Miele CM6150 Operating Instructions Manual page 14

Warning and Safety instructions
For machines with stainless steel surfaces:

Do not use sticky notes, transparent adhesive tape, masking tape
or other types of adhesive on stainless steel surfaces. These dam-
age the surface, causing it to lose its dirt repellent protective coating.
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The finish on stainless steel surfaces is susceptible to scratching.
Even magnets can cause scratching.
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