Electrolux HEC-RIM SEries User manual

SERVICE MANUAL
WASHING
HEC-RIM HEC-ARCHED
©ELECTROLUX HOME PRODUCTS
ITALY S.p.A.
Spares Operations Italy
Corso Lino Zanussi,30
Publication
number
I - 33080 PORCIA /PN (ITALY) 599 70 40-15
Fax [phone]
Edition: 2007-08-11
EN
Washer-dryers
HEC-RIM
HEC-ARCHED
Structural characteristics,
electrical components,
accessibility

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CONTENTS
1PURPOSE OF THIS MANUAL...............................................................................................................4
2PRECAUTIONS......................................................................................................................................4
3DRYING SYSTEM: HYDRAULIC CIRCUIT............................................................................................5
4DRYING CIRCUIT ..................................................................................................................................6
5COMPONENTS ......................................................................................................................................7
5.1 Fan.....................................................................................................................................................7
5.2 Heating element casing.....................................................................................................................7
5.3 Duct....................................................................................................................................................8
5.4 Drying condenser...............................................................................................................................8
6ACCESSIBILITY .....................................................................................................................................9
6.1 Work top.............................................................................................................................................9
6.2 Electric fan.........................................................................................................................................9
6.3 Drying heating element....................................................................................................................10
6.4 Drying sensor (duct).........................................................................................................................11
6.5 Thermostats.....................................................................................................................................11
6.5.1 Manual-reset thermostat..........................................................................................................11
6.5.2 Automatic-reset thermostat......................................................................................................11
6.6 Drying sensor (humidity)..................................................................................................................11
6.7 Condenser .......................................................................................................................................12
6.8 Bellow seal.......................................................................................................................................13
6.9 WD Circuit board..............................................................................................................................14

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1 PURPOSE OF THIS MANUAL
The purpose of this manual is to provide service engineers who already have the basic skills necessary to
repair washing machines with specific information concerning the drying system featured in washer-dryers
with the HEC cabinet.
For information regarding the structural characteristics and the washing systems, refer to Service Manual:
N° 599 37 47-13 for washer-dryers HEC-RIM
N° 599 37 67-82 for washer-dryers HEC-ARCHED
For more detailed information regarding each model:
Circuit diagrams
Exploded views
Spare parts lists
Functional aspects and diagnostics
refer to the Service Manuals and Service Notes issued for each specific model/function.
2 PRECAUTIONS
Repairs to electrical appliances must be carried out by qualified persons only.
Before accessing internal components, always remove the plug from the power socket.
Where possible, measure the resistance (ohms) rather than directly measuring voltage or current.
Certain metal components may have sharp edges. Care should be taken to avoid cuts or abrasions.
Before laying the appliance on its rear or side, always drain the residual water using the special
drainage device located alongside the drain filter.
Never lay the appliance on its right side (where the electronic control system is located). This may
cause water to leak from the detergent dispenser drawer and onto the electrical components, which
might be short-circuited.
After effecting repairs, always test the appliance.

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3 DRYING SYSTEM: HYDRAULIC CIRCUIT
1. Solenoid valve
2. Tube between solenoid valve and
coupling
3. Coupling (Air-Break)
4. Condensation intake hose and vapour
outlet
The condensation is ducted by one of the sections of the cold water solenoid valve (1), which has a
delivery of about 0.4 litres per minute.
The solenoid valve is connected via a tube (2) to the coupling (3); the water arrives through a hose (4) to
the upper section of the condenser. At the same time, a small quantity of water is ducted from the coupling
to the detergent dispenser in order to ensure that there is always water in the siphon of the tube between
the detergent drawer and the tub; this prevents steam from escaping from the tub and the detergent drawer
during drying.
Cleaning the condenser
The condenser is cleaned at the beginning of the final rinse:
ªwhile the solenoid valve loads water and the drum is in movement, the fan switches on and draws
water (in movement) into the condenser. The force exerted by this water cleans the condenser.

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4 DRYING CIRCUIT
1. Fan
2. Electric fan
3. Casing and heating element
4. Duct
5. Bellow seal
6. Coupling between tub and
condenser
7. Condenser
8. Solenoid valve
9. Condensation intake tube and vapour
outlet
10. Tube between solenoid valve and air
break
11. Coupling (Air-break)
12. Filter body
13. Drain pump
The drying system is based on the principle of forced air with condensation by water jet. The drying
capacity is equal to about half the maximum load of dry washing. Therefore, when a full load is washed,
two drying cycles will be necessary. If a half load is washed, however, drying may be carried out
automatically at the end of the washing cycle.
During the drying phase, the drum rotates in alternate directions at low speed.
The fan ducts the heated air from the heating elements into the tub, which removes the humidity from the
washing.
The jet of cold water, coming into contact with the humid air, generates a heat exchange which condenses
the humidity. Cold, dry air is ducted to the fan and then again heated by the heating elements and re-
circulated inside the drum.
The cooling water and the condensation are expelled by the drain pump.
During the final minutes of the drying cycle, the heating elements switch off, but the fan continues to
function in order to complete the drying phase.

