Electrolux EDR1000NEW User manual

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SERVICE MANUAL
DRYERS
ELECTROLUX ZANUSSI S.p.A.
Spares Operations Italy
Corso Lino Zanussi, 30
Publication no.
I -33080 PORCIA /PN (ITALY) 599 3620-08
Fax [phone]
Edition: 2003-12-04
EN
Condenser dryer with
electronic control system
EDR1000NEW
(Nexus4)
Production:
ZP -Porcia (IT)

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TABLE OF CONTENTS
1Purpose of this Manual.....................................................................................................................5
2IMPORTANT...................................................................................................................................5
2.1 Safety........................................................................................................................................5
2.2 Installation..................................................................................................................................5
3GENERAL CHARACTERISTICS ......................................................................................................6
4CONTROL PANEL..........................................................................................................................6
4.1 Four-pushbutton control panel .....................................................................................................7
4.2 Five-pushbutton control panel......................................................................................................7
4.3 Description of pushbuttons and LEDs...........................................................................................8
4.3.1 "NO BUZZER" pushbutton ...................................................................................................8
4.3.2 "QUICK" pushbutton ............................................................................................................8
4.3.3 "DELICATE DRYING" pushbutton (half power)......................................................................8
4.3.4 "DELAYED START" pushbutton ...........................................................................................8
4.3.5 "START/PAUSE" pushbutton ...............................................................................................8
4.3.6 "CYCLE PHASE" LEDs........................................................................................................9
4.3.7 WARNING LEDs .................................................................................................................9
4.4 Programme selector....................................................................................................................9
4.5 Options ....................................................................................................................................10
4.6 Adjusting the level of conductivity ..............................................................................................11
4.6.1 Procedure.........................................................................................................................11
4.7 Description of operation ............................................................................................................12
4.7.1 Selection phase.................................................................................................................12
4.7.2 Cycle operation.................................................................................................................12
4.7.3 Operation in PAUSE mode.................................................................................................12
4.7.4 Operation in DELAYED START mode.................................................................................13
4.7.5 Buzzer..............................................................................................................................13
4.7.6 Power failure.....................................................................................................................13
5DEMO mode .................................................................................................................................14
5.1 Selecting DEMO mode..............................................................................................................14
5.2 Exiting DEMO mode .................................................................................................................14
6STRUCTURAL AND FUNCTIONAL CHARACTERISTICS................................................................15
6.1 Drying circuit ............................................................................................................................15
6.2 Structural characteristics...........................................................................................................16
6.3 Drum .......................................................................................................................................17
6.4 Air seals and drum shaft supports..............................................................................................17
6.4.1 Rear air seal .....................................................................................................................17
6.4.2 Rear drum support.............................................................................................................17
6.4.3 Front drum support and air seal..........................................................................................17
6.4.4 Lower drum support...........................................................................................................17
6.5 Hydraulic circuit (versions with canister in upper section).............................................................18
6.6 Drum rotation ...........................................................................................................................18
7ELECTRICAL COMPONENTS .......................................................................................................19
7.1 Electronic board........................................................................................................................19
7.1.1 Electronic board functions ..................................................................................................19
7.1.2 General structure of board memory ....................................................................................20
7.1.3 ROM.................................................................................................................................20
7.1.4 RAM.................................................................................................................................20
7.1.5 EEPROM..........................................................................................................................20
7.2 Conductimetric sensor ..............................................................................................................21
7.3 Terminal block with incorporated suppressor ..............................................................................21
7.4 Heater unit ...............................................................................................................................22
7.5 NTC sensor..............................................................................................................................22
7.6 Motor .......................................................................................................................................23
7.7 Door interlock...........................................................................................................................23
7.8 Canister filling pump (versions with canister in upper section)......................................................23
8ELECTRICAL CIRCUIT..................................................................................................................24
8.1 Electrical operation ...................................................................................................................24
9DIAGNOSTICS SYSTEM ...............................................................................................................25
9.1 Access to diagnostics................................................................................................................25
9.2 Exiting the diagnostics system...................................................................................................25
9.3 Phases of the diagnostics system..............................................................................................25

