SERVICE MANUAL DISHWASHERS - M
Contents
1. taunted 12 COMMUNI Ga 14 24 HYDRAUBIOC 5 TOTEM acs uae eater Nolte tacent tolto xt tbid Lade tare 15 HYDRAULIC AND FUNCTIONAL CHARACTERISTICS nennen 16 1 WATER RILE TANK quoc SS an ena um Saku Sau SSS 17 22 AMATEBRHSOPTENING a 17 estela i min ER RENE o UU RT 18 47 DRONG O 18 4 19 AA a m u 19 VS IILSINEG t 19 Um EE 19 Z4 EACH ASSEMBLY 19 45 WASFINGPUNMPIu u c P 20 1 0 GAPAGILIO Me I E 20 LATENT NIME Er 20 4 8 PIEL SOEENOID VABWVE u x 2222 i er es epa eta tt auo aee hasa tutes severe 20 49 TUBE ENGASED HEATING ELE WEN T uu u u uuu u u ua usun bota algae 21 410 TEMPERATURE THERMOSIAT uu u u iussu ise a 21 amp2. upper side the drying duct and if featured the fan bottom the sump assembly and the water softening system if featured Internally either side the two guides in which the upper basket slides Atthe rear the horizontal manifold which ducts water to the upper spray arm SOI TD PR 14 32 599 38 72 30 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 SOFTENING SYSTEM if featured Passage of water for softening process Passage of water for regeneration process SUMP Collects water for the washing process and deposits for drainage FILTER GROUP Filters the washing water in circulation and retains any dirt LOWER SPRAY ARM DUCT Ducts water to the lower basket UPPER SPRAY ARM Ducts water to the upper basket 2 4 2 DIFFERENCES IN THE HYDRAULIC CIRCUIT ACCORDING TO THE TYPE OF DRYING SYSTEM Although the functional principle of the hydraulic system is identical for all versions the single exception is the fill tank which differs according to the type of drying system TRADITIONAL ACT
3. The variable functions are optional and are controlled by supplementary keys or by direct wiring connections according to the requirements of the specific market SOI TD PR 23 32 599 38 72 30 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 A smaller quantity of water is collected in one of the channels for use in the Blending function refer to section 6 6 Definition of the Regeneration System where it is ducted directly into the tub through the steam venting ring Lj i With Softener Without Softener 1 Fill hose SOI TD PR 24 32 599 38 72 30 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
4. The door is in enamelled sheet steel and is secured to the inner door by six screws around the perimeter and two lateral screws certain stylings free standing a perimetral surround is fitted for application of a front d cor panel The doors of built in appliances have holes slots and shaped sections for application of an outer door in wood SOI TD PR 12 32 599 38 72 30 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 41 CHARACTERISTICS amp FUNCTIONS Aperture and closure of the door is by means of a pair of self adjusting hinges A and a tensioning spring B The movement is self balancing and features an automatic braking system The self balancing system consists of a helical spring which is calibrated to a fixed setting The calibration depends on the overall weight of the door fitted to the appliance The helical spring is secured to the upper extremity of the upright and to the hinge mechanism The automatic braking system consists of a mechanical clutch The clutch consists of a sliding element C fitted to the hinge mechanism which during ape
5. in transparent plastic The container is subdivided into two sections which communicate through internal ducts and contain the salt and the resin The container is positioned in the base of the appliance and screwed to the tub from the inside by a fixing ring The container is connected to the water fill tank by two O ring connectors tis also connected to the sump by an outlet duct The following components are fitted externally to the container The salt sensor A The regeneration solenoid valve B A normally closed separation valve is installed inside the container and serves to separate the two sections The valve opens as a result of the pressure exerted by the water during the regeneration process when the regeneration solenoid valve 4 opens SALT reservoir The salt reservoir contains the salt used for regeneration and is accessible for filling The salt sensor A indicates to the user that the salt reservoir requires topping up The sensor consists of a reed sensor positioned externally to the reservoir and a magnetic float inside the reservoir The sensor is connected electrically to the SALT LED on the control panel in versions with electromechanical control in electronic versions it is connected directly to the PCB RESIN reservoir This sealed reservoir contains the resins organic substances used to purify the water The regeneration solenoid valve B
6. OF REGENERATION LEVELS Number of Water filled in Opening of HARDNESS OF Set up of Softener acoustics between two Regeneration TREATED WATER signal if regenerations solenoid Manual Eletronichal featured litres F TH D dH LX j 1 9097 95 2 1 __ 2 JX D 2 130 240 8 gt 18 4 gt 10 3 1 J J 3 94 20 9 19 gt 25 11 gt 14 4 1 4 4 70 240 26232 15 gt 18 8 2 5 2 5 53 j 20 33 gt 3 19 gt 22 6 2 6 6 437 p 240 J 40 50 23 28 8 2 8 15 240 J 65 75 37 gt 42 9 2 9 9 210 240 76 gt 90 43 gt 50 10 2 140 X j 10 3 2x240 91 gt 125 51 gt 70 6 6 3 SELECTING THE LEVEL OF REGENERATION Electronic versions In electronic dishwashers regeneration is performed as and when necessary For further details regarding this process refer to the function Service Manuals for these versions of the dishwasher SOI TD PR 29 32 599 38 72 30 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 ai