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5 COMPONENTS
5.1 Fan
1. Fan unit
2. Fan motor
3. Drive belt
The fan ducts the air from the condenser to the casing containing the heating elements.
The fan is powered by the fan motor via a drive belt.
1. Fan cover
2. Fan duct
3. Spacer
4. Bearings
5. Seeger ring
6. Spindle anchor
7. Drive belt
8. Fan blade
9. Locknut
5.2 Heating element casing
1. Casing
2. Manual-reset thermostat
3. Automatic-reset thermostat
4. Dryer heating element
The heating element casing comprises two aluminium alloy half-shells which are connected together by
screws and a silicone sealant.
The air is heated by two heating elements of equal power; during delicate drying, one of these elements is
switched off.
The casing also contains a service thermostat and a safety thermostat.

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5.3 Duct
1. Duct
2. NTC temperature sensor (drying)
The air from the heating element(s) is ducted directly into the tub
through the bellow seal.
An NTC sensor fitted to the tub measures the drying temperature.
This sensor consists of two identical PVC elements welded
together face to face and anchored by a screw to the front panel.
A steel clamp ensures water-tightness with the bellow seal.
5.4 Drying condenser
1. Condenser
2. Sleeve
3. Fan
4. Condensation intake tube
and vapour outlet.
5. Drain pump
The drying condenser consists of a plastic structure (1) connected to the lower section of the tub by a
rubber sleeve (2), which contains a sensor for measurement of the humidity, and from the upper section to
the fan (3).
The warm, humid air enters through the lower section of the condenser, and a jet of water enters from the
upper section.
The shape of the condenser creates turbulence between the flow of warm, humid air and the jet of cold
water, which condenses the humidity contained in the air. Cold, dry air is ducted to the fan for re-circulation
and heated by the heating unit.
The condensation and the cooling water pass through the hose (2) to the bottom of the tub and are
expelled by the drain pump (5).

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6 ACCESSIBILITY
6.1 Work top
Remove the two screws which secure the top to the rear of the appliance, then push the top towards the
rear and remove.
6.2 Electric fan
ªRemove the screw which secures the plastic duct to the
front panel. (a)
ªRemove the screw which secures the plastic duct to the
heating element casing. (b)
ªRemove the two screws which secure the heating element
casing to the cross-member. (c)
ªRemove the screw which secures the electric fan to the
heating element casing. (d)
ªRemove the screws which secure the fan to the cabinet (e) and
to the cross-member. (f)
ªPush the heating element casing downwards.
ªDetach the heating element casing from the fan unit and the
duct.
ªDetach the steam venting tube from the coupling on the fan
unit.
c
d
e
f
b
c
b
c
d
c
a

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ªTurn the fan unit clockwise as shown in the figure.
ªPosition the fan between the condenser and the heating
element casing.
ªLift and remove the fan unit.
6.3 Drying heating element
ªRemove the screw which secures the plastic duct to the
heating element casing. (b)
ªRemove the two screws which secure the heating element
casing to the cross-member. (c)
ªRemove the screw which secures the fan to the heating
element casing. (d)
ªRemove the screws which secure the fan to the cabinet (e) and
to the cross-member. (f)
ªDetach the heating element casing from the fan unit as
described in the previous paragraph.
ªDetach the connectors (note their positions carefully).
ªRemove the two screws which secure the heating element to
the casing and remove the heating element.
ªWhen re-assembling, ensure that the heating element and the
gasket are positioned as follows:
-the heating element must be positioned perfectly inside the
casing
-the gasket must be positioned so that no heat loss occurs.
c
e
f
b
c
d
c

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6.4 Drying sensor (duct)
ªDetach the connectors.
ªRemove the two screws which secure the sensor to the duct
and remove the sensor.
ªWhen re-assembling, ensure that the gasket is correctly
positioned.
6.5 Thermostats
6.5.1 Manual-reset thermostat
ªDetach the connectors.
ªRemove the two screws which secure the thermostat to the
duct and remove the thermostat.
ªWhen re-assembling, ensure that the gasket is correctly
positioned.
6.5.2 Automatic-reset thermostat
ªDetach the connectors.
ªRemove the two screws which secure the thermostat to the
duct and remove the thermostat.
ªWhen re-assembling, ensure that the gasket is correctly
positioned.
6.6 Drying sensor (humidity)
ªRemove the sensor from the sleeve between the condenser
and the tub.

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6.7 Condenser
ªRemove the work-top.
ªRemove the screws which secure the rear panel to the cabinet.
ªDrain any residual water from the drain filter.
ªRemove the fan unit (see paragraph 6.2 page 9).
ªRemove the humidity sensor (see paragraph 6.6 page 11).
ªRemove the screw from the clamp which secures the sleeve to
the tub.
ªUse pliers to loosen the clamp which secures the drain hose
(inside the appliance) to the drain pump and remove the hose.
ªRemove the vapour venting tube from the condenser.
ªRemove the condenser from the coupling (air-break) and
detach by moving rightwards (viewing the appliance from the
rear).

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ªTo detach the external drain hose, remove the screw from the
clamp which secures the external drain hose to the internal
drain hose.
ªRemove the screw (g).
ªPress the catch (h).
ªMove the condenser upwards and inwards in order to detach it
from the cabinet (see opposite fig.).
ªRemove the condenser.
6.8 Bellow seal
ªRemove the screw which secures the duct to the front panel
and the casing.
ªDetach the circulation tube from the seal (Jetsystem
appliances only).
ªRemove the wire clamp which secures the seal to the duct.
h
g
h

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6.9 WD Circuit board
ªRemove the screw which secures the circuit board to the
cross-member.
ªIf necessary, cut the cable ties.
On completion of repairs, replace the cable ties.