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To function at its best your Kaffelogic fan needs to be speed calibrated.

How to check fan speed calibration

  1. Weigh 120g of green beans and load these into your roaster.

  2. Put the chaff collector in place.

  3. Select the K-logic classic profile.

  4. Press ≡. When you see ‘Press ⏵ now for fan preview’, press ⏵. The fan will start.

  5. The display will show 120g and 14700 rpm. If it does not, use + and - until it does.

  6. Look at the bean circulation. The beans should be circulating gently. Pay particular attention to the beans in the middle which should be slowly turning over.

  7. If there is no circulation of beans in the middle you need to re-calibrate.

Notes

  • See below for how to select suitable beans.

  • If you have a mesh chaff collector with an opaque chimney you will have to remove the chaff collector lid so that you can see the beans.

  • Fan preview requires firmware version 7.10 or higher. If you need to update, see Update firmware.

How to re-calibrate

  1. Weigh 120g of green beans and load these into your roaster.

  2. Put the chaff collector in place.

  3. Hold down both the + and - buttons while you turn the roaster on. It will enter calibration mode.

  4. Press ≡ until you see ‘Press ⏵ now for fan at 14700 rpm’. Press ⏵. The fan will start.

  5. The display will show ‘fan 14700’. If it does not, turn the roaster off and start again.

  6. Look at the bean circulation. The beans should be circulating gently. Pay particular attention to the beans in the middle which should be slowly turning over.

  7. Use the + and - buttons to alter the fan speed until the beans in the middle just start to circulate.

  8. Press ⏵ twice to save the setting. The display will briefly show ‘Saved'.

  9. Turn the roaster off to exit calibration mode.

Notes

  • See below for how to select suitable beans.

  • If you have a mesh chaff collector with an opaque chimney you will have to remove the chaff collector lid so that you can see the beans.

  • Take care to alter ‘fan at 14700 rpm’. There are other calibration settings which should not be changed except under instructions from an authorized Kaffelogic service agent.

  • Fan speed calibration at 14700 rpm requires firmware version 7.10 or higher. If you need to update, see Update firmware.

How to select suitable beans

Your roaster should be calibrated using beans of a medium size and density. We recommend Brazil Cerrado, Columbia Popayan or similar. Do not use very small or particularly dense beans. Do not use monsooned, decaf, or particularly large beans.

If you need to make adaptations to accommodate specific beans, do not do this by altering calibration. See Uneven roasting .

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