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Electrolux P6000 (Nexus) Series Service Manual

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 ELECTROLUX HOME PRODUCTS
ITALY S.p.A.
Spares Operations Italy
Corso Lino Zanussi, 30
I - 33080 PORCIA /PN (ITALY)
Fax +39 0434 394096
Edition: 2005.11.03
Publication
number
Structural characteristics,
599 37 38-46
electrical components and
EN/dmm

SERVICE MANUAL

WASHING
Washing machines
P6000 (Nexus) Series
accessibility
Production: THR
RAYONG- Thailand

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Summary of Contents for Electrolux P6000 (Nexus) Series

  • Page 1: Service Manual

    SERVICE MANUAL WASHING Washing machines P6000 (Nexus) Series  ELECTROLUX HOME PRODUCTS ITALY S.p.A. Publication Spares Operations Italy number Corso Lino Zanussi, 30 Structural characteristics, I - 33080 PORCIA /PN (ITALY) 599 37 38-46 electrical components and accessibility Fax +39 0434 394096...
  • Page 2 2/60 2005.11 dmm 599 37 38-46...

  • Page 3: Table Of Contents

    CONTENTS PURPOSE OF THIS SERVICE MANUAL ....................6 IMPORTANT NOTES..........................6 WASHING PRINCIPLES ........................... 7 Washing .............................. 7 3.1.1 Results of the wash ........................7 Fabrics ..............................8 3.2.1 Natural and artificial fibres ......................8 3.2.2 Washing the various types of fibres .................... 8 Washing animal fibres:..........................
  • Page 4 Pressure switch ..........................36 5.5.1 General characteristics......................36 5.5.2 Pressure switch hydraulic circuit ....................36 5.5.3 Electrical symbol........................37 5.5.4 Circuit diagram .......................... 37 5.5.5 Checking for efficiency ......................37 Analogue (electronic) pressure switch....................38 5.6.1 General characteristics......................38 5.6.2 Operating principle ........................
  • Page 5 6.7.3 Front counterweight........................56 Drum lifter ............................57 Access to the pumps/manifolds ......................58 6.9.1 Drain pump (standard version)....................58 6.9.2 Drain pump ..........................58 6.9.3 Circulation pump........................59 6.9.4 Drain filter body ........................59 6.9.5 Base............................59 6.10 Front cabinet shell......................... 60 5/60 2005.11 dmm 599 37 38-46...

  • Page 6: Purpose Of This Service Manual

    1 PURPOSE OF THIS SERVICE MANUAL The purpose of this Service Manual is to provide Service Engineers, who already have the basic knowledge necessary to repair household washing machines, with information of a general nature regarding the P6000 (Nexus) range of washing machines. More detailed information regarding specific models may be found in the Service Notes and Service Manuals (issued separately) for each specific model or functionality.

  • Page 7: Washing Principles

    3 WASHING PRINCIPLES 3.1 Washing The washing of the fabrics consists of transferring the dirt from the fabrics to the water, and is achieved using the following: detergent mechanical action temperature time The washing operation comprises four phases: 1. Soaking (the fabrics must be completely soaked). 2.

  • Page 8: Fabrics

    3.2 Fabrics 3.2.1 Natural and artificial fibres NATURAL FIBRES Wool ANIMAL FIBRES Special wool Silk Cotton Linen CELLULOSE VEGETABLE FIBRES Canapa Hemp Ramie ARTIFICIAL FIBRES Viscosa rayon Cupro rayon Special rayons ARTIFICIAL CHEMICAL FIBRES Rayon and polynosics Acetate rayon Triacetate rayon Polyammide fibres Polyurethane fibres SYNTHETIC CHEMICAL FIBRES...

  • Page 9: International Symbols For Washing Of Fabrics

    3.2.3 International symbols for washing of fabrics Labels marked with the following symbols are affixed to the garments, and provide valuable information relative to their treatment. WASHING ACTION Wash at Wash at Wash at Wash at NORMAL 95°C 60°C 40°C 30°C Delicate DO NOT...

