22
9.2 Motor
electronics
Starting current limitation
Electronically controlled continual running se-
cures device acceleration without back thrust.
Due to starting current limitation in the device,
16A protection is suffi cient.
WARNING
Devices without starting current limitation
need higher protection – at least 16A circuit
breaker.
Speed control
You can regulate the speed steplessly within the
speed range using the adjusting wheel
[1-15]
(see
Technical data). This enables you to optimise the
speed to suit the respective material. Please also
note the specifi cations on the tools.
Switching off during back thrust
During sudden drop of revolutions, for example
blocking in dividing cut, the current input in mo-
tor stops. For re-starting, the device must be fi rst
switched off and again switched on.
Protection against re-starting
Prevent uncontrolled starting of the device after
current supply cut off. For re-starting, the device
must be fi rst switched off and again switched on.
Constant speed
The preselected motor speed remains constant
through electronic control to ensure a uniform
cutting speed even when under load.
Protection from overloading dependant on tem-
perature
The safety electronics switches to cooling regime
when the critical temperature is reached. Motor
continues running at approximately 50 % revolu-
tions, constant electronics is deactivated.
After cooling to approximately 10 – 20 s, the device
is fully operational.
Heat protection for devices heated during opera-
tion, reacts adequately sooner.
9.3 Turning the gear box
For special cases, the gearbox can be turned in
steps of 90°. This achieves a better handling posi-
tion of the switch.
For such work, we recommend to use the Festool
service.
Remove four screws.
Carefully, turn the gearbox into required posi-
tion. Make sure the gearbox does not separate
from motor box by more than approximately
1 mm.
Insert and fasten the four screws -fi gure
[8]
.
9.4 Aperture
cover
If you wish to see the cutting area, take off the
aperture cover
[2-3]
.
Only handle this cover when
the disc is not running.
Be careful about spattering dust particles.
10 Service and maintenance
WARNING
Risk of accident, electric shock
Always pull the plug out of the socket before
performing any type of work on the machine.
All maintenance and repair work which re-
quires the motor housing to be opened, must
only be carried out by an authorised service
workshop.
- Wrapped electric tools can be stored in a dry
place without heating, with temperatures not
lower than –5°C. Unwrapped electric tools can
only be stored in dry places with temperatures
not lower than +5°C, without sudden changes
in the temperature.
-
To ensure the airfl ow is suffi cient, cooling
openings of the motor must be always clean
and free.
-
The machine is equipped with special self-
disconnecting brushes. When the brushes are
worn, the power supply is automatically discon-
nected, and the machine is stopped.
-
If the suction fl ange height adjustment system
does not operate smoothly, the fl ange must be
removed and cleaned.
Customer service and repair. Only through
manufacturer or service workshops:
Please fi nd the nearest address at: www.
festool.com/service
EKAT
1
2
3
5
4
Use only original Festool spare parts! Or-
der No. at:
www.festool.com/service
