Blomberg TKF 8439, Service Handbook

Page: 8 / 38

Arçelik/Blomberg 2009 ARES MLCD 8 kg
Tumble Dryer Service Handbook
8
Heater (Open spiral wire):
A 2500W two circuit open spiral wire type heater is driven by the 2 relays. A manual resettable
thermostat is used on these heater, in order to provide IEC safety rules accordingly. This
manual resettable thermostat cut the heater power at 160°C and can be resetted by the
pressing the button on thermostat, so heater can be used after a failure bacause of thermostat
is open curcuit.
The second temperature regulating element on the heater is NTC. When the desired
temperatures is reached, electronic control card reads the resistance of NTC and if the
prescribed resistance ( and hnce temperature) is reached, the heater is switched off.
This mechanical thermostat operates only;
Locked tumble,
Locked rotor,
Broken fan,
Filter and condenser is full, conditions.
Warning: When NTC is broken down, the heater is changed by the new heater. If
thermostat is open curcuit, the same heater will be used by pressing the button on
thermostat.
Door Lock :
Locking and unlocking mechanism of the door lock used in the dryer is a mechanical type of the
door lock. When the door pushed, the door is locked and the door is closed. When the pull from
the handle of the door, it will be open with a suitable force.
Especially, door lock and hinge sould be checked if there is a locking problem.
Door Switch :
The current is sent to electronic card and motor by the door switch. By this way when door is
opened due to any reason, motor stops automaticlly. However because of EN&IEC safety rules,
when the door is closed again, motor does not start. It is necessary to press start/pause/cancel
button to restart dryer.