SERVICE MANUAL DISHWASHERS DISHWASHER ELECTROLUX ZANUSSI S.p.A. Spares Operations Italy Corso Lino Zanussi,30 I - 33080 PORCIA /PN (ITALY) Fax +39 0434 394096 Publication number 599 38 72-30 DIVA F. S. - Free-standing B. I. - Partially integrated F. I. - Fully integrated EN Basic characteristics Edition: 2007.
SOI/TD - PR 2/32 599 38 72-30
TABLE OF CONTENTS 1 2 3 4 5 6 7 INTRODUCTION ........................................................................................................................................................4 1.1 PURPOSE OF THIS SERVICE MANUAL ............................................................................................................4 1.2 PRESENTATION..................................................................................................................................................
1 1.1 INTRODUCTION 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 dishwashers, with information of a general nature regarding the new "DIVA" range of dishwashers. The aspects described in this document relative to the structural and hydraulic characteristics and the basic circuits are common to all the appliances in the range, both with electromechanical and electronic control systems.
1.2 PRESENTATION NEW TECHNOLOGY: DISHWASHERS CREATED WITH COMPUTER-AIDED DESIGN SYSTEMS AND BUILT USING MODERN INDUSTRIAL TECHNOLOGY. RESULT: Drawing on our vast experience and resources, combined with the latest technical and structural techniques, we have produced this range of innovative appliances to meet the demands of a market that is constantly evolving. 1.2.1 MAIN CHARACTERISTICS 1.2.1.1 1.2.1.2 - 1.2.1.
1.3 GENERAL CHARACTERISTICS Power supply ⇒ 230 V / 50 Hz (limits 187−254 V) Total power absorption ⇒ 2300 W (with 2100 W heating element) Water supply ⇒ Min. / Max.
1.6 DEFINITION OF STYLINGS AND FUNCTIONS 1.6.1 Control panel: - DIVA_ ELM [electromechanical] Option key On/Off key • Structure Function Type of control Programmes FreeStanding / Built- in Electromechanical On/Off key 1 > 3_keys + knob 3 > 6_progr. Control panel: - DIVA_ EDW500 EDW500 DEFINITION OF FUNCTIONS 1.6.3 • Programme selector knob DEFINITION OF FUNCTIONS 1.6.
1.6.4 Control panel: - DIVA_ EDW1001EDW1001-EDW1100EDW1100-EDW1110 Control panel versions • DEFINITION OF FUNCTIONS 1.6.5 • HORIZONTAL VERTICAL Structure Function Type of control Programmes Free- Standing / Built- in EDW_1001 EDW_1100 EDW_1110 On/Off key 3 > 6_keys / leds 3 > 6_ progr. Control panel: - DIVA_ EDW1003 DEFINITION OF FUNCTIONS Structure Fully integrated 1.6.6 Type of control Programmes EDW_1003 On/Off key 3 > 6_keys / leds 3 > 6_ progr.
1.6.7 • Control panel: - DIVA_ EDW1503 DEFINITION OF FUNCTIONS Structure Function Type of control EDW_1503 3 > 6_ keys / leds Programmes On/Off key Fully integrated 3 > 6_ progr. + display 1.6.8 • DEFINITION OF FUNCTIONS 1.6.9 • Control panel: - DIVA_ EDW2000 Structure Function Type of control Programmes Free- Standing / Built- in EDW_2000 On/Off key 9_ keys / leds + display 6_ progr.
1.6.10 Control panel: - DIVA_ EDW25 EDW2500 • DEFINITION OF FUNCTIONS Structure Function Type of control Programmes Free- Standing / Built- in EDW_2500 On/Off key 11_ keys / leds + LCD 6_ progr. 1.6.11 Control panel: - DIVA_ EDW25 EDW2503 • DEFINITION OF FUNCTIONS Structure Function Type of control Programmes Free- Standing / Built- in EDW_2503 On/Off key 4_ keys / leds + LCD 6_ progr. 1.6.
