Wisconsin Parts Database Instructions and Discussion Team/Group > MICHIGAN
> Motors and tools
> Remove
> New
> Without Warranty
> Hottop programmable (b/p) coffee roaster free shipping
Hottop programmable (b/p) coffee roaster free shipping
The "B" model is designed to roast beans by time - You will have full control over total roast time, target roasting temperature to end, fan speed, and heater power. These can be easily changed during the roast. The combination of variables that are subject to programming changes are virtually infinite (You should have some basic knowledge of the roasting process to know when to change fan speed and/or heater power in order to control the roast for best results. However, if you are new to roasting just use the default values until you get more comfortable with the process.)
The "P" model is designed to roast beans by temperature - A roasting program consists of eight segments. Each segment consists of an amount of time, temperature, and fan speed. You would predetermine these parameters for each segment and the machine will control the temperature. You would have full control of segments when programming the roast, but would only be able to change the target temperature of each segment once the roast begins.
Most experienced roasters have found that the "B" model allows you to change roasting parameters at anytime for the ultimate roasting control. The "P" model is for roasters that want to have a self-made profile that can be easily repeated, or that want to roast a particular type of coffee bean the same way every time.
Below are two links that may further explain the differences concerning the "Dynamic Roasting Control" for both the P and B models:
Comparing the P and B models and Choosing one over the other.
The silver lining is that if you decide that you got the wrong model, you can just swap out the control panel. There is no need to exchange the whole machine, and we will be happy to help you with that, or any other issue that you may have
Roaster features on the Programmable models:
* Computer controlled roasting for accuracy and repeatability.
* Fully automatic roasting and cooling.
* User can end roast at any time. Just press the "Eject" button.
* Capacity: 8 to 11 oz per roasting, optimal 9 oz .
* Roast cycle: 17 to 23 minutes.
* External cooling tray with agitation arm and cooling fan. Beans cool in 4 to 5 minutes.
* Built-in smoke reduction system. Washable & replaceable filters.
* Stainless steel cover and drum.
* Large window gives good view of the beans during roasting.
* Audible signaling of roast progress.
* Height: 14 inch, Width: 10 inch, Depth: 19 inch
* Voltage: available in 110-120 or 220-240 volts (contact us for details)
* Warranty: One year for parts labor. 30-days, money-back, satisfaction guarantee.
* Temperature, time, and fan speed can be programmed and monitored at any time
*Can store (and re-store) three roast profiles
* Auto mode allows simple operation without programming, just like older models
*Digital display & measurements
* Introduced (2/2007). Most sophisticated roaster at this price level
* Nine user-programmable, eight-segment roast profiles
*Temperature, time, and fan speed can be programmed and monitored at any time
*Auto mode allows simple operation without programming, just like older models
*Colorful LCD screen with full graphics and gages
This large, professional roaster is designed and manufactured in Taiwan by Chang Hue Industrial Corp, which also designs and manufactures vertical and horizontal rotisseries, food dehydrators and an electronic-temperature-control, PC plastic, pourover drip coffee maker. The roaster is distributed and sold worldwide.
The full-color 24 page (8.5" by 11") Owner's Manual is complete and well written with plenty of directions for using, cleaning and maintaining your roaster. You can download a PDF copy here. You can also easily troubleshoot electrical, mechanical and roasting/coffee problems by using the colorful guide.
The Newest Hottop - the Programmable Basic
The latest-release KN-8828B's design is firmly established on the dependability and solid reputation of its predecessors. Some of these time-proven features include: a) The large, external cooling tray with forced air, which quickly cools the beans. The heat is removed away from the hot drum after the roast is stopped -a critical function for best taste. b) The large glass viewing window, which allows viewing of the beans during the roast. c) Extremely quiet operation makes it easy to hear the "cracks" and monitor the roasting. d) Heavy duty components and high quality electronics for dependable operation e) Stainless steel roasting drum and outer surfaces. f) Nine ounces (250 grams) rated capacity (green coffee). g) Replaceable filters to help remove particulate matter and lessen smoke production.
