to tighten it to a torque of 7 Nm.
With the grinding wheels with "flat-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.
Changing grinding discs
Reduced material removal quality is caused by
tool wear. Grinding heads can be reused after
changing the grinding disc.
Place the removed cutter head [5-3] on a clean
and fl at base.
Release screws [5-1] and remove them.
Clean clamping surfaces of grinding head.
Replace grinding disc [5-2] with a new one and
secure again with screws [5-1].
Tighten to a tightening torque of 5 Nm.
Changing lower brush
If the lower brush [6-3] is excessively worn, its
protective function will be impaired. It therefore
has to be changed.
Remove screws [6-1] and take off slide plates
[6-2].
Remove lower brush [6-3] including springs
[6-4].
Fit springs [6-4] on bolts [6-5] of new lower
brush and insert brush. When doing this, en-
sure that the springs fall onto the suction hood
bolt [6-6].
Place slide plates [6-2] in position and secure
with screws [6-1].
Check mechanism for correct function.
Changing front brush
If the front brush [7-1] is excessively worn, its
protective function will be impaired. It therefore
has to be changed.
Release screws [7-2] and guard panel [7-3].
Replace front brush [7-1] with a new one, place
panel in position and secure with screws [7-2].
7.7
Dust extraction
Dust created during work can be harmful to
health, combustible or explosive.
The machine must be connected to a suitable ex-
traction system (vacuum cleaner). The vacuum
cleaner must be suitable for the processed mate-
rial. If the vacuumed dust is particularly harmful
18
to health, carcinogenic or dry, a special vacuum
cleaner from the Festool range must be used.
The extraction connector [1-1] is suitable for an
extraction hose with dia. 36 mm.
To guarantee optimum extraction and a long ser-
vice life of the cutting and grinding tools, the ex-
traction channels must be cleaned regularly.
7.8
Balancer
The grinding is provided with a lifting eye [1-10]
for using a balancer.
This weight relief makes work easier, e.g. on fa-
cades and walls.
7.9
Surface guidance system BG-RG 150
The surface guidance system allows the machine
to be guided in upright position on the fl oor. The
integrated weight guarantees optimum contact
pressure. The rollers facilitate transport of the
complete device between the different places of
use.
8
Work instructions
With the machine switched on, place it on the sur-
face of the workpiece and move it in longitudinal
and transverse direction in a parallel or circular
motion.
The material removal capacity is determined,
above all, by a suitably selected tool and the set-
ting of the material removal depth.
An excessive increase in pressure does not results
in increase material removal, but rather leads to
increased wear of the machine and grinding tools.
During the work process, ensure that the extrac-
tor hose is not kinked or damaged.
Faulty extraction leads to increased dust contami-
nation and wear of the grinding tool.
CAUTION
During work, check whether the grinding
wheels continuously turn freely about their
axes. If they do not, remove them from the tool
head.