  • Page 10: Classification Of Soiling

    3.3 Classification of soiling The dirt in the fabrics consists essentially of: PROTEICN-BASED substances OXIDABLE substances GREASE VARIOUS substances CHEMICAL substances Protein soiling (enzymatic) - sensitive to ENZYMES Blood, Eggs, Chocolate, Grass etc. Oxidable substances - sensitive to BLEACH Wine, Tea, Coffee, Fruit etc. Greasy soiling - sensitive to SURFACE-ACTIVE AGENTS Oil, Butter, Salt etc.

  • Page 11: Water

    3.6 Water Water is the most important element in the washing process, and is fundamental to the final result. Ideally, the water used for the wash should have the following composition: Clear and transparent, a low level of hardness, absence of manganese, low iron and mineral salt content.

  • Page 12: Total Water Hardness

    3.6.3 Total water hardness Total hardness is the sum of the temporary hardness (caused by calcium and magnesium bicarbonates) and the permanent hardness (caused by sulphates, chlorides and calcium/magnesium nitrates). Hardness expressed in French degrees (°F) represents the quantity of calcium carbonate, in grammes, contained in 100 litres of water.

  • Page 13: Detergents

    3.7 Detergents Modern detergents are less aggressive than those used in the past, partly for reasons of environmental protection and partly to prevent damaging the fibres. If used correctly, these offer an excellent protective treatment and a high level of washing power. Detergents that contain no phosphates are far more sensitive to the reaction with calcium.

  • Page 14: Functions Of Other Components Of A Detergent

    3.7.3 Functions of other components of a detergent 1. ENZYMES: Enzymes are proteins produced by living cells (animal and vegetable) and are able to transform organic materials with a high molecular weight, such as starches, proteins and fats, into more easily soluble products.

  • Page 15: Detergent Quantities

    3.7.4 Detergent quantities - efficiency of the washing programme according to the load and the water hardness. In order to perform its function completely and correctly, the appropriate quantity of detergent must be used, which depends on the quantity of water that is contained in the tub of the washing machine, the type of washing cycle, the type of fabrics, the type of soiling and the quantity of washing in the drum.

  • Page 16: Washing Additives

    3.7.5 Washing additives 1. SOFTENER: (Cationic surface-active agent + fragrance): This additive is introduced automatically by the appliance during the final rinse. It softens the surface of the fabric, which thus remains soft to the touch and easier to iron. If used incorrectly before or during the wash, or if introduced too early into the tub by the water fill system, its action is rendered ineffective by the surface-active agents contained in the detergent.

  • Page 17: The Function Of The Water Temperature

    3.8 The function of the water temperature The variety and quality of natural and synthetic fibres which comprise the fabrics, which are sometimes present in percentages that are not declared correctly on the labels, make it necessary in many cases to use a detergent whose washing action is effective at low temperatures.

  • Page 18: Washing Machine Programmes

    3.9 Washing machine programmes 1. Water fill with detergent introduced from the pre-wash compartment Pre-wash 2. Brief heating phase and hot wash (30 - 40°C) (not for wool and, in some 3. Drain cases, delicate fabrics) 4. (Brief spin) 1. Water fill with detergent introduced from the wash compartment 2.

  • Page 19: Control Panel

    3.10 Control panel The plastic control panel is secured to the control panel support by anchor tabs and one or more screws. The shape of the control panel depends on the styling, with LCD display, with DISPLAY or without. 19/60 2005.11 dmm 599 37 38-46...

  • Page 20: Jetsystem" Washing System

    3.11 “JETSYSTEM” washing system In the "Jetsystem" washing system, considering that the removal of the dirt is performed solely by the water that passes through the fibres, the remaining part of the washing solution has been eliminated. In other words, this system is based on the possibility of washing the fabrics using only the water used to wet them;...

  • Page 21: Structural Characteristics

    4 STRUCTURAL CHARACTERISTICS 4.1 “NEXUS” technology These appliances are produced using the NEXUS technology, a patented system consisting of five sub- assemblies: Base Cabinet Control panel support Washing group Work-top 1. Base 2. Damper 3. Rear cabinet 4. Washing group 5.

  • Page 22: Control Panel Support

    4.3 Control panel support 1. Selector 2. Electronic board 3. Pressure switches 4. Detergent dispenser The control panel support (in galvanized sheet metal) is secured by a series of screws to the two cabinet shells. Several components are fitted to the support: electronic board, pushbuttons, switch, capacitor, pressure switches, detergent dispenser and control panel.

