Electrolux LAUNDRY User manual

SERVICE MANUAL
LAUNDRY
ELECTROLUX HOME PRODUCTS
ITALY S.p.A.
Spares Operations Italy
Corso Lino Zanussi,30
Publication
number
I - 33080 PORCIA /PN (ITALY) 599 37 47-13
Fax [phone]
Edition: 2006-01-12
EN
Washing machines
HEC
Structural characteristics,
electrical components and
accessibility
Production:
ZP - Porcia Italy

SOI/DT 2006-01 dmm 2/71 599 37 47-13

SOI/DT 2006-01 dmm 3/71 599 37 47-13
CONTENTS
1PURPOSE OF THIS SERVICE MANUAL .............................................................................................. 6
2IMPORTANT NOTES ............................................................................................................................. 6
3WASHING 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
4FRONT-LOADING WASHING MACHINE “HEC” ............................................................................ 19
4.1 Washing system............................................................................................................................... 19
4.1.1 “ECO-BALL” ball valve ............................................................................................................. 20
4.1.2 Ball valve: operating principle .................................................................................................. 20
4.1.3 “JETSYSTEM” washing system............................................................................................... 21
4.1.3.1 JETSYSTEM Hydraulic circuit............................................................................................ 21
4.2 Cabinet............................................................................................................................................. 22
4.3 Door ................................................................................................................................................. 22
4.3.1 Handle assembly..................................................................................................................... 22
4.4 Control panel.................................................................................................................................... 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 ("long" version) ................................ 28
4.6.1.1 Operating principle .............................................................................................................29
4.6.2 Detergent dispenser with multiple-outlet solenoid valve ("short" version G19) ....................... 30
4.6.2.1 Operating principle .............................................................................................................31
4.7 Washing machine with traditional washing system and “ECO-BALL” ball valve............................. 32
4.8 “NEW JET” circulation circuit ........................................................................................................... 32
4.8.1 Drain filter ................................................................................................................................. 32
5ELECTRICAL COMPONENTS ............................................................................................................. 33
5.1 Suppressor....................................................................................................................................... 33
5.1.1 General characteristics ............................................................................................................ 33
5.1.2 Electrical symbols .................................................................................................................... 33
5.1.3 Circuit diagrams ....................................................................................................................... 33
5.1.4 Checking for efficiency ............................................................................................................. 33
5.2 Push-button...................................................................................................................................... 34
5.2.1 General characteristics ............................................................................................................ 34

SOI/DT 2006-01 dmm 4/71 599 37 47-13
5.2.2 Electrical symbol ...................................................................................................................... 34
5.2.3 Checking for efficiency ............................................................................................................. 34
5.3 Door safety interlock (traditional version) ........................................................................................ 35
5.3.1 General characteristics ............................................................................................................ 35
5.3.2 Electrical symbol ...................................................................................................................... 35
5.3.3 Circuit diagrams ....................................................................................................................... 35
5.3.4 Checking for efficiency ............................................................................................................. 36
5.4 Instantaneous door safety interlock ................................................................................................. 36
5.4.1 General characteristics ............................................................................................................ 36
5.4.2 Operating principle ................................................................................................................... 36
5.4.2.1 "Door open" conditions....................................................................................................... 37
5.4.2.2 Automatic release device ................................................................................................... 37
5.4.2.3 Protective cut-out for solenoid valve .................................................................................. 37
5.4.3 Electrical symbol ...................................................................................................................... 37
5.4.4 Circuit diagram ......................................................................................................................... 37
5.5 Solenoid valve.................................................................................................................................. 38
5.5.1 General characteristics ........................................................................................................... 38
5.5.2 Electrical symbol ...................................................................................................................... 38
5.5.3 Checking for efficiency ............................................................................................................. 38
5.6 Pressure switch................................................................................................................................ 39
5.6.1 General characteristics ............................................................................................................ 39
5.6.2 Pressure switch hydraulic circuit.............................................................................................. 39
5.6.3 Operating principle ................................................................................................................... 40
5.6.4 Electrical symbol ...................................................................................................................... 40
5.6.5 Circuit diagram ......................................................................................................................... 40
5.6.6 Checking for efficiency ............................................................................................................. 40
5.7 Analogue (electronic) pressure switch............................................................................................. 41
5.7.1 General characteristics ............................................................................................................ 41
5.7.2 Operating principle ................................................................................................................... 41
5.7.3 Electrical symbol ...................................................................................................................... 42
5.7.4 Circuit diagrams and operating frequency ............................................................................... 42
5.7.5 Checking for efficiency ............................................................................................................. 42
5.8 Commutator motor ........................................................................................................................... 43
5.8.1 General characteristics ............................................................................................................ 43
5.8.2 Operating principle ................................................................................................................... 43
5.8.2.1 Control of the speed of the motor....................................................................................... 44
5.8.2.2 Direction of motor rotation.................................................................................................. 44
5.8.2.3 Tachymetric generator ....................................................................................................... 45
5.8.3 Electrical symbols .................................................................................................................... 45
5.8.4 Circuit diagram ......................................................................................................................... 46
5.8.5 Checking for efficiency ............................................................................................................. 46
5.9 Induction motors (asynchronous) .................................................................................................... 47
5.9.1 General characteristics ............................................................................................................ 47
5.9.2 Operating principle ................................................................................................................... 47
5.9.3 Checking the efficiency ............................................................................................................ 47
5.10 Inverter (if featured) ......................................................................................................................... 48
5.11 Heating element............................................................................................................................... 49
5.11.1 General characteristics ............................................................................................................ 49
5.11.2 Electrical symbol ...................................................................................................................... 49
5.11.3 Checking for efficiency ............................................................................................................. 49
5.12 NTC temperature sensor (incorporated in the heating element) ..................................................... 50
5.12.1 General characteristics ............................................................................................................ 50
5.12.2 Electrical symbol ...................................................................................................................... 50
5.12.3 Checking for efficiency ............................................................................................................. 50
5.13 Drain pump ...................................................................................................................................... 51
5.13.1 General characteristics ............................................................................................................ 51
5.13.2 Electrical symbol ...................................................................................................................... 51
5.13.3 Checking for efficiency ............................................................................................................. 51
5.14 Water control (if featured) ................................................................................................................ 52
5.15 Circulation pump (if featured) .......................................................................................................... 53
5.15.1 General characteristics ............................................................................................................ 53
5.15.2 Electrical symbol ...................................................................................................................... 53
5.15.3 Checking for efficiency ............................................................................................................. 53
5.16 Circuit diagrams ............................................................................................................................... 54
5.16.1 Wiring diagram ......................................................................................................................... 54

