Table of Contents
Related Manuals for Electrolux 60 cm Series
Summary of Contents for Electrolux 60 cm Series
- Page 1 SERVICE MANUAL DISHWASHERS DISHWASHER NEW STRUCTURE © ELECTROLUX ZANUSSI Publication no. «60 cm» SERIES ELETTRODOMESTICI S.p.A. Corso Lino Zanussi I - 33080 Porcia (ITALY) 599 33 33-70/6 SOLARO- (MI) Fax +39 434 394096 970902 EN/SERVICE/FL...
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Page 3: Table Of Contents
INDEX PRESENTATION Page 5 - 6 CHARACTERISTICS 7 - 10 HYDRAULIC CIRCUIT 11 - 26 HYDRAULIC CIRCUIT COMPONENTS BASE 12 - 13 I W M S WATER FILL 14 - 15 WATER FILL CONTROL SYSTEM 16 - 17 WATER SOFTENING SYSTEM 18 - 19 REGENERATION SYSTEM 20 - 23... - Page 4 PURPOSE OF THIS SERVICE MANUAL The purpose of this Service Manual is to provide service technicians, who are already trained in the repair of traditional dishwashers, with general and specific technical information concerning the new range of dishwashers known as "NEW STRUCTURE". The structural and hydraulic characteristics, as well as the basic circuits, are common to all appliances.
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Page 5: Presentation
PRESENTATION NEW TECHNOLOGY: A NEW DISHWASHER DESIGNED USING THE MOST ADVANCED COMPUTER TECHNOLOGY AND BUILT USING THE LATEST INDUSTRIAL TECHNOLOGY. RESULT: The technological and production solutions used in the production of the new dishwasher, together with concerted efforts on the part of the design team, have resulted in the creation of a truly innovative range of appliances that will meet the demands of a market that is in continuous evolution. - Page 6 "NEW STRUCTURE 60 cm" DISHWASHERS RANGE: TRADITIONAL VERSIONS SERIES FEATURES BASIC / STANDARD Version Functions FREE-STANDING CAR / TCR Partially built-in Electromechanical TIMER Fully built-in 1 / 2 buttons 4 / 6 washing programmes 1 / 2 washing temperatures Programme selector knob 5 regeneration levels MEDIUM / DE LUXE Version...
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Page 7: Characteristics
STRUCTURAL CHARACTERISTICS STRUCTURE: 60 cm LOAD CAPACITY: 12 PLACE-SETTINGS VERSIONS STANDARD MEDIUM DE LUXE ITRONIC CONSUMPTION* WATER Litres ELECTRICITY DETERGENT grammes DURATION OF CYCLE Min (2,100W) 94 * The data shown refer to the UNIVERSAL cycle. - 7 -... - Page 8 STRUCTURE - 8 -...
- Page 9 INTERIOR OF TUB / SUMP - 9 -...
- Page 10 HYDRAULIC/ELECTRICAL COMPONENTS - 10 -...
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Page 11: Hydraulic Circuit
HYDRAULIC CIRCUIT Anti-flooding device Tank for volumetric control Fill solenoid valve 15 Reset solenoid valve Anti-overflow device 16 Anti-overflow system Regeneration adjustment (manual) 17 Level control device (pressure switch) Air-break 18 Resin washing collector tank Regeneration tank fill valve 19 Breather valve for resin washing tank Regeneration tank 20 Sump assembly Salt tank... -
Page 12: Hydraulic Circuit Components
HYDRAULIC CIRCUIT COMPONENTS The hydraulic system consists essentially of two principal components: the BASE, whose function is to contain the liquids IWMS, whose function is to soften the water. BASE As well as acting as the load-bearing structure for the appliance, the base also contains the hydraulic components. - Page 13 The following components are fitted to the base: SUMP ASSEMBLY: The sump is a container fitted with special ducts which collect and distribute the water for washing the dishes. The sump is connected by a series of ducts to the IWMS, the feed ducts to the two spray arms, and the drain outlet.
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Page 14: Iwms
IWMS The IWMS is an integrated water softening system which controls: WATER FILL CIRCUIT WATER FILL CONTROL SYSTEM WATER SOFTENING SYSTEM WATER DRAIN CIRCUIT STEAM VENTING SYSTEM WATER FILL CIRCUIT The water fill circuit is considered to be in "NORMAL" operating condition when: The fill solenoid valve is powered electrically The pressure switch is in the "EMPTY"... - Page 15 WATER FILL CIRCUIT - 15 -...
