Miele SOFTTRONIC W 1113 Operating Instructions Manual page 26

Once the flow of water stops:
^ Remove the drain filter lid.
^ Remove any foreign objects or lint
from the filter.
26
^ Check that the drain pump impeller
(in the back of the chamber) rotates
freely by spinning with your hand.
^ Return the drain filter and tighten into
place.
,
If the drain filter is not tightened
securely, water will leak out when the
machine is used.