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10 ALARMS....................................................................................................................................27
10.1 Displaying the alarms to the user ...............................................................................................27
10.1.1 Alarm display during normal operation................................................................................27
10.2 Reading the alarm codes...........................................................................................................28
10.2.1 Displaying the alarm code ..................................................................................................28
10.2.2 Example of display of alarm code .......................................................................................28
10.3 Rapid reading of the alarm codes ..............................................................................................29
10.4 Cancelling the last alarm memorized..........................................................................................29
10.5 Notes concerning certain alarm codes........................................................................................29
10.6 Table of alarms.........................................................................................................................30
11 NO ACCESS TO DIAGNOSTICS PROGRAMME .........................................................................32
11.1 No LEDs on the electronic board light ........................................................................................32
11.2 Some of the LEDs on the electronic board light...........................................................................32
12 TABLES OF DRYING CYCLES...................................................................................................33
12.1 Key..........................................................................................................................................33
12.2 Cotton cycles............................................................................................................................35
12.3 EASY-IRON CYCLE .................................................................................................................35
12.4 SYNTHETICS cycles ................................................................................................................36
12.5 DELICATES cycles...................................................................................................................36
12.6 BABY cycle..............................................................................................................................37
12.7 WOOL cycle.............................................................................................................................37
12.8 DRY-CLEANING cycle..............................................................................................................37
13 ACCESSIBILITY OF COMPONENTS ..........................................................................................38
13.1 Door ........................................................................................................................................38
13.1.1 Fluff filter fitted inside door .................................................................................................38
13.1.2 Fluff filter support...............................................................................................................38
13.1.3 Lower fluff filter..................................................................................................................38
13.1.4 Drum light (not all models) .................................................................................................38
13.2 Work top ..................................................................................................................................38
13.2.1 Front brush of conductimetric sensor ..................................................................................38
13.2.2 Control panel support assembly .........................................................................................39
13.2.3 Control panel.....................................................................................................................39
13.2.4 Electronic board ................................................................................................................39
13.2.5 Programme selector rear section........................................................................................39
13.2.6 Pushbuttons ......................................................................................................................39
13.2.7 Canister container (models with canister in upper section) ...................................................40
13.3 Removal of the cover and rear panel gives access to:.................................................................40
13.3.1 Heater unit........................................................................................................................40
13.4 Removal of the left-hand side panel gives access to:...................................................................41
13.4.1 Floating microswitch..........................................................................................................41
13.4.2 Float .................................................................................................................................42
13.4.3 Pump (models with canister in upper section)......................................................................42
13.5 Door interlock...........................................................................................................................43
13.6 Removal of the right-hand side panel gives access to: ................................................................43
13.6.1 Motor capacitor .................................................................................................................43
13.6.2 NTC sensor.......................................................................................................................43
13.6.3 Rear air duct cover (hot air circulation)................................................................................44
13.6.4 Rear air duct cover (cold air circulation) ..............................................................................44
13.6.5 Drum rotation motor...........................................................................................................44
13.7 Removal of the front panel gives access to:................................................................................45
13.7.1 The front panel..................................................................................................................45
13.8 Removal of the plinth gives access to:........................................................................................45
13.9 Removal of the rear panel gives access to:.................................................................................46
13.9.1 Rear brush (conductimetric sensor) ....................................................................................46
13.9.2 Rear panel ........................................................................................................................46
13.9.3 Drive belt ..........................................................................................................................46
13.9.4 Drum................................................................................................................................46
13.9.5 Duct..................................................................................................................................46
13.9.6 Duct rollers........................................................................................................................47
13.9.7 Front and rear seals...........................................................................................................47
14 REVERSIBILITY OF THE DOOR ................................................................................................48
15 FINAL TESTING OF DOOR CLOSURE .......................................................................................50

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1Purpose of this Manual
The purpose of this Service Manual is to provide service engineers who already have the basic knowledge
necessary to repair dryers with information concerning condenser dryers with electronic control systems
(mod. EDR1000NEW) produced in the factory in Porcia (Italy).
The EDR1000NEW control system features a single PCB that incorporates the power and display functions
and a maximum of 13 LEDs and 5 switches. This PCB can be used with conductimetric condenser models
as well as vented dryers.
This Service Manual describes the following aspects:
•General characteristics
•Control panel and drying programmes
•Technical characteristics
•Accessibility
•Diagnostics guide
2IMPORTANT
2.1 Safety
ðRepairs to electrical appliances must be effected only by qualified service engineers.
ðBefore touching internal components, always remove the plug from the power socket.
2.2 Installation
ðThe appliance must be installed on a perfectly level surface in order to ensure that the condensed water
flows correctly into the tank.
ðThe feet must NOT be removed. The gap between the bottom of the dryer and the floor is essential to
prevent overheating.

