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599 70 39-88

5.3 Diagnostics

phases

Irrespective of the type of PCB and the configuration of the programme selector it is possible, after entering diagnostics mode,
to perform diagnostics on the operation of the various components and to read the alarms by turning the programme selector

clockwise

. All the alarms are enabled during the diagnostics cycle

.

Selector position

Components actioned

Operating conditions

Function

checked

LCD

1

- All the LEDs and symbols light
in sequence.

-

When a button is pressed, the

corresponding LED or symbol
light.

Always activated

Operation of the

user interface

2

-

Door interlock

- Wash solenoid

Door locked
Water level below anti-
flooding level
Maximum time 5 minutes

Water ducted

through washing

compartment

Displays the water

level in tub

3

-

Door interlock

-

Pre-wash solenoid

Door locked
Water level below anti-
flooding level
Maximum time 5 minutes

Water ducted

through pre-wash

compartment

(bleach)

Displays the water

level in tub

4

-

Door interlock

-

Pre-wash and wash solenoids

Door locked
Water level below anti-
flooding level
Maximum time 5 minutes

Water ducted

through conditioner

compartment

Displays the water

level in tub

5

-

Door interlock

-

Bleach/stains solenoids

Door locked
Water level below anti-
flooding level
Maximum time 5 minutes

Water ducted

through

conditioner/stains

compartments

Displays the water

level in tub

6

-

Door interlock

- Wash solenoid if the level of

water in the tub does not cover
the heater

-

Heating element

-

Recirculation pump

Door locked
Water level above the
heater
Maximum time 10 minutes
or up to 90°C (*)

Heating

Recirculation

Wash water

temperature

7

-

Door interlock

-

Wash solenoid if the level of

water in the tub does not cover
the heater

-

Motor (55 rpm clockwise, 55

rpm counter-clockwise, 250
rpm impulse)

Door locked
Water level above the
heater

Check for leaks

from the tub

Displays the drum

speed (the real

value divided by

ten)

8

-

Door interlock

-

Drain pump

-

Motor up to 650 rpm then at

maximum spin speed

Door locked
Water level lower than
anti-boiling level for
spinning

Drain and spin;

control of

congruence in

closure of level

pressure switches

Displays the drum

speed (the real

value divided by

ten)

9

-

Door interlock

-

Drain pump

-

Motor fan

-

Condensation solenoid valve

-

Drying heater

Door locked
Water level lower than
anti-boiling level

Drying

Displays the air
temperature

«
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24
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27
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Summary of Contents for EWM21xx

Page 1: ...erations Italy Corso Lino Zanussi 30 Publication no I 33080 PORCIA PN 599 70 39 88 Fax 39 0434 394096 Edition 2007 08 11 EN Washing machines Washer dryers with electronic control system EWM21xx EWM25xx Technical and functional characteristics ENV06 AEG Styling SERIES 6 7 ...

Page 2: ...SOI DT 2007 11 dmm 2 69 599 70 39 88 ...

Page 3: ...ing the alarm 28 6 2 2 Examples of alarm display 28 6 2 3 Operation of alarms during diagnostics 28 6 3 Rapid reading of alarm codes 29 6 4 Cancelling the last alarm 29 7 OPERATING TIME COUNTER 30 7 1 1 Reading of operating time 30 7 1 2 Display of total operating time with LEDs 30 8 WASHING PROGRAMMES AND OPTIONS WM 31 8 1 Options for appliances EWM 21xx with universal motor 31 8 2 Options for ap...

Page 4: ...DRYING CIRCUIT 51 11 1 Temperature control 52 Calculating the drying time 52 11 2 Table of alarm codes 53 11 3 Diagram WM with UNIVERSAL MOTOR EWM 21xx 57 11 4 Diagram WM with THREE PHASE ASYNCHRONOUS MOTOR EWM 25xx 59 11 5 Diagram WD with UNIVERSAL MOTOR EWM 21xx 61 11 6 Diagram WD with THREE PHASE ASYNCHRONOUS MOTOR EWM 25xx 63 12 ACCESSIBILITY TO THE ELECTRONIC CONTROL SYSTEM 65 12 1 WM Version...

