► The tool head must not vibrate or be unbal-
anced; otherwise it has to be replaced.
► Only use original PROTOOL tool heads.
7.3 Inserting tool head
Select the suitable tool head on the basis
of the usage and area of application (see
Application table).
Place the grinder on a fl at, fi rm base (e.g.
work bench).
Insert pin [2-1] through the opening in the
socket wrench [2-2] and unscrew clamping
nut [2-3].
Mount tool head [2-4] on the spindle. Make
sure the position of the spring [2-6] is cor-
rect; it must not slip out.
Press in spindle locking button [1-9]. The
locking button must only be pressed in with
the spindle at a standstill and the grinder
switched off. Turn the spindle until the lock-
ing button engages. Fully tighten clamping
nut [2-3] with the socket wrench [2-2].
CAUTION
Turn the tool head by hand to check the
true running. Ensure that all screws
are correctly tightened. Never leave
a tool wrench inserted.
7.4 Removing tool head
CAUTION
The tool head can become very hot
during the work process. Allow the
tool head to cool down before replac-
ing it.
Press in spindle locking button [1-9]. The
locking button must only be pressed in with
the spindle at a standstill and the grinder
switched off. Turn the spindle until the lock-
ing button engages. Unscrew clamping nut
with socket wrench.
Mount extractor [3-1] and release tool head
by turning hand screw clockwise. As soon
as the tool head is released, it can be re-
moved.
7.5 Adjusting material removal
depth
Release the locking screw on the suction
hood [1-8]. The grinding depth, or mate-
22
rial removal dimension, can be adjusted by
turning the material removal adjustment
lever [1-11] between 0 and 10 mm.
Turning to left = higher grinding depth
Turning to right = lower grinding depth
The setting for the grinding depth depends
on the material to be processed and the
tool used.
7.6 Changing tools
WARNING
Before any repair work to the grinder,
always pull the mains plug out of the
socket!
Changing grinding wheels
Reduced material removal quality is caused
by tool wear. The cutter heads are provided
with change wheels, which permit cutter
heads to be reused following wheel replace-
ment.
Place the removed cutter head on a fl at,
fi rm base.
Release stud [4-1] with pipe socket wrench
and remove it. Remove the inner ring [4-2].
Withdraw bearing pin [4-3]. Replace grind-
ing wheels [4-4], bushes [4-6] and shims
[4-5] with new ones from the replacement
set.
Mount 5 grinding wheels [4-4] and shim
[4-5] on the bush [4-6]. These 7 groups
must be reset in the cutter head such that
the shim is the nearest to the outer edge
of the cutter head – Fig. [4c].
Insert bearing pin [4-3] through the open-
ings in the cutter head back into the bushes
[4-6].
Secure bearing pin [4-3] by inserting the
inner ring [4-2]. Screw in stud [4-1] and
use pipe socket wrench to tighten it to a
torque of 7 Nm.
With the grinding wheels with "fl at-form"
teeth, ensure the wheels are correctly
aligned – Fig. [4c].
CAUTION
Before the tool head is mounted,
check the true running of the grinding
wheels by turning them manually.