Festool AP 85 - Manual (Page 11)

11
Smooth run-up
The electronically-controlled smooth run-up en-
sures jolt-free starting of the machine and requires
a smaller starting current (a lower amp fuse is also
necessary).
No-load speed
The electronic circuitry limits the no-load speed to
the maximum working speed of 3,800 rpm. This
means that the saw runs very quietly under no-load
conditions, reducing wear and tear on the gearbox
and motor.
Speed control
The speed control (1.4) allows the saw blade speed
to be steplessly adjusted between 1,800 rpm (posi-
tion 1) and 3,800 rpm (position 6).
The fi gures on the speed regulator correspond ap-
proximately to the r.p.m. settings for the sawblade.
1 1,800 r.p.m. 4 3,000 r.p.m.
2 2,200 r.p.m. 5 3,400 r.p.m.
3 2,600 r.p.m. 6 3,800 r.p.m.
Constant speed
The preselected motor speed is kept constant by
electronic means. This ensures a constant cutting
speed, even under load.
Overload protection
Under extreme overload (rip cutting, cutting with
blunt saw blades), the current consumption may
considerably exceed the permissible nominal
value. In this case, electronic overload protection
prevents the motor from burning out. The motor is
switched off by an “electronic safety clutch” and re-
starts as soon as the overload is removed.
Temperature protection
Extreme overload in continuous running will cause
the motor to overheat. An electronic temperature
monitoring device is fi tted to provide protection
against overheating (burning-out of the motor).
The electronic safety device switches off the mo-
tor before a critical motor temperature is reached.
After a cooling period of approx. 3 – 5 minutes, the
machine is once again ready for use at full load.
If the machine is kept running (idling), the cooling
period is reduced considerably.
LED indicators
The green LED (1.6) shows the operator that the
machine is running.
The red LED (1.5) indicates that the motor is over-
loaded to approx. 70 %.
If the motor is subject to an overload of this kind for
a lengthy period, it will be switched off by the over-
load protection device.
Our recommendation:
If the red LED lights, reduce the feed force until
this red LED goes out again. The machine is then
operating in the permissible overload range.
Fast Safety Brake System (AP 85 EB)
When the switch is released (motor is switched off)
the electronic circuitry triggers a braking system
which brings the saw blade to a standstill in ap-
prox. 2 seconds.
5 Adjustment of the circular saw
The portable circular hand saws allow you to carry
out most sawing operations according to the fol-
lowing adjustments.
a) Adjusting the cutting depth
The cutting depth can be adjusted steplessly
from 0 – 85 mm: unscrew the lever (3.9), set
the desired cutting depth by means of the scale
(3.3) and cutting-depth mark (3.2) and re-tighten
the lever (3.9).
The neatest saw cut is obtained by calculating
the cutting depth according to the following for-
mula: thickness of workpiece + 2 – 5 mm = cut-
ting depth.
b) Adjustment of angle cuts
Loosen the set screw (2.10 and 1.11).
Adjust to the required degree of angle between
0° and 45° on the scale (3.7) and the markings
(3.8). Tighten the set screw.
The pivot point of the circular hand saws lies at
the point of intersection of the contact level of
the guide rail (5.1) and the cutting edge (5.2).
The end positions at 0° and 45° are adjustable
and are set in the factory.
The 45° end position can be readjusted by
means of the two Allen bolts (2.12) and the 0°
end position can be readjusted by means of the
2 screws (3.12).
c) Cutting indicator
The cut of the saw blade can be seen on the cut-
ting edge (1.12) on the front of the saw table.
6 Sawing with the AP 85 EB/AP 85 E/AP 85
a) Changing the saw blade
Disconnect the mains plug from the socket!
Unlock the spindle stop knob (3.1) and press it
downward. Use an Allen key (3.10) to unscrew
and remove the Allen bolt (2.4). Remove the
clamping fl ange (2.5) and swivel back the anti-
kick device (2.7). The saw blade can now be
replaced easily. Note the following two points
when fi tting a saw blade:
– that the directions of the saw blade and motor
correspond. The marks on the metal guard
(2.2) and saw blade (2.6) are for this pur-
pose.
– that the areas of the gripping surface around
the fl ange and on the saw blade are clean in
order to ensure optimum operation.