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3GENERAL CHARACTERISTICS
The EDR1000NEW control system consists of a
single PCB which incorporates three functions: power,
control and display. This PCB is fitted to
conductimetric condenser dryers (i.e. those in which
the steam is condensed inside the appliance).
The PCB is inserted into a plastic casing, which is attached to the rear side of the control panel support.
The PCB is available in two basic versions: one with four pushbuttons, the other with five.
Dimensions of appliance §Height:
§Width:
§Depth:
85 cm
60 cm
58 cm
Power supply §Volt:
§Hz: 220-240 50
No. pushbuttons §"5-pushbutton" version :
§"4-pushbutton" version” : 4 options + start/pause 3 options + start/pause
No. LEDs §"5-pushbutton" version :
§"4-pushbutton" version” : 13 10
Buzzer §buzzer incorporated in the PCB
Serial port §DAAS-EAP protocol up to 38400 baud
Programme selector §16 positions with main switch (incorporated in the PCB)
Drying system §condensation of humidity by heat exchanger
Humidity control §conductimetric sensor
Motor §single-phase asynchronous motor with capacitor
Power of heater unit §2400 W version:
§2000 W version: 1400W + 1000W 1400W + 600W
Temperature control §NTC sensor
Capacity of canister §4 litres approx.
Canister fill pump (models
with canister in upper
section)
§Synchronous motor
4CONTROL PANEL
The form of the control panel depends on the styling (Delta -Sigma) and the number of pushbuttons (4 or
5).
Example of “Delta” styling control panel
Example of “Sigma” styling control panel

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4.1 Four-pushbutton control panel
The control panel -as well as the four pushbuttons -features ten LEDs and a programme selector. The
options can be selected only after selecting a drying programme using the selector. In this situation, the
phase LEDs light and LED L4 (start/pause) flashes. When an option is selected, the corresponding LED
lights.
The functions of the pushbuttons and the LEDs depend on the configuration code of the appliance;
the configuration used in most models is shown below.
Pushbuttons "CYCLE PHASE" LEDs "WARNING" LEDs
1–No buzzer
2 –"Quick"
3–Delicate drying
4–Start/Pause
L5 –Drying
L6 –Cooling
L7 –Anti-crease/End-of-cycle
L8 –Filter cleaning
L9 –Canister full
L10 –Condenser cleaning
4.2 Five-pushbutton control panel
As well as the five pushbuttons, the control panel features thirteen LEDs and a programme selector.
The options can be selected only after selecting a drying cycle using the selector. In this situation, the phase
LEDs light, and LED L7 (start/pause) flashes. When an option is selected, the corresponding LED lights.
The functions of the pushbuttons and the LEDs depend on the configuration code of the appliance; the
configuration used in most models is shown below.
Pushbuttons "CYCLE PHASE" LEDs "WARNING" LEDs
1–No buzzer or "Quick"
2 –"Quick" or No buzzer
3–Delicate drying
4–Delayed start
5–Start/Pause
L8 –Drying
L9 –Cooling
L10 –Anti-crease/End-of-
cycle
L11 –Filter cleaning
L12 –Canister full
L13 –Condenser cleaning

