FreshRoast SR540 (4.6oz) Home Coffee Roaster + 2 lbs. free coffee.

The manufacturer has made a small change to the top ring of the 540's.  They have a 4 slot locking mechanism to keep the chambers from becoming loose and falling. Below is an image to help. The old chambers will not work on the newer models recently produced with serial numbers (XXX2409XXXX).    This is the new, enlarged and improved model of our favorite line of little workhorse roasters, the FreshRoasts, the most popular home coffee roaster with over 100,000 units sold worldwide. It is sturdier and roasts a tad more, with a much larger roast chamber than its predecessor the SR500. Using four scoops (provided) of green coffee, this roaster will generate about 4.2oz of roasted coffee, which using our recommended coffee to water ratio comes out to 72oz of brewed coffee (or 12 6-oz cups). It is more versatile that its predecessor, the SR500. It has an improved control board. For us the main advantage of this fluid-bed roaster is its ability to roast variable amounts of green coffee from