7. Tp DEMPERADIURE SENSOR S uuu toto ee 21 412 TEMPERATURE SENSOR TURBIDITY 21 4 13 INTEGRATEDDISPENSE uuu e uU 22 4 14 LEVEL amp ANTI OVERFLOW PRESSURE 22 AAS YANTIEFLOOBDING DE VIC E C MPH 22 ETT c e A 23 S T DEFINITION OFTHE WASHING CYCLE uuu k es E usu S sese 23 6 HYDRAULIC uci c Mc EP 24 61 PATH OF WATER INTAKE SHORT 24 62 PATH OF WATER INTAKE s LONG TANK IRAE tcu ud 25 6 3 WATER FILL SYSTEM FUNCTIONAL DESCRIPTION 26 6 4 ANTFOVERFLOW SAFETY DEVE uuu de usa um eats tas 26 6 5 WATER SOFTENING SYSTEM us tuli cete beside te ede Soo aaa aoaaa Das Pec d ut 27 65 JBEFINITION OE THE REGENERATION SYSTEM uuu uu utate a a 29 DEFINITION OF DRYING CIM R L Q L E SA ua tuto
8. level is reached the water is divided into two parts ducted through two separate channels Part of the water passes through one channel directly to the softener 9 resin container from which the softened water continues towards the sump A smaller quantity of water is collected in one of the channels for use in the Blending function refer to section 6 6 Definition of the Regeneration System where it is ducted directly into the tub through the steam venting ring N B The steam condenser 6 once full of water remains filled With each subsequent fill the incoming water replaces the water previously present in the condenser The steam condenser 6 is drained through the fill hose 1 2 by a vacuum effect after W Ori ONY Without Softener KEY 1 Fill hose 11 Anti overflow pressure switch 2 Fill hose with Aquacontrol device 2 Sump assembly 1 3 Fill solenoid 13 Washing pump 4 Regeneration solenoid 14 Tube enclosed heating element 5 Air Break 15 Drain pump 6 Steam condenser 16 Non return valve i 1 1 7 Regeneration chamber 7 Drain hose 8 Salt reservoir 8 Drying duct Fan 9 Anti flooding device 10 Level pressure switch CTO SOI TD PR 25 32 599 38 72 30 6 3 WATER FILL SYSTEM FUNCTIONAL DESCRIPTION In all versions of the dishwasher electromechanical and electronic the water fill system is constant
9. panel DIVA EDW2003 INTENSIV ECO AUTO matic _ 3OMIN CARE afe 50 SENSORLOGIC TURBODRY DEFINITION OF FUNCTIONS On Off key Free Standing Built in EDW 2003 7 keys leds 6 progr display SOI TD PR 9 32 599 38 72 30 1 6 10 Control panel DIVA EDW2500 OPTIONS i i 7 r 11 B i H TL Jini T RUNE DEFINITION OF FUNCTIONS Structure Type of control Programmes On Off key Free Standing EDW 2500 11 keys leds 6 progr Built in LCD 1 6 11 Control panel DIVA EDW2503 DEFINITION OF FUNCTIONS Structure Type of control Programmes Free Standin 9 EDW 2503 4 keys leds 6 progr 1 6 12 Control panel DIVA EDW2000 VISI L O o P AUTOMATIC PLUS ECO AMMOLLO Bh DEFINITION OF FUNCTIONS Structure Type of control Programmes Free Standing EDW_ 2000 On Off key 4 proar Built in VISI 3 keys leds Progr SOI TD PR 10 32 599 38 72 30 1 7 1 7 1 LD OI ob oo p 10 11 STRUCTURAL CHARACTERISTICS This convertible modular dishwasher is designed for maximum flexibility and can be installed in the FREE STANDING or BUILT IN versions Version FREE STANDING Structure MODULAR By removing the work top the dishwasher can be inserted beneath a sink or a pre existing work top in marble or wood on condition th
10. present in the sump Therefore in case of a malfunction in the hydraulic circuit and if the water level exceeds the pre determined safety threshold the pressure switch intervenes by switching the electrical contact to full 6 4 1 INTERVENTION OF THE ANTI OVERFLOW DEVICE The safety pressure switch commutates to full which immediately activates the drain pump which is connected electrically downstream of the circuit the pump remains in operation until the safety thermostat returns to empty Versions with electromechanical control The washing cycle continues in any case malfunction is caused by a temporary fault leakage from the solenoid valve excessive foam etc which ceases to exist during the cycle the user is unlikely to be aware that the fault has occurred f the fault persists water will remain in the tub at the end of the cycle and the drain pump will switch on and off alternately since it is controlled by the pressure switch which cycles between full and empty The connections for the anti overflow system are shown in the uh d diagram opposite B If the appliance is switched off using the ON OFF bi switch at the end of the cycle the drain pump ini T switches off n order to ensure that the anti overflow safety device remains in operation even when the dishwasher is not in use 1 the machine must remain connected to the power supply and 2 the ON OFF switch must be
11. 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 5 1 2 1 6 STRUCTURAL CHARACTERISTICS Modular and convertible in three versions Free standing Partially built in Fully built in Monobloc load bearing base in sound absorbing plastic material Two removable side panels Styling variable to meet the various configurations requested Simplification of free standing and built in installation On built in models the rear foot can be adjusted from the front of the appliance HYDRAULIC CHARACTERISTICS Newly designed integrated hydraulic circuit New integrated sump New water softening system if featured Softening of regeneration water up to 90 F 50 D if featured Optimization of the regeneration system with 5 to 10 levels of regeneration if featured Manual regulation of the regeneration level if featured on electromechanical models software regulation for electronic models ELECTRICAL CHARACTERISTICS New washing pump motor New drain pump motor New types of timer New types of electronic boards PCB CONTROL AND SAFETY SYSTEMS Measurement of water temperature by means of thermostats or temperature sensors for electronic models Measurement of water fill level by means of a pressure switch Anti overflow safety system using a pressure switch Anti l
