Miele DGC 7440 Operating And Installation Instructions page 16

Warning and Safety instructions
Cleaning and care
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Risk of injury due to electric shock. The steam from a steam
cleaning appliance could reach electrical components and cause a
short circuit. Never use a steam cleaner for cleaning.

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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The shelf runners can be removed (see "Cleaning and care –
Cleaning the shelf runners").
Refit the shelf runners correctly.
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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.
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