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Post by turbokinetic on Sept 1, 2024 14:21:19 GMT
Here is some info for anyone taking the thermostat out of your Monitor Top fridge or any of the related GE models up until they changed the thermostat design in the late 40's.
The manual states not to remove the bellows part from the thermostat body because it will over-expand and be damaged.
This came from someone who got a Monitor Top before he found out about our forum or group and accidentally took the bellows out.
This shows the results and my attempt to fix it.
Sincerely,
David
https://youtu.be/N6cCCuJU_GI
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Post by ckfan on Sept 3, 2024 17:37:23 GMT
You say attempt to fix it, but it looks like you were successful. Good job! Where did that cooling well system come from?
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Post by turbokinetic on Sept 3, 2024 19:05:23 GMT
You say attempt to fix it, but it looks like you were successful. Good job! Where did that cooling well system come from? Yep, I was successful thankfully. The true test will be if it holds up and the bellows doesn't crack over time. There is a concern that metal fatigue could set in. As for the cold well machine, that is made up of a condensing unit from a scrapped Ideal Slider soft drink vending machine. It was too rusty to be used in a restoration. The actual well part is something I built. It is double-walled copper pipe. The annulus between the inner and outer walls is essentially the evaporator coil. In side the well is a small submersible pump and a PVC tube. The pump and tube ensure a flowing stream of solution without a temperature gradient. This makes sure the thermostat under test and the calibrated thermometer probe are exposed to the same temperature. The main reason I built this was to re-calibrate thermostats when we have an actual specification on them. Makes it almost easy without guesswork nor having to wait on a fridge cabinet to stabilize. If you set the thermostat up as per the GE manual, it will just 'work' without fuss. Almost like it was designed to LOL! |
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marko
7 Cubic Foot
Posts: 159
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Post by marko on Sept 3, 2024 20:49:56 GMT
The actual well part is something I built. It is double-walled copper pipe. The annulus between the inner and outer walls is essentially the evaporator A very small chiller! I have built similar using various techniques, an old air drier, coaxial rolls of copper, and lastly, a commercially built plate chiller (by far the best).
<script src="moz-extension://926e06ca-f7ce-44b6-a276-6d532bb80e82/js/app.js" type="text/javascript"></script> |
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Post by ckfan on Sept 4, 2024 14:21:48 GMT
That’s so cool! Great to take scrap parts and make something very useful out of them. I’m sure it allows you to dial in the thermostats just right.
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