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Author Topic: Orc 1000 questions Ed Inman Expert Film Handler Posts: 103 From: Jackson, Mississippi USA Registered: Jul 2004 posted 06-15-2015 10:42 PM                        As for running the fan independently on an ORC 1000 I believe if you temporarily remove the fuse down by the main power cable you can turn the main back on and the fan will run to cool down the unit without firing the lamp.  |  IP: Logged Erik Lallucci Film Handler Posts: 31 From: Webster, NY / USA Registered: Feb 2013 posted 07-06-2015 07:35 PM                     Thanks for all the help on this everyone. I was able to locate a LTIX-700W-HS (700 watt lamp) and installed it. Before I fire it up I want to make sure I have the fuses correct and the amperage correct. Since this lamp is rated a 37a I am assuming I want to start it set around 37? As for the fuses, the manual specs are a little confusing. I have gathered that it takes a .5 and a 20 amp fuse, but I could be wrong and not sure which one is which? Since this is my first run with the orc 1000, I want to make sure I am doing things correctly. Thanks for all the help.  |  IP: Logged Bill Duelly Film Handler Posts: 92 From: Roselle Park, NJ Registered: Feb 2006 posted 07-10-2015 03:52 PM                     On my unit, the fuse by the on/off switch is: 1/4 Amp - 250 V  |  IP: Logged Steve McAndrew Film Handler Posts: 95 From: North Yorkshire, UK Registered: May 2015 posted 01-18-2016 02:01 PM                     Does anyone have any more information about the addition of a lamp on/off switch. As others have mentioned, removing the fuse will prevent the lamp striking. Is the switch just added in series with the fuse holder or is there more to it? Thanks for your help  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 01-20-2016 03:29 PM                     Throw the switch and run the first time you "fire" that up.  |  IP: Logged Mitchell Dvoskin Phenomenal Film Handler Posts: 1869 From: West Milford, NJ, USA Registered: Jan 2001 posted 01-25-2016 08:01 AM                     > Does anyone have any more information about the addition of a lamp on/off switch. If your goal is to keep the fan on to cool the bulb after it is turned off, that would be the hard way to do it. I can not speak to all versions of the ORC1000, but the few I have worked on have a 110v AC fan. You really want to rewire the fan onto it's own switch fed directly from the AC, tapped in after the fuse and before the main switch.  |  IP: Logged Jim Henk Master Film Handler Posts: 364 From: San Diego, CA Registered: Feb 2006 posted 01-26-2016 09:02 PM                     So I guess this brings up a question. Orcon designed the system to shut the fan off with the bulb. Did they ever say that there might be a design reason for that? Might they have counted on an overhead main exhaust fan being on for another 20 minutes or so? Maybe something about the housing that they felt the bulb might be harmed somehow by too much close-quarter rapid cooling after the bulb being freshly turned off? I dunno. I'm just askin'...  |  IP: Logged Tony Bandiera Jr Film God Posts: 3067 From: Moreland Idaho Registered: Apr 2004 posted 01-27-2016 06:07 PM                     The ORC 1000 was (supposedly) originally designed as a "searchlight" for military vehicles. So the fan off spec may be from the original mil spec...or maybe it is because ORC wasn't the sharpest outfit when it came to design.  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 01-28-2016 08:26 AM                        Mounted below the cannon on large Army tank. I cannot believe they had any level of reliability. Best to be working for the enemy.  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 01-28-2016 09:30 AM                     I understood it was first designed for use on 16mm advertising loop projectors that ran unattended at fairs and trade shows  |  IP: Logged Mitchell Dvoskin Phenomenal Film Handler Posts: 1869 From: West Milford, NJ, USA Registered: Jan 2001 posted 01-28-2016 09:33 AM                     The Optical Radiation Corporation (later Xetron) was located about 20 miles from my home at that time in Cedar Knolls NJ. I co-owned a few theatres back then, and they would sell me equipment and supplies directly. I spoke with the support staff in person on several occasions. I'm not sure where the "spotlight" urban myth came from, but the ORC1000 was designed for small automated theatres that were popping up at the time. The reason they told me for shutting down the fan with the bulb is that they felt that at 1000 watts or less, the bulb did not need cooling after it was shut off. What they forgot is that by putting the solid state components for the power supply inside the lamphouse, they would need cooling. Solid state components tend not to like to go from extremes of heat to cool, and tend to fail more frequently when they do.  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 01-28-2016 10:25 AM                     FYI ORC did design and build search lights for the military The cermax line of encapsulated lamps were originally for aircraft search light (which is why they are still available They also developed the original Skytracker which had multiple heads mounted on a motorized plate that panned and light up the sky for events (Strong continues to make them) as does Phoebus and LP Associates  |  IP: Logged John Eickhof Jedi Master Film Handler Posts: 588 From: Wendell, ID USA Registered: Jan 2000 posted 01-28-2016 09:22 PM                        ORC first built the X2500 a 1600 watt xenon spotlight for use on Army gunships (helicopters) during the late 1960s. The lamphouse was quite compact with selsyn motors controlling aim via joysticks. It used a seperate 400Hz power supply to power the lamp and a solenoid dowser. The M-1000 was designed for 16mm film projection and the story has it one was placed behind a 35mm projector and decent (for the time) light was produced. Ron Offerman was a salesman demonstrating the M-1000 in 1970 in Sioux City, he reported that the M-1000 may be suitable to replace a 1KW carbon arc lamp. ORC removed the two piece dichroic heat filters from the nose and installed a dichroic beam spreader to make the beam suitable for 35mm and they were off and running. They also built in the power supply initially for compactness. I installed 2 of the first M-1000s for 35mm at a theatre I worked at in Lake Tahoe, ( model was XM-1000 serials 024 & 025) they were sold by John Dalk of NTS in San Francisco. The early ones had a small 4" intake and exhaust fans and according to the installation instructions they did not require external exhaust! Well, after many fried triac boards and diodes, ORC sent out a fan retrofit to install a 6" exhaust fan on top and a high volume 4" fan on the intake, a few months later, they replaced the original triac board with a dual scr board and recommended external exhaust. We were running 2000ft reels with changeovers, the early bulbs were terrible! Igniting every 18 minutes raised hell and bulb failures were many! So we added exhaust and would light the lamps and leave them on for the duration of the show using the dowsers. Finally a few years later we installed 6000ft reels and lit the lamps for each reel, plus the quality of the bulbs increased. ORC then revised the X-2500 to the X2500C and with a 220V 60Hz single phase power supply, thousands were sold, the X2500C won an academy award for the new xenon lamp design.Plus, all there was in the lamphouse was a cooling fan and the igniter thus saving the power supply from all the heat. Ironically, they kept the reflector location the same requiring a beam spreader! NTS sold thousands and they were also used in the Jerry Lewis Theatres in a Simplex package from NTS. We ended up with them in all 4 of the Northshore Theatres. It didn't take me long to become a self taught expert in the damned things! I have an early XM-1000 and a X-2500 in my museum collection. Not to mention the early ORC manuals that were inept to put it mildly!  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 01-30-2016 07:36 PM                     Once when I was at ORC I saw them building CHP Helicopter Search Lights. Those were very interesting. Also fully remote controllable, but very compact. The supply was 400hz switching type and this was in the mid 1980's. Pretty high tech for ORC even then. Mark  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 02-02-2016 09:47 PM                        Interesting. The 1600 watt bulb will run directly off ship power: 28 vdc.  |  IP: Logged

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