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When the beans are cool and the roaster has stopped you need to make adjustments to your roasting practice so that the beans circulate adequately throughout the next roast cycle. This means using a smaller load or a higher fan speed. Check for initial circulation and adjust fan speed with Fan preview. For a more detailed explanation see Bean lock.
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In vary rare cases the hot air trapped in the bottom of the roast chamber will heat some beans to the point where they begin to smoulder. In such a case you will see billows of dense black smoke, or in exceptionally rare cases you will see glowing beans or flames. If this is the case, turn the roaster off at the wall and treat as a chaff fire: either cover the top of the chaff collector with a pot lid, or remove the roaster to outdoors and wait for the fire to burn itself out. This is a very rare situation that most Kaffelogic users will never see. If it results in damage to the roaster contact customer support for assistance. |
Is Bean Lock the only cause of these warnings?
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If thermal dip errors occur during a standard test roast, the element is most likely faulty and needs to be replaced.
Some units manufactured in the first quarter of 2024 may show occasional spurious thermal dip warnings during normal roasts. If this happens, make sure your firmware is up to date (at least v7.11.8).
If you are in doubt about whether one of these faults might be present, contact customer support for assistance.
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