1.7 STRUCTURAL CHARACTERISTICS This convertible modular dishwasher is designed for maximum flexibility, and can be installed in the FREE-STANDING or BUILT-IN versions. Structure Version Version MODULAR FREE-STANDING BUILT-IN By removing the work top, the dishwasher can be inserted beneath a sink or a preexisting work-top in marble or wood, on condition that the dimensions of the compartment are as shown in the figure.
2 STRUCTURAL CHARACTERISTICS The appliance consists of four main assemblies: - BASE - DOOR - TUB - HYDRAULIC SYSTEM These four assemblies are enclosed in a cabinet designed with the following removable parts: - Front panel (secured by two screws) - Two side panels (secured by six screws) - A work-top (free-standing versions only) secured to the structure by two screws at the rear. 2.1 BASE The specially-shaped base is moulded in sound-absorbing plastic material.
2.2.4 DOOR HINGE In galvanized pressed steel, with a series of mechanisms (springs, levers, spindles) which form the system of movement for aperture/closure of the door. - Secured externally to the two lateral uprights (D) by pressure-fitted couplings and screws with metric thread. - Hinges with different functional characteristics and settings are used, depending on the styling of the appliance. 2.2.4.
2.3 TUB The tub assembly consists essentially of a stainless steel tub and a series of sub-assemblies which form the load-bearing structure of the dishwasher. Two basic tubs have been designed, to suit the type of drying to be performed by the dishwasher. - The difference between the two lies in the presence or absence of a hole (*) in the rear section of the tub ceiling, to which the drying duct can be fitted.
2.4 HYDRAULIC SYSTEM The hydraulic system is common to all versions of the dishwasher, since its specific water softening function consists of a number of specific components. The only difference is the featuring or not of the water softening system. 2.4.1 HYDRAULIC PATH WATER INTAKE HOSE - Water intake from the mains supply circuit. FILL TANK - Passage of water into and out of the appliance. - Water deposit for regeneration, if featured.
3 HYDRAULIC AND FUNCTIONAL CHARACTERISTICS SHORT TANK Fill tank LONG TANK Turbo fan Drying duct Fill tank + Condenser Counter-weight (if featured) Base Heating element Washing pump Softener (if featured) SOI/TD - PR Sump Drain pump 16/32 599 38 72-30
3.1 WATER FILL TANK The water fill tank is a container in transparent moulded plastic consisting of two sections that are welded together. - Inside the tank, special chambers and ducts define the path taken by the water during the fill phase. - The fill tank is positioned in the left-hand section of the appliance, and is screwed into position from inside the tub using a fixing ring. - The softener regulation system, if featured, is built into the fixing ring, and is actioned by a knob.
3.3 SUMP ASSEMBLY The sump is a monobloc container in plastic material, and consists of three thermowelded sections: PRESSURE, WASHING and DRAIN. The sump is located on the bottom of the tub, with a perimetral sealing ring, and is secured from the inside by four screws. PRESSURE section (A) An integral part of the WASHING section, in which a double pressure chamber controls the level of the water.
4 ELECTRICAL COMPONENTS 4.1 TERMINAL BLOCK The terminal block consists of a junction box to which the power cable is connected; the wiring is then routed to the appliance's ON/OFF switch. The terminal block is pressure-fitted into a housing inside the base. A suppressor is built into the terminal block. The suppressor is an electrical device designed to filter out radio interference. Correct operation of the suppressor requires that the appliance be connected to an efficient ground connection. 4.
4.5 WASHING PUMP Single-phase asynchronous two-pole motor with a single direction of rotation. - Counter-clockwise rotation (seen from impeller side). - The hydraulic group (pump scroll casing, sealing rings and impeller) is clamped to the motor shield, with an internal sealing ring. - Secured to the base of the appliance by two supports in vibration-damping rubber. - Connected to the sump by rubber couplings. 4.5.
4.9 TUBE-ENCASED HEATING ELEMENT The heating element, which is encased inside a tube, is used to heat the washing water. The heating element is not activated during the drying phase. - Inserted into the delivery side of the washing pump and coupled with the duct which directs water to the upper spray arm. - Standard version for all the appliances in the range. - Heating power: 2,100 Watts.