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4.3 Description of pushbuttons and LEDs
4.3.1 "NO BUZZER" pushbutton
This option can be selected only when the dryer is in "selection" mode (set-up).
Press this pushbutton to disactivate the buzzer function. The LED lights to indicate this selection. To
re-activate the buzzer function, press the pushbutton again; the LED will switch off. Even when the
buzzer function is disactivated, the buzzer will continue to signal alarm conditions and warnings.
“NO BUZZER” (not only for the affected cycle)
Setting to be made during the selection phase (set-up):
press simultaneously for two seconds the pushbuttons 1/2for the four-pushbutton control panel and
2/3 for the five-pushbutton panel.
To reset the buzzer press the pushbutton combination relative to the control panel until the buzzer
emits a “beep”.
4.3.2 "QUICK" pushbutton
Select this option to reduce the duration of the drying cycle selected.
The corresponding LED lights when the "QUICK" option has been selected. If the button is pressed
again, the LED will switch off to indicate that the option has been disactivated.
4.3.3 "DELICATE DRYING" pushbutton (half power)
This dryer features a heating group with two separate heating elements whose power varies
according to the model.
When this pushbutton is pressed once, the electronic control system switches off the lower-power
heating element, and the corresponding LED lights to indicate that the option has been selected. If
the pushbutton is pressed again, the LED switches off to indicate that the option has been
disactivated, and the heating element switches on again during the cycle.
4.3.4 "DELAYED START" pushbutton
The "DELAYED START" option must be selected before pressing START/PAUSE.
This option enables the user to delay the start of the drying cycle.
The delayed-start function consists of three combinations, depending on the configuration of the dryer:
Delay time (hours)
Led Version 1 Version 2 Version 3
L4 369
L5 246
L6 123
Press the pushbutton to select the delay time. Each time the button is pressed, the time indicated by
the corresponding LED will change, starting from the maximum delay time and decreasing to the
minimum time; pressing the button again at this point will cancel the delayed-start option.
If START/PAUSE is pressed during the delayed-start countdown, the dryer goes into standby mode;
press START/PAUSE again to resume the countdown from the point at which it was interrupted.
4.3.5 "START/PAUSE" pushbutton
§Start
When a drying programme has been selected using the programme selector, the LEDs for the three
phases (drying, cooling and -if featured -anti-crease/end of cycle) light and the START/PAUSE
LED flashes.
After selecting the desired option(s), press this button to start the cycle. The corresponding LED, as
well as the drying phase LED, remains lit.
§Pause
If START/PAUSE is pressed while a drying cycle is being performed, the dryer interrupts the cycle
and the appliance goes to PAUSE mode; the corresponding LED flashes.
Certain options may be modified while the appliance is in PAUSE mode.
Press START/PAUSE again to resume the cycle from the point at which it was interrupted.

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4.3.6 "CYCLE PHASE" LEDs
§Drying: lights during programme selection and when the dryer is performing the DRYING cycle.
§Cooling: lights during programme selection if the programme selected includes a COOLING phase, and
also when the dryer is performing the COOLING cycle.
§Anti-crease / End of cycle: lights during programme selection if the programme selected includes an
ANTI-CREASE phase; it also lights while the dryer is performing the ANTI-CREASE phase and at the
END of the CYCLE.
4.3.7 WARNING LEDs
§Filter cleaning: lights when the dryer has completed the cycle to remind the user to clean the fluff filter.
§Canister full: lights during the drying cycle if the electronic circuit detects the closure of the floating
microswitch, and at the END of the CYCLE to remind the user to empty the canister.
§Condenser cleaning: lights after 80 drying cycles.
4.4 Programme selector
The 16-position programme selector (with incorporated ON/OFF switch) is built into the board.
The first nine positions are common to all versions (i.e. always select the same programmes); programmes
10 to 14 vary according to the configuration of the appliance.
SELECTOR
POSITION CYCLE
0OFF/CANCEL
1EXTRA-DRY COTTON
2CUPBOARD-DRY COTTON (EXTRA)
3CUPBOARD-DRY COTTON (NORMAL)
4SLIGHTLY DAMP COTTON
5IRON-DRY COTTON
6MACHINE-IRON COTTON
7EXTRA DRY -SYNTHETICS
8CUPBOARD DRY -SYNTHETICS
9IRON-DRY -SYNTHETICS
10 Configurable
11 Configurable
12 Configurable
13 Configurable
14 Configurable
15 COOLING
Configurable programmes
Positions 10 -14 can be configured for the following cycles
SELECTOR
POSITION CYCLE
DURATION 30 MINUTES
DURATION 60 MINUTES
DURATION 90 MINUTES
EASY-IRON
DRY CLEANING
BABY
DELICATES
10, 11, 12,
13, 14
WOOL