Page 5: ...ashing programmes technical and functional characteristics access to the electronic control system For detailed information concerning hydraulic circuit structural characteristics of the appliances and accessibility please refer to Service Manual Publication no 599 37 67 82 washing machines with HEC ARCHED cabinet Identification table between styling SERIES 6 7 and functionality EWM 21xx 25xx Styl...

Page 6: ...200 baud Power supply 220 240V 50 60 Hz configurable Type of washing Traditional with eco ball sphere Jet system Rinsing system Traditional with eco ball sphere Jet system Motor Collector with tachometric generator Two pole asynchronous with three phase tachometric generator with Inverter Spin speed 1000 1600 rpm Anti unbalancing system FUCS Water fill 1 solenoid valve with 1 inlet 2 3 outlets Det...

Page 7: ... generator Two pole asynchronous with three phase tachometric generator with Inverter Spin speed 1000 1600 rpm Anti unbalancing system FUCS Water fill 1 solenoid valve with 1 inlet 2 3 outlets Detergent drawer 3 compartments prewash stains wash conditioners Control of water level in the tub Electronic analogue pressure switch Door safety device Traditional with PTC Instantaneous Power of heating e...

Page 8: ...for WM and LEDs 16 for WD LCD Version WM SERIES 6 Special SERIES 6 The two versions differ for the background colour of the LCD one black the other white Version WD SERIES 6 Special SERIES 6 The two versions differ for the background colour of the LCD one black the other white Dispositions of LEDs and buttons VERSION WM VERSION WD ...

Page 9: ...e In the first position the appliance is switched off and the current programme is cancelled For each programme the compatible options and other parameters are defined 3 2 4 Programme configuration The table below lists the parameters that can be used to define the washing programmes Types of fabric Cotton linen Synthetic fabrics Delicates Wool Hand wash Shoes Jeans Duvet Silk Special programmes S...

Page 10: ...e in WD versions is related to LEDs L6 L8 L10 Button no 3 this button is configurable and is related to LED L11 Button no 4 this button is configurable and is related to LED L14 Button no 5 this button is configurable and is related to LED L15 Button no 6 this button is configurable and has the function of START PAUSE and is related to LEDs 20 21 Two LEDs one yellow that flashes in case of alarm a...

Page 11: ...been memorized if included in the cycle Rinse hold Lights if the programme includes the rinse hold option and at the end of the cycle when the appliance stops with water in the tub Current cycle Lights during selection mode Lights during execution of the cycle and switches off during the drain phase if selected End of cycle Lights when the programme has been completed Door locked Lights when the d...

Page 12: ...a function not compatible with the chosen programme is selected The wrong selection is also signalled by an acoustic alarm if activated ª An alarm code indicates an error of the appliance operation Simultaneously to the displaying of the code in the display the yellow LED above the START PAUSE button flashes Buzzer configurable A beep when the programmes are selected an option when the START PAUSE...

Page 13: ...ol up to 115 200 baud Power supply 220 240V 50 60 Hz configurable Type of washing Traditional with eco ball sphere Jet system Rinsing system Traditional with eco ball sphere Jet system Motor Collector with tachometric generator Two pole asynchronous with three phase tachometric generator with Inverter Spin speed 1200 1600 g Anti unbalancing system FUCS Water fill 1 solenoid valve with 1 inlet 2 3 ...

Page 14: ...onous with three phase tachometric generator with Inverter Spin speed 1200 1600 rpm Anti unbalancing system FUCS Water fill 1 solenoid valve with 1 inlet 2 3 outlets Detergent drawer 3 4 compartments prewash wash conditioners bleach Control of water level in the tub Electronic analogue pressure switch Door safety device Traditional with PTC Instantaneous Power of heating element washing 1950W with...