  • Page 23: Door

    4.5 Door Door characteristics: • large 30 cm • angle of aperture 160° and 180° • alignment with front panel • differently-styled surrounds • type of aperture (various handles) 1. Front surround 2. Door glass 3. Rear surround 4. Hinge 5.

  • Page 24: Washing Groups

    4.6 Washing groups The washing group is suspended from the support cross-member by two helical springs. The oscillation of the washing group is absorbed by the two dampers attached to the base. Balancing of the washing group is provided by a front counterweight in cement. 4.6.1 Damper 1.

  • Page 25: Washing Group In Carboran

    4.6.2 Washing group in Carboran The tub consists of two half-shells in Carboran, secured together by a series of self-tapping screws. The two counterweights are screwed to the half-shells. The bellows seal is secured to the front half-shell by a metal elastic ring.

  • Page 26: Drum

    4.6.3 Drum The drum consists of a stainless steel casing to which the two flanges are crimped. Three Carboran lifters are pressure-fitted to the internal face of the drum. The drum spider, in aluminium alloy, is secured to the edge of the drum by screws.

  • Page 27: Drum Rotation Drive Belt

    4.6.4 Drum rotation drive belt These appliances are fitted with elastic drive belts. The motor is mounted in a fixed position, and no regulation is possible. 1. Motor pulley 2. Elastic drive belt 3. Drum pulley Different types of drive belts, produced by various manufacturers and with different characteristics, are used in production: •...

  • Page 28: Detergent Dispenser

    4.7 Detergent dispenser 4.7.1 Detergent dispenser with multiple-outlet solenoid valve This type of detergent dispenser, in different dimensions, is used in models featuring: • EWM1000 electronic control system • EWM2000EVO electronic control system • EWM3000NEW electronic control system The water is ducted into the detergent compartment by a solenoid valve with one inlet and 2 or 3 outlets. The detergent drawer may consist of 3 or 4 compartments.
  • Page 29 4.7.1.1 Principles of operation Water fill to pre-wash compartment (Pre-wash solenoid valve) • This version is used in models with three compartments (EWM1000) and 3 or 4 compartments (EWM2000EVO/EWM3000NEW). The detergent contained in compartment "a" is introduced at the beginning of the pre-wash phase.

  • Page 30: New Jet" Circulation Circuit

    4.8 “NEW JET” circulation circuit 1. Tube between tub and filter body 2. Filter body 3. Drain filter 4. Washer 5. Filter knob 6. Drain pump 7. Pump cover 8. Circulation pump intake tube 9. Circulation pump 10. Pump cover 11.

  • Page 31: Electrical Components

    5 ELECTRICAL COMPONENTS 5.1 Suppressor 5.1.1 General characteristics The suppressor is connected to the input of the appliances power line, and prevents radiofrequency disturbance from entering the power circuit. 5.1.2 Electrical symbols 5.1.3 Circuit diagrams 5.1.4 Checking for efficiency THE APPLIANCE GENERATES RADIOFREQUENCY DISTURBANCE: check the efficiency of the earth circuit THE APPLIANCE IS INOPERATIVE: Use an ohmmeter to check that the component is not faulty:...

  • Page 32: Push-Button

    5.2 Push-button 5.2.1 General characteristics Single-button versions are used. These differ as regards the number and functionality of the contacts: switch deviator (single- or two-pole) 5.2.2 Electrical symbol Normally-closed switch Normally-open switch Deviator 5.2.3 Checking for efficiency DOES NOT POWER THE APPLIANCE OR DOES NOT PERFORM THE SPECIFIC FUNCTION: Use a tester to check for correct closure (or aperture) of the various contacts.

  • Page 33: Instantaneous Door Safety Interlock

    5.3 Instantaneous door safety interlock 5.3.1 General characteristics Certain models with electronic control systems feature an instantaneous door safety interlock. In this case, the door can be opened as soon as the drum comes to a stop. 5.3.2 Operating principle 1.

  • Page 34: Electrical Symbol

    5.3.2.3 Protective cut-out for solenoid valve A PTC, connected in series to the solenoid valve, serves as a current limiter (i.e. overheating cut-out) in the following cases: → If the triac on the main PCB is short-circuited → If the START/PAUSE button is pressed repeatedly (more than 10 times) 5.3.3 Electrical symbol 5.3.4...