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4.5 Options
The table below lists the possible options for the drying programmes, their compatibility with other options
and with the various cycles, and when they can be selected or modified.
OPTIONS
DELAYED START
DELICATE DRYING
(half power)
QUICK
NO BUZZER
EXTRA-DRY XXXX
CUPBOARD-DRY (EXTRA) XXXX
CUPBOARD DRY (NORMAL) XXXX
SLIGHTLY DAMP XXX
IRON-READY XXX
COTTON
MACHINE IRONING XXX
EXTRA-DRY XXX
CUPBOARD DRY XXX
SYNTHETIC IRON READY XXX
90 min. XXX
60 min. XXX
TIME 30 min. XXX
EASY IRON XXX
DRY CLEANING XXX
BABY XXX
MIXED LOADS XX
WOOL XXX
Compatibility with programmes
COOLING X
DELAYED START XXX
DELICATE DRYING (half power) XX
QUICK XX
Compatibility
with options NO BUZZER XXX
SELECTION (set-up) XXXX
DRYING (paused) X
COOLING (paused)X
ANTI-CREASE (paused)
Phases in
which
selection /
modification
is possible DELAYED START (paused) XXXX

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4.6 Adjusting the level of conductivity
The conductivity of the water used to wash the fabrics varies from zone to zone. The conductimetric sensor
is calibrated to a standard value: any major variations in the level of conductivity may affect the final drying
result (i.e. the washing may be too dry or too humid):
These variations are more noticeable in the "slightly damp" or "iron-ready" cycles; the "cupboard dry cycles
are almost entirely unaffected by variations in conductivity.
The sensitivity of the conductimetric sensor can be adjusted according to the conductivity of the water as
follows:
4.6.1 Procedure
4-button version 5-button version
To access adjustment mode:
1. Turn the programme selector to switch on the appliance
2. In selection mode (set-up), simultaneously press the following buttons:
ðbuttons 1and 3for the four-button version
ðbuttons 2and 4for the five-button version
3. Hold the buttons down until the LEDs above each begin to flash, the buzzer sounds and one of the LEDs
indicating the drying phase lights (approximately 5 seconds).
Adjusting the level of conductivity:
ðPress the START/PAUSE button sequentially: the level of conductivity is indicated by the phase LEDs,
which light in various combinations as follows:
LED lit Conductivity Approximate value (µS/cm)
End of cycle Low < 300
Cooling Medium 300 -600
Drying High > 600
Normally, the appliance is factory-set to the lowest level; however, certain models may be configured
differently. Your local water supply company can give you information concerning the conductivity of the
water in your area.
Memorizing the new setting:
1. Simultaneously press the following buttons:
ðbuttons 1and 3for the four-button version
ðbuttons 2and 4for the five-button version
1. Hold the buttons down until the LEDs above each (except the PAUSE LED) stop flashing and the buzzer
sounds.

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4.7 Description of operation
4.7.1 Selection phase
When the selector is turned from OFF to a drying programme, the LEDs corresponding to the phases of the
programme light, and the START/PAUSE LED begins to flash.
During this phase ("selection" or "set-up" phase) the various options can be entered, and the corresponding
LEDs will light.
The drying cycle commences as soon as the START/PAUSE pushbutton is pressed.
If an option that is incompatible with the selected programme is entered, all
the phase/warning LEDs flash three times and the buzzer sounds to warn
the user that the option is incorrect.
If the programme selector is turned after selecting the options but before pressing START/PAUSE, the
options selected will be cancelled.
4.7.2 Cycle operation
A drying cycle starts after (a) a programme has been selected using the selector, (b) one or more options (if
desired) have been selected and (c) the START/PAUSE pushbutton has been pressed.
The LED corresponding to the START/PAUSE button remains lit and, at the same time, the LED
corresponding to the phase currently being performed lights.
The drying cycle consists of the following phases:
§DRYING
If the cycle is automatic, its duration will be the time necessary to remove the humidity until the desired
degree of final humidity is reached (maximum cycle time is 180 minutes for full power and 240 minutes
for half power).
If the cycle is timer-controlled, the duration will be the time selected by the user.
§COOLING
For timer-controlled cycles, the maximum duration of the cooling phase is 10 minutes; for automatic
cycles the duration depends on the temperature inside the drum (i.e. may be shorter).
§ANTI-CREASE
The duration of the anti-crease cycle is 30 minutes.
No modifications to the programmes can be entered after the drying programme has started.
If the position of the selector is changed, or if one of the option buttons is pressed, all the LEDs begin to flash
and the buzzer sounds to warn the user that an incorrect operation has been attempted.
The options can be selected only after selecting a drying programme and before pressing START/PAUSE.
To cancel a drying cycle, it is necessary to turn the programme selector to OFF.
4.7.3 Operation in PAUSE mode
If START/PAUSE is pressed while a drying cycle is being performed, the dryer interrupts the current cycle
and enters PAUSE mode. The corresponding LED lights.
If the selector is turned, all the phase LEDs flash three times and the buzzer sounds to alert the user of the
error. In this situation, only certain options can be modified (see table of options, page 10).
If the button relative to an option that cannot be selected is pressed, the corresponding LED flashes and the
buzzer sounds to warn the user of the error.
When START/PAUSE is pressed again, the drying cycle resumes from the point at which it was interrupted.

