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KN-8828B's basic design is firmly established in the dependability and
solid design of its predecessors. Some of these time-proven features
include: a large cooling tray with forced air cooling quickly ends the roast
and removes heat from the beans - critical function for best taste; a large glass viewing window allows viewing of the beans during the
roast; extremely quiet operation makes it easy to monitor the cracks of the
roasting beans; heavy duty components and high quality electronics for dependable
operation; stainless steel roasting drum and outer surfaces; 250 grams rated capacity (green coffee); replaceable filter to help
remove particulate matter and lessen smoke production.
The newly designed "KN-8828B" now gives the user complete manual
control of all parameters while still allowing those new to coffee
roasting easy the ability to successfully roast from the very beginning. Simply plug the roaster in and press the "POWER/START" button three
times and the roasting process begins. Add the beans when the machine
"beeps" and you can either allow it to roast and then eject the beans
automatically or you can manually end the roast at any time.
As you advance your knowledge of coffee roasting, the
various parameters of the roast can be easily controlled without
complicated programming. While the roast progresses use
the simple keypad to change various functions...
START/POWER
- The largest button at the top of the control panel is for 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 immediately 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.
ARROWS - The Up and Down arrows
are used to change each of the four adjustable parameters explained
below. If at any time a parameter is at its extreme (highest or lowest
possible setting) that arrow will not be available.
The control panel uses an easy-to-read LCD display to give the user
all the information needed to successfully complete a roast. By
glancing at the four simple display areas the current process is easily
understood...
TIME
- before beginning you can program in the length of time for the
roast. This is called the "Target Time." During the roast the time
display will countdown the remaining time in the roast. The remaining time can now be modified by adding or subtracting
time using the up and down arrows. At any point in the roast,
if the time display reaches 00:00 the KN-8828B will automatically eject
the beans. The total roast time (time elapsed + time remaining) cannot
exceed 25 minutes.
TEMPERATURE - During the roast, the temperature
display can show two different settings. If the Select arrow is used
to choose the temperature the display becomes encircled. This is the Target Temperature which, if reached, will
automatically eject the beans. When the display is not encircled it is the current temperature in the roasting chamber. The
Target Temperature can be changed at any time during the roast up to
the maximum of 428 F. If the Target Temperature is lowered to the point
that it equals the current temperature the beans will be ejected.
Main Fan Speed: Five speeds are available, each of four bars represent 25% of the fan's speed. When no bars are showing the fan is off.
Heating Element Power. There are eleven selectable heating
levels. Each bar represents 10% of the heating element’s power. When no
bars are selected the heating element is off.
SAVING ROAST PARAMETERS
- Having to remember a roast with all those possible changes would
be nearly impossible, so to allow you to repeat a roast there are three
memory areas. At the end of the roast which you have modified using any
of the above changes you are presented with "Stor" in the display. At
that time you can easily save the completed roast including all the changes you have made. Up to three roasts can
be saved in this manner. A stored roasting profile can be easily
selected at the start of a roast, and that Profile can be changed
during the roast as described above, and then saved again at the end of
the process.
SAFETY - Among various safety features the chaff tray must be removed from the machine for emptying or the next roast cannot
begin, even if the machine has been unplugged. When bean temperature reaches 414 F, the machine will signal the user
by beeping for thirty seconds. During
this thirty-second warning period the the "Enter"
button must be pressed. If the button is not pressed the machine will automatically
eject the beans into the cooling tray. Additionally, no roast can
progress past 431 degrees. At that point the beans will be ejected
regardless of reaming time or Target Temperature.
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