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Author Topic: overheating Barco? Mike Blakesley Film God Posts: 12767 From: Forsyth, Montana Registered: Jun 99 posted 07-16-2012 11:40 AM                        That would be the case. The weird thing with the NEC machines is, they put out a couple of thousand BTUs worth of heat out of their back end, so you can have a nice cool room but the machine itself heats it up. That's the only thing I don't like about the NEC. In fact I'm surprised they haven't figured out some sort of add-on kit to capture all that heat and direct it outside. Think of it, NEC Marketing Dept: You could take $100 worth of sheet metal and sell it for $4200.  |  IP: Logged Joris Springer Film Handler Posts: 83 From: Almere, Flevoland, The Netherlands Registered: Feb 2007 posted 07-16-2012 02:19 PM                     The problem is, it does not even have to be the heat, what does the projector say? We have a similair problem with Barco's shutting off the lamp in the middle of the shows and the one thing we know for sure is that it is not a heating problem. (DP2K 15C, 19B and 12C, so 3 different type of machines with that same problem, the 19B has according to Barco problem with a metal plate in the machine but that plate was already removed)  |  IP: Logged Monte L Fullmer Film God Posts: 8367 From: Nampa, Idaho, USA Registered: Nov 2004 posted 07-16-2012 04:09 PM                     quote: Mike Blakesley heat out of their back end And what's interesting is that with the NEC Series 1 units, air is DRAWN in though that rear panel - a changeout filter is right there along with the two on the non operating side. This one oddity with the units in switching exhaust flow for Series change, is a go-figure thing. -Monte  |  IP: Logged Bill Enos Film God Posts: 2081 From: Richmond, Virginia, USA Registered: Apr 2000 posted 07-17-2012 12:31 AM                     Last summer our a/c was out for 9 days, by the 4th day it was 95F in the booth. On the 6th day we ran an event on the Barco DP100 with no issues. We have a roof exhaust fan and a 750 cfm centrifugal blower on the Barco exhaust opening. The projector was on 4 hrs. Temps were checked frequently and none came even close to the allowable maximum. Even with high ambient temps, enough air flow can keep the internals at acceptable levels.  |  IP: Logged Melanie Loggins Expert Film Handler Posts: 154 From: Wayne, NE, USA Registered: Aug 2011 posted 07-17-2012 03:46 PM                        So, an update: the log indicated that the ambient temp and the lamp temp were high. And further investigation on the booth revealed that a member of my local theatre group, who have been in the building rehearsing for their play this weekend, had closed one of the air conditioning vents. (There are not enough expletives to describe my reaction to that. And I hadn't looked before the movie because, why would I have reason to think one of the vents was closed?) So both air conditioning vent covers have been removed, you know, to prevent them being closed and stuff, and a classy fan-and-cardboard system has been built into the windows of the booth to help circulate air. I got through the rest of the weekend without incident. And, on a further note, a rep from Barco (hi Jim!) confirmed for us that it's a booth problem, not a projector problem. The projector was doing what it's supposed to do.  |  IP: Logged Ron Loggins Film Handler Posts: 7 From: Wayne, NE, USA Registered: Jul 2011 posted 07-31-2012 08:08 PM                        Following up what Melanie posted... We now suspect that the fan motor that exhausts the projector may have overheated. While we don't have a "smoking gun" or burned out motor, nothing else makes sense. Also, the fan (I don't have a make or model) is basically a bathroom fan positioned about 4" above the projector on the roof. My question to the group is: does anybody vent their projectors with a "bathroom type" fan? If this is a bad idea, what do you suggest? A quick google came up with only 1 solution, the ventilation system made by MagnaTech. Are there any other fans you would suggest? Thanks in advance!  |  IP: Logged Adam Fraser Master Film Handler Posts: 499 From: Houghton Lake, MI, USA Registered: Dec 2001 posted 07-31-2012 08:29 PM                        We use a commercial squirrel cage 1000+ CFM bathroom fan from Grainger. http://www.grainger.com/Grainger/BROAN-Ventilator-4TR63 We have 2 exhaust fans installed (one for backup), the other one is a higher CFM but I don't have the model number handy. The other one has been running every night since 1980 and has never quit. This one was installed just in case while we were installing our NEC. Most places seem to use stack fans right above the projector and those may also work great, just have never tried one.  |  IP: Logged Frank Cox Film God Posts: 2234 From: Melville Saskatchewan Canada Registered: Apr 2011 posted 07-31-2012 08:35 PM                        I have an exhaust fan screwed to the ceiling in my projection room that looks similar to this: It used to be hooked up to my lamphouse with a duct when I still had film, but now it's just open-sided. It exhausts through a duct that goes up through the ceiling and out the roof. I just use it in the winter, though. In the summer I run an air conditioner that hangs on the wall of the projection room.  |  IP: Logged Joe Elliott Master Film Handler Posts: 497 From: Port Orange, Fl USA Registered: Oct 2006 posted 07-31-2012 08:38 PM                     A lot of theaters use what is called a pancake fan. You want 450 CFM for a smaller projector, and above 600 for a larger one. http://www.continentalfan.com/ecatalog.php?fantype=industrial&fid=57&s=In-Line+Fans These are quiet, and are installed inside, out of the weather.  |  IP: Logged Sam D. Chavez Film God Posts: 2153 From: Martinez, CA USA Registered: Aug 2003 posted 07-31-2012 11:31 PM                       I've used Fan Tech which are very similar to the CFM above and quite inexpensive. You need an 8 inch version. It sits right on top of the projector and can be attached to it with a thin ribbon of sheet metal and a couple of 8 inch hose clamps. They are very powerful at 500 CFM and pretty quiet if you use a heavy duty 8 inch flexible duct to wherever it exits the room. You can find them at Grainger or Amazon. I have several of these in service with Barco for 4 years or so with zero problems. PM me if you want some help. Who pray tell, told you to use a bathroom fan?  |  IP: Logged Melanie Loggins Expert Film Handler Posts: 154 From: Wayne, NE, USA Registered: Aug 2011 posted 08-01-2012 10:04 AM                        Sam, the bathroom fan was at the recommendation of the person who set up our equipment. The same person who didn't start us off with 7.1 even though it was a matter of one cable and then when we wanted to upgrade came and "upgraded" us but I knew it sounded wrong and it turned out he installed the wrong cable, the same one who told us to turn off the server every night, the same one wouldn't return phone calls or email from me even though I'm the one who runs the theatre so I had to get a man to call him, the same one who .... the list goes on and on. A year and a half into this and we're still figuring out stuff he did wrong. This time, though, it's not just a matter of annoyance but of potentially damaging our equipment and/or alienating customers.  |  IP: Logged Michael Putlack Expert Film Handler Posts: 187 From: Fort Collins, Colorado Registered: Sep 2011 posted 08-01-2012 02:43 PM                        Melanie, it sounds like this guy deserves to be added to the industry deadbeats thread...  |  IP: Logged Ron Funderburg Jedi Master Film Handler Posts: 814 From: Chickasha, Oklahoma, USA Registered: Nov 2007 posted 08-01-2012 02:54 PM                        Don't use the bugger again. You don't have to take that kind of Sh*t!  |  IP: Logged Tony Bandiera Jr Film God Posts: 3067 From: Moreland Idaho Registered: Apr 2004 posted 08-01-2012 04:09 PM                     Melanie, I agree with Michael P.... you should tell us who that "installer" is so no one else gets screwed over by that clown.  |  IP: Logged Marco Giustini Film God Posts: 2713 From: Reading, UK Registered: Nov 2007 posted 08-01-2012 05:18 PM                     I'm particularly impressed by quote: Melanie Loggins the same one wouldn't return phone calls or email from me even though I'm the one who runs the theatre so I had to get a man to call him  |  IP: Logged

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