Dust/Chip Extraction; Starting Operation - Bosch GGS 28 C Professional Originalbetriebsanleitung

OBJ_BUCH-1269-003.book Page 22 Thursday, December 16, 2010 4:05 PM
22 | English
Assembly
Before any work on the machine itself, pull
the mains plug.
Mounting the Grinding Tools
(see figure A)
Only use properly fitting and undamaged
open-end spanners (see "Technical Data").
– Clean the grinder spindle 3 and all parts to
be mounted.
– Hold the grinder spindle 3 with open-end
spanner 8 by the spanner flats.
Loosen the clamping nut 2 with open-end
spanner 9 by applying it to the spanner flats
and turning in anticlockwise direction.
– Insert the clamping shaft of the grinding tool
to the stop into the collet chuck 1.
– Hold the grinder spindle 3 firmly with open-
end spanner 8 and clamp the tool bit with
open-end spanner 9 by the spanner flats,
turning in clockwise direction.
The grinding tools must run completely concen-
trical. Do not continue to use out-of-round grind-
ing accessories, instead, replace before contin-
uing to work.
Do not tighten the collet chuck of the
clamping nut as long as no grinding acces-
sory is mounted. Otherwise, the collet chuck
can become damaged.

Dust/Chip Extraction

Dusts from materials such as lead-containing
coatings, some wood types, minerals and
metal can be harmful to one's health. Touch-
ing or breathing-in the dusts can cause aller-
gic reactions and/or lead to respiratory infec-
tions of the user or bystanders.
Certain dusts, such as oak or beech dust, are
considered as carcinogenic, especially in
connection with wood-treatment additives
(chromate, wood preservative). Materials
containing asbestos may only be worked by
specialists.
3 609 929 C06 | (16.12.10)
– Provide for good ventilation of the work-
ing place.
– It is recommended to wear a P2 filter-
class respirator.
Observe the relevant regulations in your
country for the materials to be worked.
Prevent dust accumulation at the work-
place. Dusts can easily ignite.
Operation

Starting Operation

Observe correct mains voltage! The voltage
of the power source must agree with the
voltage specified on the nameplate of the
machine. Power tools marked with 230 V
can also be operated with 220 V.
Switching On and Off
To start the power tool, push the On/Off switch
5 forwards.
To lock the On/Off switch 5, press the On/Off
switch 5 down at the front until it latches.
To switch off the power tool, release the On/Off
switch 5 or, if it is locked, briefly push down the
back of the On/Off switch 5 and then release it.
Kickback stop
In case of a sudden drop in speed, e.g., caused
by a jammed disc while cutting, the power sup-
ply to the motor is electronically interrupted.
To restart the operation, switch the On/Off
switch 5 to the Off position and start the ma-
chine again.
Constant Electronic Control
Constant electronic control holds the speed
constant at no-load and under load, and ensures
uniform working performance.
Bosch Power Tools