Hottop roasters are drum roasters. The drum rotates throughout the roasting process so that the beans are roasted evenly. The energy comes from a heating element, at the same time you can adjust and gradually adjust the air flow, which is a great function, as this combination of convection (through the air) and conduction (through the heating element) can very well influence the roasting. The sweet, floral or fruity notes of the coffee can thus be worked out very well.
By feeding the beans directly into the roaster when it reaches the desired temperature, the starting temperature and the whole roasting curve are very precise and repeatable.
The cracking of the beans is very well audible, which helps to understand at which point in the roasting you are standing. In addition, the machine has a very good built-in cooling system that brings the beans back to room temperature in a few minutes, which is important to prevent the beans from roasting any further.
The model with PC connection (KN-8828B-2K+) is the ideal roaster for ambitious home roasters or professional users who want to develop roasting profiles for the production roaster. The roaster is connected to the PC via USB and connected to a roasting program - such as Artisan, the free software that is also used by most professional roasters. The heat supply can be adjusted very precisely in 100 steps, the air supply in 10 steps. Both bean temperature and ambient temperature are read out on the display. In Artisan, the roasting curve is recorded live on the PC and important information such as rate of rise or development time and % is displayed live. Subsequently, the roasting can be documented in detail and can also be evaluated and saved with Cupping Scores. The roaster works very consistently, so that you can repeat the roasts very precisely and develop roasting profiles that either taste perfect to you or are templates for roasts on production roasters such as Probat, Giesen, Diederich or similar..
+ Solid processed
+ Very precise roasting
+ Reliable and high-quality roasting
+ Roasting curves can be repeated
+ Roasting curves are documented live and shown in great detail with additional information such as Rate of Rise
+ Roasting process clearly visible through the window, well audible and good to smell (grass phase, hay phase, bread phase, first crack)
+ Very good built-in cooling
- After roasting, the unit needs approx. 15 minutes to cool down again and preheat to the right point for the next cooling
For ambitious home roasters who want to document and develop roasting curves to get everything out of the beans and roast them perfectly for themselves. In addition, the device is very popular with professional users who develop the curves on the roaster, which they later implement on the large drum roasters in production.
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