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Old 11-18-2012, 08:34 PM   #1
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Default Fan wiring?

Hey guys. Building a fridge and am going to wire my fan in parallel with the compressor so it only fires when cooling. Is that what y'all do or are there any creative wiring tricks out there?

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Old 11-19-2012, 03:16 AM   #2
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What fan are you referring to? Evaporator, condenser, or external fan? For mine, I've added a small computer power supply fan that I have wired for constant on (to keep the box temp consistent), and switch all refrigerator systems on/off by controller.

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Old 11-19-2012, 08:40 PM   #3
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It's a small CPU fan for circulating air inside the fridge. I don't want it running constantly, I don't think. Does it make a huge difference?

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Old 11-19-2012, 09:04 PM   #4
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I just bought this cycle timer from ram meter.com. I can control the time on and time off by adjusting the 2 dials. This is a wiring diagram for the 8 pin base plate I picked up at the local electronics store.

image-1146774733.jpg   image-2926649371.jpg  
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Old 11-19-2012, 09:26 PM   #5
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I've got my temp controller power an outlet. Keezer plugs into outlet. I took an old cell-phone charger (I think it is 6 volts or something) and spliced it into a little 12v computer squirrel cage fan. The fan cuts on whenever the compressor cuts on and moves some air around. Works great for me.

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Old 11-19-2012, 09:35 PM   #6
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Why not just leave it running 24/7?

It takes almost zero power, not to mention its probably not good to start wiring other electronics in parallel into your condenser circuit.

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Old 11-19-2012, 09:49 PM   #7
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Quote:
Originally Posted by FuzzeWuzze View Post
Why not just leave it running 24/7?

It takes almost zero power, not to mention its probably not good to start wiring other electronics in parallel into your condenser circuit.
Agree. Don't see any disadvantage to constant on recirculation.....I use a 110V PC fan, but draws almost nothing.
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Old 11-19-2012, 09:55 PM   #8
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All of the commercial coolers run the evaporator fan 100% of the time. My bev-Air cooler does that to keep the whole unit at a consistent temp.

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Old 11-19-2012, 10:07 PM   #9
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[QUOTE=crazyirishman34;4604440]All of the commercial coolers run the evaporator fan 100% of the time. My bev-Air cooler does that to keep the whole unit at a consistent temp.[/QUOTE

My TRUE GDM-49 does the same in a stock setup, but I power the entire unit off/on via controller. Huge electric savings to only have the PC fan running and does a great job.

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Old 11-19-2012, 11:06 PM   #10
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[quote=501irishred;4604470]

Quote:
Originally Posted by crazyirishman34 View Post
All of the commercial coolers run the evaporator fan 100% of the time. My bev-Air cooler does that to keep the whole unit at a consistent temp.[/QUOTE

My TRUE GDM-49 does the same in a stock setup, but I power the entire unit off/on via controller. Huge electric savings to only have the PC fan running and does a great job.
Yea, OP should just wire the fan in so its always on. The benefits you gain from it always circulating the air will let you reduce how many times your compressor has to cycle on and off.
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