Asko TD70.C User manual

Service Manual
Tumble Dryer - TD70.C

Updates..................................................................................................................................................................................................................................................3
Introduction .........................................................................................................................................................................................................................................4
Troubleshooting strategy..............................................................................................................................................................................................................5
Product overview.............................................................................................................................................................................................................................7
Technical data......................................................................................................................................................................................................................................8
Component descriptions .............................................................................................................................................................................................................9
Components and measurement values .........................................................................................................................................................................9
Components and function description........................................................................................................................................................................10
Control unit ......................................................................................................................................................................................................................................14
Circuit diagram TD70.C ....................................................................................................................................................................................................... 14
Circuit diagram TD70.C Marin ......................................................................................................................................................................................... 16
Circuit diagram TD70.C UL ...............................................................................................................................................................................................18
Circuit diagram TD70.C HWC........................................................................................................................................................................................ 20
Circuit diagram TD70.C HP............................................................................................................................................................................................... 22
Troubleshooting.............................................................................................................................................................................................................................. 24
Fault indicators ..........................................................................................................................................................................................................................24
Service menu ................................................................................................................................................................................................................................... 25
Service menu.............................................................................................................................................................................................................................. 25
Service and installation
Replacing the panel and the control unit ..................................................................................................................................................................29
Transporting a tumble dryer with a heat pump .................................................................................................................................................... 31
Tumble Dryer TD70.C
Service Manual
Contents

Updates
Rev Date Description Initials
01 2011-09-06 First version FH
Service Manual TD70.C
4

Introduction
You are holding the Service manual for the TD70 tumble dryer. The TD70 tumble dryers is
available in several models, designated TD70.1, TD70.2, TD70.3. The TD70.C model, that this
guide is focusing on, is designed for professional use.
It should be easy to service a tumble dryer. It is important that you, as a service technician, are
provided the necessary conditions to work in an efficient and satisfactory manner. Our hope is
that this Service manual is a useful tool for your daily work.
Asko Appliances AB
SE-534 82 Vara
Sweden
The type designation can be found on the machine plate, which is located on the inside of the
front panel by the door catch (see image below).
TYPE TD70.C
Type designation Product number
Serial number
Year Week
OPERATING INSTRUCTIONS
Always have the operating instructions for the machine available during service
Service Manual TD70.C
5

