Yes, please be assured. Basically, you can roast coffee by simply selecting an already registered profile, so even beginners can use it easily.

No problem. We recommend experiencing a stable roast with automatic profiles first, and then gradually customizing as you get used to it.

Basically, you can use it for a long time with simple daily maintenance (cleaning).

In the unlikely event that repairs are needed, we will respond promptly, either domestically or in cooperation with the manufacturer.

・Brush off any remaining chaff (bean husks, etc.).

・Wipe the exterior of the roaster with a soft, non-abrasive cloth.

・Coffee oil will accumulate in the roasting chamber with use, creating a "seasoned" surface.

　There is no need to forcibly remove this oil.

　Removing it will not improve the performance of the roaster or the taste of the coffee.

　 *Never touch or clean the tip of the temperature sensor.

　　Doing so may cause damage.

・Wipe the inner glass part regularly with a damp paper towel.

・After each roast, brush the mesh disc on the lid to remove the chaff (thin skin of the bean).

・To maintain consistent performance, ensure that the holes in the filter disc are not clogged.

・For thorough cleaning, disassemble the chaff collector and soak each component in an espresso machine cleaner (such as Cafetto EVO or Urnex) or a non-abrasive detergent containing sodium carbonate and sodium bicarbonate.

・Make sure all parts are thoroughly dry before reassembling the chaff collector for use.

Fan Preview is a function that allows you to check the movement (circulation status) of beans before roasting. No heating is performed; only the fan is run to check in advance whether the beans are moving properly.

For more details, please refer to the following page:
Fan Preview

You can check by following these steps:

1. Weigh out 120g of green beans and load them into the roaster.
2. Attach the chaff collector.
3. Select the "K-logic Classic" profile.
4. Press the "≡" button.
5. When "Press ⏵ now for fan preview" is displayed, press ⏵.
6. The fan will start.
7. Check if "120g" and "14700 rpm" are displayed on the screen. (If not, adjust using +/–).
8. Check that the beans are circulating well.

Increasing the fan speed (rpm) may improve the situation. Also, if the amount of beans is too large, circulation will be poor, so please adjust to an appropriate amount.

The maximum roasting time for this machine is 20 minutes and cannot be extended beyond that. However, the roast quality is determined not only by "time" but also by the "amount of heat applied and its change (RoR)."

By adjusting the profile, you can achieve a taste closer to your desired outcome.

On this unit, the displayed fan speed is entered as 10 times the actual rotation speed (rpm). For example, if you enter "10", "100 rpm" will actually be added.

RoR (Rate of Rise) is an indicator that shows the speed of temperature increase. It represents how quickly the temperature is rising during roasting and significantly impacts the flavor development.

In the graph, we mainly check the following elements:

Temperature curve: Temperature changes of the beans

• RoR: Rate of Rise (speed of temperature increase)
• Fan/Heater output: Control status during roasting

Basically, a stable roast is considered to be one where the RoR curve gently declines.

Yes, the profiles you create can be saved and reused. By saving them in the software and uploading them to the roaster, you can reproduce the same roast at any time.

Yes, you can.

As soon as the first roast has finished cooling, you can start the next roast.

The Nano 7 is designed for continuous use, allowing you to roast without any waiting time.

The maximum temperature setting for this device is approximately 230°C. Temperature settings higher than this are restricted for safety reasons.