Operating instructions

7
During the roasting process you can change any of these four parameters: Target Time, Target Tem-
perature, Fan Speed, and Heating Element Power. These changes are temporarily memorized by the roast-
er. This “set” of adjustments and changes is called a “Profile.” When the roast is over and the cooling cycle
has completed, the display will show “Stor.” At this time you may choose to save the Profile so that this
same roast can be repeated again in the future.
To the right of the display are five buttons that control KN-8828B-2K (buttons do not illuminate).
At various times a message will appear in the display to alert you:
CHAF: The chaff tray needs to be emptied before continuing.
CONTROL FUNCTIONS
MESSAGES
ROAST PARAMETER CHANGES
POWER - START The largest button at the top of the display
controls both “POWER” and “START.” Only one of these two
choices will be illuminated in the LCD display at any given time
so the button is used for this dual function.
EJECT - This is always available during a roast. Use it to im-
mediately stop the roasting process and send the beans into the
cooling tray.
SELECT - The circular arrow is used to cycle through the various
parameters that can be adjusted. Adjustable parameters are Target
Time, Target Temperature, Fan Speed and Heating Element Power.
CHEVRON ARROWS - The arrows are used to change each of the
four parameters. For example, select “Fan Speed” using the SELECT
Arrow then use the CHEVRON arrows to change the fan speed higher
or lower. It works the same for the other three parameters.
Stor - If you choose you may store into non-volatile memory the roast
which just took place
AUTO - The pre-programmed, factory default, automatic roasting mode.
18:00 and 420 F. are the default values for AUTO mode.
COOL - The roaster is cooling itself down before it can proceed.
Ad - These are roasting profile memory locations where you can store profiles
for future use. The three areas are named Ad1, Ad2, and Ad3.
P H - The roaster is preheating in preparation to roast coffee.
FACTORY PROGRAMMED SAFETY
There are three separate safety points programmed into the KN-8828B-2K:
1) If the KN-8828B-2K displays a temperature of 356F (180 C) within the first 8:30 of roasting time,
the unit will alert you with warning beeps. If you do not press a button (other than EJECT) within 20
seconds, the beans will be automatically ejected. Pressing a button continues the roast as programmed.
2) When the KN-8828B-2K displays a temperature of 395 F (or 202 C), the roaster will again alert
you with warning beeps. If you do not press a button (other than EJECT) within 20 seconds, the beans will
be automatically ejected. Pressing a button continues the roast as programmed.
3) When the KN-8828B-2K displays a temperature of 428 F (220 C), the beans will be immediately
ejected. There is no override for this safety function.