Page 15: ... display Version WM SERIES 7 Special SERIES 7 The two versions differ for the size of the LCD in the Low version the displaying of the choice of the options is performed through the lighting of the LEDs Version WD SERIES 7 Disposition of the LEDs and of the buttons in the display board Version Series 7 Special WM Version Series 7 WM WD ...

Page 16: ... position the appliance is switched off and the current programme is cancelled For each programme the compatible options and other parameters are defined Programme configuration The table below lists the parameters that can be used to define the washing programmes Types of fabric Cotton linen Synthetic fabrics Delicates Wool Hand wash Shoes Jeans Duvet Silk Special programmes Soak Miniprogramme Ea...

Page 17: ...related to LED L10 Button no 3 this button is configurable and is related to LED L11 Button no 4 this button is configurable and is related to LE L14 Button no 5 this button is configurable and is related to LE L15 Button no 6 this button is configurable and has the function of START PAUSE and is related to LEDs 20 21 Two LEDs one yellow that flashes in case of alarm and one red that flashes when ...

Page 18: ...e corresponds to that necessary for the maximum wash load for each programme type After starting the programme the time decreases and updates minute by minute ª Washing phases Pre wash Washing Drain Spin ª The end of the programme is indicated by one zero flashing ª The stop of the appliance with water in tub after the programmes with RINSE HOLD option is displayed by one zero flashing The key ind...

Page 19: ...hen a function not compatible with the chosen programme is selected The wrong selection is also signalled by an acoustic alarm if activated ª An alarm code indicates an error of the appliance operation Simultaneously to the displaying of the code the START PAUSE flashes Buzzer See page12 ...

Page 20: ...ed and by the 4 digits When the NIGHT CYCLE or RINSE HOLD is selected the relative symbols light up no value relative to the bars or the digits appears At the end of the cycle the RINSE HOLD button flashes Button no 3 OPTIONS Configurable button the available options for this button are Pre wash it can be configured also as programme Stains Sensitive Extra rinse Button no 4 OK Configurable button ...

Page 21: ...ese phases during and after the execution of the phase The bar under the symbol flashes when the relative phase is being executed The symbols of the phases to execute remain off Pre wash lights up when it is configured as an option and selected with the relative button ª Door closure Lights up when the door is locked Switches off when the door is not locked Flashes when the door is being unlocked ...

Page 22: ...g this button the time drying is selected and simultaneously the writing AUTO appears For 3 the symbol and the duration of the drying time right bottom are displayed and then the whole time of the washing programme The time is displayed in hours and minutes and is updated every minute The max duration is 130 minutes Button no 4 OPTIONS Configurable button the available options are Pre wash Stains ...

Page 23: ... execution of the phase The bar under the symbol flashes when the relative phase is being executed The symbols of the phases to execute remain off Pre wash lights up when it is configured as an option and selected with the relative button ª Programme duration After selecting the programme the time is displayed in hours and minutes The duration is calculated on the basis of the maximum load of the ...

Page 24: ...STEM 5 1 Access to diagnostics mode SERIES 6 WM WD SERIES 7 Special WM SERIES 7 WM WD 1 Switch off the appliance 2 Press and hold down START PAUSE button and the nearest option button as represented in figure 3 Holding down both buttons switch the appliance on by turning the programme selector by one position clockwise 4 Continue to hold down the buttons till the LEDs and the symbols begin to flas...

Page 25: ...evel Maximum time 5 minutes Water ducted through conditioner compartment Displays the water level in tub 5 Door interlock Bleach stains solenoids Door locked Water level below anti flooding level Maximum time 5 minutes Water ducted through conditioner stains compartments Displays the water level in tub 6 Door interlock Wash solenoid if the level of water in the tub does not cover the heater Heatin...

Page 26: ...n be increased by repeating the phase without draining the water pass for a moment to a different phase of the diagnostics cycle and then back to the heating control phase if the temperature is higher than 80 C heating does not take place The check at the maximum speed occurs without control of the FUCS and no clothes have to be inserted inside the appliance ...

