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» Film-Tech Forum ARCHIVE   » Operations   » Digital Cinema Forum   » Moving color wheel from DP-3000 to 32B (Page 3)

 
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Author Topic: Moving color wheel from DP-3000 to 32B
Rosario Drago
Film Handler

Posts: 8
From: mazara del vallo, sicilia, italia, europa
Registered: May 2015


 - posted 07-07-2015 03:06 PM      Profile for Rosario Drago   Email Rosario Drago   Send New Private Message       Edit/Delete Post 
I can send you some pictures by email.

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Dave Macaulay
Film God

Posts: 2321
From: Toronto, Canada
Registered: Apr 2001


 - posted 07-07-2015 04:15 PM      Profile for Dave Macaulay   Email Dave Macaulay   Send New Private Message       Edit/Delete Post 
Steve: I've had several of the CP2000 hose disconnects fail. The bulkhead mounted ones through the bottom of the upper chassis. On disconnect, the connector's insides shoot out and down to get lost amongst the stuff below. Without a replacement, there's a tiny spring and plunger you have to find and fit back in or you have zero coolant flow. These parts are the valve in that end but also push open the valve in the hose end.
Possibly UV attacking the guts of the connector?

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Pete Naples
Phenomenal Film Handler

Posts: 1565
From: Dunfermline, Scotland
Registered: Feb 2001


 - posted 07-08-2015 03:23 PM      Profile for Pete Naples   Email Pete Naples   Send New Private Message       Edit/Delete Post 
Dave, ditto.

I found a source of the connectors here on the UK. Christie only supply the complete cooling system here. Circa £500

CPC, the manufacturer of the connectors don't rate that type under UV, the type used in series 2 are OK though.

I have never seen them fail on a Barco or Kinoton, I guess the sealed LE keeps the worst of the UV to itself.

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Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12814
From: Annapolis, MD
Registered: Dec 1999


 - posted 07-08-2015 04:11 PM      Profile for Steve Guttag   Email Steve Guttag   Send New Private Message       Edit/Delete Post 
Are they the same CPC connectors as used in the Barco series 1s? I honestly don't recall the specific connectors Christie uses. We have the ones for the Barco (both male/female) in both series 1 and series 2 style. The series 2 connectors are definitely the way to go, if possible. They are better on several fronts.

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Marco Giustini
Film God

Posts: 2713
From: Reading, UK
Registered: Nov 2007


 - posted 07-08-2015 05:23 PM      Profile for Marco Giustini   Email Marco Giustini   Send New Private Message       Edit/Delete Post 
In theory the UV is removed just after the lamphouse. There shouldn't be any UV in the light engine. At least not a great amount.

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Pete Naples
Phenomenal Film Handler

Posts: 1565
From: Dunfermline, Scotland
Registered: Feb 2001


 - posted 07-09-2015 03:58 PM      Profile for Pete Naples   Email Pete Naples   Send New Private Message       Edit/Delete Post 
Steve, yes.

Marco, in theory perhaps. But one only has to look at any paintwork or wiring in the LE compartment after a few years to see that theory and practice do not match.

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99


 - posted 07-10-2015 03:21 PM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
The UV band pass filters actually fade at a much higher rate than all the other filters in a D-Cinema projector. You probably need to replace them.... Especially that very first one.

Mark

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Marco Giustini
Film God

Posts: 2713
From: Reading, UK
Registered: Nov 2007


 - posted 07-10-2015 05:06 PM      Profile for Marco Giustini   Email Marco Giustini   Send New Private Message       Edit/Delete Post 
That's interesting.
Wouldn't that be listed on the,say, D service schedule?

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99


 - posted 07-11-2015 05:25 PM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
You guys don't remember any of that from film days? IR bandpass filters in ORC lampjopuses had to be replaced every several years. You could actually see the circle where the light from the lamp went through and faded them. Not many people actually did replace them, but digital isn't going to be any different in that regard and it may be more critical to longevity of the light engine... In digital after 5 or 6 years I can see the same thing about to occur.

Mark

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Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12814
From: Annapolis, MD
Registered: Dec 1999


 - posted 07-11-2015 07:56 PM      Profile for Steve Guttag   Email Steve Guttag   Send New Private Message       Edit/Delete Post 
I'd suspect that IR is going to be somewhat less on digital owing to the reflectors used also allow IR to pass through rather than being reflected forward. I noted on Kinoton lamphouses in the film days that IR filters held up MUCH better than conventional lamphouse filters.

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