AEG LAVAMAT 4520 - Manual (Page 25)

User information
25
Drain residual water:
Put a receptacle under the drain. Turn the
cap in the anti-clockwise direction until it is
vertical to release residual water.
Remove the filter:
Unscrew the cap all the way and take it off.
Clean it tho-roughly with running water.
Put the assembly back and screw it in the
clockwise direction.
After cleaning the filter, you are required to closed the door. In fact,
for reasons of safety, the door must be closed when the appliance is
working.