Page 27: ...e frequency which are also displayed during the programme selection phase The door can normally be opened except where specified when an alarm condition has occurred on condition that The level of the water in the tub is below a certain level Water temperature lower than 55 C Motor stopped Certain alarm conditions require that a drain phase be performed before the door can be opened for safety rea...

Page 28: ...ll alarm codes The alarm code families are shown in hexadecimal in other words A is represented by 10 flashes B is represented by 11 flashes F is represented by 15 flashes 6 2 2 Examples of alarm display Example Alarm E43 problems with the door interlock Triac will display the following the sequence of four flashes of the START PAUSE button with yellow light indicates the first number E43 the sequ...

Page 29: ... the two buttons are held down The alarm reading system is as described in paragraph 7 2 While the alarms are displayed the appliance continues to perform the cycle or if in the programme selection phase maintains the previously selected options in memory 6 4 Cancelling the last alarm It is good practice to cancel the last alarm after reading the alarm code to check whether the alarm re occurs dur...

Page 30: ...ess the START PAUSE button and the nearest option button see figure simultaneously 3 Holding the buttons down switch on the appliance turning the programme selector of five positions clockwise 4 Hold the buttons down till the LCD or the display show the working hours at least 5 seconds 7 1 2 Display of total operating time with LEDs This time is displayed two digits at a time The first two digits ...

Page 31: ... X X X X X X X X X X 30 C X X X X X X X X X X X X Cotton with prewash 1800 0 cold X X X X X X X X X X X X X X X X X 90 C X X X X X X X X X X 60 C X X X X X X X X X X 50 C X X X X X X X X X X Cotton Economy 1800 0 40 C X X X X X X X X X X X X X X 60 C X X X X X X X X X X X X X 50 C X X X X X X X X X X X X X 40 C X X X X X X X X X X X X X 30 C X X X X X X X X X X X Synthetic fabrics 1200 0 cold X X ...

Page 32: ...X X X X X X X X X X X X X 50 C X X X X X X X X X X X X X 40 C X X X X X X X X X X X X X 30 C X X X X X X X X X X X X Cotton with prewash 1800 0 cold X X X X X X X X X X X X X X X X X 90 C X X X X X X X X X X 60 C X X X X X X X X X X 50 C X X X X X X X X X X Cotton Economy 1800 0 40 C X X X X X X X X X X X X X X 60 C X X X X X X X X X X X X X 50 C X X X X X X X X X X X X X 40 C X X X X X X X X X X ...

Page 33: ... X X X X X X X 40 C X X X X X X X X X 30 C X X X X X X X X Viscose 1200 0 cold X X X X X X X X X X X X X 40 C X X X X X X 30 C X X X X X X Sport 800 0 cold X X X X X X X X X X 60 C X X X X X X Short Intensive for JET 1200 0 40 C X X X X X X X X X X 60 C X X X X X X Short Intensive for ECO 1200 0 40 C X X X X X X X X X X Sanitise 60 1800 0 60 C X X X X X X X X X X X X Rinses 1800 0 X X X X X X X X ...

Page 34: ...WM21xx 25xx OPTIONS PROGRAMMES Spin speed Max Min Temp Extra Dry Cuppboard Dry Iron Dry Max time minutes 90 C X X X 130 60 C X X X 130 50 C X X X 130 40 C X X X 130 30 C X X X 130 Cotton 1600 0 cold X X X 130 60 C X 130 50 C X 130 40 C X 130 30 C X 130 Synthetics 900 0 cold X 130 ...

Page 35: ...X X X X X X X X X Pre wash X X X X X X X X X X X X X X X Stains X X X X X X X X X X X X X X X Bleach X X X X X X X X X X X X X X Extra rinse X X X X X X X X X X X X X X X X Easy iron X X X X X X X X X X X X X X X Economy X X X X X X X X X X X Intensive X X X X X X X X X X X X Normal X X X X X X X X X X X X Daily X X X X X X X X X X X X Light X X X X X X X X X X Quick X X X X X X X X X X Super Quic...

