Miele Built-in coffee machine Operating And Installation Instructions page 74

Cleaning the milk pipework of any blockages
To reassemble the lid:
^ First refit the seal in the lid. Then
insert the milk suction tube in the
seal.
Make sure you do not push the
pointed end of the milk suction tube
into the seal.
Step 2: Cleaning the air
suction tube and the elbow
connector in the door
Do not use a pin or other sharp
object as it will damage
components.
^ Pull down the central spout.
^ Open the service flap on the back of
the appliance door.
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^ First pull the air suction tube a out of
the opening c. Then pull off the
elbow connector b.
^ Pull both tubes out of the elbow
connector.
^ Clean the air suction tube a using
the cleaning brush supplied. You can
also loosen blockages by blowing air
through the tube.
^ Clean the opening in the door for the
air suction tube c.
^ Clean the elbow connector b under
running water. If necessary, you can
replace it with the spare part
supplied with the machine.
^ Insert the brush in the milk tube d.
Move the brush back and forth as far
as possible until all milk residues
have been removed.