6.7.6 Drum rotation drive belt...........................................................................................................41 6.8 Detergent dispenser.......................................................................................................................42 6.8.1 Detergent dispenser with distribution levers............................................................................42 6.8.2 Detergent dispenser with multiple-outlet solenoid valve ("long" version) .................................44 6.8.3 Detergent dispenser with multiple-outlet solenoid valve ("short" version)................................46 6.9 Drain/circulation circuits .................................................................................................................48 6.9.1 Washers with traditional washing systems ..............................................................................48 6.9.2 Washers with traditional washing system and “ECO-BALL” ball valve ....................................49 6.9.3 Washers with traditional washing system and “P66" (32 cm) cabinet......................................50 6.9.4 Jetsystem washing machines (with circulation pump) .............................................................51 6.9.5 “NEW JET” circulation circuit (Circulation pump) – version P63BD .........................................52 6.9.6 Jetsystem washing machines (Circulation pump) with Heat exchanger ..................................53 6.9.7 Jetsystem washing machines with NEAT cabinet (JETSY- IZ)................................................54 7 WASHER-DRYER COMPONENTS ......................................................................................................55 7.1 Fan assembly.................................................................................................................................55 7.2 Heater element casing ...................................................................................................................56 7.3 Drying condenser ...........................................................................................................................57 7.3.1 Determining the drying time ....................................................................................................58 7.3.2 Condensation water fill............................................................................................................59 7.4 Duct................................................................................................................................................59 8 ELECTRICAL COMPONENTS..............................................................................................................60 8.1 Control systems .............................................................................................................................60 8.2 Suppressor.....................................................................................................................................61 8.2.1 General characteristics ...........................................................................................................61 8.2.2 Electrical symbols ...................................................................................................................61 8.2.3 Circuit diagrams ......................................................................................................................61 8.2.4 Checking for efficiency............................................................................................................61 8.3 Push-button....................................................................................................................................62 8.3.1 General characteristics ...........................................................................................................62 8.3.2 Electrical symbol .....................................................................................................................62 8.3.3 Checking for efficiency............................................................................................................62 8.4 Door safety interlock (traditional version) .......................................................................................63 8.4.1 General characteristics ...........................................................................................................63 8.4.2 Electrical symbol .....................................................................................................................64 8.4.3 Circuit diagrams ......................................................................................................................64 8.4.4 Version with pneumatic device................................................................................................64 8.4.5 Checking for efficiency............................................................................................................64 8.5 Instantaneous door safety interlock................................................................................................65 8.5.1 General characteristics ...........................................................................................................65 8.5.2 Operating principle..................................................................................................................65 8.5.3 Electrical symbol .....................................................................................................................66 8.5.4 Circuit diagram........................................................................................................................66 8.6 Solenoid valve................................................................................................................................67 8.6.1 General characteristics ...........................................................................................................67 8.6.2 Electrical symbol .....................................................................................................................68 8.6.3 Checking for efficiency............................................................................................................68 8.7 Pressure switch..............................................................................................................................69 8.7.1 General characteristics ...........................................................................................................69 8.7.2 Pressure switch hydraulic circuit ............................................................................................69 8.7.3 Operating principle..................................................................................................................70 8.7.4 Electrical symbol .....................................................................................................................70 8.7.5 Circuit diagram........................................................................................................................70 8.7.6 Checking for efficiency............................................................................................................70 8.8 Analogue (electronic) pressure switch............................................................................................71 8.8.1 General characteristics ...........................................................................................................71 8.8.2 Operating principle..................................................................................................................71 8.8.3 Electrical symbol .....................................................................................................................72 8.8.4 Circuit diagrams and operating frequency...............................................................................72 8.8.5 Checking for efficiency............................................................................................................72 8.9 Water distributor.............................................................................................................................73 8.9.1 General characteristics ...........................................................................................................73 8.9.2 Operating principle..................................................................................................................73 8.9.3 Electrical symbol .....................................................................................................................74 8.9.4 Contact closure diagram .........................................................................................................74 8.10 Induction (asynchronous) motors ..................................................................................................75 SOI/DT 2002-05 eb 3 599 35 23-17