Miele CM6150 Operating Instructions Manual page 12

Warning and Safety instructions
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Do not use green (unroasted) coffee beans or mixtures of coffee
beans which contain green coffee beans. Green coffee beans are
very hard and still contain a certain amount of residual moisture.
These can damage the coffee machine grinder as soon as grinding
begins.
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Do not use coffee beans which have been treated with caramel,
sugar or other substances including sugary liquids. Sugar will
damage the coffee machine.
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Only add ground coffee or the Miele cleaning tablets for
degreasing the brew unit to the ground coffee chute.
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Do not use any caramelised ready ground coffee. The sugar in the
coffee will stick to and block the brew unit of the coffee machine.
The cleaning tablets for degreasing the brew unit will not remove this
type of deposit.
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Only use milk without additives. Additives in milk usually contain
sugar and this will stick to the milk pipework.
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If using dairy milk make sure that it has been pasteurised.
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Do not use naked flames, e.g. a candle on or near the coffee
machine. The coffee machine could catch fire with the risk of the fire
spreading.
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The machine must not be used for cleaning objects.
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