12. water Constantly transmits the temperature of the water to the electronic control system Consists of an NTC sensor whose resistive value decreases as the temperature of the water increases 4 12 TEMPERATURE SENSOR TURBIDITY SENSOR If featured it s used in versions with electronic control high end appliances to control both the temperature and the turbidity of the washing water Positioned externally on the sump in direct contact with the water Fitted with an NTC sensor for control of the temperature Fitted with an infra red system for control of the turbidity of the water i e the quantity of dirt in the water Constantly transmits the two signals to the electronic control system for processing correctly combining the signals received from the two sensors NTC and turbidity enables the appliance to perform automatic washing cycles which automatically optimize the washing cycle according to the type of load the quantity of the load and the degree of soiling 4 12 1 1 TURBIDITY DETECTION SYSTEM This consists of a reading process which takes place during the cycle according to the signals received from the turbidity sensor by the electronic control system The signal is transmitted by the sensor and enables the control system to identify the status of the cycle 1st reading during Pre wash phase Determines whether the pre wash drain cycle is performed If the drain cycle is performed the wash
13. water is circulated through the resin reservoir 9 and from there to the sump the circuit described in sections 4 1 4 2 Path of the fill water is repeated Drain pump 15 When the drain pump is switched on the water ducted to the bottom of the sump 12 is immediately drained as it arrives without coming into contact with the dishes 6 5 3 2 RESIN WASHING PROCEDURE In all versions of the dishwasher electromechanical and electronic the resin washing procedure duration 30 seconds approx is performed at the beginning of each washing cycle n effect the salty water solution regeneration water remains deposited in the resin reservoir from the end of the last cycle until the beginning of the subsequent cycle SOI TD PR 28 32 599 38 72 30 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 n practice the softened water is introduced into the appliance through the softening system while the unsoftened water flows via an open by pass duct directly through the steam venting ring ma
14. when actioned performs the regeneration process cleaning of the resins SOI TD PR 17 32 599 38 72 30 3 3 3 4 3 4 1 SO 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 WASHING section B Located beneath the main stainless steel filter this section collects the filtered water which is then re introduced clean into the circuit and ducted to the spray arms Direct hydraulic connection to the lower spray arm DRAIN section C Located beneath the circular filter in the bottom of the sump where the dirt is deposited before being drained Housing for the drain filter Four ball valves built into the sump perform a number of specific functions Pressure switch pressure valves 2 Positioned inside the respective pressure chambers n case of tilting of the appliance the valves prevent the residual water in the sump from entering the connections of the two pressure switch tubes Drain pump breather valve his valve is located internally near the drain pump breather During the water fill phase the valve opens and maintains the drain circuit open s
15. 32 599 38 72 30 4 ELECTRICAL COMPONENTS 4 1 4 2 4 3 4 4 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 PUSHBUTTON The pushbutton array consists of one or more modular buttons maximum 4 in a single block the individual buttons are pressure fitted into a metal support The pushbutton array is located inside the control panel and secured by two screws The pushbuttons are of two types with different functions Switch two pole for the ON OFF key Deviator single pole two pole for the Option keys TIMER The timer is a timer controlled electrical device which controls the duration and the execution of the operations that comprise the washing cycle All the user components solenoid valve pump heating element etc are connected electrically to the timer by means of a specific wiring harness The signals to the user components are transmitted via the contacts switching fitted to a lateral support and actioned by a series of cammes The movement of the cammes is transmitted by a synch
16. 4 Electrolux Distriparts OELECTROLUX ZANUSSI S p A Spares Operations Italy Corso Lino Zanussi 30 33080 PORCIA PN ITALY Fax 39 0434 394096 Edition 2007 03 SOI TD PR Publication number 599 38 72 30 EN 1 32 SERVICE MANUAL DISHWASHERS DISHWASHER DIVA S Free standing l Partially integrated F B F I Fully integrated Basic characteristics Production ZM Solaro ITALY 599 38 72 30 SOI TD PR 2 32 599 38 72 30 TABLE OF CONTENTS 1 INTRODUC TON rr cr e 4 LA PURPOSE OF VAIS SERVICE MANUAL yu u uu u em 4 to SPISESEBNTATION GE intus shua maaan a eL 5 ded GENERAL GHAR AGC TER TGS u u u e duet cena eda eat 6 l4 OP APPLICATIONZu mu ce m 6 ELECTRONIC MODULE u e a E amas nante M aud tes ea 6 1 6 DEFINITION OR STYLINGS AND FUNCTIONS tieni iino uem t de 7 SSTIRUGTIORALGHARAGTERISEIGS uu L uqa dede 11 2 STRUCTURAL CHARACTERISTICS arn repu ve ence eo epee eee eo nur er eter oe 12 Dp du iM UE LLL M DE Lu lebe e CLP INL LO I LN LOL HL cL EE 12 22 BOOR C E
