Miele Freestanding coffee machine Operating Instructions Manual page 12

Warning and Safety instructions
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Degrease the brew unit regularly with Miele cleaning tablets.
Depending on the natural oil content of the coffee used, the brew
unit can become blocked quite quickly.
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Used coffee grounds should be disposed of with the organic
rubbish or on the compost heap. Do not empty them down the sink,
as they could block it.
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The machine must not be used for cleaning objects.
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