Troubleshooting strategy
Troubleshooting is an important part of the service callout, and as such we have drawn up a
troubleshooting strategy that describes, in broad terms and step by step, what you need to do to
find and diagnose faults arising in our machines.
• Ask the customer to describe the problem.
• Check whether the customer’s description matches the reported fault.
• Check that the machine is correctly installed:
- Electrical connection - Drainage
- Water connection - Machine correctly levelled
Fault found?
Incorrect installation or external factors that affect performance and functionality (for
example, water pressure, electrical supply, drainage).
The machine operates normally. No deviations can be found. The customer probably needs
to be informed about proper use of the machine. If necessary, also inform the customer about
the guarantee conditions and the fact that the customer will be charged for the callout.
Yes
Open the service menu:
1. Check the settings
2. Run a test cycle
3. Note any fault codes
If the above actions do not uncover the fault:
• Conduct general troubleshooting. Use the documentation available at ServiceSaver
(service manuals, service memos, circuit diagrams and other documents).
Yes
No
Fault found?
No
Fault diagnosed?
Repair and check function/
safety.
Contact technical support
for assistance.
Carry out the actions
suggested by technical
support.
Satisfied customer!
OK?
No
Yes
No
Yes
Service Manual TD70.C
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Product overview
TD70.C
Programmes: A total of 7 programmes.
Settings: 4 settings (Language, Child-safe, Buzzer, Heater 2)
S3
J1 DISPLAY
S2
S1
Knob and button descriptions
Turn/Push Description
Programme selector (J1)
Turn clockwise or anti-clockwise to cycle through the different
programmes and options in the various menus.
Start button (S2)
• Starta programme
Stop button (S3)
• Stop programme (press and hold for 3 seconds).
Auto extratorrt
Auto skåptorrt
Tidsprogram
Auto normaltorrt
Auto stryktorrt
Luftningsprogram
T753C BUTTERFLY DRYING
Auto extratorrt
Auto skåptorrt
Tidsprogram
Auto normaltorrt
Auto stryktorrt
Luftningsprogram
T753C BUTTERFLY DRYING
Display description
Auto normal dry
Programme name Estimated remaining timeLow temperature
Service Manual TD70.C
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Technical information
Height 850 mm
Width 595 mm
Depth 585 mm
Weight 43 kg (Vented)
47 kg (Condenser)
55 kg (Heat pump)
44 kg (Heating Water Circuit)
Cylinder volume 112 litres
Capacity EU 7.0 kg
US/AU 7.0 kg
Speed 50-55 rpm
Connection 1-phase 230 V, 50/60 Hz, (10 A/16 A) **
3-phase 400 V, 50/60 Hz, (10 A) **
Rated power 1950 W = 10 A** (Vented/Condenser)
3000 W = 16 A** (Vented)
2500 W = 16 A** (Condenser)
1300 W = 10 A** (Heat pump)
1950 W = 10 A** (Heating Water Circuit)
The control buttons are used to switch between 10 A and 16 A via the software. Does not apply to
Heat Pump or Heating Water Circuit.
Drum material Stainless steel
Outer panels Powder-coated and hot-galvanised sheet steel or stainless steel
Installation Stacked or freestanding
Protection class IP X4
** See type plate.
Technical data
Energy consumption and programme times
See the operating instructions for information on energy consumption and programme times.
Service Manual TD70.C
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Component description
Components and measurement values
The specified resistance values apply at room temperature (about 20°C/68°F). Values within
±10% are considered normal.
Article no. Component Measurement value Comment
80 839 15 Motor 50 Hz,
220/240 V
Winding resistance:
cable colour red-white 26.5 Ω
cable colour red-blue 53.5 Ω
cable colour white-blue 27.0 Ω
Current: 0.7 A; 140 W; 2850 rpm
80 839 16 Motor 60 Hz,
220/240 V
Winding resistance:
cable colour red-white 26.5 Ω
cable colour red-blue 53.5 Ω
cable colour white-blue 27.0 Ω
Current: 0.7 A; 140 W; 3300 rpm
The motor is a 2-pin motor and is directly
connected to the fan for internal air and the
gearing for driving the cylinder. On condenser
dryers, the motor also drives the fan for external
air.
80 903 13 Capacitor 8 μF 50 Hz
80 903 14 Capacitor 6 μF 60 Hz
80 902 70 Capacitor heat pump 17 μF 50 Hz
80 902 71 Capacitor heat pump 60 Hz
80 821 28 Condensate pump 50 Hz
80 846 48 Condensate pump 60 Hz
80 762 02 EMC-filter with inductor The filter eliminates interference to and from the
machine.
80 833 44 Thermistor 4.8 kΩ(at 25°C) The thermistor controls temperature regulation. If
the thermistor is short-circuited or detaches from
the control unit, the programme is stopped.
80 773 85 Thermostat 150 150°C automatic The thermostat/overheating cut-out stops the
programme if the temperature becomes too high.
80 792 00 Thermostat 135 135°C automatic
80 902 24 Thermostat 110 110°C automatic
80 761 04 Door switch The front door triggers a door switch which stops
the programme when the door is open. If the door
has been opened and closed during the programme
the machine must be restarted using the Start/Stop
button.
80 761 03 Microswitch float
Overflow guard
If both containers in the tumble dryer are full the
programme is stopped by a float switch installed
in the lower container. “Over flow” is indicated
on the display.
Electrical connection Condenser 1950W/10A-2500W/16A
Vented 1950W/10A-3000W/16A
Heat pump 1300W/10A
Heating Water Circuit 1950W/10A
The machine is delivered as single phase and can
be switched between 10 A and 16 A. The control
buttons are used to make the switch via the software.
Does not apply to Heat Pump or Heating Water
Circuit.
80 824 92 Heating element 1950 W Heater 1: 1950 W, 24.5 Ω
80 915 90 Heating element 2500 W Heater 1: 1950 W, 24.5 Ω
Heater 2: 550 W, 91.4 Ω
80 824 91 Heating element 3000 W Heater 1: 1950 W, 24.5 Ω
Heater 2: 1050 W, 45.5 Ω
80 824 60 Heating element 3000 W Heater 1: 1950 W, 90.2 Ω
Heater 2: 1050 W, 167.6 Ω
Marine 440 V
80 824 61 Heating element 3000 W Heater 1: 1950 W, 24,5 Ω
Heater 2: 1050 W, 45,5 Ω
3-Phase
80 916 18 Heating element 2500 W Heater 1: 1950 W, 24,5 Ω
Heater 2: 550 W, 91,4 Ω
3-Phase
80 821 30 Cooling fan compressor heat
pump
637 Ω
80 821 22 Base heat pump complete 50 Hz
80 821 23 Base heat pump complete 60 Hz
80 88 415 Reversing valve 1.9 kΩ
80 841 00 Steam generator 68 Ω
Thermistor 61.4 kΩ
Steam pump 2.15 MΩ
Supplied with steam pump
80 902 22 Reed switch steam tank
80 889 37 Control unit compl. TD70.C The control unit contains microprocessors for
controlling programmes, the motor, the heating
elements etc.
80 846 49 LED-light compl. LED-technology for the machine’s internal light.
Service Manual TD70.C
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Component description
Components and function description
Here we describe the function and
specification of the most important
components. Certain components are found
only in more highly specified machines or in
particular markets. See the Troubleshooting
chapter for fault and information codes.
CU (Control Unit)
The CU (Control Unit) functions as both a
control panel and a logic component. The
control panel is equipped with knobs/buttons
for selecting programmes, Start/Stop buttons
and a display. It is an integrated part of the
CU and cannot be replaced separately. The
logic component manages functions needed
for drying programmes and diagnosis. The
CU has an internal power supply for the logic
component. In the event of a fault, the CU
can diagnose a number of components and
functions, and a total of 4 fault codes can be
displayed. To facilitate troubleshooting there
is a component testing function in which the
outputs are activated according to a special
sequence.
Power supply
Mains voltage, built-in internal voltage
converter for the logic component.
Thermistors
The thermistors are of the NTC type (Negative
Temperature Coefficient), which means their
resistance decreases as temperature increases.
Thermistor 1 is in the air duct on the front frame,
after the internal impeller. If there is an interruption
in the thermistor circuit or if it short circuits, the
drying programme stops and the display shows
“Thermistor fault”.
Purpose: Measures the temperature of the air that
has passed the load and controls the drying process
and the heating element.
Thermistor 2 is only used for condenser dryers and is
located after the condenser.
Purpose: Measures the temperature of the
dehumidified air, the value of which is used as a
parameter in the drying process.
Resistance values for thermistors 1 and 2
Temperature Resistance
20°C 5989
25°C 4869
30°C 3946
35°C 3197
40°C 2598
45°C 2126
50°C 1758
55°C 1471
60°C 1240
65°C 1043
70°C 857
Tolerance: ±1%
Personal notes
Service Manual TD70.C
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