Electronics; The Mitre Fence - Festool PRECISIO Serie Instrucciones De Servicio

7

Electronics

The saw has an electronic system with the following
functions:
7.1 Soft start
The electronically-controlled soft start ensures that
the tool starts without jerking - no starting current
rushes.
7.2 Speed control (only CS 70 EB)
The speed of the saw blade can be infinitely
adjusted at the adjusting wheel (2.1) between 2,000
rpm (position 1) and 4,200 rpm (position 6),
corresponding to the following saw blade speeds:
Position 1 2,000 rpm
Position 2 2,400 rpm
Position 3 2,800 rpm
7.3 Overload protection (current protection)
In cases of extreme overload (rip cutting, use of blunt
saw blades) the power consumption may
considerably exceed the permissible rated value.
In this case the motor is switched of by an
“electronic safety clutch” and re-starts as soon as
the load is removed.
7.4 Overload protection - temperature
protection
Extreme overload in continuous operation causes
the motor to heat up. An electronic temperature
monitoring device is fitted to prevent overheating
(motor burn-out).
The electronic safety device switches the motor off
before the motor is able to reach a critical
temperature. After a cooling period of approx. 3-5
minutes the machine is once again ready for
operation and can run at full load.
The cooling period can be greatly reduced if the
machine is running (idling or recovery speed).
7.5 Quick-acting brake system (only
CS 70 EB)
When the OFF button is pressed the electronics
start a braking process which brings the saw blade
to a standstill within 3 seconds.
8 Adjusting
8.1 Adjusting the depth of cut
As already described in sections 3 and 4.1, the saw
is locked in its foremost position (setting-up
position). The depth of cut can be infinitely adjusted
from 0-70 mm by turning the crank (1.6). A clean
saw cut is obtained when the pre-set depth of cut
is 2-5 mm larger than the thickness of the
workpiece.
Position 4 3,300 rpm
Position 5 3,800 rpm
Position 6 4,200 rpm
8.2 Adjusting angle cuts
Ÿ Lock the saw in its setting-up position (foremost
position). Release the clamp (2.4) so that the saw
can be pivoted with the rotary knob (2.3) from 0-
45° according to the scale (2.5).
Ÿ Visible edges must match cleanly during exact
fitting work. These joining edges can be slightly
undercut to obtain this effect. Press button (2.2)
down to release the stops at the 0 and 45°
positions and the saw can be pivoted by a
further 2°.
Ÿ The 0 and 45° stops are once again effective when
the button (2.2) is released.
Ÿ Retighten the rotary knob (2.4) after setting the
desired angle.
9

The mitre fence

A correctly adjusted stop is an important pre-
condition for safe working with saws.
The enclosed mitre fence can be fitted at any
position on the peripheral clamping lip on the saw
table and can be used as a cross fence and linear
stop for all sawing work thanks to its versatility.
Make sure that the fitting surfaces are not dirty
before fitting the mitre fence since otherwise a
correct angle cannot be ensured.
Use as cross fence (fig. 1) .
Use as a linear stop (fig. 6).
The following adjustments are possible at the mitre
fence:
9.1 Fastening to the saw table
Ÿ Open the clamping jaws with the grip handle (4.4)
via a system of levers.
Ÿ Place the guide rail (4.5) from above on the
peripheral clamping lip.
Ÿ Clamp clamping segment with grip handle.
9.2 Moving fence on clamping segment.
Release rotary knob (1.5), move fence on clamping
segment and tighten in place.
9.3 Moving the fence ruler
Release rotary knob (4.1), move fence ruler
accordingly and tighten in place.
9.4 Angle adjustment
Ÿ The guide face can be pivoted by a max. of 180°
Ÿ Release rotary knob (4.2) and raise locking pin
(4.3). The common angle adjustments can be
locked with the locking pin (4.3). Retighten rotary
knob (4.2) after setting the desired angle.
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