Controleo3 - Breville BVX450 mini oven results - Page 1
Forum section: electronics / general

author: jnz
author_rank: Frequent Contributor
timestamp: July 26, 2022, 06:18:16 pm
content: I built a toaster oven to Controleo3 PCB oven. No one I could find had started with such an expensive oven.The Breville BVX450 Mini Oven (retail $150, ebay $70 used once). I chose this over the "normal" Black and Decker $40 units for a couple reasons including:- If I'm going to dump 2 days and $300 into an oven, I kinda don't want to start with the absolute cheapest part on the market.- Dual top and dual bottom quartz heating elements. The Black and Deckers are single element top and bottom, 10L and 1100W, the Breville is dual top and bottom, 12L and 1800W. I was concerned about 1800W (15amps) popping breakers or internal fuse, but the Controleo3 never sets the top and bottom to 100%. The boost unit (resistive coil) is only 350W and all said and done I'll be under 1800W.NOTE: The Breville Mini Oven is 120V and top/bottom elements are wired in series. I expect this from 240V units and was surprised to see it on a 120V part.Other than that some general notes:- The build quality looked better than the Black and Decker units. Granted, these things are all made cheaply, but I liked that the glass door gap was small on the flat door of the BVX450. There is a modern B&D unit that has a curved door I saw two people struggling with. Interestingly the Breville has a ton of screws and assembles in an odd way (back panel is the first thing to come off!) And this seems almost like a failure to make it as cheap as possible.- The door could be removed completely for assembly, which I recommend. It's not easy to do, but can be done. Left side first to remove, last to install.- Worth mentioning, that this unit has a removable full length drip tray. I cut all but 25mm off of it and glued it in place with the RTV.- The kit included PCB tray does not fit the wider body.- Kit instructions are really bad. And seem like a first draft. Dude really needs to do a re-write.- I added $30 of extra Floor and Tunnel Shield II from Amazon.- The floor and tunnel shield is a little difficult for a 13yo helper to work with. That's why it looks like... like a 13yo did it on the left side. It actually was quite difficult to do as one sheet on the top directly under the quartz elements. I don't recommend doing it all in pieces as large as possible.And finally...- This oven scores a 100% on the training scale. (7% POWER, 32S INERTIA, 161S INSULATION). This is the only 120V part I've seen do this with pictures I could find, I'm sure there are more, but this will work nicely I'm sure.... Now I need some stencils.

author: thm_w
author_rank: Super Contributor
timestamp: July 26, 2022, 08:48:12 pm
content: It looks like you added some white insulation under the aluminum shielding on the sides?

author: jnz
author_rank: Frequent Contributor
timestamp: July 26, 2022, 09:39:32 pm
content: Quote from: thm_w on July 26, 2022, 08:48:12 pmThat is the "Floor and Tunnel Shield II". It has that layer of white attached to it. It's really quite difficult to get under the quartz heaters. If I was doing this over again, I would look into removing those first step. I didn't because the quartz tube appears to be floating relative to the coil inside, I'm not actually sure you can remove them once they're installed, at least not in one piece.