The newly designed KN-8828B model gives the user complete manual control of all parameters while still allowing those new to coffee roasting to easily and successfully roast from the very beginning. Simply plug the roaster in, press the "POWER/START" button three times and the roasting process begins. Add the beans when the machine beeps ready and you can allow it to roast and then eject the beans automatically or you can manually end the roast at any time.
As the user advances in her/his knowledge of coffee roasting, the various roasting parameters can be easily controlled without complicated programming. While the roast progresses the user can use the simple keypad to change various functions as can be seen below:
1 - 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 that the button can be easily used for its dual function.
2 - EJECT - This is always available during a roast. Use it to immediately stop the roasting process and send the beans into the cooling tray.
3 - 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.
4 & 5 - CHEVRON 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:
1 - Time - Before the start of a roast, the user can program in the length of time. This is called the Target Time. During the roast the time display will countdown the remaining time in the roast. If the Select arrow is used to choose the time display it becomes encircled (as shown above). The remaining time can now be modified by adding or subtracting time using the Chevron 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 25:00 minutes.
2 - Temperature - During the roast, the temperature display can show two different parameters. If the Select arrow is used to choose the temperature display it becomes encircled. This is the Target Temperature which, if reached, will automatically eject the beans. When the display is not encircled (as shown above) 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.
3 - Main Fan Speed - Five speeds are available. Each of the four bars represent 25% of the fan's speed. When no bars are showing the fan is off.
4 - Heating Element Power - Eleven selectable heating levels. Each bar represents 10% of the heating element s power. When no bars are selected the heating element is off.
All four parameters explained above can be regulated within their respective ranges by the user at any time during the roasting process.
The manufacturer has gone to great lengths in the design of this new model to be sure that current owners of a Hottop coffee roaster will also be able to upgrade their roasters to the "B" model by replacing the control panel and the main board, both of which are available as an upgrade "kit" for purchase from us. Complete instructions for the upgrade procedure are available here.
With its roots firmly established in the dependability and solid design of the original KN-8828 analog-display, preprogrammed model, and with its predecessor the KN-8828D digital-display model, the new KN-8828P programmable model allows users the ability to modify the roast program to suit their needs, satisfy their personal taste, or best match their preferred coffee origin and brewing method.
To achieve this the manufacturer has redesigned the entire control board as well as the main circuit board. The KN-8828P is now available as a complete roaster. Moreover, the manufacturer has gone to great lengths in the design of this new model to be sure that current owners of a Hottop coffee roaster will also be able to upgrade their roasters to the "P" model by replacing the control panel and the main board, both of which are available as an upgrade "kit" for purchase from us. Complete instructions for the replacement procedure are available here.
The control panel has been totally redesigned, now sporting an advanced, colorful LCD display which serves as the programming interface as well as offering the user full telemetry readouts during the roasting process. For those just learning about roasting coffee there is an "Auto" mode that roasts the coffee much like the previous models. However, the KN-8828P also adds nine additional customizable roasting profiles. The first one is pre-programmed by the factory. The remaining nine profiles can be programmed by the user and saved for use at a future time in the non-volatile memory. This means that if you unplug the roaster you will not lose your stored profiles.
Program "0" (Auto) is set from the factory and cannot be changed. Each of the additional nine programs can have up to eight roasting segments, and each of those segments can be individually programmed for time and temperature as well as fan speed. Additionally, the user can modify any single portion of a program they have already created without having to re-enter the entire profile or segment.
With the ability to create that many custom roasting profiles, the KN-8828P can be set up to cover just about any roasting need. Use program 1 for espresso, program 2 for the Bolivian light Roast that mom loves so much, program 3 for that dark "French Roast" that uncle Bernie waxes poetic about, and six more profiles to make the roaster work just the way you want it. It is also easy to keep track of the various profiles because the user can add their own three-character, alpha-numeric name.
To further assist the user, animations have been added to the control panel. In the lower left-hand corner various animations remind the user of tasks that need to be completed. Prompts include emptying the chaff tray (shown here to the right) adding beans, or eject and cool-down mode is in progress. When an alarm goes off a quick glance at the display lets the user know what to do.
