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Old 02-23-2010, 09:26 PM   #1
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What up with wall packs, the typical 250 watt MH type that all (6) come on for 15 minutes, shut off, then come back on after 3-4 minutes to start the process again?
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Old 02-23-2010, 09:29 PM   #2
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Are they on a photocell? This might be the result of photocell "feedback" if the p.c. is too close or aimed at a light source.
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Old 02-23-2010, 09:33 PM   #3
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Quote:
Originally Posted by Peter D View Post
Are they on a photocell? This might be the result of photocell "feedback" if the p.c. is too close or aimed at a light source.
I agree... cover the PC with tape and see if problem goes away
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Old 02-23-2010, 09:37 PM   #4
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interesting point
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Old 02-23-2010, 10:53 PM   #5
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Old 02-23-2010, 11:04 PM   #6
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Either the photocell is wired backwards or the capacitors are bad.
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Old 02-23-2010, 11:07 PM   #7
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Is this one wallpack, or a whole passel of 'em doing the same thing in unison?
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Old 02-24-2010, 07:35 AM   #8
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six of them
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Old 02-24-2010, 08:42 AM   #9
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Quote:
Originally Posted by BuzzKill View Post
six of them
If they're all dancing to the same tune, then the problem lies with the orchestra.

If it's a photocell, I'd look at that first to see it it's picking up enough light from the fixtures to turn them off.

I'd start looking for a loose connection after that. Power is applied, loose connection heats up and opens.... no current flows, so it cools down and makes connection again.
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