Asko DW70.1 Manuale utente
SERVICE MANUAL
DISHWASHERS
DW70.1,DW70.3,
DW70.4, DW70.5
2
3
Contents
1. Introduction ................................................................................................................4
1.1 Models ................................................................................................................5
2. Technical data ............................................................................................................6
2.1 Technical information .......................................................................................6
3. Installation ..................................................................................................................7
4. Component information ............................................................................................9
4.1 Components and measurement values ..........................................................9
4.2 Components and function description ........................................................11
5. Programs and control unit ......................................................................................14
5.1 Programs..........................................................................................................14
5.2 Time display.....................................................................................................15
5.3 Programs and options ....................................................................................15
5.4 Wiring diagram and timer diagram................................................................17
5.5 Program flow description...............................................................................18
5.6 Settings ............................................................................................................19
5.7 Service menu ...................................................................................................24
6. Troubleshooting.......................................................................................................27
6.1 Dishwashing results ......................................................................................27
6.2 Most common faults........................................................................................27
6.3 Water level .......................................................................................................28
6.4 Fault indications..............................................................................................29
7. Tools..........................................................................................................................31
7.1 Tools .................................................................................................................31
7.2 Special tools ....................................................................................................31
4
INTRODUCTION
1. Introduction
You are holding ASKO’s service manual for the DW70 generation of dishwashers.
The DW70 dishwasher series is available in four different basic models, designated DW70.1, DW70.3,
DW70.4 and DW70.5. On the next page, we present the various panels found on each type, making it
easy to identify the different machines. The different models are named differently in different mar-
kets. The type designation is most important when identifying a particular machine model.
The type plate can be found on the right of the inside of the door.
The first two digits specify the year of manufacture
while the third and fourth digits specify the week of
manufacture.
It should be easy to service a dishwasher. It is important that you, as a service technician, are afforded
conditions that enable you to work in an efficient and satisfactory way. Our hope is that this service
manual will prove a useful tool in your daily work.
Asko Appliances/After Sales
Box 344
SE-532 24 Skara
Sweden
Type designation Article number
Serial number
Year Week
5
DW70.3
The DW70.3 is available in two versions – with three and five options respectively. The machine has six
set programs and the controls are on the top..
DW70.4
The DW70.4 has a number of different options. The machine has 14 set programs. The controls are on
the top and the display (LCD) is on the top of the panel.
1.1 Models
DW70.1
The DW70.1 is available in two versions, with either one or two options. The machine has four set pro-
grams
The DW70.3 and DW70.4 models are used in both fully integrated and standard models. Other control
units are only used in standard models.
INTRODUCTION
DW70.5
The DW70.5 is available in two versions – with three and five options respectively. The machine has
five set programs and the controls and display are at the front.
6
2.1 Technical information
Height: 823-870 mm = for 820 mm machines (XL)
863-910 mm = for 860 mm machines (XXL)
Width: 596 mm
Depth: 570 mm
Weight: 42 kg / 45 kg with water softener
Water pressure: 0.03–0.2 MPa (0.3–2.0 kp/cm2)
Connection: 1-phase, 230 V, 50 Hz, 10 A**
Max. rated power: 1700 W**
* According to EN 50242 standard.
** See type plate.
2. Technical data
TECHNICAL DATA
7
3. Installation
Suggested machine installations
The dishwasher can be installed built-in,
completely freestanding or partially free-
standing.
CAUTION!
Connections to electricity, water and drain-
age must be performed by qualified profes-
sionals.
A. Built-in
The dishwasher can be installed under a
worktop and integrated with the kitchen
cupboards. Read the instructions in the user
manual and the installation instructions for
the actual machine type.
B. Freestanding
A freestanding machine must be fitted with an
anti-tilt device. This comprises two brackets,
which are screwed into place as illustrated in
figure 1. An alternative to the anti-tilt device
is a counterweight that is fixed directly to the
back of the machine.
Push in the machine so that the rear feet slide
into the mounting brackets. Now the machine
will not tip over if a load is placed on the
door when open. If the machine is installed
completely freestanding, side panels and a
worktop should be fitted. These accessories
can be purchased where you bought the
dishwasher.
C. Partially freestanding
If you install the machine so that either side is
visible, you can fit a side panel.
D. Machines with wooden door
Stronger door springs are available for pur-
chase for machines with a fitted wooden
door. Springs are available for various
weights and sizes of wooden door. Door
springs can be purchased where you bought
the dishwasher. Follow the instructions in
the installation manual for fitting the wooden
door.
Figure 1. Anti-tilt brackets used for
freestanding installation
455-475
600
413
CAUTION!
A completely freestanding machine must be fit-
ted with an anti-tilt device/counterweight.
INSTALLATION
8
Connection to water supply
The supply pipe must be fitted with a stop-
cock. The stopcock should be positioned
above the sink unit or at the front of the sink
unit cabinet.
The inlet pipe has a coupling with either a 1/2”
or a 3/4” internal thread, depending on the
country.
Once the machine in installed: Open the stop-
cock to flush the pipe. Check that all connec-
tions are watertight.
Electrical connection
Machines fitted with a cable and plug must be
connected to an earthed socket.
Technical data
See the type plate on the right-hand side of
the door.
CAUTION!
