Fan Preview
Fan Preview is a function to check the circulation status of beans before roasting. It does not heat, but only activates the fan to check the movement of beans inside the roasting chamber.
To operate, simply access it from the "≡ (Menu) button" on the main unit.
Why Fan Preview is important
In Kaffelogic, one of the crucial factors influencing roast quality is "proper bean circulation."
Normally, the fan is automatically controlled based on calibration, but:
- Differences in bean density
- Changes in batch size (input amount)
can sometimes prevent ideal circulation. By using Fan Preview, you can check the status before roasting and make adjustments as needed.
How to check bean circulation
- Weigh 120g of green beans and load them into the roaster.
- Attach the chaff collector.
- Select the K-logic Classic profile.
- Press the "≡" button.
- When "Press ⏵ now for fan preview" is displayed, press the ⏵ button.
→ The fan will activate. - The display will show "120g" and "14700 rpm". If not displayed, adjust to these values using the + / - buttons.
- Check the bean circulation status.
Ideal fan level
- Ideally, the beans should circulate gently.
- Pay particular attention to whether the beans in the center are slowly rotating and exchanging positions.
Fan level is too strong
Fan level is insufficient
How to handle strong or weak bean circulation
If you are not getting sufficient circulation, please follow the steps below to adjust.