17. A EDWS503 65 BREVE _ I FINE CICLO BRILLANTANTE MEZZO T NTENSIVO 4 NORMALE 50 ECO ACCESO carico x sa ERN SELEZIONE Pnoch O S SALE lt DEFINITION OF FUNCTIONS Free Standing On Off key 599 38 72 30 7 32 SOI TD PR 1 6 4 Control panel DIVA EDW1001 EDW1100 EDW1110 Control panel versions HORIZONTAL gt VERTICAL DEFINITION OF FUNCTIONS EDW 1001 ff k Standing Epw 1100 COEM vs leds 3 gt 9 Progr EDW 1110 1 6 5 Control panel DIVA EDW1003 Control panel versions gt HORIZONTAL gt VERTICAL DEFINITION OF FUNCTIONS Structure Type of control Programmes Free Standing EDW_1500 4 i is Built in EDW 1510 ey Progr display SOI TD PR 8 32 599 38 72 30 1 6 7 Control panel DIVA EDW1503 DEFINITION OF FUNCTIONS Structure Function Type of control Programmes On Off key Fully integrated EDW 1503 3 gt 6_ keys leds gt 6 progr display 1 6 8 Control panel DIVA EDW2000 rie di O An ees a DEFINITION OF FUNCTIONS Structure Function Type of control Programmes Free Standin Neid Key IB 9 EDW 2000 9 keys leds 6 progr uilt in display 1 6 9 Control
18. IVE amp ACTIVE TURBO SOI TD PR 15 32 599 38 72 30 3 HYDRAULIC AND FUNCTIONAL CHARACTERISTICS SHORT TANK Fill tank LONG TANK 3 Turbo fan Drying duct Fill tank Condenser Counter weight if featured Base Heatinc element 6 Softener Washing pump if featured Sum P Drain pump SOI TD PR 16 32 599 38 72 30 3 1 3 2 WATER SOFTENING SYSTEM if featured h 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 The water fill tank is one of the main functional parts of the hydraulic circuit LONG TYPES OF TANK SHORT KEY A Water fill chamber and regeneration volume B Regulation system for softening circuit C Steam venting chamber D Steam circulation chamber E Steam condensation chamber The following functions are involved SYSTEM OF FILL WATER INTAKE TREATMENT SYSTEM FOR REGENERATION WATER CONDENSATION OF STEAM If featured the water softening system consists of a monobloc container
19. RATION electronic Control system gt TIMER electromechanical CONTROL BOARD electronic Water fill level PRESSURE SWITCH CONTROL electromechanical PRESSURE SWITCH SOFTWARE CONTROL electronic Water heating HEATING ELEMENT IN PROTECTIVE TUBE Temperature control gt THERMOSTATS electromechanical NTC TEMPERATURE SENSOR electronic Drying system NORMAL DRY electromechanical gt ACTIVE DRY electronic gt TURBO DRY electronic Safety systems HYDRAULIC ELECTRICAL SYSTEMS electromechanical TOTAL PROTECTION HYDRAULIC ELECTRICAL SOFTWARE electronic Alarms SOFTWARE SYSTEM WITH VISUAL DISPLAY electronic 1 5 ELECTRONIC MODULE Power board gt MAIN OPERATIONAL CONTROL built in microprocessor Comandi Visualizzazione gt USER MACHINE INTERFACE SOI TD PR 6 32 599 38 72 30 1 6 DEFINITION OF STYLINGS AND FUNCTIONS Control panel DIVA ELM electromechanical 1 6 1 7 gt Option key gt Salt level indicator gt Programme selector knob On Off key DEFINITION OF FUNCTIONS Structure Function Type of control Programmes Free On Off key Standing Electromechanical 1 gt 3 keys 3 gt 6 progr knob Built in 1 6 2 Control panel DIVA EDWS500 DEFINITION OF FUNCTIONS Structure Type of control Programmes 1 2 keys put EDW 500 knob also as 3 gt 5 progr ON OFF 1 6 3 Control panel DIV
20. at the dimensions of the compartment are as shown in the figure strutt acc jpg strutt_acc jpg INTERNAL CHARACTERISTICS Upper basket guide Water softening level selector if featured Salt container cap if featured Detergent rinse aid dispenser Control panel Serial number plate Central filter drain Main filter washing Lower spray arm Upper spray arm Upper basket 12 Work top free standing versions only SOI TD PR 11 32 Version BUILT IN This type of dishwasher is designed for installation beneath a sink or a pre existing work top in marble or wood on condition that the dimensions of the compartment are as shown in the figure The feet can be adjusted to a maximum of 80 mm The rear foot is adjusted from the front of the appliance 818 mm min 878 mm max 818 mm min 898 mm max strutt inc jpg B 8mm mir mim 818 mm min 4 898 mm max strutt_int tif 599 38 72 30 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 work top free standing versions only secured to the structure by two screws at the rear 2 1 BASE The specially shaped base is moulde
21. ble to perform the sodium exchange because they are saturated with calcium and magnesium In this case it is necessary to regenerate the resins by introducing sodium chloride salt REGENERATION PROCESS In order to regenerate the resins and restore their efficacy it is necessary to use a salt sodium chloride solution which should be allowed to pass slowly through the resins or preferably left to soak the resins for a period In this case too the ion exchange takes place The sodium contained in the salt solution eliminates the calcium and magnesium salts that have been deposited on the resins which thus regain their softening power The regeneration phase is performed at a pre determined point in the washing cycle by energizing the regeneration solenoid valve for a given time The quantities of water and salt used are optimized according to the level of regeneration selected by the user which in turn depends on the hardness of the water coming from the mains 6 5 2 1 REGENERATION CIRCUIT The volume of water utilized for the regeneration process depends on the degree of inclination of the separation baffle A The water is ducted through the separation baffle via an internal channel which is open at one extremity The inclination of the separation baffle determines the quantity of water used as the baffle moves towards the horizontal position more water is used since only the water above the overflow level is i