  • Page 35: Solenoid Valve

    5.4 Solenoid valve 5.4.1 General characteristics The solenoid valve ducts water through the detergent dispenser, and is controlled electrically by the pressure switch. 1. Water intake 2. Solenoid valve body 3. Filter 4. Flow reducer 5. Coil 6. Spring 7. Moving core 8.

  • Page 36: Pressure Switch

    5.5 Pressure switch 5.5.1 General characteristics The function of the pressure switch is to determine the quantity of water to be introduced into the tub. In other words: It controls the water fill levels during the washing phases. It acts as an anti-boiling safety device when connected in series to the heating element.

  • Page 37: Electrical Symbol

    Operating principle Tub empty Water flows into the tub Water is drained from the tub As there is no water in the tub, When the connection between the As the level of water in the tub there is no pressure on the tub and the pressure chamber is diminishes, the pressure exerted diaphragm, which thus remains in...

  • Page 38: Analogue (Electronic) Pressure Switch

    5.6 Analogue (electronic) pressure switch 5.6.1 General characteristics The electronic pressure switch is an analogue device whose function is to control the level of water in the tub; it is used in certain models with electronic control systems (EWM2000EVO – EWM3000NEW). The electronic circuit is connected directly to the main PCB.

  • Page 39: Electrical Symbol

    5.6.3 Electrical symbol 5.6.4 Circuit diagrams and operating frequency Version for EWM2000EVO EWM3000NEW control system 5.6.5 Checking for efficiency In the event of a fault in the pressure switch, the operation of the appliance is immediately interrupted. Where possible, always read the alarm code. Possible alarm codes caused by faults in the pressure switch: EWM2000-EWM3000NEW: E31, E32,E33, E34, E35 39/60...

  • Page 40: Induction (Asynchronous) Motors

    5.7 Induction (asynchronous) motors 5.7.1 General characteristics The function of the motor is to rotate the drum at different speeds: high speed for the spin phases low speed for the wash phases The primary characteristics of these motors is that they do not require a start-up current. Instead, the current in the rotor builds up by induction, hence the name "induction"...

  • Page 41: Commutator Motor

    5.8 Commutator motor 5.8.1 General characteristics Commutator motors are fitted to appliances with spin speeds of between 600 and 1,600 rpm. 1. Stator 2. Terminal block 3. Commutator 4. Tachometric generator magnet 5. Tachometric generator coil 6. Brush 1. Stator 2.
  • Page 42 5.8.2.1 Control of the speed of the motor Speed control is obtained by using an electronic control system to vary the voltage (V) applied to the motor. The technique used consists of a "phase division" performed by the Triac. A Triac is a bi-directional electronic switch.

  • Page 43: Electrical Symbols

    5.8.2.3 Tachometric generator As in all motors powered in series, the speed of the commutator motor depends on the load. In other words, its speed diminishes as the load increases. This makes it necessary to ensure that the power voltage to the motor, and therefore its speed, be constantly controlled by an electronic speed control system.

  • Page 44: Circuit Diagram

    5.8.4 Circuit diagram P = Motor overload cut-out R = Rotor S = Stator T = Tachometric generator 5.8.5 Checking for efficiency 1. Check the connector blocks (wiring) and check for any bent or detached terminals. 2. Check for traces / residue / deposits of water or detergent and identify their source. 3.

  • Page 45: Heating Element

    5.9 Heating element 5.9.1 General characteristics The heating element that heats the washing water is encapsulated, i.e. inserted into a watertight stainless steel tubular casing. 1. Heating element (1950W) 2. NTC sensor 5.9.1.1 Seal The seal between the tub and the heating element is provided by a seal which expands against the nut. 1.

  • Page 46: Ntc Temperature Sensor Integrated In The Heating Element

    5.10 NTC temperature sensor integrated in the heating element 5.10.1 General characteristics In the electronic models an NTC sensor is used to control the washing temperature. In these sensors, the internal resistance decreases as the temperature increases. This reduction in resistance is detected by the electronic control system which, when the desired temperature is reached, disconnects the heating element.

  • Page 47: Drain Pump

    5.11 Drain pump 5.11.1 General characteristics The function of the drain pump is to discharge the water at the end of each phase of the washing cycle. These centrifugal pumps are actioned by a synchronous motor. 1. Impeller 2. Rotor 3.