Page 36: ...er through the bleach compartment at the beginning of the first rinse in COTTON cycles Economy Energy label Modifies the structure of the COTTON 40 60 and SYNTHETICS 50 60 programmes in order to reduce energy consumption Reduces the washing temperature Increases the duration of the wash phase Super rinse Adds two rinses in the COTTON SYNTHETICS and DELICATES cycles Eliminates the intermediate spin...

Page 37: ... immediately after selecting a delayed start press START PAUSE cancel the delay time by pressing the appropriate button then press START PAUSE again Electronic drying WASHER DRYERS certain models only Three different degrees of drying can be selected for COTTON and one for SYNTHETIC fabrics ª Extra dry cotton only ª Cupboard dry cotton and synthetics ª Iron dry cotton only The appliance automatica...

Page 38: ...ions Current phase and sub phase Ö Machine status used to perform special cycles such as Electrical test used in the assembly line Continuous cycles used in the factory workshop Ö Machine configuration the data contained in the EEPROM define the characteristics of the model and are interpreted by the function software The variables are as follows Type of appliance front loader top loader compact T...

Page 39: ...or half range operation of the motor Structure of the washing group Control parameters for the FUCS anti unbalancing system Water fill control algorithm Alarm control system Sensor parameters flowmeter etc 10 1 3 RAM The RAM Random Access Memory contains the variables i e all the dynamic information used during execution of the programme Ö Motor speed Ö Water temperature Ö Alarms Ö Cycle selected ...

Page 40: ...programme is started by pressing the START PAUSE button the bi metal PTC contacts 3 5 is powered by the triac on the PCB after 2 4 seconds this closes the switch 5 4 which powers the electrical components of the appliance only if the door is closed ª The door interlock prevents aperture of the door while the appliance is in operation ª At the end of the washing programme the PCB disconnects the in...

Page 41: ...witch contacts 4 5 thus applying power to all components on the appliance ª When the programme ends the main board sends two additional 20 msec pulses 200 msec apart the first pulse does not unlock the door the second pulse which is sent only if the appliance is operating properly unlocks the door lock device and simultaneously opens the contacts on the main switch 10 2 2 2 Conditions required for...

Page 42: ...ash electric valve 6 Wash electric valve 7 Bleach electric valve 20 PCB 10 3 1 Flow meter Some models of solenoid valves have a built in flow sensor which measures the quantity of water in litres that is loaded into the appliance If the sensor malfunctions the water level is controlled by the analogue pressure switch Solenoid valve exploded view Main board Turbine 1 Circuit board 4 Diffuser 2 Turb...

Page 43: ...olenoid valve The solenoid valve may jam open without being actuated which will cause flooding if the pressure switch controlling the water level does not trip If this occurs the electronic control system which continuously monitors the flow sensor will lock the door start the drain pump and display an alarm Low water pressure If the flow sensor does not generate a signal during water fill even th...

Page 44: ... Electronic circuit Electric symbol The pressure switch is connected by a hose to the pressure chamber When the tub is filled with water the pressure created inside the hydraulic circuit expands the diaphragm This in turn modifies the position of the core inside the coil thus changing the inductance and the frequency of the oscillating circuit The electronic PCB according to the frequency recogniz...

Page 45: ...il the electronic pressure switch closes on empty after which the pump is actioned for a brief period or passes to the subsequent phase for a pre determined period and eventually an alarm appears 10 6 Recirculation pump if featured On jetsystem models the main board powers the recirculation pump through a triac 17 Drain pump 18 Thermal protector 20 PCB ...

Page 46: ...ure degree exceeds the values by which they are calibrated WARNING In case of replacement of the heater replace it with one with the same characteristics in order not to compromise the safety of the appliance 10 8 Temperature sensor The temperature is controlled by the PCB by means of a NTC temperature sensor incorporated in the heating element 1 NTC resistor 2 Metallic capsule 3 Terminals 4 Plast...

