Miele DG 7440 Operating And Installation Instructions page 13

Cleaning and care
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Risk of injury due to electric shock. The steam from a steam
cleaning appliance could reach live electrical components and cause
a short circuit. Do not use a steam cleaner to clean the appliance.
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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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The side runners can be removed (see "Cleaning and care –
Cleaning the side runners").
Refit the side 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 to stainless steel surfaces inside the cabinet.
Accessories
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Only use genuine original Miele accessories and spare parts with
this appliance. Using accessories or spare parts from other
manufacturers will invalidate the guarantee, and Miele cannot accept
liability.
Warning and Safety instructions
13