Miele CVA 7440 Operating And Installation Instructions page 56

Cleaning and care
 Detach the milk pipework from the
dispensing unit as follows: pull the
tab  to the left.
Do not remove the milk pipework
connecting piece. If necessary, clean
the connecting piece with the cleaning
brush.
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 Grip the dispensing unit by the sides
and pull it down to remove it.
 Take the dispensing unit apart,
separating it into 3 components: the
Y-piece, the spouts, and the holder.
 Clean all parts thoroughly.