22. cuneos 30 LA SNORMAL S DRY DRYING oirra 30 T ING TINE 31 79 TURBO DRY DRYING SYSIE u uu u ull cM unto dis opm cto xo munit 32 SOI TD PR 3 32 599 38 72 30 1 INTRODUCTION 1 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 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 More detailed information regarding individual models may be found in the specific information documents for each specific functionality This information covers Technical characteristics Circuit diagrams Exploded diagrams and Lists of spare parts may be found in the Service Notes and Service Manuals issued separately for each specific model SOI TD PR 4 32 599 38 72 30 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
23. d in sound absorbing plastic material The base which supports the body of the appliance is fixed structurally to the tub The following components are located in the base The fill valve The integrated terminal block power cable and anti interference capacitor The washing pump capacitor The anti flooding device if featured The support system rubber support blocks for the washing pump The counterweight free standing versions only if featured 2 2 DOOR The door consists of the following sub assemblies 2 2 1 CONTROL PANEL The control panel is in moulded plastic and is secured to the inner door by six self tapping screws The control panel may be customized for the various stylings with different colours and silk screened markings or by the application of a transparent or stainless steel panel mask The following components are screwed or pressure fitted to the inside of the control panel The timer or electronic board The door aperture handle The pushbutton array The pilot lamp diffusers 2 2 2 INNER DOOR The inner door is in and is secured by two lateral hinges using four screws which are secured to the two front uprights of the tub The following components are fitted to the interior of the inner door The door latch with a built in door aperture microswitch The integrated dispenser detergent and rinse aid n the lower section a seal with the bottom of the tub 2 2 3 DOOR
24. eakage safety system using an anti flooding device Protection against overheating using a safety thermostat software for electronic models Electrical door aperture safety system Functional protection with constant monitoring with software control for electronic models SOUND PROOFING Improved silence thanks to the use of new materials and new construction technologies SERVICE Easier access to components thanks to careful positioning from the two removable side panels and from the frontal plinth Electronic models Facilitation of repairs using diagnostics tests and trouble shooting procedures The washing parameters can be modified to improve washing performance SOI TD PR 5 32 599 38 72 30 1 8 GENERAL CHARACTERISTICS Power supply 230 V 50 Hz limits 187 254 V Total power absorption gt 2300 W with 2100 W heating element Water supply gt Min Max Pressures 5 80 N cm Load capacity gt 9 place settings for 45cm and 12 place settings for 60cm Noise level db 50 56 A sound pressure electromechanical gt db 46 50 A sound pressure electronic Class gt AAA AAB electronic models Declared consumption BIO AAB programmes Water Energy Duration of cycle gt 1411 1 10 KWh 150 Min Example of programme declared to the various consumer institutes electronic models 1 4 FIELD OF APPLICATION Washing system CONTINUOUS electromechanical CONTINUOUS IMPULSE OPE
25. ins water supply is very soft this function optimizes the hardness of the washing water in order to prevent the possibility of corrosion of glass recipients The quantity of unsoftened water that is introduced into the appliance is expressed as a percentage of the total quantity of water utilized SELECTOR ON TANK p BLENDING FUNCTION Position of Water selector blending 6 6 2 SELECTING THE LEVEL OF REGENERATION Electromechanical versions s E On electromechanical dishwashers regeneration is performed during every washing cycle The level of regeneration is selected using the selector located inside the tub on the left hand side near the steam venting ring The quantity of water utilized depends on the position of the selector The knob can be set to one of ten different settings as shown in the table below f the selector is set to L1 or L2 the Blending function is performed automatically thus blending softened water with unsoftened water To select a different level of regeneration according to the hardness of the mains water supply open the door and adjust the position of the selector from inside the appliance as follows Turn the selector until the correct level 1 10 is aligned with the marker the water is hard turn the selector clockwise if it is soft turn the selector counter clockwise Selection of the appropriate level of regeneration will ensure efficient washing TABLE
