Dust/Chip Extraction; Starting Operation - Bosch Professional GWS 20-180 Manual

OBJ_BUCH-1293-003.book Page 7 Friday, November 25, 2016 8:21 AM
Lock the grinder spindle with
the spindle lock button 1. To
27
tighten the quick-clamping
nut, firmly turn the grinding
disc in clockwise direction.
A properly attached, undam-
aged quick-clamping nut can
be loosened by hand when
turning the knurled ring in an-
ticlockwise direction.
Never loosen a tight quick-
clamping nut with pliers.
_Always use the two-pin
spanner. Insert the two-pin
spanner as shown in the illus-
tration.
Approved Grinding Tools
All grinding tools mentioned in these operating instructions
can be used.
-1
The permissible speed [min ] or the circumferential speed
[m/s] of the grinding tools used must at least match the values
given in the table.
Therefore, observe the permissible rotational/circumferen-
tial speed on the label of the grinding tool.
max.
[mm] [mm]
D b
180 8 22.2
230 8 22.2
D
180
–
230
d
100 30 M 14
b
D
Bosch Power Tools
Rotating the Machine Head
 Before any work on the machine itself, pull the mains
tion protection guard 24 or for left-handed persons.
Completely unscrew the four screws. Rotate the machine
head carefully, without removing it from the housing, to the
new position. Screw in and tighten the four screws again.

Dust/Chip Extraction

 Dust from materials such as lead-containing coatings,
 Prevent dust accumulation at the workplace. Dust can
Operation
-1
d [min ] [m/s]

Starting Operation

8500 80
6500 80
 Observe correct mains voltage! The voltage of the pow-
8500 80
–
6500 80
When operating the machine with power from mobile genera-
tors that do not have sufficient reserve capacity or are not
equipped with suitable voltage control with starting current
amplification, loss of performance or untypical behavior can
8500 45
occur upon switching on.
Please observe the suitability of the power generator being
used, particularly with regard to the mains voltage and fre-
quency.
plug.
The machine head can be
rotated with respect to
the machine housing in
90° steps. In this manner,
the On/Off switch can be
brought into a more con-
venient position for spe-
cial working situations,
e. g., for cutting opera-
tions using the cutting
guide with dust extrac-
some wood types, minerals and metal can be harmful to
one's health. Touching or breathing-in the dust can cause
allergic reactions and/or lead to respiratory infections of
the user or bystanders.
Certain dust, such as oak or beech dust, is considered car-
cinogenic, especially in connection with wood-treatment
additives (chromate, wood preservative). Materials con-
taining asbestos may only be worked by specialists.
– As far as possible, use a dust extraction system suitable
for the material.
– Provide for good ventilation of the working place.
– It is recommended to wear a P2 filter-class respirator.
Observe the relevant regulations in your country for the
materials to be worked.
easily ignite.
er 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.
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