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High Pressure Sodium 70 Watt

(12 posts)
  • Started 5 years ago by rick
  • Latest reply from LH
  • Topic Viewed 968 times

rick
rick
Posts: 214

I know this way out...........but here it is,this lamp is going on and off all the time by it self------plug her in ,, ligh will come on and stay on for 3-4min, then go off..........................any reason someone

Posted 5 years ago
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Lighthouse
Lighthouse
Posts: 13598

How old is the lamp? approximately how many hours has it been on in the past?
Do you have a spare ballast and igniter you could try?

Posted 5 years ago
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PUPPYDOG
PUPPYDOG
Posts: 633

Sounds like the lamp needs changing to me.
Not uncommon for them to do that when they start to fail, it is normally the
ones with an internal ignitor that do that, i presume thats what it is.

Posted 5 years ago
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raphoenix
raphoenix
Posts: 14920

@ALL,
If it is an outside lamp and does this frequently but comes back on, could be photocell picking up headlights or reflections.

Kindest Regards,
Rick P. ♥ :)

Posted 5 years ago
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rick
rick
Posts: 214

Thanks all.....

raphoenix had the right answer,,,,reflextion....I replace the photocell.

Thanks again.....a.sory for such a long time for me to answer,,((( hospital )))

Posted 5 years ago
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raphoenix
raphoenix
Posts: 14920

@rick,
Sorry you were in the hospital and hope you are recovering OK.
I took a good guess at the correct answer because my plant maintenance folks had the problem constantly when the seasons changed and the leaves fell off the nearby trees close to the parking lots.

Kindest Regards,
Rick P.♦:)

Posted 5 years ago
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LH
LH
Posts: 20002

@Rick. Can you please confirm that you are talking about a photocell that detects when it gets dark. And not an IR detector.
merci, me.

Posted 5 years ago
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raphoenix
raphoenix
Posts: 14920

@LH,

Regular old photocell detectors on Street and Parking Lot overhead lights to detect darkness.
You remember the kind.
When they fail, they fail ON so lights remain ON even during day light.
Have to sometime rotate them a bit because of reflections or sun angle during season changes.
Also, sensitivity was sometimes controlled by small shade over photocell opening.
New styles can be IR, but assumed old detector in this problem.

Posted 5 years ago
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LH
LH
Posts: 20002

Thanks Rick, I thought that was what you meant, but wasn't sure. (LSD's if I remember correctly).

Posted 5 years ago
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LH
LH
Posts: 20002

Ah no. It was LDR's I was thinking of.

Posted 5 years ago
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raphoenix
raphoenix
Posts: 14920

@LH,
Kind of like these newer ones.
These new ones have time delay but no spec provided.
http://www.touchandglow.com/product-p/ez-343.htm
-----------
Everything has changed now.
Even in our small town, Utility Co. reads the electric meters with a hand held IR device from a truck.
Was Engr. Mgr. with Landis & Gyr Plant when we started developing this type of utility meter.
Kindest Regards,
Rick P.♦:)

Posted 5 years ago
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LH
LH
Posts: 20002

Looks like they use phototransistors these days.

Posted 5 years ago
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