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Author Topic: 5000 W average lamp life? Miguel Devriendt Film Handler Posts: 2 From: Roeselare / Belgium Registered: Oct 2006 posted 10-19-2006 01:20 AM                        Hello everybody, I'm new to this forum, and I'm running a 1 year old complex in Belgium. I have a question regarding when U change your lamp bulbs... After how many yours do you guys normally change a 5000 W lamp? (from osram) Do you guys wait till it flickers a little bit or a lot? Greetings, Miguel  |  IP: Logged Monte L Fullmer Film God Posts: 8367 From: Nampa, Idaho, USA Registered: Nov 2004 posted 10-19-2006 01:33 AM                     Welcome to the FORUM. Simple rule of suggested thumb on bulbs: Whatever the warranted hours are on the bulb, times that by 150% and that is when the recommended changeout is for that certain bulb. Thus, I do believe that a 5k bulb is warranted for 900 hours. At 1350 hrs is the recommended replacement for this bulb. I've seen bulbs stay in a lot longer than the recommended period, but the light output has somewhat dimmed, hard striking due to the arc gap has widened after numerous strikings, envelope could be getting discolored, flickering, et.al. ... and the biggest scare is with bulbs have more hours than recommended is that the quartz envelope begins to weaken and chances of bulb explosions are greatly increased during operation. Why of the recommended changeout percentage is to keep the maximum light color output at a certain level (color temperature in Kelvin) so the presentations don't begin to suffer. Hope this helps. good luck and welcome once again - Monte  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 10-19-2006 09:02 AM                        Remember that after the warranty period YOU are on the line for reflector replacement if it blows. For that reason, I get a good look at the bulb at warranty expiration time. A good work light, and a piece of white paper are essential. Louis  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 10-19-2006 10:28 AM                     quote: Louis Bornwasser A good work light, and a piece of white paper are essential. Louis As is a good full face shield if you're sticking your head in there for a look see!!! Safety first on any xenon lamp! Mark  |  IP: Logged Miguel Devriendt Film Handler Posts: 2 From: Roeselare / Belgium Registered: Oct 2006 posted 10-21-2006 08:37 AM                        Thnx for the info guys. And don't worry i always use protective items when i install a lamp . greetings, Miguel  |  IP: Logged

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