Working Advice - Bosch GWS Professional 5-100 Notice Originale

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16 | English

Working Advice

Clamp the workpiece if it does not remain
stationary due to its own weight.
Do not strain the machine so heavily that it
comes to a standstill.
Grinding and cutting discs become very hot
while working; do not touch until they have
cooled.
Rough Grinding
Never use a cutting disc for roughing.
The best roughing results are achieved when set-
ting the machine at an angle of 30° to 40°. Move
the machine back and forth with moderate pres-
sure. In this manner, the workpiece will not be-
come too hot, does not discolour and no grooves
are formed.
Flap Disc
With the flap disc (accessory), curved surfaces
and profiles can be worked.
Flap discs have a considerably higher service life,
lower noise levels and lower sanding tempera-
tures than conventional sanding sheets.
Cutting Metal
For cutting metal, always work with the pro-
tection guard for cutting 13.
When cutting, work with moderate feed, adapted
to the material being cut. Do not exert pressure
onto the cutting disc, tilt or oscillate the ma-
chine.
Do not reduce the speed of running down cutting
discs by applying sideward pressure.
The machine must
always work in an
up-grinding motion.
Otherwise, the dan-
ger exists of it being
pushed uncon-
trolled out of the
cut.
When cutting pro-
files and square bar,
it is best to start at
the smallest cross
section.
1 609 929 L34 | (24.7.08)
Cutting Stone
For cutting stone, always work with the cut-
ting guide with dust extraction protection
guard 20.
The machine may be used only for dry cut-
ting/grinding.
For cutting stone, it is best to use a diamond cut-
ting disc. As a safety measure against jamming,
the cutting guide with dust extraction protection
guard 20 must be used.
Operate the machine only with dust extraction
and additionally wear a dust protection mask.
The vacuum cleaner must be approved for the ex-
traction of masonry dust. Bosch provides suita-
ble vacuum cleaners.
Switch on the ma-
chine and place the
front part of the cut-
ting guide on the
workpiece. Slide
the machine with
moderate feed,
adapted to the ma-
terial to be worked.
For cutting expecially hard material, e. g., con-
crete with high pebble content, the diamond cut-
ting disc can overheat and become damaged as a
result. This is clearly indicated by circular spark-
ing, rotating with the diamond cutting disc.
In this case, interrupt the cutting process and al-
low the diamond cutting disc to cool by running
the machine for a short time at maximum speed
with no load.
Noticeable decreasing work progress and circu-
lar sparking are indications of a diamond cutting
disc that has become dull. Briefly cutting into
abrasive material (e. g. lime-sand brick) can re-
sharpen the disc again.
Bosch Power Tools