Miele CVA 7845 Operating And Installation Instructions page 82

Cleaning and care
Cleaning the brew unit and interior
The moving parts of the brew unit
are lubricated. Cleaning agents will
damage the brew unit.
Only ever clean the brew unit by
hand with warm water. Do not use
any cleaning agents.
To ensure good tasting coffee and to
prevent the formation of microbes in
the appliance, remove and clean the
brew unit under running water once a
week.
 Open the appliance door.
 Remove the water container.
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 Press the button under the handle of
the brew unit  and, whilst doing so,
turn the handle forwards .
 First, pull the brew unit sideways 
and then slide it out forwards .
While doing this, tilt the brew unit
forwards .
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
reinserted.