The power cable must be disconnected or the
power to the socket turned off when work is
carried out!
Drainage connection
• The drainage hose connects to a connec-
tion nipple on the sink unit’s water trap (see
illustration below). Note that the hose must
be attached at the same height as the un-
derneath of the sink unit otherwise dishwater
from the sink may run down into the dish-
washer (see illustration).
• The drainage hose connects to a connection
pipe on the sink unit’s water trap. It must have
an internal diameter of at least 16 mm.
• The drainage hose may be extended to a maxi-
mum of 3 m. Any connections and connecting
pipes must have an internal diameter of at least
16 mm.
• No part of the drainage hose may be more
than 950 mm above floor level.
The hose must not be routed directly to the
floor drain or similar. In such cases, the hose can
act as a siphon and empty the machine.
The hose must always discharge at least 350
mm above floor level.
• Attach the hose holder.
(Min. 350 mm and max. 950 mm above floor
level.
Figure 3.
Hose holder
Max 950 mm
Min 350 mm
INSTALLATION
9
4.Component description
4.1 Components and measurement values
The specified resistance values apply at room temperature (about 20°C/68°F)
Values within ±10% are considered normal.
COMPONENT DESCRIPTION
Article no. Position Component
8073779 EMC filter 680 kohm
8073780,81 EMC filter 1 Mohm
8079504 Heating element 1600 W
230 V
32 ohm
8079505 Heating element 1200 W
120 V
12 ohm
8078096 Thermistor 60 kohm
8073801,02 Combi disp. 230 V 1.6 kohm
8073803,04 Combi disp. 120 V 0.3 kohm
8078080
8078080
Circ. pump 220/240 V 50
Hz
Primary winding 115 ohm
Circ..pump 220-240 V 50
Hz
Auxiliary winding 260 ohm
8078082
8078082
Circ..pump 120 V 60 Hz Primary winding 31,4 ohm
Circ..pump 120 V 60 Hz Auxiliary winding 76 ohm
8078081
8078081
Circ. pump 220-240 V
60 Hz
Primary winding 78 ohm
Circ. pump 220-240 V
60 Hz
Auxiliary winding 152 ohm
8078087 Drainagepump200/240V
50 Hz, 16 l/min
148 ohm
8078088 Drainagepump 200/220V
60 Hz, 16 l/min
85 ohm
8078089 Drainage pump 120V 60
Hz, 16 l/min
26 ohm
8078084 2-3 Spray arm diverter 230 V
50/60 Hz
8.5 kohm
8078085 2-3 Spray arm diverter 120 V
60 Hz
2.6 kohm
8079502 Inlet valve single 200/240
V, 4 l/min
3.9 kohm
8079503 Inlet valve single 120 V,
4 l/min
0.95 kohm
8079500 Inlet valve fuse 220/240
V, 4 l/min
2 kohm
8079501 Inlet valve fuse 120 V, 4
l/min
0.5 kohm
10
COMPONENT INFORMATION
Flow meter
The flow meter is fitted in the air gap. The
flow meter is used to control the water intake
so that the right volume is taken in regard-
less of the water pressure. It is even possible
to program the machine for time-controlled
water intake.
The flow meter comprises an impeller with two
magnets that is driven by the water flow. On the
outside, on the flow meter housing, is a sensor,
a reed switch, which closes each time the mag-
nets pass. The number of pulses from the sensor
is proportional to the volume of the flowing
water. A minimum water flow of 2 litres/minute
is required for the flow meter to operate. If
the necessary level is not reached within one
minute, the program stops.
Output signal: 220 pulses per litre.
Circulation pump
The circulation pump comprises an asynchro-
nous motor, with a pump component and a
condenser.
Spray arm diverter
Certain machines are fitted with a spray arm
diverter. The spray arm diverter comprises a
synchronous motor that drives a disc valve
via a gearbox. The disc distributes different
4.2Componentsandfunctiondescription
Here we present the functions and specifica-
tions of the various electrical components.
Some components are only found in high-end
machines or in particular markets.
Inlet valve
Both single and safety inlet valves are used.
The valve contains a filter to stop particles then
a flow limiter to limit the flow to a maximum of
4 l/min. The valve opens when the water pres-
sure exceeds 0.3 bar and provides full flow at
about 2 bar.
Safety valve
The safety valve has two independent valve
seats, each controlled by a separate elec-
tromagnet. The valve seats are connected
in series. This doubles the safety factor. The
electromagnets are also connected in series
(electrically), which means each magnet’s
rated voltage is half the mains voltage (e.g., a
230 V valve = 2 x 115 V coils)
Single valve
The single valve comprises an electromagnet
and a valve seat.
Article no. Position Component
8078090*
8078090 *
Softener salt water
valve 220/240 V
3 kohm
Softener mixer valve
220/240 V
2.33 kohm
8078302*
8078302*
Softener salt water
valve 120 V
0.65 kohm
Softener mixer valve
120 V
0.65 kohm
8073830 Halogen bulb 5 W/12 V <10 kohm
8052778 Vax motor 1.1 kohm
8073850 Fan motor 230 V 0,44 kohm
8073848 Fan motor 120 V 0.18 kohm
* The number is for a complete water softener; replacement salt and mixer valves are not
available separately.
Questo manuale è adatto per i seguenti modelli
3
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