  • Page 48: Circulation Pump

    5.12 Circulation pump 5.12.1 General characteristics Jetsystem models are fitted with a synchronous circulation pump which continuously circulates the water from the filter body into the tub through the bellows seal. 5.12.2 Electrical symbol 5.12.3 Checking for efficiency NO RE-CIRCULATION - POOR WASHING RESULTS Check that the impeller is not jammed and check for slippage.

  • Page 49: Access To Components

    6 ACCESS TO COMPONENTS 6.1 Work-top a. Remove the two rear screws (1), push the work-top towards the rear of the appliance and detach. 6.1.1 Pressure switch a. Remove the work-top. b. Detach the wiring connectors. c. Press the anchor tabs (2) and pull towards the rear. d.

  • Page 50: Control Panel

    6.2 Control panel a. Remove the work-top. b. Extract the detergent drawer. (Fig.5) c. Remove the screws that secure the control panel to the control panel support. (Fig.6) d. Remove the lateral (b) screws which secure the control panel to the crosspiece and release the anchor tabs (a) from the support.

  • Page 51: Control/Display Board

    6.3.2 Control/display board The way in which these boards are fastened depends on the styling version. To access the board: a. Remove the control panel b. Release the PCB casing from the control panel or remove the screws. For further details, refer to the specific Service Manuals for the various types of electronic control systems. 6.3.3 Electronic pressure switch a.

  • Page 52: Door Safety Interlock

    6.4.3 Door safety interlock a. Remove the seal from the front panel. (Fig. 12) b. Remove the two screws which secure the door delay device to the front panel. c. Remove the door delay device. (Fig. 13) d. Remove the cover from the door delay device. 6.4.4 Bellow seal a.

  • Page 53: Rear Cabinet Shell

    6.5 Rear cabinet shell a. Remove the top. b. Remove the screws which secure the cabinet shell to the upper crosspiece. (Fig.17) c. Remove the screw head masking caps and remove the lateral screws which secure the cabinet shell to the base. (Fig.18) d.

  • Page 54: Detergent Dispenser

    6.5.3 Detergent dispenser a. Remove the rear cabinet shell. b. Unscrew the clamp and detach the tube from the detergent dispenser to the tub. c. Detach the steam venting tube from the tub (if present). d. Extract the detergent drawer. (Fig.25). e.

  • Page 55: Drum Pulley

    6.5.6 Drum pulley a. Remove the rear tub shell. b. Detach the drive belt from the pulley. c. Block the pulley in position and remove the screw. d. Remove the pulley. 6.5.7 Pressure chamber a. Remove the rear cabinet shell. b.

  • Page 56: Drum Shaft Bearings

    6.7.1 Drum shaft bearings If it is necessary to replace the bearings, the engineer may: replace the rear tub shell complete with bearings and sealing ring. replace the bearings and the sealing ring only. In the latter case: a. Remove the tub and the drum from the appliance. b.

  • Page 57: Drum Lifter

    6.8 Drum lifter The drum lifter can be removed from the interior for tubs in Carboran of type G23. Removal a. Insert a screwdriver into the following holes: ⇒ for G13 tubs, into the fourth hole in the lifter ⇒ for G10-G11-G12-G18-G19 tubs, into the third hole in the lifter ⇒...

  • Page 58: Access To The Pumps/Manifolds

    6.9 Access to the pumps/manifolds Important! Do not fit the circulation pump in place of the drain pump and vice versa! 6.9.1 Drain pump (standard version) To access the drain pump, it is not necessary to remove the rear cabinet shell. The pump can be accessed from the base. a.

  • Page 59: Circulation Pump

    6.9.3 Circulation pump Access to the pump is from the base of the appliance: a. Remove the two screws which secure the pump to the base. b. Detach the circulation pump assembly from the base. c. Loosen the clamps and detach the hoses from the pump (Fig. 40). d.

  • Page 60: Front Cabinet Shell

    6.10 Front cabinet shell a. Remove the top. b. Remove the control panel. c. Remove the door. d. Detach the bellows seal from the front panel. e. Remove the two screws which secure the door delay device to the front panel. Remove the rear shell g.

This manual is also suitable for:

Nexus 6000 series

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