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#205106 - 01/30/12 11:38 PM Re: T8 lamps swirling.....why? [Re: Merlin]
Merlin Offline
Member

Registered: 01/27/04
Posts: 149
Loc: NW Indiana
I spoke with the Phillips lighting rep today. He is as baffled as myself and the supply house manager. Rep suggested that I remove lamps, power off fixtures, and reinstall the lamps. He thought that since I installed them in "hot" fixtures that could casue an issue. The supply house has ordered a new box of lamps and 4 new ballasts at request of rep, to try and correct the issue. I will see tomorrow what happens.

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#205183 - 02/04/12 09:20 AM Re: T8 lamps swirling.....why? [Re: Merlin]
Merlin Offline
Member

Registered: 01/27/04
Posts: 149
Loc: NW Indiana
Well, the problem is resolved. I simply replaced the lamps with some new ones from a different case. We actually changed the color of lamps as well. The problem lamps were 841's and I now have 735's in there. Magically....no problems now.

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#205195 - 02/04/12 08:33 PM Re: T8 lamps swirling.....why? [Re: Merlin]
Tesla Offline
Member

Registered: 06/16/04
Posts: 768
Loc: Sacramento, CA
http://hyperphysics.phy-astr.gsu.edu/hbase/waves/standw.html


You've made your first real-world acquaintance with standing wave resonance.

That's what causes swirls in air columns/ mercury vapor tubes/ fluorescent lights.

Cheers.
_________________________
Tesla

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#205197 - 02/04/12 09:14 PM Re: T8 lamps swirling.....why? [Re: jdevlin]
waymag Offline
Member

Registered: 01/13/02
Posts: 68
Loc: dallas, texas, USA
May sound funny but I have had this same thing happen and turned the lamp around and the swirl stopped.

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