SOI/DT 2006-01 dmm 5/71 599 37 47-13
5.16.2 Wiring ....................................................................................................................................... 55
5.16.3 Part numbers for wiring ............................................................................................................ 55
5.16.4 Basic circuit diagram ................................................................................................................ 56
6ACCESSING COMPONENTS .............................................................................................................. 57
6.1 Access from the work top ................................................................................................................ 57
6.1.1 Electronic pressure switch ....................................................................................................... 57
6.1.2 Pressure swtich........................................................................................................................ 57
6.1.3 Suppressor............................................................................................................................... 58
6.1.4 Cable grommet......................................................................................................................... 58
6.1.5 Solenoid valve.......................................................................................................................... 58
6.1.6 Control panel............................................................................................................................ 59
6.1.7 Main PCB ................................................................................................................................. 59
6.1.8 Control/display board ............................................................................................................... 59
6.1.9 Detergent dispenser................................................................................................................. 60
6.1.10 Removing the duct from the dispenser .................................................................................... 60
6.2 Access from the front panel ............................................................................................................. 61
6.2.1 Door.......................................................................................................................................... 61
6.2.2 Door hinge................................................................................................................................ 61
6.2.3 Door safety interlock ................................................................................................................ 61
6.2.4 Bellows seal ............................................................................................................................. 62
6.2.5 Front side ................................................................................................................................. 62
6.2.6 Drain filter pump body .............................................................................................................. 63
6.3 Access from the rear panel.............................................................................................................. 64
6.3.1 Drive belt .................................................................................................................................. 64
6.3.2 Pulley........................................................................................................................................ 64
6.3.3 Motor ........................................................................................................................................ 65
6.3.4 Heating element ....................................................................................................................... 65
6.3.5 Circulation pump (if featured)................................................................................................... 65
6.3.6 Water control (if featured) ........................................................................................................ 65
6.4 Access from the bottom of the appliance.........................................................................................66
6.4.1 Damper..................................................................................................................................... 66
6.4.2 Filter body tub hose + Pressure chamber................................................................................ 66
6.4.3 Drain pump............................................................................................................................... 66
6.4.4 Inverter ..................................................................................................................................... 66
6.5 Washing group................................................................................................................................. 67
6.6 Drum and tub shells......................................................................................................................... 67
6.6.1 Drum shaft bearings................................................................................................................. 68
6.6.2 Drum spider.............................................................................................................................. 68
6.6.3 Front counterweight ................................................................................................................. 68
6.6.4 Rear counterweight .................................................................................................................. 68
6.7 Drum lifter ........................................................................................................................................ 69
7TOOLS AND MATERIALS.................................................................................................................... 70
7.1 Standard tools.................................................................................................................................. 70
7.2 Materials .......................................................................................................................................... 71