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If you have any questions after reading my answer,be sure to let me know.At this link you will find the User manual with diagrams showing this process below on page 12. "Cleaning the pre chamber"
Cleaning the pump
The washing machine is fitted with a self-cleaning pump
which does not require any maintenance. Sometimes,
small items (such as coins or buttons) may fall into the
pre-chamber which protects the pump, situated in its
! Make sure the wash cycle has finished and unplug the
To access the pre-chamber:
1. using a screwdriver,
remove the cover panel
on the lower front part of
the washing machine (see
2. unscrew the lid by rotating
it anti-clockwise (see
figure): a little water may
trickle out. This is perfectly
3. clean the inside thoroughly;
4. screw the lid back on;
5. reposition the panel, making sure the hooks are securely
in place before you push it onto the appliance.