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4.7.4 Operation in DELAYED START mode
This function is possible only on appliances with five-button control panels.
The delay time option is configurable; therefore, certain dryers can be set to 1-2-3 hours, some to 2-4-6
hours, the others to 3-6-9 hours.
The delay time must be entered before pressing START/PAUSE.
To select this option, press DELAYED START as follows:
-when pressed once, the LED corresponding to the maximum delay time lights.
-when pressed twice, the LED corresponding to the intermediate time lights.
-when pressed three times, the LED corresponding to the shortest delay time for the start of the drying
cycle.
This option can be cancelled in one of three ways:
-by pressing the button for the fourth time
-by turning the selector knob to OFF
-by turning the selector knob to any position (all the options are cancelled).
To start a cycle using the DELAYED-START option, use the selector knob to select a drying programme,
then press DELAYED START and select the desired delay time for the start of the cycle, then press
START/PAUSE. The dryer will remain in standby mode until the delay time has elapsed, after which the
cycle will start automatically.
If the selector is turned during the delayed-start countdown, or if an option is selected during this time, the
phase LEDs flash three times and the buzzer sounds to warn the user of the error.
If the START/PAUSE button is pressed during this drying cycle, the dryer goes to STANDBY mode; when
START/PAUSE is pressed again, the cycle resumes from the point at which it was interrupted.
4.7.5 Buzzer
The electronic control system also features a buzzer which sounds in the following circumstances:
Type of sound Meaning
Programme selection
1 “bip” Option selection
3 “bips” Incorrect selection
1 “bip” every 24 seconds Anti-crease phase
1 “bip” every 15 seconds End of cycle
Canister full
Door of heat exchanger open
Sequence of 4 “bips” of different tonality,
repeated every 7 seconds Condenser clogged
4.7.6 Power failure
The table below shows how the dryer behaves in the event of a power failure during a drying cycle.
Before the power failure After power is restored
Set-up Set-up
Drying cycle Pause
Cycle paused Pause
Anti-crease phase End of cycle
Delayed-start cycle Delayed-start cycle paused
Delayed start cycle paused Delayed start cycle paused
End of cycle End of cycle
"Canister full" alarm "Canister full" alarm

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5DEMO mode
This is a demonstration function that can be used by the retailer to demonstrate the operation of the
appliance to customers. The duration is about five minutes.
When the appliance is in DEMO mode, the heating elements are not powered and the various phases are of
abbreviated duration; the washing inside the drum is not controlled in any way.
5.1 Selecting DEMO mode
1. The appliance must be switched off.
2. Press START/PAUSE and any of the option buttons simultaneously.
3. Holding the two buttons down, switch the appliance on by turning the programme selector knob two
positions clockwise.
4. Hold the two buttons down until the LEDs begin to flash (about 5 seconds) and the buzzer sounds.
5. Select the various options.
6. Press START/PAUSE to start the DEMO cycle.
5.2 Exiting DEMO mode
§To exit DEMO mode, switch off the appliance by turning the programme selector to 0(zero)

