Miele Touchtronic T 1329 C Operating Instructions Manual page 18

^ Turn the condenser lock up.
^ Pull out the condenser.
18
^ Hold the condenser against the light.
^ Look through the front and left side
(as illustrated above) of the
condenser to check for lint.
If no lint is visible:
^ Return the condenser.
If lint is visible:
^ Clean the condenser as described.