Page 47: ... anti foam and the anti unbalancing control procedure 10 10 Three phase asynchronous motor EWM25xx 11 Tachometric generator 20 PCB 23 Inverter 24 Motor X Y X Motor windings 10 10 1 Power supply to motor Three phase power is fed by the inverter 4 which sends through the connectors 5 6 7 the three phases to connectors 1 2 3 on the motor nodes V W U where the windings Y X Z are connected The phase sh...

Page 48: ...se is interrupted the drain pump continues to operate and when the contact returns to EMPTY the spin phase is resumed Spin with excessive foam in the tub critical situation The control system detects whether the electronic pressure switch commutates 5 times to FULL In this case the spin phase is skipped and a one minute drain cycle is performed with the motor switched off in the case of a washing ...

Page 49: ...re is repeated until the wash load is completely balanced ª Correct balancing of the wash load is achieved at a speed of 115 rpm after which the spin cycle begins The Unbalancing Control function takes place in different phases each phase is characterized by ª an unbalancing index 0 1 2 3 ª an unbalancing threshold value ex 850 350 650 1100rpm ª a time out max time Ending of the FUCS balancing pha...

Page 50: ...0 39 88 Balancing in the available longer interval Phase Unbalancing index Time out sec 1 0 60 2 1 120 3 2 60 4 3 90 5 1 120 6 2 90 7 3 90 Unbalancing after all phases In this case the spin or impulse is not performed 1 2 3 4 5 6 7 ...

Page 51: ...s types of drying can be selected extra dry cupboard dry iron dry Time controlled cycle the drying time is selected by the user maximum 130 minutes for cotton and synthetic fabrics Cooling a cooling cycle is performed at the end of every drying cycle Anti crease after the cooling phase an anti crease phase of a 10 minute duration is performed The drying heaters are powered directly by the main boa...

Page 52: ...umidity control sensor NTC 1 Drying temperature control thermostat NTC 2 Safety thermostat auto reset 3 Manual reset safety thermostat 150 C 4 Drying heater NTC sensor resistance at 25 C 5000Ω Manual reset safety thermostat Normally closed Opens at 150 5 C Auto reset safety thermostat Normally closed Opens at 110 3 C Closes at 94 5 Power 920 920 W Voltage 230V 240V Heater group Resistance 56 5Ω 56...

Page 53: ...e switch faulty Wiring faulty PCB faulty Electrical current leak between heating element and ground Cycle is paused START RESET E23 Drain pump faulty Wiring faulty PCB faulty Safety drain cycle Cycle stops with door unlocked RESET E24 PCB faulty Safety drain cycle Cycle stops with door unlocked RESET E31 Pressure switch Wiring Main PCB Cycle stops with door locked RESET E32 Drain tube kinked clogg...

Page 54: ...pts RESET E5C Inverter board defective the masters voltage is too high measure the masters voltage Cycle stops with door locked after 5 attempts RESET E5d Line interference Wiring defective defective main board or inverter board Cycle stops with door locked after 5 attempts RESET E5E Defective wiring between main board and inverter board Defective inverter board defective main board Cycle stops ON...

Page 55: ...F ON EH3 Power supply problems incorrect disturbance PCB faulty Wait for voltage nominal conditions OFF ON EHE Wiring faulty PCB faulty Safety drain cycle Cycle stopped with door open RESET EHF PCB faulty Safety drain cycle Cycle stopped with door open RESET EC1 Solenoid valve faulty blocked PCB faulty Cycle interrupted with door closed Drain pump functions always 5 min then it stops for 5 min etc...

Page 56: ...SOI DT 2007 11 dmm 56 69 599 70 39 88 Alarm Possible fault Action machine status Reset EF5 Load too unbalanced final spin phases skipped RESET E00 ...

Page 57: ...SOI DT 2007 11 dmm 57 69 599 70 39 88 11 3 Diagram WM with UNIVERSAL MOTOR EWM 21xx ...