- Page 16 WATER FILL CONTROL SYSTEM This system controls the path taken by the water during the fill cycle within the IWMS, from the water intake through the fill solenoid, along the entire internal circuit, and until the water reaches the tub. The control system consists of the following sub-systems: VOLUMETRIC CONTROL OF WATER FILL CONTROL OF WATER LEVEL IN THE TUB...
- Page 17 LEVEL CONTROL CIRCUIT - 17 -...
- Page 18 WATER TREATMENT SYSTEM The water treatment system performs two functions: it softens the water (i.e. removes the calcium and magnesium) by means of ion-exchange resins, and regenerates the resins by adding sodium chloride. The system consists of the following components: Resin tank Adjustable-volume regeneration water tank Regeneration level regulation device...
- Page 19 WATER SOFTENING CIRCUIT - 19 -...
- Page 20 RESIN REGENERATION AND WASHING CIRCUIT During this phase, the regeneration solenoid valve (9) and the resin washing solenoid valve (10) are actioned simultaneously. The water deposited in the regeneration tank (7) descends (by gravity) to the salt tank (8), which is positioned in the base of the appliance.
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Page 21: Regeneration System
REGENERATION SYSTEM: CIRCUIT DIAGRAM - 21 -... - Page 22 CONTROL OF REGENERATION VOLUMES Four volumes of water are utilized for regeneration, totalling approximately 300 cc. Depending on the type of dishwasher, regulation and exclusion of the regeneration system are performed in different ways. DW WITH ELECTROMECHANICAL TIMER Regeneration is performed during every washing cycle. REGULATION PROCEDURE Five different levels of regeneration can be selected, each using a different quantity of water which is controlled by the aperture or closure of a series of special valves.
- Page 23 REGENERATION TANK - FUNCTIONAL DIAGRAM DISHWASHERS WITH MANUAL CONTROL SYSTEM: Valves A, B and C may be open or closed, and are connected to the respective dosing chambers (a, b and c); chamber d is independent (not adjustable). If the valve is open, the corresponding dosing chamber is filled during the water fill cycle. If the valve is closed, the corresponding dosing chamber remains empty.
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Page 24: Water Drain Circuit
WATER DRAIN CIRCUIT The drain circuit is in "NORMAL" operating condition when: The motor is ON: drain cycle. The non-return valve is open. The sump bottom valve is open. The valve which separates the resin washing water is open. The breather valve on the resin container is closed. OPERATION OF THE CIRCUIT During the drain cycle, the motor operates in reverse direction (clockwise as seen from the impeller side), thus draining the sump (20). -
Page 25: Steam Venting
STEAM VENTING The steam venting chamber is connected directly to the tub, and performs several functions: During the water fill cycles, it transfers to the tub any water that is dispersed as it passes through the air break, as well as any excess water from the regeneration tank when this is full, and a small quantity of water which overflows from the volumetric flow switch. -
Page 26: Hydraulic Safety Systems
HYDRAULIC SAFETY SYSTEMS The hydraulic safety systems detect any possible malfunctions in the hydraulic circuits or leakage in any of the components. The safety devices are electromechanically and hydraulically operated, and remain in operation throughout the washing cycle and, in some cases, even when the appliance is switched off. The safety systems are fitted to dishwashers with both electromechanical and electronic timers. -
Page 27: Functional Features
OPERATION .CONTROL PANEL (DW WITH ELECTROMECHANICAL TIMER) "ON/OFF" button Switches the appliance ON and OFF. Prepares the appliance for selection of the washing programme. The LED lights to indicate that the appliance has been switched on. "ECO" button When pressed, the ECO button reduces the temperature of the water from 65°C to 55°C. "I"... -
Page 28: Electrical Circuit Diagrams
FUNCTIONAL CIRCUIT DIAGRAM STANDARD TIMER - 28 -... - Page 29 TIMER OPERATION STANDARD - 29 -...
- Page 30 FUNCTIONAL CIRCUIT DIAGRAM MEDIUM / DE LUXE TIMER - 30 -...
- Page 31 TIMER OPERATION MEDIUM / DE LUXE - 31 -...
