HOME      GALLERY      HELP      SEARCH FORUM      LOGIN      REGISTER     

Login with username, password and session length
+  Gallery of Lights
|-+  Lanterns/Fixtures
| |-+  Modern
| | |-+  Time-delay thermal photocell shutting off in the DARK?
« previous next »
  • Print
Pages: [1]

Author Topic: Time-delay thermal photocell shutting off in the DARK?  (Read 5164 times)

Offline GEsoftwhite100watts

  • Lighting enthusiast
  • **
  • Posts: 217
  • Old florescents forever!
Time-delay thermal photocell shutting off in the DARK?
« on: March 12, 2018, 02:36:17 AM »
Yep...is this an actual failure mode?

Have a circa '93 Fisher-Pierce photocell that is doing this; it turns the light off after the 2 minutes (light was on a switch), even in the dark!  It used to be a very insensitive PC so I highly, highly, highly doubt it was "seeing its own light", plus it didn't seem to cycle on and off. 

I tried a new bulb, so I know it wasn't a cycling bulb either...

Thoughts? 
Logged
Lighting, vintage electrical, tube radios, old stereos, wooden boats, excavators, glass insulators, and many others.

Offline Mike

  • Professional lighting engineer
  • *****
  • Posts: 1226
  • This Image Brought to You by: McCann Lighting Co.
    • Mike McCann's Flickr Page
Re: Time-delay thermal photocell shutting off in the DARK?
« Reply #1 on: March 18, 2018, 08:50:55 PM »
I had a Fisher Pierce so this too and knew of a light near me that did that. Don't know how to fix it. It's just junk now unfortunately. You could rip the guts out and connect the two smaller prongs together to make a shorting cap.
Logged
Check out my gallery on the Lighting-Gallery.net!

Offline lightingfan8902

  • Lighting enthusiast
  • **
  • Posts: 110
  • Power Distributor: CenterPoint Energy 120V 60Hz
Re: Time-delay thermal photocell shutting off in the DARK?
« Reply #2 on: March 23, 2018, 07:41:13 AM »
Could be a defected circuit board, or the photoeye (photoresistor) isn't the right resistance value for use, is my guess.
Logged
Save the Cooper OVWs!! Don't them down by crap LED fixtures!!!

  • Print
Pages: [1]
« previous next »
+  Gallery of Lights
|-+  Lanterns/Fixtures
| |-+  Modern
| | |-+  Time-delay thermal photocell shutting off in the DARK?
 


  • SMF 2.0.15 | SMF © 2017, Simple Machines
  • XHTML
  • RSS
  • WAP2