Turn the robot hoover off on the control panel and carefully lift it out of the water being mindful not to bash it against the wall and do not pull it out of the pool by its umbilical lead.
Turn the robot on it's back and undo the two clips and lift off the bottom plate of the robot also pick up the black filter bag clips.
Gently take off the filter bag being careful with the wire supports inside.
Turn the bag inside out and wash under a fast running tap, turn in the right way and rewash.
If the bag won't come clean change it for the other bag, if it comes clean refit it (blue tab outward) put the filter retaining clips back on and gently put the bag back on the bottom plate, black clips to hold the filter in and refit the filter plate, reclip it and gently put the robot back into the pool, turn it upside down so it fills rigt up with water and let it sink to the bottom of the pool.
Turn the robot back on on the control panel and check the umbilical isn't caught anywhere.