Bosch PWS 700-115 Manual Original página 28

OBJ_BUCH-393-003.book Page 28 Thursday, February 14, 2008 3:56 PM
28 | English
Rough Grinding
Never use a cutting disc for roughing.
The best roughing results are achieved when
setting the machine at an angle of 30° to 40°.
Move the machine back and forth with moderate
pressure. In this manner, the workpiece will not
become 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 tem-
peratures than conventional sanding sheets.
Cutting Metal
For cutting metal, always work with the pro-
tection guard for cutting 7.
When cutting, work with moderate feed, adapt-
ed to the material being cut. Do not exert pres-
sure onto the cutting disc, tilt or oscillate the
machine.
Do not reduce the speed of running down cut-
ting discs by applying sideward pressure.
When cutting profiles and square bar, it is best
to start at the smallest cross section.
Cutting Stone
For cutting stone, always work with the cut-
ting guide with dust extraction protection
guard 16.
The machine may be used only for dry cut-
ting/grinding.
1 609 929 R16 | (14.2.08)
For cutting stone, it is best to use a diamond
cutting disc. As a safety measure against jam-
ming, the cutting guide with dust extraction pro-
tection guard 16 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
extraction of masonry dust. Bosch provides suit-
able vacuum cleaners.
For cutting expecially hard material, e. g., con-
crete with high pebble content, the diamond
cutting disc can overheat and become damaged
as a result. This is clearly indicated by circular
sparking, rotating with the diamond cutting
disc.
In this case, interrupt the cutting process and al-
The machine must
low the diamond cutting disc to cool by running
always work in an
the machine for a short time at maximum speed
up-grinding mo-
with no load.
tion. Otherwise,
the danger exists
Noticeable decreasing work progress and circu-
of it being pushed
lar sparking are indications of a diamond cutting
uncontrolled out
disc that has become dull. Briefly cutting into
of the cut.
abrasive material (e. g. lime-sand brick) can re-
sharpen the disc again.
Information on Structures
Slots in structural walls are subject to the
Standard DIN 1053 Part 1, or country-specific
regulations.
These regulations are to be observed under all
circumstances. Before beginning work, consult
the responsible structural engineer, architect or
the construction supervisor.
Switch on the ma-
chine and place
the front part of
the cutting guide
on the workpiece.
Slide the machine
with moderate
feed, adapted to
the material to be
worked.
Bosch Power Tools