5 WASHER-DRYERS 5.1 Drying system The drying system is based on forced-air circulation with water-jet condensation. The maximum drying capacity is equivalent to half the maximum load of dry washing. If a full load is washed, two drying cycles are necessary. If a half-load is washed, the drying cycle can be programmed for automatic execution at the end of the washing cycle. During the drying phases, the drum rotates in alternate directions at low speed. The fan ducts the heated air from the heating elements to the inside of the tub, where it removes the humidity from the washing.
The cold-water jet, coming into contact with the hot and humid air, generates a heat exchange and thus condenses the humidity. The cooled, dry air is ducted back to the fan, again heated by the heating element, and is then circulated back into the drum. In cycles for SYNTHETIC fibres, only one branch of the heating element is switched on (half power). In COTTON cycles, both branches are powered (full power). The cooling water and condensation are drained off by the drain pump. During the last few minutes of the drying cycle, the heating elements are switched off, while the fan continues to operate in order to complete the cooling phase. 5.2 Drying circuit (type "A" condenser) 1. Fan 2.
Fan motor 3. Heating element casing 4. Drying heaters 5. Duct 6. Door seal 7. Tub 8. Tube between tub and condenser 9. Drying condenser 10. Coupling 11. Water fill solenoid 12. Water fill hose to condenser 13. Steam venting tube 14. Air-break 15. Drain filter 16. Drain pump SOI/DT 2002-05 eb 27 599 35 23-17