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6STRUCTURAL AND FUNCTIONAL CHARACTERISTICS
6.1 Drying circuit
Version with canister in upper section Version with canister in lower section
There are two air circuits inside the dryer:
-the first is a warm-air circuit, which is sealed within the appliance
-the second is an open cold-air circuit, which circulates air from the ambient through certain sections of the
appliance
In the sealed warm-air circuit, the air circulates inside the appliance:
The fan (1), ducts the air through a heat exchanger (5), and then to the heater unit (2). The heater unit heats
the air, which is then ducted into the drum through the perforations in the rear flange of the drum. The warm,
dry air passes through the wash load, which is agitated by the rotation of the drum, and removes the
humidity from the fabrics; the air, which is now warm and humid, then passes through the front aperture of
the drum via the fluff filter (3) and the lower filter (4), then the air is ducted by the fan (1) to the heat
exchanger (5), where the humidity is condensed.
The air coming from the heat exchanger is now dry and the cycle continues as described above.
The cold-air circuit (the air circulates in one side of the appliance) is not sealed.
The fan (6) draws in air through an air intake on the rear of the appliance, and ducts the air to the heat
exchanger (5), cooling it, after which the air is expelled on the opposite side of the heat exchanger
dissipating inside the appliance and exiting from the venting grille in the plinth.
The warm and cold air circuits cross inside the heat exchanger (5), which results in a thermal exchange
which condenses the humidity contained in the warm air.
The condensation water, which forms in the heat exchanger, is collected in a sump (7) which contains a float
(9).
ØIn versions with the canister in the upper section, a pump (11) ducts the water from the sump (7) to the
canister (8). When the canister is full, any overflow is collected in the canister support and returned
through a tube (not shown in the figure) into the sump (7). This causes the float (9) to rise, thus actioning
the microswitch (10).
ØIn versions with the canister in the lower section, the water flows by gravity from the sump (7) into the
canister (8); when the canister is full, the water level in the sump (7) rises. This causes the float (9) to
rise, thus actioning the microswitch (10).
The electronic control system detects the closure of the microswitch, cuts off the power to the appliance and
switches on a LED warning the user that the canister is full.
The tank capacity is about 4 lt., which is sufficient for one drying cycle.

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6.2 Structural characteristics
Version with canister in upper section Version with canister in lower section
1 –Work top
2 –Control panel support
3 –Control panel
4 –Fluff filter
5 –Fluff filter support
6–Door seal
7 –Door internal frame
8 –Door external frame
9 –Rear panel cover protection
10 –Rear panel cover
11 –Rear panel
12 –Cross-member
13 –Side panels
14 –Upper tank
15 –Tank support
16 –Duct
17 –Front panel
18 –Base
19 –Heat exchanger
20 –Panel
21 –Plinth
22 –Front fluff filter
1 –Work top
2 –Control panel support
3 –Control panel
4 –Fluff filter
5 –Fluff filter support
6 –Door seal
7 –Door internal frame
8 –Door external frame
9 –Rear panel cover protection
10 –Rear panel cover
11 –Rear panel
12 –Cross-member
13 –Side panel
14 –Duct
15 –Front panel
16 –Lower fluff filter
17 –Base
18 –Heat exchanger
19 –Lower canister
20 –Panel
21 –Plinth
The front panel and the side panels are in enamelled sheet metal; the rear panel is in zinc-plated sheet
metal. The panels are secured to the base by self-tapping screws.
The shaped carboran base houses the main components.

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6.3 Drum
1 –Front flange
2 –Drum housing
3 –Rear flange
4 –Drum lifters
5 -Plastic band
The drum consists of two half-shells (front and rear) which are joined together by a wide plastic band (5).
Separation of the drum into two parts allows the conductimetric sensor to determine the conductivity of the
washing inside the drum.
Parts 1, 2 and 3 are connected by crimping.
The plastic lifters are secured by screws to the internal wall of the drum.
The various elements which make up the drum are in sheet steel.
The rear drum shaft is fitted to the rear flange using eyelet rivets.
6.4 Air seals and drum shaft supports
6.4.1 Rear air seal
1 -Rear seal (fitted to rear panel)
2 -Drum
3 -Rear panel
6.4.2 Rear drum support
4 –Anti-clutching washer
5 –Fixing ring (Benzing)
6 –Rear panel
7 –Drum spindle
8 –Support with bushing (fitted to the rear panel)
6.4.3 Front drum support and air seal
9 –Drum
10 –Felt ring with tubular support
11 –Duct
6.4.4 Lower drum support
9 –Drum
10 –Felt ring with tubular support
11 –Duct
12 –Drum support roller

