FINALLY! My fermentation chiller - Page 5

431brew · 02-09-2010, 08:12 AM

Quote:

Originally Posted by deathweed

Now to just add the relay and hook it to the compressor and.... I start smelling smoke.... A test i ran at least a dozen times, but now it doesn't work. I look around and see this:
Attachment 5556

The neg battery terminal has cooked through. I hope I didn't fry my thermostat... I look around and everything seems to be wired correctly, the only difference between my successful test run and now is the addition to the cooling circuit and the relay, and those are on a different power supply than the thermostat... I think I am done for the day, I will scratch my head over this one tomorrow. Now to spend some time with the neglected feeling SWMBO.

So what caused the cooking? Maybe I missed it in the thread somewhere. Everything still going well? No sparks, fires, electrocutions? This is a cool project, and I may get the courage to try it someday. I am a little afraid to do my own electrical work on something like this where you have to modify parts. Changed a light fixture last weekend and was kind of expecting to see smoke afterwards.

**Dr_Deathweed** · 02-12-2010, 08:56 PM

I had poor contacts and had not installed any kind of safty fuse, so I ended up drawing a lot of current across the terminal. Unfortunatly this also fried the termostat, so i just got a new one and have been using batteries in them for the last... however long it has been since I have started this thread. As far as all the other electrical stuff, its on relays, so I dont have to worry about frying anything else.

allaboutduncan · 02-17-2011, 08:40 PM

What size was your mini-fridge? Looking to do something similar and want to use a 1.7, if I can. Thanks.