Miele DA 4228 W Puristic Plus Operating And Installation Instructions page 12

Warning and Safety instructions
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The appliance must not be connected to a chimney or flue which
is in use. Neither should it be connected to ducting which ventilates
rooms with fireplaces.
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If exhaust air is to be extracted into a chimney or ventilation duct
no longer used for other purposes, seek professional advice.
Cleaning and care
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There is a risk of fire if the cooker hood is not cleaned as
described in these operating instructions.

Do not use a steam cleaning appliance to clean this appliance.
The steam could reach electrical components and cause a short
circuit.
Accessories and spare parts
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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.

Miele can only guarantee the safety of the appliance when
genuine original Miele replacement parts are used. Faulty
components must only be replaced by Miele spare parts.

Miele will guarantee to supply functional spare parts for a
minimum of 10 years and up to 15 years following the
discontinuation of your vapour extraction unit.
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