English - 3
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For all work with the machine, the auxiliary
handle must be mounted.
■
Hold the power tool only by the insulated
gripping surfaces, when performing an op-
eration where the cutting tool may run into
hidden wiring or its own cord.
Contact with a “live” wire will make exposed
metal parts of the tool “live” and shock the op-
erator.
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Use appropriate detectors to determine if
utility lines are hidden in the work area or
call the local utility company for assist-
ance.
Contact with electric lines can lead to fire and
electric shock. Damaging a gas line can lead
to explosion. Penetrating a water line causes
property damage or may cause an electric
shock.
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For work with grinding or cutting discs, the pro-
tection guard 7 must be mounted. For work
with the rubber sanding plate 21 or with the
cup brush 24/disc brush/flap disc, the hand
guard 19 (accessory) is to be mounted.
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Use dust extraction when working with stone.
The vacuum cleaner must be approved for ma-
sonry dust. When cutting stone, use the cutting
guide.
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Do not work with materials containing asbes-
tos.
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Use only grinding tools with a permissible
speed at least as high as the no-load speed of
the machine.
■
Check grinding tools before use. The grinding
tool must be properly mounted and turn freely.
Perform a test run for at least 30 seconds with-
out load. Do not use damaged, out-of-round or
vibrating grinding tools.
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Protect the grinding tool from impact, shock
and grease.
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Apply the machine to the workpiece only when
switched on.
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Keep hands away from rotating grinding tools.
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Pay attention to the direction of rotation. Al-
ways hold the machine so that sparks and
grinding dust fly away from the body.
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When grinding metal, flying sparks are pro-
duced. Take care that no persons are endan-
gered. Due to danger of fire, no combustible
materials should be located in the vicinity
(spark flight zone).
■
Be careful when cutting grooves, e. g. in struc-
tural walls: See Information on Structures.
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Blocking the cutting disc leads to jerking reac-
tion forces on the machine. In this case switch
off the machine immediately.
■
Pay attention to the dimensions of the grinding
disc. The mounting hole diameter must fit the
mounting flange 10 without play. Do not use
reducers or adapters.
■
Never use cutting discs for rough grinding. Do
not exert any lateral pressure on the cutting
discs.
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Observe the manufacturer’s instructions for
mounting and using grinding tools.
■
Caution! The grinding tool runs on after the
machine is switched off.
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Do not clamp the machine in a vice.
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Never allow children to use the machine.
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Bosch is only able to ensure perfect operation
of the machine if the original accessories in-
tended for it are used.
■
Before any work on the machine itself, pull
the mains plug.
■
For work with grinding or cutting discs, the
protection guard 7 must be mounted.
Protection Guard with Locking Screw
The coded projection 15 on the protection
guard 7 ensures that only a guard that fits the
machine type can be mounted.
Loosen the clamping screw 14, if necessary.
Place the protection guard 7 with coded projec-
tion 15 into the coded groove on the spindle col-
lar of the machine head and rotate to the required
position (working position).
The closed side of the protection guard 7
must always point to the operator.
Tighten clamping screw 14.
Mounting the
Protective Devices
17 • 1 609 929 F55 • TMS • 18.12.03
Summary of Contents for GWS PROFESSIONAL 21-180/230 (J)HV
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