Among various safety features are one that the chaff tray needs to be removed from the machine for emptying or the next roast cannot begin, even if the machine has been unplugged.
The screen animation on LCD reminds user that chaff tray needs to be emptied before the next roast can begin.
Besides the animations on the message center, the lighting on the LCD screen changes depending on which mode or function is in use. One more way to alert the user.
The graph above created from data gathered during an actual roast compares the temperature reported by the KN-8828P's LCD display to the actual bean temperature taken with a separate probe inserted into the roasting chamber.
Another great, safety feature helps keep the user from ruining a roast. When bean temperature reaches 414 F, the roaster will signal the user by beeping for thirty seconds. This warns the user that the beans are approaching the point where they may be burnt or even ignite. During this thirty-second warning period the user MUST press the "Enter" button. If the button is not pressed the machine will automatically eject the beans into the cooling tray. Nice going!
1 - Countdown timer to show total amount of time left in the current roasting process.
2 - Current roasting chamber temperature.
3 - Fan state and relative speed (fan is off in this picture)
4 - Current state (Roasting, Plus Time, Cooling, etc.).
5 - Eight programmable roasting segments will be available to be programmed. These bars show the portion of the programmed temperature which has been achieved for the programmed temperature for that segment.
6 - In the same way the vertical bar shows temperature progress, these four squares show how the programmed time for the current segment is progressing. Each one indicates 25% of the time for that particular segment. Here you see that this segment is at about 50% of the programmed time.
7 - This time display shows the amount of time left for the active segment.
8 - This bar represents the user's programmed temperature for that segmen
To get started make sure the roaster is located in a flat, level surface. It is going to get hot and generate smoke (quite a bit of smoke, in fact, if you want dark roasts), so leave plenty of space around it. Ideally it should be near a window or underneath a kitchen hood for ventilation. During warm (not hot, nor cool) weather you can use it outside, but be aware that ambient temperature has a direct impact on your roast. For this reason we recommend that you use the roaster only indoors and with adequate ventilation.
The Hottop has a unique feature, the pre-heating cycle. This is a familiar step to bakers; you need to preheat the oven before starting your baking. You start the roaster's pre-heating cycle by pressing the "Start" button. Do not drop the green beans until the pre-heat cycle is complete. The roaster will give you a loud beep to remind you that it is time to fill in the beans.
We just loaded the green beans and the roasting process has begun. Notice the green color of the unroasted coffee beans.
After eight minutes the beans have begun to take on some color. Notice the small amount of steam coming out. There is a pleasant grassy aroma
We reached first crack (about 15 minutes). It sounds like breaking pencils. Beans are medium brown, more smoke is now present and smells like coffee!
At about 18 minutes we reach second crack. This is a dark roast and the beans are being ejected. Yes, there is quite a bit of denser smoke now.
Ejecting a lighter roast. Not so much smoke now. This is our preferred roast: "moderately dark". You maintain the fruity , acidic flavors of our Bolivian beans without the overbearing ashy mouth feel.
The cooling process is completed. Two arms rotate the beans while air is drawn down through the holes in the pan. Notice the nice, even dark roast. Cooling takes 4 to 5 minutes. This is a good roaster!
An inside look of a just-used roasting chamber before cleaning and after the stainless steel drum is removed for required cleaning after each roast cycle. Don't skip the cleaning. Make sure there are no beans left inside. It will ruin your next roast.
Side shot of the digital model after completing a dark roast cycle. The side filter (blue) is very visible. Keeping the wire heat protectors is very important. The roaster gets very hot! Notice the black handle on top. It belongs to the green coffee chute where you drop the coffee after it beeps announcing that it is pre-heated and ready to go. Cool or what?
