Bosch GWS18V-10 Consignes D'utilisation/De Sécurité page 29

by the grinder body and the auxiliary
handle .
• Gradually lower the rear of tool using
the front end of the foot as the hinge
point .
• When the foot rests flat on the surface
being cut, proceed cutting in forward
direction to end of cut.
3. Always maintain contact between the guard
foot and work piece.
4. Slide the tool forward at a moderate speed
adapted to the material being cut. Always
cut towards the dust extraction port to
maximize dust extraction and reduce likeli-
hood of kickback
5. Apply minimum pressure to the work sur-
face, allowing the tool to operate at high
speed. Cutting rate is greatest when the
tool operates at high speed.
6. When the cut is completed, remove tool
from work piece before turning off. Allow
wheel to stop rotating before setting tool
down.
Tip: When performing deep cuts, it is best to
cut in several shallow passes. Each pass should
be only to the segment depth of the wheel. Ma-
sonry dust is abrasive and may wear and weak-
en the segment bond.
When cutting especially hard material, e. g.,
concrete with high pebble content, the dry
diamond wheel can overheat and become dam-
aged. This is clearly indicated by circular spark-
ing of the rotating dry diamond wheel. In this
case, interrupt the cutting process and allow
the dry diamond wheel to cool by running the
tool for a short period of time at the maximum
speed with no-load.
Noticeable decreasing work progress and circu-
lar sparking are indications of a dry diamond
wheel that has become dull. Briefly cutting into
abrasive materials (e. g. brick) can resharpen
the wheel.
Operating Instructions
.
Concrete Surfacing
Operate the tool with a dust extraction system
and personal dust protection, e.g. respirator,
dust mask, etc. The vacuum used for this ap-
plication must be approved for the extraction
of masonry and concrete dust. Bosch sells suit-
able vacuum cleaners.
Diamond cup wheels should be carefully se-
lected in order to use the grinder most effi-
ciently. Wheels vary in type of material they are
designed to remove and how aggressively they
will remove material. The correct wheel to use
is determined by the job.
1. Allow the tool to reach full speed before
touching the tool to the work surface.
2. Hold the tool with two hands and keep
diamond wheel flat on the work surface.
3. Apply minimum pressure, allowing the tool
to operate at high speed. Removal rate is
greatest when the tool operates at high
speed.
4. Continuously move the tool at a moderate
speed to avoid creating gouges in the work
surface.
5. Remove the tool from work surface before
turning tool off. Allow the tool to stop
rotating before laying it down.
Tip: For optimal dust collection, all sides of
the surfacing dust collection guard must stay
in contact with the surface and the surfacing
guard must be connected to a vacuum. A dull
diamond wheel can be sharpened by briefly
surfacing an abrasive material (eg. sand stone).
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