Miele CVA 7840 Operating And Installation Instructions page 76

Cleaning and care
Cleaning the brew unit and interior
The moving parts of the brew unit
are lubricated. Cleaning agents and
washing-up liquid will damage the
brew unit.
Clean the brew unit by hand only
under warm running water. Do not
use washing-up liquid or any other
cleaning agent.
To ensure good tasting coffee and to
prevent the formation of microbes in
the machine, remove and clean the
brew unit under running water once a
week.
 Open the machine door.
 Remove the water container.
 Press the button under the handle of
the brew unit  and, whilst doing so,
turn the handle forwards .
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 First, pull the brew unit sideways 
and then tip it forwards  and slide it
out that way .
If you cannot remove the brew unit or
can only do so with difficulty, the brew
unit is not in the correct position (see
"Problem solving guide").
When you have removed the brew
unit, do not change the position of
the handle on the brew unit.
Otherwise, the brew unit cannot be
inserted.
 Clean the brew unit by hand under
warm running water without using
cleaning agent or washing-up liquid.