The Fresh Roast SR500 has more built in functionality compared to the original Plus 8 coffee roaster model, and is a bit larger of a version, roasting twice the capacity of the Plus 8 - ~4.3 ounces of raw beans, and includes a simple digital time display, plus 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. A Fan Speed Control has been added that allows the finest tuning of the roast. The Fan Speed Control allows adjustments of + or - 10%.
Starting the roast, the beans are at their heaviest, the fan speed can be turned up to keep the beans fluid and give an even roast. As the beans become lighter, the fan speed can be turned down and keep the beans from chipping.
The maximum time to set the control is 9.9 minutes. At any point during the roast sequence you can add 6 seconds every time you tap the button. Time can be subtracted using the same method. The timer can be overridden by tapping the “Cool” button, the roaster will go into the “Cool” mode for 3 minutes.