Festool ROTEX RO 90 DX FEQ Installation Manual - Original Instructions page 10

English
8.1 Electronics
The machine features full-wave phase control
electronics with the following features:
Smooth start-up
The electronically controlled smooth start-up
ensures that the machine starts up jolt-free.
Speed control
You can regulate the speed steplessly with the
adjusting wheel [1-6] in the speed range (see ).
This enables you to optimise the cutting speed
to suit the surface (see table).
Constant speed
The preselected motor speed is maintained on
a constant level. Electronic controls ensure a
steady cutting speed even when operating un­
der different loads.
Temperature cut-out
The machine power supply is limited and the
speed reduced if the motor exceeds a certain
temperature. The machine continues operating
at reduced power to allow the ventilator to cool
the motor quickly. If the machine temperature
exceeds the maximum permitted value for lon­
ger periods, the machine switches off com­
pletely after approx. 40 seconds and can only be
switched on again once the motor has cooled
sufficiently.
8.2 Setting sanding motion [3]
The change-over switch [1-2] can be used to
set three different sanding motions.
This change-over can only be carried
out with the sanding pad stationary
because the switch is locked during
operation.
Coarse sanding, polishing - ROTEX rotary mo­
tion
The Rotex rotary motion is a combi­
nation of rotary and eccentric mo­
tions. This position is selected for
sanding with high output (coarse
sanding) and polishing.
10
+
Fine sanding - eccentric motion
This position is selected for sanding
with low output for a scratch-free
surface (fine sanding).
Triangular sanding and pad change [4]
This position is used for sanding with
the delta sanding pad and slat sand­
ing pad; the rotary motion is blocked.
You can change the sanding pad in
this position.
The stop rod [1-8] blocks the installa­
tion of the sanding pad in the change-
over switch positions ROTEX rotary
motion and eccentric motion.
3
8.3 Changing sanding/polishing pad [5]
Only use sanding and polishing pads
that are suitable for the maximum
speed specified.
Tuned to the surface being processed, the ma­
chine can be equipped with two sanding pads of
different hardnesses.
Hard: Coarse and fine sanding on surfaces.
Sanding edges.
Soft: Universal for coarse and fine sanding, for
flat and convex surfaces.
When the interface pad [1-12] is fitted on the
sanding pad, strength is reduced = extra soft.
► Following the sanding pad change, switch
the change-over switch [1-2] to the desired
sanding motion.