26. ion This forms a closed condensation circuit which does not expel steam to the exterior from which the circuit is isolated The drying time is variable and pre defined for each washing cycle SOI TD PR 31 32 599 38 72 30 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 This drying system is based on the forced circulation of the hot air produced during the hot rinse where the steam hot humid air is drawn in by the fan located inside the upper duct and then ducted towards the condenser in the fill tank from where it returns to the tub via the steam venting ring The condenser is a condensation chamber filled with water cold wall against which the hot air is ducted This contact between the hot air and the cold wall generates the process of condensation This forms a closed condensation circuit which does not expel steam to the exterior from which the circuit is isolated The fan is not switched on continuously but pauses at intervals The drying time is variable and pre defined for each washing cycle SOI TD PR 32 32 599 38 72 30
27. ly 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 In the water level circuit the air pressure is proportional to the quantity of water present in the sump When this pressure exceeds the pre determined threshold the pressure switch which acts as a pressure sensor switches the electrical contact to full In order to maintain this condition the stability of the water level is ensured during operation washing which maintains the pressure switch closed on full It is therefore possible to ascertain with certainty that the status of the pressure switch i e its position of empty or full ensures that the cycle is performed correctly 6 4 ANTI OVERFLOW SAFETY LEVEL In all dishwashers electromechanical and electronic the anti overflow safety system is constantly monitored by the safety pressure switch which acts as a pressure sensor in order to prevent water from overflowing due to an excessively high level The safety pressure switch is connected pneumatically via a small tube to the sump which contains a second pressure chamber air trap located adjacent to that of the level pressure switch In the safety circuit too the air pressure is proportional to the quantity of water
28. ntroduced When the regeneration solenoid 4 is energized the volume of water contained in the regeneration chamber 7 280 cc max descends by gravity into the salt reservoir at this point the internal valve opens allowing the corresponding quantity of salty water to pass into the resin reservoir 9 After draining the internal valve which is no longer pressurized closes the circuit When the solenoid is de energized the salt solution remains in the resin reservoir until the subsequent resin washing procedure is performed SOI TD PR 27 32 599 38 72 30 6 5 3 WASHING THE RESINS 6 5 3 1 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 In this case too the fill solenoid and the drain pump switch on simultaneously at a certain point in the cycle and for a pre determined period to circulate a quantity of water about 2 litres which flushes the softening circuit RESIN WASHING CIRCUIT During this phase the two functions fill and drain are performed simultaneously Fill solenoid 2 3 When the solenoid is energized
29. o that the air is expelled This enables the pump to fill with water and prevents cavitation Sump bottom valve Located internally near the sump bottom During the water fill phase the valve closes to separate the drain section from the washing section During the drain phase the valve opens thus connecting the drain and washing sections The following connections are located externally Hydraulic connection to the softener via a rubber hose Hydraulic connection to the drain pump via a rubber coupling Hydraulic connection to the washing pump via a rubber coupling Housing for the thermostat or temperature turbidity sensor To the level and safety pressure switches two small tubes of different colours DRYING DUCT The drying duct is a moulded plastic container consisting of two sections which are pressure fitted together The drying duct is used in Active and Turbo drying During the drying phase the function of the duct is to transfer the steam from inside the tub into the fill tank condenser where itis condensed The drying duct is positioned externally above the tub and fixed from the inside by a snap ring DRYING DUCT FAN Turbo drying is obtained by means of a fan located inside the drying duct The fan consists of a small synchronous electric motor and an elastic drive belt which actions the suction fan blade When the fan is in operation it creates a forced air movement I TD PR 18
30. outlet in the lower rear section of the base to the water fill tank Rated delivery 4 litres min approx 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 Built in safety devices 1 auto reset bi metal thermostat calibrated to 98 and connected in series to one branch of the heating element 1 manual reset fuse calibrated to 206 C and connected in series to the second branch of the heating element If this fuse intervenes the heating element is disconnected definitively 4 10 TEMPERATURE THERMOSTAT Used in versions with electromechanical control systems timers to control the temperature of the washing water Positioned externally on the sump in direct contact with the water Available in two versions with one temperature or two temperatures 1T gt for appliances with fixed temperature washing 65 C 2 T gt for appliances with variable temperature washing 50 65 C 4 11 TEMPERATURE SENSOR Used in versions with electronic control systems to control the temperatures of the washing water Positioned externally on the sump in direct contact with the
