The SR500 has 2 additional features which give the user a great deal of control over the roast cycle. With the adjustable fan speed control you can speed up the fan speed for heavier, more dense coffee, to make sure the beans are agitated enough to roast evenly. For green beans with less moisture content, a lower fan speed will keep the temperature high. The fan speed can be adjusted at any time during the cycle. We really like the ability to start a cycle with the fan set to high to dry out the beans. As the coffee loses water and becomes lighter during the roast cycle, turning the fan speed down will allow the roast chamber to retain more heat, speeding up the roasting time- a good feature to prevent over baking really dark roasts. The SR500 also has three temperature settings that can be adjusted any time during the roasting process:
High temp. = 490 degrees
Medium temp. = 455 degrees
Low temp. = 390 degrees
When you purchase this roaster from us, we include a 5 pound sampler of organic and Fair Trade green coffee beans- a $27 value.