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SCVJeff · 02-02-2011, 02:56 AM

I also bout eh the blue thing but decided I didn't really like the wat it was routing air, so I found a 3"x3"x1" DC fan the moves WAY more air then the blue thing (to the point that I installed a diode in-line to slow it down a tad). Here it is in the Pic below, but have since turned it sideways to blow across the center-to-right portion of the heatsink since that's where all the cold is radiated.

On my 1200 I have full-time +12V on the light, and it is a switched ground. So I pulled power from the ground side of the lamp to further slow the fan, and anytime I open the door my +12V goes away at the fan, shutting it down so cold air isn't blown out (just like a residential fridge).

62Morgan · 02-02-2011, 02:28 PM

Thanks for all who took time to reply. The sketch gives it clarity...
The PEX is semi-white and looks good & sanitary (aka hospital clean). Just what you want in a food storage appliance.

To ease the sliding onto the fins....Be sure to notch the leading & trailing ends of the cuts in the tube, thus:

jeepfreak · 02-02-2011, 03:09 PM

Firedoc, please reread my post as I explain how I mounted mine. And the fans run as soon as you turn on the fridge whether the door is open or not.

NHRA225 · 02-03-2011, 04:53 PM

Just received one of these fans yesterday and the first observation I had was the flimsy mount with the alligator clip. Thanks for the pvc mounting idea and the detailed drawings. I will mount mine tonight and teather it to the light switch. Looks easy enough.

Lakeman1 · 02-04-2011, 09:57 AM

Will PVC work?

NHRA225 · 02-04-2011, 07:32 PM

I met to write in my post that I'm going to use PEX pipe- alot softer than PVC.

bjsheldon · 02-18-2011, 01:34 PM

OK People HELP! I have a 12v computer fan and want to install it like the rest of you; however, I have 4 wires coming into the frig. 2 go to the light and 2 go to the thermocouple attached to the cooling fins. It appears to me each has its own circuit and the light is off when the doors are closed, Thus, connecting to the light I don't think will work. any suggestions??? Norcold model 1201 LRIM, 4 door.
John, Brenda and the 2 dogs
I did some more checking. One side of the light is hot ALL the time; door open or closed; refg on or off. Thus the door switch must switch the neg side but it goes thru the main on-off switch first. HELP. mine looks like scv jeff & dr4film inside

bjsheldon · 02-18-2011, 02:26 PM

Quote:

Originally Posted by Dr4Film

These interior circulating fans are the best addition you can make to you RV frig. I have had them installed a couple of years now. We Full-Time so they are running 24/7 They are wired into the 12 volt DC "Always Hot" lug of the light/thermistor connector when the frig is turned on. The ground is established with the Alligator clip that holds the fan to the fins. They have nothing to do with the light going on or off. These fans are NOT 120 volt AC converted to 12 volt DC. The poster that stated that fact earlier is totally wrong.

The rear drain tube that travels down the backside of the frig is to drain the melted ice that may build up on the cooling fins inside the frig. There is generally a drain cup at the bottom rear of the frig to capture the water however, some units the drain cup is not used and the hose has been extended which travels down to underneath the coach. Mine does and the tube has been open since I have owned it. However, I am en-route to Florida and before I left, I went through the bottom of my coach to install Mud-Dauber screens in all of my drain tubes. That included the front and rear A/C drains, the Frig drain, the fresh water drain and the hot and cold water drains. I also installed Mud-Dauber screens on the exterior frig vent to prevent them from getting into the rear of the Norcold cavity.

Photos of the interior frig fans below.

Dr4Film ----- Richard.

Sir:
See my help post at the end of this thread. It looks like I have the same Norclod 1201 fridg as you. What wire did you connect where??? I have a Red and a bk/w w stripe in the connector going to the light.
Thanks a bunch
John

David K · 02-18-2011, 04:11 PM

I wired my fans by attaching to the "hot" side of the light ---- that way DC is being given to the fan. When I ground the fan to the fins inside of the refigerator, then the fan comes on and it does not care if the door to the refrigerator is open or close. I used an alligator clip for the ground wire and when I want the fan to run, I attach it to the cooling fins at the back of the refrigerator -- when I want it off, I detach the clip -- just make sure that the clip is not grounded to something else when you want the fan off.

SCVJeff · 02-18-2011, 09:13 PM

A mentioned, you can get ground from the cooling fins. If your fan has no ground clip, you can find one at Radio Shack or use a paper clip as it draws very little current.

For the +12, you can grab EITHER side of the light. One will give you fan all the time, and the other will run the fan only when the door is closed; your choice.

Just be aware that when the fridge is OFF, that the fan will run as long as the house batteries are ON.

bjsheldon · 02-19-2011, 05:27 AM

For those interested this is the dual fan discribed in posts above. $4.79 + free shipping.

Item title: PC Computer 3.5" Hard Drive 2 Cooling Cooler Fan
Web Address: http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=180546886474
Item number: 180546886474
Seller User ID: mydashop
Your total: AU $4.79

David K · 02-19-2011, 08:22 PM

You can do a search on Ebay with the following search string " 3.5" hard drive 2 cooling cooler fan PC computer" and it will return results with some listings for US dollaars --- $4.19 each and free shipping. The item comes from Taiwan and I have purchased mine from there --- pretty fast shipping as I recall -- about 8 days.