PM
Oh, those "Zippers" seem to have problems. If the coils are good and the COC and COO voltages are reaching the coil and they still don't work, I would recommend the armature shaft (or plunger, whatever you would like to call it) be cleaned and that the drag ball and spring is properly adjusted. I know this is not politically correct, but I have on occassion removed the ball tension nut and bolt on the top of the douser case and gave it a drop of projector oil now and then. It seems to work for about a year or so before it has to be removed, cleaned, and re-adjusted. While you are at it, make sure that damned Yogo speedometer cable is not jamming in the tube, and the rest of the linkage operates freely.
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