English |
23
Bosch Power Tools
1 609 929 T45 | (27.11.09)
Approved Grinding Tools
All grinding tools mentioned in these operating
instructions can be used.
The permissible speed [min
-1
] or the circumfer-
ential speed [m/s] of the grinding tools used
must at least match the values given in the table.
Therefore, observe the permissible
rotational/
circumferential speed
on the label of the grind-
ing tool.
Dust/Chip Extraction
f
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.
– 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.
Operation
Starting Operation
f
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 machine, push lock-on button
8
to-
ward the front and then press the On/Off switch
7
.
To
lock
the pressed On/Off switch
7
, push the
lock-on button
8
further toward the front.
To
switch off
the power tool, release the On/Off
switch
7
, or when it is locked, briefly press the
On/Off switch
7
and then release it.
f
Check grinding tools before using. The
grinding tool must be mounted properly
and be able to move freely. Carry out a test
run for at least one minute with no load. Do
not use damaged, out-of-centre or vibrating
grinding tools.
Damaged grinding tools can
burst and cause injuries.
Speed preselection (GPO 12 E)
The required speed can be preselected with the
thumbwheel
6
(also while running).
The required speed depends on the material
and the working conditions and can be deter-
mined through practical testing.
Working Advice
f
Clamp the workpiece if it does not remain
stationary due to its own weight.
f
Do not strain the machine so heavily that it
comes to a standstill.
f
After heavily straining the power tool, con-
tinue to run it at no-load for several minutes
to cool down the cutting/grinding tool.
For sanding applications on soft materials, e. g.,
gypsum or paint, it is recommended to use the
rubber sanding plate
17
with sanding disc
18
.
Cup brushes
21
and wheel brushes are suitable
for rust removal.
max.
[mm]
[mm]
D
b
d
[min
-1
] [m/s]
230
–
–
3000
80
100 30 M 14
3000
45
D
D
b
d
OBJ_BUCH-1139-001.book Page 23 Friday, November 27, 2009 11:44 AM
