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Old 10-31-2012, 03:18 PM   #11
scottsr123
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Quote:
Originally Posted by jlachesk

Keenly interested in your results. I'm planning a similar mechanism on my chamber to allow for 2 vessels lined up. My concern has been the whole chamber tipping forward when it's pulled out. Securing it to the wall would be an easy fix though, I guess.
I have the same concern, so I added some extra weight in the bottom; two layers of 1/2" plywood. If it still feels like it might tip, I have the option, where I'm putting it, to anchor to the floor. When I got the shelf done, I pulled it all the way out and leaned on it pretty hard (mainly to test the slides); seemed very stable. I'll keep you posted on how it goes when I test with a full fermenter.

 
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Old 10-31-2012, 03:32 PM   #12
rekoob
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Great idea with the slide out tray. Well done.

 
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Old 11-03-2012, 07:12 PM   #13
scottsr123
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Finished the inside layer of insulation, caulked and taped all the seams. Also added a second layer to the doors and made some latches. Ready to install the wiring and controls next.


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Old 11-03-2012, 07:37 PM   #14
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Quote:
Originally Posted by TrainSafe View Post
That slide out tray is the bomb. Great idea.
I was thinking the same thing. Great idea!
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Old 11-04-2012, 02:25 AM   #15
scottsr123
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Started installing the wiring this evening.

Controller mounted on top.

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Decided to add a piece of plywood to attach the electrical box, and leave room to add a light and/or fan later. Installed the light fixture for my heat source.


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Here's what I'm using as a heat source.


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Old 11-04-2012, 04:11 AM   #16
rockinmarty
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love it
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Old 11-04-2012, 11:10 PM   #17
scottsr123
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Got it all together and in it's home.



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Took the door off the mini-fridge, added some weather stripping to the front and butted against the opening. I'm using a couple of cheap tie-down straps to keep it snug against the wall of the chamber.


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I put about 6 gallons of warm water in my fermenter and tested out the pull-out tray. The glides deflect downward a little, but the chamber does not tip forward at all. Glides function smoothly with the weight.


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Time to test it out. I dropped the temperature probe into the fermenter full of water. At 5:15pm, 37.2 degrees C. I've got it set for 20 C; will see how long it takes.


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Old 11-05-2012, 02:46 PM   #18
scottsr123
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Next morning, down to 19.5 C, heat on.



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I watched it this morning, and it got down to 19.4 (set for 20) before the temp started rising again. I'll be very happy if I can maintain temp to +\- .6 degree! I'm also going to pick up a cheap fan to put inside to keep the air circulating.

 
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Old 11-06-2012, 01:16 PM   #19
crane
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If you put a fan in there it will tighten up the control. You are experiencing overshoot. Since you don't have a fan yet there was a temp gradient between the minifridge and the temp probe. Once the temp probe got down to 20C the minifridge was colder at that point. After the minifridge turned off the temp equalized in the chamber somewhat and got the probe down to 19.4. In my chamber I have a fan blowing across the heat exchanger so I get very even temps and doesn't drop more than 0.2F below the setpoint when I have the to probe attached to the side of the fermentor.

Now the next test to run once you get your fan in there is how low can it go? Can you hit lagering temps?

 
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Old 11-06-2012, 08:58 PM   #20
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Since you have the conical on a slide, you probably could have gotten away with the chamber being shorter... Looks great though! I need to get to work on one.
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