Working Advice - Bosch GWS Professional 1000 Original Instructions Manual

OBJ_BUCH-310-003.book Page 30 Wednesday, March 24, 2010 9:03 AM
30 | English
Switching On and Off
To start the power tool, push the On/Off switch
3 forwards.
To lock the On/Off switch 3, press the On/Off
switch 3 down at the front until it latches.
To switch off the power tool, release the On/Off
switch 3 or, if it is locked, briefly push down the
back of the On/Off switch 3 and then release it.
Check grinding tools before using. The
grinding tool must be mounted properly
and be able to move freely. Carry out a test
run for at least one minute with no load. Do
not use damaged, out-of-centre or vibrating
grinding tools. Damaged grinding tools can
burst and cause injuries.
Reduced starting current
(GWS 1100/GWS 1400)
The electronic reduced starting current limits
the power consumption when switching the tool
on and enables operation from a 13 ampere
fuse.
Constant Electronic Control
(GWS 1100/GWS 1400)
Constant electronic control holds the speed
constant at no-load and under load, and ensures
uniform working performance.

Working Advice

Exercise caution when cutting slots in
structural walls; see Section "Information
on Structures ".
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.
After heavily straining the power tool, con-
tinue to run it at no-load for several minutes
to cool down the accessory.
Grinding and cutting discs become very hot
while working; do not touch until they have
cooled.
Do not use the power tool with a cut-off
stand.
1 609 929 W53 | (24.3.10)
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 with bonded abrasives, always
use the protection guard for cutting 13.
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
Provide for sufficient dust extraction when
cutting stone.
Wear a dust respirator.
The machine may be used only for dry cut-
ting/grinding.
For cutting stone, it is best to use a diamond
cutting disc.
The machine must
always work in an
up-grinding mo-
tion. Otherwise,
the danger exists
of it being pushed
uncontrolled out
of the cut.
When cutting pro-
files and square
bar, it is best to
start at the small-
est cross section.
Bosch Power Tools