English - 2
■Connect machines that are used in the open
via a residual current device (RCD) with an ac-
tuating current of 30 mA maximum. Use only
extension cables that are approved for outdoor
use.
■When working with the machine, always hold it
firmly with both hands and provide for a secure
stance.
■Always direct the cable to the rear away from
the machine.
■Always switch off the machine and allow to
come to a stop before placing it down.
■Insert the mains plug only when the machine is
switched off.
■For mains failure or when the main plug is
pulled, unlock the On/Off switch immediately
and turn it to the off position. This prevents un-
controlled restarting.
■The machine can be used only for dry sanding.
■For all work with the machine, the auxiliary
handle 4 must be mounted. For work with the
rubber sanding plate 7 or with the cup
brush 14/disc brush/flap disc, mounting the
hand protector 6 (optional extra) is recom-
mended.
■Use a vacuum cleaner for drawing off the dust
when working with stone. The vacuum cleaner
must be approved for masonry dust.
■Do not work with materials containing asbes-
tos.
■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.
■Protect the grinding tool from impact, shock
and grease.
■Apply the machine to the workpiece only when
switched on.
■Keep hands away from rotating grinding tools.
■Pay attention to the direction of rotation. Al-
ways hold the machine so that sparks and
grinding dust fly away from the body.
■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).
■Observe the manufacturer’s instructions for
mounting and using grinding tools.
■Caution! The grinding tool runs on after the
machine is switched off.
■Do not clamp the machine in a vice.
■Never allow children to use the machine.
■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.
Auxiliary Handle
■For all work with the machine, the auxiliary
handle 4 must be mounted.
Screw the auxiliary handle 4 into the head of the
machine according to the working method.
Hand Protector (Optional extra)
For work with the rubber sanding plate 7 or with
the cup brush 14/disc brush/flap disc, mounting
the hand protector 6 (optional extra) is recom-
mended. The hand protector 6 is fastened with
the auxiliary handle 4.
■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.
■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 locking button 2.
Actuate the spindle locking button 2 only
when the grinder spindle is at a standstill!
Flap disc (GWS 21 U)
Place the special retainer flange 11 (optional ex-
tra, Order No. 2 605 703 028) and the flap disc
on the grinder spindle 5. Screw on the clamping
nut 13 and tighten with the two-pin spanner.
Rubber Sanding Plate 7
Place the rubber sanding plate 7 with sanding
sheet onto the grinder spindle 5.
For mounting, see the illustration page.
Screw on the round nut 9 and tighten with the
two-pin spanner.
Mounting the
Protective Devices
Mounting the Grinding Tools
(Optional Accessories)
9 • 1 609 929 C78 • TMS • 01.10.01
