Electrolux ComfortLift ESF8735ROX User manual

Copyright2017ELECTROLUXHOMEPRODUCTSPTYLTDTechnicalServices 
SERVICE MANUAL
DOMESTIC HOUSEHOLD ComfortLift
DISHWASHERS
ELECTROLUX HOME PRODUCTS PTY LTD
ABN 51 004 762 341
Issue: 2
Technical Publication Nº DWSI1012 Date: 11/17

CONTENTS
1. Purpose of this manual.................................................................................................................3
2. Precautions....................................................................................................................................3
3. Technical details ...........................................................................................................................4
3.1. Product overview....................................................................................................................... 4
3.2. Structural Parts.......................................................................................................................... 5
3.3. Base...........................................................................................................................................6
3.4. Bottom tray................................................................................................................................. 7
3.5. Water circuit............................................................................................................................... 8
3.6. Hydraulic circuit .........................................................................................................................9
3.7. Sump Circ Motor and Heater ................................................................................................. 11
3.8. Sump and drain system.......................................................................................................... 14
3.9. Flow controller ......................................................................................................................... 16
3.10. Pressure sensor .................................................................................................................. 17
3.11. Turbidity sensor (High power sensor)................................................................................ 18
3.12. Automatic Cycle: AutoSense.............................................................................................. 19
3.13. Global Dispenser................................................................................................................. 20
3.14. Multi Dosage – Specification .............................................................................................. 21
3.15. XtraDry option...................................................................................................................... 23
3.16. DAAS / Sidekick connector................................................................................................. 23
3.17. Door Lock with Auto Door Opening – 2nd generation...................................................... 24
3.18. Electronic Main Boards....................................................................................................... 31
3.19. Components check.............................................................................................................. 36
3.20. Water Reuse N/A .................................................................................................................. 37
3.21. Comfort Rails ....................................................................................................................... 39
3.22. Comfort Lift .......................................................................................................................... 42
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1. Purpose of this manual
The purpose of this Service Manual is to provide Service Engineers with technical information
regarding the new range of “Dorotea” dishwashers and to give a description of the service
functionality.
This Manual describes:
•General characteristics
•Technical characteristics
•Guide to diagnostics
2. Precautions
Electrical appliances must be serviced only by qualified
Service Engineers.
Always remove the plug from the power socket before
touching internal components.
3/60

3. Technical details
3.1. Product overview
Global hydraulics
Sidekick connection possible also
from the front of the appliance
PB100 / PB200 Main board
Wash pump with integrated
heater
Thin inner door with Global
dispenser
Global door lock with auto
door opening integrated
4/60

3.2. Structural Parts
1- Counterweights
2- Base
3- Bottom tray
4- Inner fire shield
5-
GMB Box (Covered in
Electronic System)
6-
Metal cover
The counterweight slides under the rear bar and is attached with 2 screws in
the base.
4
1
2
5
3
6
5/60

3.3. Base
Rear side
1-
Ribs to prevent that water
sprays in to the circuit board
if the hose is damaged on
the outside just after coming
out from dishwasher
2-
Area for swing in and attach
the counter weights with
screws
3-
Water outlet
4-
Channels for inserting the
hooks from the mainboard
box when assembling
5-
Ribs to prevent cables from
mainboard to fall down
6-
Water inlet
Inner side
1-
Holder for active drying
hose
2-
Cable exit and holders for
cables
3-
Holder for float switch
2
5
3
6
4
1
2
3
1
6/60

3.4. Bottom tray
Details
1- Screw bosses that is only
planned to be backup if the
snaps fails
2- Snaps for assembling tray to
base
3-
Ribs to help controlling the
mov
ement when assembling
the tray
4-
Ribs to lift cable to prevent
them from reaching the
water
5-
Dents for rubber fixation of
motor
Assembly instructions
1-
Insert bottom tray (without
metal feet), the tabs on the
tray must match the slots in
the base.
The tray should be
horizontal if the machine
lays on its back
2-
Keeping bottom tray pushed
inwards, rotate it into place
1
2
4
5
3
1
2
7/60

3.5. Water circuit
WASH PUMP
+ HEATER
SENSOR
PRESSURE
TURBIDITY
SENSOR
AQUA CONTROL
DRAIN PUMP
WATER OUTLET
BLENDED
FUNCTION
REGENERATION VALVE
WATER INLET
Reg Water
resin
salt
TUB
SUMP
8/60

3.6. Hydraulic circuit
1-
Drain hose.
2-
Wash pump
with integrated
heater
3-
Hose pump-sump
(included with sump)
4-
Drain pump
5-
Sump
6-
Hose pump-
FC/FD (included
with pump)
7-
Flow
controller (FC)
or Flow distributor
(FD)
8-
Hose softener-
sump
9-
Sensors
1
2
3
6
7
8
9
5
4
9/60

1-
Pressure sensor with radial
sealing
2-
Pressure sensor snap:
- robust snap from bottom
- ribs in sump to limit
rotation
- half round rib to limit
move upward
3-
Harness snaps
1-
Softener-sump hose:
Corrugated pressed and
sealed using o-ring
compression. Symmetrical
connectors from sump and
softener side.
Proper assembly: must put
hose to the sump and than
to the softener.
2-
Overflow hoses:
The same parts for both
sides. Position provided by
friction with sump ribs.
Ribs are indicating correct
assembly position
3-
Secure that the hose
pointing towards the front of
the DW is not routed outside
indicated yellow circle.
1
3
2
2
1
3
10/60

