Miele M 7240 TC Operating And Installation Instructions page 16

IMPORTANT SAFETY INSTRUCTIONS
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The door can support a maximum load of 17.5 lbs (8 kg). Do not
lean or sit on an open door, or place heavy items on it. Make sure
that nothing gets trapped between the door and the oven
compartment. This could damage the microwave oven.
The following applies to stainless steel surfaces:
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Adhesives will damage the coated stainless steel surface and
cause it to lose its dirt-repellent protective coating. Do not use sticky
notes, adhesive tape, or other types of adhesive on the stainless
steel surface.
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Magnets can cause scratches. Do not use the stainless steel
surface as a magnetic notice board.
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