Miele H6400BM Operating And Installation Instructions page 21

Cleaning and care
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Do not use a steam cleaning appliance to clean this oven.
Pressurised steam could reach the electrical components and
cause a short circuit.
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Scratches on the door glass can result in the glass breaking.
Do not use abrasive cleaners, hard sponges, brushes or sharp
metal tools to clean the door glass.
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Try to avoid the interior walls being splashed with food or liquids
containing salt. If it does happen, wipe these away thoroughly to
avoid corrosion on the stainless steel surface.
Accessories
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Use only genuine original Miele spare parts. If spare parts or
accessories from other manufacturers are used, the warranty will be
invalidated, and Miele cannot accept liability.
Warning and Safety instructions
21