Bosch GWS Professional 7-100 Manual Original página 31

OBJ_BUCH-952-002.book Page 32 Wednesday, October 14, 2009 1:34 PM
32 | English
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.
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
cutting disc. As a safety measure against jam-
ming, the cutting guide with dust extraction pro-
tection 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
extraction of masonry dust. Bosch provides suit-
able vacuum cleaners.
1 619 P07 577 | (14.10.09)
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,
Noticeable decreasing work progress and circu-
the danger exists
lar sparking are indications of a diamond cutting
of it being pushed
disc that has become dull. Briefly cutting into
uncontrolled out
abrasive material (e. g. lime-sand brick) can re-
of the cut.
sharpen the disc again.
When cutting pro-
files and square
Information on Structures
bar, it is best to
Slots in structural walls are subject to the
start at the small-
Standard DIN 1053 Part 1, or country-specific
est cross section.
regulations.
These regulations are to be observed under all
circumstances. Before beginning work, consult
the responsible structural engineer, architect or
the construction supervisor.
Maintenance and Service
Maintenance and Cleaning
Before any work on the machine itself, pull
the mains plug.
For safe and proper working, always keep
the machine and ventilation slots clean.
In extreme conditions, always use dust ex-
traction as far as possible. Blow out ventila-
Switch on the ma-
tion slots frequently and install a residual
chine and place
current device (RCD). When working metals,
the front part of conductive dust can settle in the interior of
the cutting guide
the power tool. The total insulation of the
on the workpiece. power tool can be impaired.
Slide the machine
Please store and handle the accessory(-ies)
with moderate
carefully.
feed, adapted to
If the machine should fail despite the care taken
the material to be
in manufacturing and testing procedures, repair
worked.
should be carried out by an after-sales service
centre for Bosch power tools.
Bosch Power Tools