Yours is the first positive experience I have EVER heard of re: LTI. I started selling Christie's to a customer that had over 50% failure on LTI and his was not the only negative comments I've received. As I said, yours is the first positive I have heard. The only negative I have heard on Christie is their cost but cost/hour seems to be the best. Superior Quartz also hasn't had any negative feedback either and are priced competitive to LTI and Perk.

Steve

I e-mailed you a copy of the XHN manual.

The blower could be dirty, but if they have always had the problem, I don't think that alone is it.

There have been slight differences between models, but usually air does not blow straight forward. I blows up through a hole by the front bulb support.

Not to be a pain, but the CFM really has to be measured. I would guess that any CFM about 250 or higher would pass your test, however the manuals states that 400 is required for this lamp in the 2000w configuration. Since this has been an ongoing problem, it might be worth getting a meter. I think you would get good use out of it in the future.

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Anyway, if you have the XH Xetron lamp, they extinguished the bulb by dumping the blower motor. What Xetron had in mind in those days must have been an after thought of a completion of a bottle of 151 (my favorite) rum. (Drats!!!! They don't serve that stuff in North Dakota)

But seriously, another problem could have creeped up. Was the blower motor in the lamphouse changed recently? Who changed it? Was it the right RPM, and was it the right direction? A squirrel cage will blow air even if it is running in the wrong direction. But the amount of air it moves is equivilant to a mouse passing gas! In those lamphouses, it should be equivilant to an elephant passing gas!

When Theater Chain "P" went gunny sack, we got some of the theaters back. In one of the theaters, the little "yellow dog" Strong Lamphouses were burning up xenon lamps by the gross. After scratching my butt for several minutes, I discovered their "Technician" replaced the blower motors (which were rated at 3,000rpm) with blowers rated at 1800rpm, purchased from Jow Blow's Sleezy Hardware & Second Hand Junk Shop for 5 bucks a pop.

Could this have happened to you?

I had three lamps between 3 lamphouses that never reached 500 hours before they failed.

Paul

P.S - When I was in the United States Navy, my Division Officer told me, "Chief, you have lots of class." Now whether that be good or bad, i don't really know... I can hardly wait for Bob Maar (The United States Grunt Corps) to chime in on this one....

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Point noted and agreed but in this case, both Christie and LTI were listed by the original poster as bulbs having these problems...my mistake was bringing up a bulb that was neither of the two...sorry.

Steve

Although it sure sounds like a cfm problem to me.

I have recently purchased a few LTI lamps...and I think they have very good light, and are reasonably priced. The only thing is, they are at around 500 hours (2K's), and so I cannot yet comment on the longevity of the lamps.

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Wes, 800cfm pull through the lamphouse could cause your internal cooling motors to run too fast. It could also rip the sail switch right off the mount and deposite it inside the blower.

It would be just like sticking a blower motor out the car window, and watch it "take off".

Paul

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