Bosch GWS 21-180 H Professional Instructions D'emploi page 17

Mounting the
Protective Devices
Before any work on the machine itself, pull
the mains plug.
For work with grinding or cutting discs, the
protection guard 6 must be mounted.
Protection Guard with Locking Screw
The coded projection 14 on the protection
guard 6 ensures that only a guard that fits the ma-
chine type can be mounted.
Loosen the clamping screw 13, if necessary.
Place the protection guard 6 with coded projec-
tion 14 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 6
must always point to the operator.
Tighten clamping screw 13.
Protection Guard with Quick Clamp
The protection guard is preadjusted to the
diameter of the spindle collar. If required,
the tightening tension of the clamping
bracket can be changed by tightening or
loosening the adjustment screw 7. Always
ensure that the protection guard 6 is
seated tightly on the spindle collar.
Open the clamping lever 8.
Place the protection guard 6 on the spindle collar
of the machine head and turn to the required po-
sition (working position).
To fasten the protection guard 6, close the
clamping lever 8.
The closed side of the protection guard 6
must always point to the operator.
Auxiliary Handle
For all work with the machine, the auxiliary
handle must be mounted.
Screw the auxiliary handle 4 into the head of the
machine according to the working method.
18 • 1 609 929 R35 • 03.11
Vibration-dampening Auxiliary Handle
The vibration-dampening auxiliary handle re-
duces the vibrations, making operation more
comfortable and secure.
Do not make any alterations to the aux-
iliary handle.
Do not continue to use an auxiliary handle if it is
damaged.
Hand Guard
For work with the rubber sanding plate 20 or with
the cup brush 23/disc brush/flap disc, the hand
guard 18 (accessory) is to be mounted. The hand
guard 18 is fastened with the auxiliary handle 4.
Mounting the Grinding Tools
Before any work on the machine itself, pull
the mains plug.
Use only grinding tools with a permissi-
ble speed at least as high as the no-load
speed of the machine.
Grinding and cutting discs become very
hot while working; do not touch until
they have cooled.
Clean the grinder spindle and all parts to be
mounted. For clamping and loosening the
grinding tools, lock the grinder spindle 5 with
the spindle lock button 2.
Actuate the spindle lock button 2 only when
the grinder spindle is at a standstill!
Grinding/Cutting Disc
Pay attention to the dimensions of the grinding
disc. The mounting hole diameter must fit the
mounting flange 9 without play. Do not use re-
ducers or adapters.
When using a diamond cutting disc, take care
that the direction-of-rotation arrow on the dia-
mond cutting disc and the direction of rotation of
the machine (direction-of-rotation arrow on the
machine head) agree.
For mounting, see the illustration page.
Screw on the clamping nut 11 and tighten with
the two-pin spanner (see Section "Quick-clamp-
ing Nut").
English - 4