31. phase is performed at the normal temperature 65 If the drain cycle is not performed the wash phase is performed at 50 C 2nd reading during the 1st rinse Determines whether the 2nd rinse is performed SOI TD PR 21 32 599 38 72 30 4 13 INTEGRATED DISPENSER The integrated dispenser consists of a plastic container comprising two separate sections which contain Detergent A and Rinse aid B 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 The dispenser is controled by the timer or PCB at pre determined steps during the cycle to ensure correct dosing A window to the side of the rinse aid sector indicates the level of detergent when the window is clear the detergent requires topping up 4 14 LEVEL amp ANTI OVERFLOW PRESSURE SWITCH These are two traditional pressure switches pneumatic diaphragm type connected to a special support which is in turn secured to the right hand upright by two screws 4 14 1 LEVEL PRESSURE SWITCH Determines the level of water introduced into the appliance Operating range Intervention Reset 65 45mm Operating characteristics Empty Full Contacts 1 2 1 3 4 14 2ANTI OVERFLOW PRESSURE SWITCH Ensu
32. r to the exterior of the appliance This is the classic traditional drying system based in the natural circulation of hot air The steam hot humid air produced during the hot rinse enters from the lower section through the steam venting ring and circulates slowly inside the chamber of the fill tank Here it is condensed and expelled from the upper section towards the exterior SOI TD PR 30 32 599 38 72 30 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 This drying system is based on the natural circulation of the hot air produced during the hot rinse where the steam hot humid air circulates inside the condenser of the fill tank through two connector ducts thus generating the process of condensation Part of the steam enters from the lower section through the steam venting ring and circulates slowly inside the chamber of the condenser The remaining part of the steam circulates in the same way entering from the upper section of the tub through the external upper duct which communicates with the chamber of the condenser The condenser is a condensation chamber filled with water cold wall against which the hot air is ducted This contact between the hot air and the cold wall generates the process of condensat
33. re used as a seat for the perimetral door seal The tub is soundproofed by applying tar coated panels which are hot glued on the external sides all or some of the sides These panels are of different thicknesses according to the level of noise generated by the appliance The structure of the tub is completed by the installation of a number of additional components Lateral uprights A which support the tub on all four sides Three of these the two rear uprights and the RH lateral upright are inserted into the base Two rear uprights produced automatically using the clinching system cold deformation welding Two front uprights secured manually using three screws Rear cross member B in plastic secured to the lateral uprights by two screws The rear cross member is a structural support for the side panels and work top and also supports the various hoses Front cross member C in enamelled sheet metal pressure fitted to the two lateral uprights and secured using two screws The front cross member is a structural support for the side panels and work top and also for the door closure mechanism COMPONENTS BUILT INTO THE TUB The tub is then fitted with a number of functional components Externally On either side the four supports for the upper basket guides RH side the vertical manifold which ducts water to the upper spray arm Onthe LH side the water fill tank
34. res that the level of water in the appliance does not exceed the safety threshold overflow from the door Operating range Intervention Reset 129 105mm Operating contacts Empty Full Contacts 1 2 1 3 Connected electrically in series via contacts 1 3 to the drain pump the switch intervenes on Full 1 3 the drain pump switches on until the switch returns to Empty 1 2 4 15 ANTI FLOODING DEVICE This mechanical electrical safety device is activated if water is detected in the bottom of the appliance if featured The device consists of a plastic container which contains a sensor floating type and a microswitch It is fitted into a special housing inside the base of the appliance Sensor Extra light polystyrene sensor whose position at rest or raised determines the mechanical action of the microswitch Microswitch B This switch is connected in series to the fill solenoid and opens or closes the contacts in order to connect or disconnect the solenoid valve electrically When at rest solenoid valve energized the electrical contacts are closed Fitted into a housing in the container SOI TD PR 22 32 599 38 72 30 5 1 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