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6.5 Hydraulic circuit (versions with canister in upper section)
1 –Pump immersed in the sump
2 –Water fill hose to canister (Red)
3 –Overflow drain hose (Transparent)
4 –Canister
The condensation water is ducted from the sump (1) to the tank (4) by the pump immersed in the sump via
the hose (2). When the canister is full the overflow is collected in the canister support and ducted to the
sump through the hose (3).
6.6 Drum rotation
1 –Motor
2 –Belt tensioner spring
3 –Belt tensioner
4 –Belt
The drum is rotated by a belt (4), which is driven by the pulley of the drum motor (1) fitted to the base; on the
bearing shield there is a belt tensioner (3), which has the function of increasing the winding angle of the belt
to the drum and works in conjunction with the belt tensioner spring (2).
Bidirectional operation of the drum rotation is determined by the electronic board which inverts the motor
power direction for brief periods. Reversal of the direction of rotation allows the clothes to unroll. During
these short periods, the heater unit is switched off.
The heat exchanger features a safety device which ensures that, if the panel is opened to check the heat
exchanger, a microswitch disconnects the dryer from the power supply.

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7ELECTRICAL COMPONENTS
7.1 Electronic board
The electronic board is housed inside a plastic casing and secured behind the control panel support.
The board is available in two basic versions: one with four pushbuttons, the other with five.
1. Electronic board -casing
2. Cover for connectors
3. Selector knob spindle
4. Support for pushbuttons
5. Pushbutton
6. LED diffuser
7.1.1 Electronic board functions
ðThe electronic board powers the main components: motor, pump (for dryers with canister in the upper
section), heater and door interlock.
ðThe board also controls the door interlock, the temperature of the air inside the dryer (using an NTC
sensor), the level of humidity of the washing (using a conductimetric sensor) and the level of
condensation water in the canister.
ðThe programme selector, pushbuttons and the buzzer are incorporated in the board.
ELECTRONIC BOARD
SENSORS
ELECTRICAL
LOADS
Buzzer
Programme
selector
Pushbuttons
LEDs
µP

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7.1.2 General structure of board memory
The system features an EEPROM, positioned externally to the microprocessor, which memorizes the
configuration data, the description of the cycle, the status of the appliance in case of a power failure, and the
alarms.
7.1.3 ROM
This area of the memory contains the "firmware" code including the functionalities of the appliance:
ðControl of electrical loads (motor, pump, heater)
ðControl of the sensors (NTC, conductimetric sensor, door switch status)
ðControl of the user interface
ðControl of the serial port
ðControl of power failures and alarms
ðExecution of the drying programme
In standard-production appliances, this area is a Read-Only Memory, and thus cannot be modified.
7.1.4 RAM
This memory contains the variables, i.e. all the dynamic information used during execution of the
programme:
ðMachine status
ðCycle selected
ðAlarms
The contents of this memory are cancelled each time the appliance is disconnected (by switching off or in
the event of a power failure).
The contents can be read using a computer connected via a DAAS interface.
7.1.5 EEPROM
The EEPROM contains data of various types:
ðPower failure and machine status, i.e. the information necessary to resume operation of the appliance
after a power failure.
ðConfiguration of the drying cycle: this file describes the various steps in the drying cycle for each
family of appliances (vented, condenser etc.).
ðMachine configuration: the data contained in this area of memory define the configuration of the
individual appliance, and are interpreted by the functional software. These files define the following:
-Programmes
-Number of buttons and their functions
-Operation of the LEDs
-Operation of the buzzer
-Operational limits (voltage/frequency)
-Identification of the appliance (PNC + ELC + serial number)
-Heater unit power
-Preferential direction of motor rotation
ROM RAM
EEPROM
(external to
the µP)
External
asynchronous
serial port
µP
Internal
synchronous
serial port
Power Failure and
machine status
Configuration of
the appliance
Description
of the cycle