12V fans for the back side of the fridge

Water Heaters, Furnaces, Air Conditioners, Refrigerators, Ranges
nralifer
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Posts: 508
Joined: Fri Sep 30, 2016 11:42 pm

Re: 12V fans for the back side of the fridge

Post by nralifer » Thu Oct 05, 2017 10:30 pm

I got the fans installed tonight!

First, I removed the cover over the fridge roof vent and removed the wire mesh screen that was tacked to the edges of the vent. Then, fished a couple of wires up the chimney using a 2-piece fiberglass rod. Found that the four fans on their frames (pictures posted earlier) fit perfectly down in that vent. I secured the fans, then fabricated a new mesh cover out of some perforated metal sheeting that I had on hand. Secured that cover over the vent opening, then reattached the vent cover to the roof.

Then, went to the sidewall opening and mounted the thermostat to the inside wall just above the top of the sidewall opening. I will probably cover the thermostat with a clear plastic cover of some sort. Gathered up all of the wires and the on/off switch with wire ties. I decided to leave the on/off switch tied up inside the rear of the fridge compartment rather than find a place to mount it inside. We'll see if that setup works OK... if not, I will relocate the switch inside.

I made the fans turn on, then climbed up on a ladder to where I could feel how much air was moving out of the roof vent. VERY nice airflow! Then I went inside to see if I could hear the fans running. VERY low noise level.... just a nice, barely noticeable hummmmm.

I will leave the DIP switches set for the fans to turn on at 85F and see how that does.

Happy with the install!

Here are a few pictures. I'll have to get "after" rooftop pictures later.
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nra1ifer
1987 Avion 34W
Every day is a good day..... some are just better than others!

nralifer
Moderator
Posts: 508
Joined: Fri Sep 30, 2016 11:42 pm

Re: 12V fans for the back side of the fridge

Post by nralifer » Sun Oct 08, 2017 6:14 pm

Here is an "after" picture up on the roof:
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nra1ifer
1987 Avion 34W
Every day is a good day..... some are just better than others!

KYAvion
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Posts: 464
Joined: Sun Sep 18, 2016 12:04 am

Re: 12V fans for the back side of the fridge

Post by KYAvion » Tue Oct 10, 2017 4:39 pm

Looks like a great setup. Well done!
KYAvion
1984 Avion 30R

nralifer
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Posts: 508
Joined: Fri Sep 30, 2016 11:42 pm

Re: 12V fans for the back side of the fridge

Post by nralifer » Tue Oct 10, 2017 5:45 pm

KYAvion wrote:Looks like a great setup. Well done!

Thank you. I think this will be a very practical update that I will like knowing is there, whether anyone else knows or not.

If anyone is interested, here is a chart that came with the thermostat that shows the wiring and the DIP switch settings (Chinese notations, of course.)
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nra1ifer
1987 Avion 34W
Every day is a good day..... some are just better than others!

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