Bringing a third world coffee roaster up to code.
I was getting increasingly uncomfortable about the safety of my friend Phil's
Hot Top coffee roaster.
I had already done an extensive repair after a chaff fire, and the chaff seemed to build up in dangerous places very quickly. So I persuaded him to look for another coffee roaster.
The distributor from whom he buys his green coffee beans had imported 14 roasters made in Peru. Previously they had sold one. However the unit is not up to gas an electrical codes, and the first owner blew himself and his garage up as the unit is supplied without a regulator and the purchaser was not told he needed one.
The vendor was clueless about codes and safety and was not happy when I told him the unit did not meet US/Minnesots gas and electrical codes, and he should not be retailing them like that.
The gas fitting was crude and attached with a cutting hose clamp to a serrated nipple on the side. So I took off the nipple to make sure I got the correct threads to make this connection.
The next problem was the electrical connection to the Cyclotron exhaust, which could easily deliver a nasty electric shock and would give Rickster conniptions.
The other problem was that the exhaust was supposed to be vertical, but the manufacturer had made no provision what ever for mounting it, and it is too top heavy to stand. The vendor uses it with the exhaust laid in its side, which is very crude.
So a few weeks ago I custom built a clamping base for the exhaust out of steel scraps from my shop. I only had to purchase a 3" piece pf steel pipe and a steel hinge which I cut down and welded to the clams I made from the steel pipe. I cut the base with my plasma cutter and made the other parts with my Jet band saw. I welded it together. The left clam is welded to the base, the right hinged. It clamps with the large bolt and is lock nutted so it does not move. The jaws have foam pads on the inside.
I installed it all today and made the electrical connections safe. The support of the exhaust is solid. The chaff door opens between the clams.
Here is a view of the total set up.
It roasts coffee superbly.
The nice deal is that I get excellent free coffee.
Although the cost is high, due to the low cost of green beans compared to roasted, we calculated pay back to be 2 years given the amount of roasting done.
I thoroughly enjoyed thinking this project through and doing the custom fabrication.
Here is a
link to the complete album.