Electrolux Washing Machines Service Manual: Arched Structural Characteristics, Electrical Components, and Accessibility (EN)

SERVICE MANUAL LAUNDRY Washing machines ARCHED Structural characteristics, electrical components and accessibility Production: ZP – Porcia - Italy PLT – Olawa - Poland  ELECTROLUX HOME PRODUCTS ITALY S.p.A. Publication Spares Operations Italy number Corso Lino Zanussi,30 I - 33080 PORCIA /PN (ITALY) 599 37 67-82 Fax +39 0434 394096 EN Edition: 2006-08-03

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SOI/DT 2006-03 dmm 2/70 599 37 67-82

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CONTENTS 1 PURPOSE OF THIS SERVICE MANUAL .............................................................................................. 6 2 IMPORTANT NOTES ............................................................................................................................. 6 3 WASHING PRINCIPLES ........................................................................................................................ 7 3.1 Washing.............................................................................................................................................

7 3.1.1 Results of the wash.................................................................................................................... 7 3.2 Fabrics ............................................................................................................................................... 8 3.2.1 Natural and artificial fibres.......................................................................................................... 8 3.2.2 Washing the various types of fibres...........................................................................................

8 3.2.3 Washing animal fibres:............................................................................................................... 8 3.2.4 International symbols for washing of fabrics.............................................................................. 9 3.3 Classification of soiling .................................................................................................................... 10 3.4 Mechanical action ............................................................................................................................

10 3.5 Duration of the washing cycle.......................................................................................................... 10 3.6 Water ............................................................................................................................................... 11 3.6.1 Formation of lime scale and ferrous oxide............................................................................... 11 3.6.2 Hardness of the water..............................................................................................................

11 3.6.3 Total water hardness................................................................................................................ 12 3.7 Detergents ....................................................................................................................................... 13 3.7.1 Composition of a detergent...................................................................................................... 13 3.7.2 Functions of the principal components of a detergent............................................................. 13 3.7.3 Functions of other components of a detergent ........................................................................

14 3.7.4 Detergent quantities................................................................................................................. 15 3.7.5 Washing additives.................................................................................................................... 16 3.7.6 Bleaching.................................................................................................................................. 16 3.8 The function of the water temperature.............................................................................................

17 3.8.1 Using the correct temperature..................................................................................................17 3.9 Washing machine programmes....................................................................................................... 18 4 FRONT-LOADING WASHING MACHINE “HEC” ............................................................................ 19 4.1 Washing system............................................................................................................................... 19 4.1.1 “ECO-BALL” ball valve.............................................................................................................

20 4.1.1.1 Ball valve: operating principle ............................................................................................20 4.1.2 “JETSYSTEM” washing system............................................................................................... 21 4.1.2.1 JETSYSTEM Hydraulic circuit............................................................................................21 4.2 Cabinet.............................................................................................................................................

22 4.3 Door ................................................................................................................................................. 22 4.3.1 Handle assembly...................................................................................................................... 22 4.4 Control panels.................................................................................................................................. 23 4.4.1 Examples of control panels......................................................................................................

23 4.5 Washing groups............................................................................................................................... 24 4.5.1 Types of washing groups ......................................................................................................... 24 4.5.2 Washing group .........................................................................................................................

25 4.5.2.1 Support for bearings...........................................................................................................25 4.5.2.2 Drum...................................................................................................................................26 4.5.2.3 Damper...............................................................................................................................26 4.5.2.4 Drum rotation drive belt......................................................................................................27 4.6 Detergent dispenser.........................................................................................................................

28 4.6.1 Detergent dispenser with multiple-outlet solenoid valve..........................................................

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5.2.1 General characteristics ............................................................................................................ 33 5.2.2 Electrical symbol ...................................................................................................................... 33 5.2.3 Checking for efficiency............................................................................................................. 33 5.3 Door safety interlock (traditional version) ........................................................................................

34 5.3.1 General characteristics ............................................................................................................ 34 5.3.2 Electrical symbol ...................................................................................................................... 34 5.3.3 Circuit diagrams ....................................................................................................................... 34 5.3.4 Checking for efficiency.............................................................................................................

35 5.4 Instantaneous door safety interlock................................................................................................. 35 5.4.1 General characteristics ............................................................................................................ 35 5.4.2 Operating principle...................................................................................................................

35 5.4.2.1 "Door open" conditions.......................................................................................................36 5.4.2.2 Automatic release device ...................................................................................................36 5.4.2.3 Protective cut-out for solenoid valve ..................................................................................36 5.4.3 Electrical symbol ...................................................................................................................... 36 5.4.4 Circuit diagram .........................................................................................................................

36 5.5 Solenoid valve.................................................................................................................................. 37 5.5.1 General characteristics ............................................................................................................ 37 5.5.2 Electrical symbol ...................................................................................................................... 37 5.5.3 Checking for efficiency.............................................................................................................

37 5.6 Pressure switch................................................................................................................................ 38 5.6.1 General characteristics ............................................................................................................ 38 5.6.2 Pressure switch hydraulic circuit..............................................................................................38 5.6.3 Operating principle...................................................................................................................

39 5.6.4 Electrical symbol ...................................................................................................................... 39 5.6.5 Circuit diagram ......................................................................................................................... 39 5.6.6 Checking for efficiency............................................................................................................. 39 5.7 Analogue (electronic) pressure switch.............................................................................................

40 5.7.1 General characteristics ............................................................................................................ 40 5.7.2 Operating principle................................................................................................................... 40 5.7.3 Electrical symbol ...................................................................................................................... 41 5.7.4 Circuit diagrams and operating frequency ...............................................................................

41 5.7.5 Checking for efficiency............................................................................................................. 41 5.8 Commutator motor........................................................................................................................... 42 5.8.1 General characteristics ............................................................................................................ 42 5.8.2 Operating principle...................................................................................................................

42 5.8.2.1 Control of the speed of the motor.......................................................................................43 5.8.2.2 Direction of motor rotation..................................................................................................43 5.8.2.3 Tachometric generator .......................................................................................................44 5.8.3 Electrical symbols .................................................................................................................... 44 5.8.4 Circuit diagram .........................................................................................................................

45 5.8.5 Checking for efficiency............................................................................................................. 45 5.9 Induction motors (asynchronous) .................................................................................................... 46 5.9.1 General characteristics ............................................................................................................ 46 5.9.2 Operating principle...................................................................................................................

46 5.9.3 Checking the efficiency ............................................................................................................ 46 5.10 Inverter (if featured) ......................................................................................................................... 47 5.11 Heating element............................................................................................................................... 48 5.11.1 General characteristics ............................................................................................................

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