Page 58: ...12 Stator motor 13 Thermal cut out motor 14 Rotor motor 15 Drain pump 16 Thermal cut out drain pump 17 Recirculation pump 18 Thermal cut out recirculation pump 19 Door interlock with PTC 20 PCB 21 Motor with half field 22 Motor without field DOOR_TY Door interlock Triac DRAIN_TY Drain pump Triac REC TY Recirculation pump Triac K1 Heating element relay K2 Motor relay clockwise rotation K3 Motor rel...

Page 59: ...SOI DT 2007 11 dmm 59 69 599 70 39 88 11 4 Diagram WM with THREE PHASE ASYNCHRONOUS MOTOR EWM 25xx ...

Page 60: ...oid valve for bleach 8 Heating element with thermofuses 9 Door interlock instantaneous 10 Suppressor 15 Drain pump 16 Thermal cut out drain pump 17 Recirculation pump 18 Thermal cut out recirculation pump 19 Door interlock with PTC 20 PCB 23 Inverter 24 Three phase DOOR_TY Door interlock Triac DRAIN_TY Drain pump Triac REC TY Recirculation pump Triac K1 Heating element relay ON OFF Main switch pro...

Page 61: ...SOI DT 2007 11 dmm 61 69 599 70 39 88 11 5 Diagram WD with UNIVERSAL MOTOR EWM 21xx ...

Page 62: ...achometric generator motor 18 Stator motor 19 Thermal cut out motor 20 Rotor motor 21 Drain pump 22 Thermal cut out drain pump 23 Recirculation pump 24 Thermal cut out recirculation pump 25 Door interlock with PTC 26 Main PCB 27 Motor with half field 28 Motor without field DOOR_TY Door interlock Triac DRAIN_TY Drain pump Triac REC TY Recirculation pump Triac K1 Relay K2 Motor relay clockwise rotat...

Page 63: ...SOI DT 2007 11 dmm 63 69 599 70 39 88 11 6 Diagram WD with THREE PHASE ASYNCHRONOUS MOTOR EWM 25xx ...

Page 64: ...erlock instantaneous 17 Suppressor 18 Tachometric generator motor 22 Drain pump 23 Thermal cut out drain pump 24 Recirculation pump 25 Thermal cut out recirculation pump 26 Door interlock with PTC 27 Main PCB 30 Inverter 31 One phase motor DOOR_TY Door interlock Triac DRAIN_TY Drain pump Triac REC TY Recirculation pump Triac K1 Relay K2 Motor relay clockwise rotation K3 Motor relay anti clockwise ...

Page 65: ...r c Remove the screw which secures the control panel to the dispenser d Release the clamp from the cross member e Cut the clamp which secures the wiring to the board casing while re assembling put a new clamp f Loosen the screws which secure the cross member to the cabinet and that central to the conveyor g Release the hook of the dispenser to the cross member h Loosen the screws and release the h...

Page 66: ... paying attention not to scrape it e Remove the screws and release the hooks which secure the board casing to the control panel f Before mounting the new board extract the knob pressing the hooks indicated by the arrows as represented in figure While re assembling repeat the same operations in reverse order and pay attention to position correctly the knob ...

Page 67: ...he top panel towards the rear and release from the cabinet 12 2 2 Control panel b Extract the drawer c Remove the 2 screws which secure the control panel to the dispenser d Release the wiring clamps from the cross member e Loosen the screws which secure the cross member to the cabinet and to the dispenser ...

Page 68: ... Loosen the screw which fits the WD board to the cross member and extract the board h Loosen the screws and the hook which fit the control panel to the cross member i Detach the connectors represented in figure j Cut the clamp and extract the wiring from the hook which fits it to the board casing ...

Page 69: ...pressure switch l Remove the connectors from the thermostat Loosen the screws and release the hooks which fix the board assembly to the control panel as represented in the WM version While remounting the work top please pay attention not to position it as in fig A but as in fig B A B ...

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