4.13 INTEGRATED DISPENSER The integrated dispenser consists of a plastic container comprising B two separate sections which contain Detergent (A) and Rinse-aid (B). A - Fitted to the interior of the inner door and secured by two screws. - The dispenser uses a single electrical coil connected to a mechanical system and which performs both functions. - When the coil is energized, it actions the mechanism via a series of levers, thus introducing the contents in sequence (first detergent, then rinse-aid).
5 WASHING SYSTEM The washing system is of the traditional type in which the mechanical washing action is provided by the rotation of the washing pump. The pump ducts the water into the hydraulic circuit, thus actioning both spray arms simultaneously. In order to obtain the washing result, the system also requires features such as heating of the water, change of the water, introduction of detergent and rinse-aid etc.. All these functions are included in the washing cycle. 5.
6 HYDRAULIC CIRCUIT 6.1 PATH OF WATER INTAKE - "SHORT TANK" From the solenoid valve (2/3), the water is ducted into the fill tank and across the air break (5) into the regeneration chamber (7) until the chamber is full. Once the chamber is full to overflowing, and the softener system is featured, the water is divided into two parts through two separate channels. - One channel ducts the water directly into the softening system (9) (resin container), from where the softened water continues towards the sump.
6.2 PATH OF WATER INTAKE - "LONG TANK" From the solenoid valve (2/3), the water is ducted into the fill tank and across the air break (5) into the steam condenser (6) until the condenser is full. - When the condenser is full to overflowing, and the softener system is featured, the water is ducted through a channel into the regeneration chamber (7). In this case, too, once the overflow level is reached, the water is divided into two parts ducted through two separate channels.
6.3 WATER FILL SYSTEM - FUNCTIONAL DESCRIPTION In all versions of the dishwasher (electromechanical and electronic), the water fill system is constantly controlled by the level pressure switch, which acts as a pressure sensor. 6.3.1 DEFINITION OF WATER LEVEL The pressure switch is connected hydraulically to the sump, inside which an air trap (pressure chamber) is connected via a small tube in order to determine the level of water in the appliance.
6.5 WATER SOFTENING SYSTEM 6.5.1 SOFTENING PROCESS If featured, this softening system is based on the use of resins (organic synthesis substances) and a chemical process of ion exchange. This exchange takes place rapidly, i.e. as soon as the water comes into contact with the resins. The calcium and magnesium salts contained in the water are removed, while their sodium base is created.
6.5.3 WASHING THE RESINS On completion of the regeneration process, it is necessary to clean the softening circuit by washing the resins in order to remove any residual impurities. The water in the resin reservoir (9), which contains alkaline salts (calcium and magnesium) and sodium chloride, must be cleaned before the subsequent fill phase in order to ensure that it does not come into contact with the dishes or the internal parts of the appliance, since it is corrosive.
6.6 DEFINITION OF THE REGENERATION SYSTEM In all versions of the dishwasher (electromechanical and electronic), regeneration of the softener (duration 3 minutes approx.) is performed towards the end of the cycle, during the drying phase. 6.6.1 “BLENDING” FUNCTION This function is performed inside the fill tank during the water fill phase which, depending on the position of the selector, automatically blends the softened water with the unsoftened water present in the appliance.
7 DEFINITION OF THE DRYING CIRCUIT In these dishwashers, the dishes are dried by means of a steam condensation process. Depending on the type of appliance, one of three drying systems is used: - "NORMAL - DRY" drying - "ACTIVE - DRY" drying - "TURBO - DRY" drying 7.1 "NORMAL - DRY" DRYING DEFINITION OF THE SYSTEM The "Normal Dry" system is characterized by an integrated circuit which draws in and expels air to the exterior of the appliance.
7.2 "ACTIVE - DRY" DRYING DEFINITION OF THE SYSTEM The "Active Dry" system is characterized by an integrated closed circuit in which the hot air is circulated in a bi-directional convection movement onto a cold wall; no air is drawn in from the exterior.
7.3 "TURBO - DRY" DRYING SYSTEM The "Turbo Dry" system is characterized by an integrated closed circuit in which the hot air is circulated in a mono-directional convection movement onto a cold wall; no air is drawn in from the exterior.
