This is topic Century SA Changeover in forum Film Handlers' Forum at Film-Tech Forum ARCHIVE.
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Posted by Dustin Mitchell (Member # 372) on 05-06-2001, 05:07 PM:
Quick, how do you repair a Century SA changeover that's become detached from the wirte the pulls it up? I've already put in an emergency call to our service company, but its good to get two different views.
Posted by Dustin Mitchell (Member # 372) on 05-06-2001, 05:14 PM:
BTW, its a Kelmar changeover, Model No. ECC-35. Just talked with the on call tech, I think I can do it, here goes nothing.
Posted by Randy Stankey (Member # 64) on 05-06-2001, 05:19 PM:
Take out the trap as if you were going to clean the projector. (1 screw)
Take off the light shield as if you were going to put oil into the intermittent. (2 screws)
Use some kind of impliment to slide the dowser/changeover plate up and out of the projector. (You might be able to reach it with your hands if you don' t have fat fingers like me. 
)You will be able to use the projector for now. The changeover just won't work. It'll be open all the time. You'll have to use the console dowser. But that's OK, between shows you can work on this next part. You should be able to get the back together by the time the next show starts.
Use a piece of coathanger wire and make a replacement for that chintzy piece that always breaks. Loop it through the hole in the c/o plate and cut it off so it doesn't get caught on anything. Feed the other end up through the hole in the projector frame and hook it over the bellcrank where the old wire used to go. Again, cut it off so it doesn't get hung up on anything.
Those little screws that hold up the c/o plate are a pain in the arse. The hole in the plate starts to wear out from all the yanking up and down. Sooner or later the hole is too big to hold the screw and it pops out.
If I were you I'd just go around and "fix" them all right now because they will almost certainly all break in the future. I had 17 of these babies. Most of the original fasteners didn' t last a year. We fixed them up with coathanger wire and haven't had a lick of trouble out of them since. That was 4 years ago.
Posted by Dustin Mitchell (Member # 372) on 05-06-2001, 05:48 PM:
Vielen Dnak, Vielen Dank. All fixed and ready to go.
Posted by Ken Layton (Member # 133) on 05-06-2001, 07:21 PM:
The obvious solution is to get rid of that p.o.s. 
Kelmar changeover and replace it with a REAL changeover like a ZIPPER (sold by Wolk).
Posted by Dustin Mitchell (Member # 372) on 05-06-2001, 07:22 PM:
Yes, well that would cost money. Right now my priority is to get a proper rewind bench for our booth, not the POS we have right now that can't even handle 6,000' reels or winding up of trailers.
Posted by Gordon McLeod (Member # 33) on 05-07-2001, 09:28 PM:
Actually I find the Kelmar superior to the zipper by far especially since they seem to use cheaper coils now
Posted by John Eickhof (Member # 323) on 05-08-2001, 11:49 PM:
I agree with gordon!!! The Kelmar is very superior to any changeover out there! Andy modelled it after the old 'Thide' changeovers made in the 30's! Except, he designed it with 'continuous duty rated solenoids'! That's why they wont burn out!!! They are much more positive than the zipper (Essannay) types too! ------------------
John Eickhof President, Chief Slave
Northwest Theatre Equipment Co., Inc.
P.O.Box 258
Wendell, ID. 83355-0258
208-536-5489
email: jeickhof@nteequip.com