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Page 32: Control Panel (Dw With Electronic Timer)
FUNCTIONS CONTROL PANEL ("ITRONIC" DW WITH ELECTRONIC TIMER) "ON/OFF" BUTTON Switches the appliance on and off. Prepares the appliance for the Programme Selection phase. "SALT" LED (red) Lights when the salt tank requires topping up. "DIGIT" window (green) Displays the programme number (1 to 9) Displays the delayed-start countdown in hours (from 0 to 9) Displays a flashing decimal point when the delayed start option has been selected Displays a flashing hyphen when the programme has ended... -
Page 33: Selecting Water Hardness Level
"ECO DRYING" button Press to exclude the drying function. The LED lights when ECO DRYING has been selected. Press again to reset the appliance to normal drying. The LED switches off. "ECO DRYING" LED (green) ON: ECO DRYING activated OFF: ECO DRYING disactivated "DELAYED START"... -
Page 34: Electrical Circuit Diagrams
FUNCTIONAL CIRCUIT DIAGRAM "ITRONIC" - 34 -... - Page 35 CYCLE SEQUENCE "ITRONIC" - 35 -...
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Page 36: Functional Characteristics Of The Controls
FUNCTIONAL CHARACTERISTICS OF THE CONTROL ORGANS The functional characteristics of the programme are subdivided into three sequential phases: PROGRAMME SELECTION PROGRAMME EXECUTION END OF PROGRAMME. A BUZZER sounds at different frequencies during each phase to indicate that the options selected have been accepted. - Page 37 "SALT" LED The "SALT" LED lights to indicate that the salt tank requires filling. If the water hardness level is set to "0", this LED remains off (since level "0" requires no salt). "BUZZER" The BUZZER is programmed to sound in certain phases. The BUZZER can be disactivated or reactivated at any time (even while a programme is in progress) using a combination of two buttons: DISACTIVATING THE "BUZZER"...
- Page 38 START (excluding setting of "DELAYED START") When the door is closed, the selected programme starts automatically, i.e. the appliance passes from the Programme Selection phase to the Programme Execution phase. A short buzz (1 second) confirms that the programme has started. PROGRAMME EXECUTION WHEN THE DOOR IS OPENED: The programme is interrupted and the current phase is stored in memory.
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Page 39: Safety Systems
SAFETY CONTROL SYSTEMS (ELECTRONIC DISHWASHERS ONLY) Special electronic (software) control routines constantly monitor the execution of the programme in order to ensure that each of the functions is performed correctly; the control routines intervene automatically in case of a malfunction. In addition, the following safety systems are in operation during programme execution: PROGRAMME BEING EXECUTED When the door is closed, the washing programme starts and the various selections cannot be modified. -
Page 40: Safety Systems
ALARMS (ITRONIC "HL") The intervention of one of the safety systems is signalled in the DIGIT window by an Alarm Code in the form of a flashing letter. If an Alarm Code is displayed in the DIGIT window while a programme is in execution, the dishwasher stops (i.e. - Page 41 WATER FILL Time-out SITUATION The maximum duration of the water fill phase is 5 minutes. The time-out counter starts at the beginning of each fill phase, and ends when a "full" signal is received from the pressure switch (1 - 3). If the time required for the pressure switch Appliance: STOPPED...
- Page 42 PRESSURE SWITCH "EMPTY" Time-out SITUATION (waiting for correct temperature) Conditions: This safety system is operative only while the appliance is waiting for the correct temperature to be reached (water heating phase), excluding the drying phase. If the pressure switch is reset to "empty" (1 - 2) Appliance: STOPPED the maximum time required to receive the "full"...
- Page 43 WATER HEATING Time-out SITUATION The maximum duration of the water heating phase is 45 minutes, irrespective of the temperature for the selected cycle. The time-out counter starts at the beginning of each water heating phase (i.e. when the heating element switches on), and ends when the correct temperature is reached.
- Page 44 TABLE OF ALARM CONDITIONS The table below shows the meanings of the various Alarm Codes which may appear in the DIGIT window and the possible causes of each. ALARM CODE TIME-OUT POSSIBLE CAUSES - Tap closed - Mains water pressure too low WATER FILL - Fill hose filter obstructed - Solenoid valve inoperative...
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Page 45: Trouble-Shooting
TROUBLE-SHOOTING CHECKING THE EFFICIENCY OF THE COMPONENTS For the trouble-shooting procedure, the modular wiring connector fitted to the base of the appliance can be used (after removing the connector from the socket) to measure the resistance and thus the efficiency of the various components fitted to the appliance.