3.7. Sump Circ Motor and Heater
Main Pump assembly:
- Common interface with new volute
- Basement fixation is same
- Includes hose to flow controller
- Includes pump-sump hose
- Includes Omega heater
- Includes steel shield around
For both motors the heater is available as separate spare part
1- BLDC motor with Flow Control 2- Omega heater
3- Clamps 4- Asynchronous motor with FD
1
2
3
4
2
3
11/60

Single phase asynchronous washing pump motor with FD
Three phase washing pump BLDC motor with FC
230/240 V 50/60 Hz Class F
Resistance: 1-2: 56 ohms/2-3: 56 ohms/3-1: 56 ohms
Connection-plan
BLUE
BROWN
AUX
MAIN
1 WHITE
2 BROWN
12/60

Omega heater:
1-
Electric connection of the
heater
2-
Ground connection
Voltage EU 220-240 V, Power: 1800 W
Voltage EU 220-240 V, Power: 2040 W
1- Heater Cover
2
1
1
13/60

3.8. Sump and drain system
Three-phase Synchronous BLDC motor
1-
Cuff on drain hose:
- Clamped to drain outlet.
- Positioned by rib in sump
and ribs in cuff.
2-
Drain pump (Three-phase
Synchronous BLDC motor):
- Fixed directly in sump built-
in volute using
- Bayonete system
- Back of protection hook
provided for motor
Single-phase Synchronous motor
3-
Cuff on drain hose:
- Clamped to drain outlet.
- Positioned by rib in sump
and ribs in cuff.
4-
Drain pump (Single-phase
Synchronous motor ):
- Fixed directly in sump built-
in volute using
- Bayonete system
- Back of protection hook
provided for motor
1
2
3
4
14/60

Drain pump - Three-phase Synchronous BLDC motor
Voltage 230 V 50 Hz
Power: 21 W  resistance 93 ohms +/- 10%
Max flow rate: 15 litre/min
1-
Cover
2-
Housing
3-
Triple bayonet fixation
aligned into sump connector
4-
Motor driver (not incl. in
assembly)
5-
Motor
6-
Power supply
Drain pump - Single-phase Synchronous motor
Voltage 230 V 50 Hz
Power: 30 W  resistance aprox 225 ohms
Max flow rate: 15 litre/min
1
2
3
4
5
6
15/60

3.9. Flow controller
Details
The flow controller is designed to control the water flow towards the
top spray arm only, bottom spray arm only or towards both spray
arms.
1-
Water outlet to lower spray
arms
2-
Water outlet to upper spray
arms
3-
Water inlet from wash pump
1-
Micro switch
2-
Synchronous motor
230V AC, 50/60Hz
2.5/3 rounds/minute
Counterclockwise direction
1
2
1
2
3
16/60

3.10. Pressure sensor
Details
1-
Pressure sensor with radial
sealing
2-
Pressure sensor snap:
robust snap from bottom
ribs in sump to limit rotation
half round rib to limit move
upward
Frequency output (0-5V Signal),
Range: 0-300mm
Connection: 3 connectors RAST 2.5mm
Pressure
mmWc/PA
Frequency
Tolerance 20⁰C
Tolerance 70⁰C
-
44.3
+ / -3mmWC / 1%
+ / -5mmWC / 1.7%
75
42.16
+ / -3mmWC / 1%
+ / -5mmWC / 1.7%
150
40.0
+ / -6mmWC / 2%
+ / -8mmWC / 2.7%
225
37.77
+ / -9mmWC / 3%
+ / -11mmWC / 3.7%
1
2
17/60

3.11. Turbidity sensor (High power sensor)
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.
By 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.
The light is collected by a new technology and
guides the light into the measurement zone.
- Use of larger LEDs
•the light area increases from 3 to 20sqmm
•small dirt pieces cannot block the light
beam anymore
- LEDs are located in a colder area
- less temperature fluctuations around
the LED’s
- higher precision during measurement
- improved signal stability
- measurement during higher pump speed
is possible.
OLD
NEW
1- Dirt pieces 2- Temperature between 15-70°C in
water
3-
Constant 23°C measured, because
LEDs are outside the hot water area
4-
The temperature sensitive electronical
components are out of the water
zone, where the temperature is colder
and more constant
1
2
3
4
18/60

3.12. Automatic Cycle: AutoSense
Comparison Auto 45-70 vs AutoSense 45-70
The AutoSense software
–Washes the dishes and detaches the dirt continuously
–In this way the turbidity sensor can detect the degree of
dirtiness
–And will define, if additional rinses are necessary.
–The measurements will be done continuously during the
cycle.
Temperature, water consumption and duration is adjusted to the
degree of dirtiness.
90 … 160min
40 … 150min
0.9 … 1.6kWh
8 … 15 l
7 … 14 l
0.6 … 1.4kWh
19/60

3.13. Global Dispenser
Details
The dispenser have the following main features:
•Low voltage driving - 5VDC => Safety improvement
•Multiple dosage => Performance/Quality improvement
•Sliding lid => Performance/Quality
improvement
It’s present on dishwashers with “Thin inner door”.
Assembly process as today. It is screwed in to door cut out in
an automated line.
1-
Multi dosage -> No knob
2-
Sliding door. Improved
access to wash
compartment and no
interaction with basket.
3-
Rinse aid level detection
variants
- Optical (Shown on picture)
- Electrical (For signal to MB)
4-
Activation button on side
1
2
3
4
20/60