4.1.1 Recovery of detergent loss from the circulation hose 1. Detergent dispenser 2. Drum 3. Tube between the tub and the filter body 4. Drain filter 5. Circulation hose The water that passes through the re-circulation circuit during the movement of the drum - which acts as the impeller of a pump - prevents detergent residue from depositing in the lower section of the hydraulic circuit (filter body). SOI/DT 2002-05 eb 21 599 35 23-17