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Bosch GWS 21-230 JHV Manual

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English - 6
All grinding tools mentioned in this operating
manual instruction can be used.
The permissible speed [rpm] or the circumferen-
tial speed [m/s] of the grinding tools used must at
least match the values given in the table.
Therefore, always observe the permissible
rotational/circumferential speed on the label
of the grinding tool.
Observe correct mains voltage: The voltage of
the power source must agree with the voltage
specified on the nameplate of the machine.
Equipment marked with 230 V can also be con-
nected to 220 V.
Switching On and Off
To start the machine, press the On/Off switch 3
forward and then down.
To lock-on, push the pressed On/Off switch 3
further forwards.
To switch off the machine, release the On/Off
switch 3 or push and release it then.
Switch version without lock
(country-specific):
To start the machine, press the On/Off switch 3
forward and then down.
To switch off the machine, release the On/Off
switch 3.
☞
Test run!
Check the grinding tool before use. The
grinding tool must be properly mounted
and rotate freely. Perform a test run of at
least 30 seconds without load. Do not use
damaged, out-of-round or vibrating grind-
ing tools.
Reduced Starting Current
(Type J)
As a result of soft starting, a 13 A fuse is
adequate.
A machine without reduced starting current
requires higher fuse protection (use at least
a 13 A time-delay fuse).
■ Clamp the workpiece if it does not remain
stationary due to its own weight.
■ Do not strain the machine so heavily that it
comes to a standstill.
■ Grinding and cutting discs become very
hot while working; do not touch until they
have cooled.
Rough Grinding
The best roughing results are
achieved when setting the machine
at an angle of 30° to 40°. Move the
machine back and forth with mod-
erate pressure. In this manner, the
workpiece will not become too hot,
does not discolour and no grooves
are formed.
Never use a cutting disc for roughing.
Flap Disc
With the flap disc (accessory), curved surfaces
and profiles (contour sanding) can be worked.
Flap discs have a considerably higher service life
than sanding sheets, lower noise level and lower
sanding temperatures.
Approved Grinding Tools
max.
[mm] [mm]
Db d[rpm] [m/s]
180
230
8
8
22.2
22.2
8 500
6 500
80
80
180
230
–
–
–
–
8 500
6 500
80
80
100 30 M 14 8 500 45
Initial Operation
b
d
D
D
D
b
d
Operating Instructions
1 609 929 R35.book Seite 6 Mittwoch, 13. Februar 2008 1:16 13
20 • 1 609 929 R35 • 03.11
… 19 …


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