All the components that can be removed for cleaning. Notice the high quality of the Stainless Steel parts. Clockwise from the top left corner: a) perforated cooling pan. b) side filter (disposable), c) roasting drum, d) glass window, e) top metal charcoal filter (replaceable), f) drum bearing plate, g) chaff collector, and h) green beans drop-down chute cover
During our extensive tests, we were impressed with how solid this coffee roaster is built and how easy it is to use it. We roasted all sorts of beans (including Decaf) and we were impressed with the overall results. All models allow you to change the time of the roast. The temperature is controlled by the computer, which may be a positive or negative aspect depending on your point of view. If you like to change the temperature to achieve your preferred roasting profile, this is a negative. Such users should opt for the Gene Cafe or even the I-Roast2. On the other hand, if you have your hands full with the time of the roast and you rather just let the computer handle the temperature, this is a positive. By the way, there is debate among roasting experts as to whether changing the temperature during the roast is a good thing. Michael Sivetz, the inventor of "Fluid Bed" roasters, for example, thinks that the quicker you get to 485 degrees (and stay there), the better the roast will be. As you can imagine, Mr. Sivetz doesn't think much of "profile roasting" because most roasters (even the expensive, commercial ones) do not have the ability or accuracy to measure bean temperature (the important variable), and simply measure "roasting chamber" temperature, which is not a good indicator. We will not settle the debate here. W e just believe in full disclosure.
The roaster defaults at 18 minutes, which makes for a light roast. Using our Bolivian beans we have found the best results at 19 for Primera Extra (A) and 20 for Superior (AA) and Cumbre (AAA). You need to experiment and discover the level that best fits your preferences (not somebody else's like us). Roasting is also influenced by ambient temperature and humidity, density of the bean and the voltage on your electrical circuit. So experiment and take our levels, as that, starting points. Besides here is where the fun in coffee roasting comes. Doing your own thing and then bragging about it to your amazed family and friends, who up to now, never probably enjoyed truly fresh-roasted coffee.
Even though, as a roasting principle we prefer the "fluid bed" roasters (because of its sharper, cleaner, more flavorful coffee since the beans are always surrounded by air and never touch any metal surface that accumulates burned up oils that over time become rancid and affect the flavor of the new roast), with regular and aggressive cleaning, this roaster could produce intense flavors and deep, subtle bodies. For drum roasters it is important to do aggressive cleaning in order to prevent the accumulation of over burnt or rancid oils that will accumulate on the inside surfaces and impact future roasts. However, drum roasters retain the charisma of a technique that has been used successfully since the 15th century. A drum roaster allows you to roast more "by the senses" (smell, color, sound) than "by wire" (fully automated equipment). However, with the introduction of the programmable models the Hottop has now also joined the "roast by wire" category.
In any event, we are here to help you and to make your progression into a "Roastmaster" a truly rewarding and exciting journey. Do not hesitate to contact us. We answer al questions and love to talk about coffee. Can't you tell?
For a more detailed and technical review of the Basic Programmable (KN-8828B) Hottop click here:
For a more detailed and technical review of the Full Programmable (KN-8828P) Hottop click here:
A quick primer on fresh-roasted coffee: Most people are amazed to learn that once a coffee bean has been roasted, it starts to lose flavor, slowly at first, but surely in just three days, even if it has not been ground. Over the next three weeks, even more flavor is lost, beyond repair. Most of us don't often have a chance to taste the full flavor of coffee, unless we know a local coffee roaster. Until 50 years ago, this is how coffee was sold, just like milk. Your local coffee roaster delivered freshly roasted beans to your home at regular intervals based on your family's consumption. After WWII, when "development" took place, national coffee roasters started offering "convenient" and "scientifically" packaged coffee and convinced us that "modern" coffee was "just as good" and without all the fuss and mess. Well, guess what, commercial coffee tasted awful, and we just drank it because we wanted the caffeine. The only thing we cared about was the price. No wonder young kids started drinking colas. It also has caffeine, but at least it tastes good and sweet!
Let's go back! With a modern home/professional coffee roaster, like this one, there is no mystery to coffee roasting. Quickly and without any mess, you will be ready to brew a pot of the freshest coffee that you have ever made. Furthermore, once you have started roasting your own coffee, you will be able to savor the truly finest coffees in the world freshly roasted in your own location!
So, go ahead, recover one of the timeless, lost pleasures and start roasting your own coffee today.
Affiliations: We are proud members of the Specialty Coffee Association of America and the Specialty Coffee Association of Bolivia. We are also proud members of the Cup of Excellence .
If you have any questions, email us at ****@invalsa.com