35. ronous motor via a series of levers and gears which in turn advance the timer from one step to the next One complete rotation of the timer is subdivided into 58 steps each with a specific duration step time variable between 5 sec and 24 sec LATCH ASSEMBLY Closure of the door is performed by a mechanical locking release system which also connects and disconnects the electrical components in the appliance The latch is positioned inside the inner door in the upper section and is secured from the exterior by two screws The assembly consists of the latch which also features a built in microswitch Latch The latch is in plastic material in which a system of levers provides the mechanical action Microswitch The microswitch is connected electrically in series to the ON OFF switch and opens or closes the contacts in order to connect or disconnect the machine from the power supply The microswitch is pressure fitted into a housing in the latch SOI TD PR 19 32 599 38 72 30 4 5 4 5 1 4 6 4 7 4 8 4 8 1 AQUACONTROL FILL SOLENOID VALVE SOI TD PR 20 32 599 38 72 30 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 suppo
36. rts in vibration damping rubber Connected to the sump by rubber couplings WASHING PUMP versions with Electronic control Same functional characteristics but with one exception The pump is fitted with a tachymetric sensor G housed externally to the motor The sensor is connected to the electronic 1170 control system in order to provide variable speeds of rotation CAPACITOR Capacitance 3uF operating voltage 450 V The capacitor is permanently connected to the windings of the washing pump and is used to start up and maintain rotation in all operating conditions DRAIN PUMP Single phase two pole synchronous centrifugal motor Rotation in both directions Integrated hydraulic group pump body and impeller Secured to the sump by snap on connectors and connected hydraulically via a rubber coupling A diaphragm type non return valve A positioned on the outlet coupling reduces the quantity of water remaining in the sump at the end of the drain cycle and prevents water from entering the appliance from the drain system in the sink FILL SOLENOID VALVE Traditional single coil solenoid valve with one inlet and one outlet Positioned in the lower rear section of the base The outlet is connected via a tube to the water fill tank Rated delivery 4 litres min approx Integrated single coil solenoid valve fitted upstream of the fill hose The fill hose is coupled from the
37. rture and closure of the door slides vertically along the surface of the hinge Some hinges are fitted with a double clutch system two sliding elements in order to provide a greater braking effect so that doors of greater weight are balanced in the same way SOI TD PR 13 32 599 38 72 30 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 Other differences concern the type of soundproofing which depends on the number and thickness of the tar coated panels 2 3 1 STRUCTURAL CHARACTERISTICS 2 3 2 STRUCTURAL SUB ASSEMBLIES 2 3 2 1 The tub is produced by press forming using steel Side and rear panels produced in a single production cycle pressing drilling forming Tub ceiling pressing drilling Tub bottom pressing drilling The side and rear panels are then crimped to the ceiling and the bottom of the tub A silicone based adhesive is inserted between the parts to provide a seal Two ducts in stainless steel in the shape of an inverted L welded around the internal perimeter of the front section of the tub to the ceiling and the two sides a
38. set to ON Versions with electronic control Important If at the end of the cycle the door is opened or the appliance is switched off the drain pump will be disactivated To ensure that the anti overflow device remains in operation the appliance must remain connected to the power supply with the ON OFF switch in the ON position and the door closed N B For further details refer to the Service Notes describing the functions of each specific model SOI TD PR 26 32 599 38 72 30 6 5 6 5 1 WATER SOFTENING SYSTEM 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 The exchange process takes place during every fill phase each time water is introduced into the circuit by energizing the solenoid valve 6 5 1 1 SOFTENING CIRCUIT 6 5 2 The fill water from the solenoid valve 2 3 after filling the regeneration chamber 7 continues its path until it reaches the resin reservoir 9 The water then slowly passes upwards through the resin bed where it is softened from here the water continues its route towards the sump Obviously after a certain period the resins lose their softening power i e are no longer a
39. 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 DEFINITION OF THE WASHING CYCLE The various washing cycles are known by commercial descriptions such as Vigorous Normal Short etc At design level the cycles are based on a series of washing phases comprising Pre wash Wash Rinses and Drying Each of these phases includes a number of phase cycles which determine the execution of the washing cycle in a logical sequence Each phase in the operation of the appliance has a pre determined duration and temperature though these can be modified using the supplementary keys to create different cycles In other words the functions performed during the washing cycle are variable according to the cycles defined For further details regarding the definition of the washing cycles refer to the specific Service Notes for each model Basic progressive composition of the phases of the washing cycle WASHING Complementary Variable Fill Drain Resin washing Fill PRE WASH Washing Heating 09 gt 50 C Drain Fill Washing Detergent Heating Wait for temperature 50 gt 65 C Drain Fill Wait for pressure switch skip phase Drain mms Wait for pressure switch Fill Wash Heating Wait for temperature Rinse aid 50 gt 65 C Drain Regeneration DRYING if featured
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