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Johnson Controls A19AAT-2C Freezer Temperature Controller (D132)
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- Great for turning a chest freezer into a keg refrigerator
- Easy to set up and use
- Plug unit into wall and then run the sensor into your freezer
- Very economical
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Use this handy controller to regulate the temperature in your freezer between 20 - 80F . Great for turning a chest freezer into a keg refrigerator. Strictly a mechanical thermostat for cooling only, it is simple to use and economical. It operates with a gas filled probe on a 6-foot capillary tube. When the gas contracts or expands in the probe, it triggers a mechanical device inside the control which turns the power on or off. There is no probe temperature readout on the dial, so keeping a thermometer inside the refrigerator is highly recommended to keep track of the actual temperature. On most refrigerators, the controller will allow a usable range of 37 to 80 F, while on freezers, the controller will be able to reach its full 20 to 80 F range. Features: Made of stainless steel. Adjustable with the turn of a knob. No drilling necessary. Plug unit into wall and then run the sensor into your freezer. Male and female plug in one. Specs: Temperature dimensions: 4 3/8" H x 2 1/8" W x 1 1/2" D. Cord dimensions: 6'. Remote sensor bulb: 5 1/2"W. Remote sensor bulb capillary tube: 6'. Temperature range: 20 - 80F. Voltage: 120 VAC.
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The one thing that I didn't do correctly (that in hindsight was fairly obvious) was that initially I left the gas filled sensor inside the freezer and ran the remaining 6 feet of copper tubing outside the freezer to the controller. I realized that was probably dumb as it would leave a significant surface area exposed to the outside temp that could skew the thermostat settings. OK, simple enough to fix. I just coiled the copper tubing back up, secured it to the inside of the freezer and mounted the controller to the outside leaving only a few inches of exposed copper which I insulated. Overkill? Maybe, but for that absurdly difficult change it's no longer a problem to with which to concern myself.
So if you are looking at one of these to make a freezer into a fridge, it was simple and so far (2 months as of this review) it's worked without any fiddling needed. I'm happy. Unrelated to the actual product but related to its use. I have had a freezer and "converted" fridge running though Kill-a-Watt meters for about a month. The Frigidaire freezer takes about 45 watts per hour to run at the factory set freezer temp. The modded fridge is set with the Johnson controller to 38˚F and run about 15 watts per hour.
The capillary tube is very thin so it doesn't effect the seal of the door. It might take some creativity mounting of the controller and running of the capillary tube. It does come with a chain to hang it or keyhole slots on the back. I have a heavy duty magnetic coat hook that I stuck on the side of the refrigerator and hung the control unit from it.
It has the variable temperature control allowing you to set it at your ideal temperature for whatever beverages you are cooling.
If you try to use a refrigerator for beer, a fridge will only go down to about 35 degrees.
Last year i tried a control box from Ebay to run the freezer like a refrigerator, messed with it everyday- froze my keg. Not happy
. This one is the ticket, Lake Powell is a real world test, Temps in the 100's direct sun on the chest freezer and this product held up to the challenge.