Starting Operation; Working Advice - Bosch GPO 12 CE Professional Original Instructions Manual

or breathing-in the dusts can cause allergic
reactions and/or lead to respiratory infections
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
containing asbestos may only be worked by
specialists.
– Provide for good ventilation of the working
place.
– It is recommended to wear a P2 filterclass
respirator.
Observe the relevant regulations in your country for
the materials to be worked.
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.
► Hold power tool by insulated gripping
surfaces 2 and auxiliary handle 5 and 6
only. The accessory may contact hidden
wiring or its own cord. Accessory contacting
a "live" wire may make exposed metal parts
of the power tool "live" and shock the operator.
When operating the machine with power from mobile
generators 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 occur upon switching on.
Please observe the suitability of the power generator
being used, particularly with regard to the mains
voltage and frequency.
Switching On and Off
To start the power tool, push the On/Off switch 3 forwards.
To lock the On/Off switch 4, press the On/Off
Switch 3 down at the front until it latches.
To switch off the power tool, release the On/Off
switch 3 or, if it is locked, briefly push down the back
of the On/Off switch 3 and then release it.
Speed preselection
The required speed can be preselected with the
thumbwheel 4 (also while running). The required speed
F 000 622 334 | 01.2011
preservative). Materials
depends on the material and the working conditions
and can be determined through practical testing.
Thumbwheel 4
1
2
3
4
5
6
Constant Electronic Control
Constant electronic control holds the speed constant
at no-load and under load, and ensures uniform
working performance.

Working advice

► Exercise caution when cutting slots in
structural walls; see Section "Information
on Structures ".
► 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. After heavily straining the
power tool, continue to run it at no-load for
several minutes to cool down the cutting/
grinding tool.
► Sanding discs become very hot while
working; do not touch until they have
cooled.
► Do not use the power tool with a cut-off
stand.
Polishing
For the polishing of weathered paint or buffing out
scratches (e.g., acrylic glass), the machine can be
equipped with appropriate polishing accessories such as
lamb's wool bonnet, polishing felt or sponge (accessories).
Select a low speed for polishing (stage 1 – 2) in order to
avoid excessive heating of the surface.
Apply polishing agent crosswise or in a circular motion
with a polishing sponge and moderate pressure, and
then allow it to dry lightly.
Polish the partially dried polishing agent with crosswise
or circular motions using a lamb's wool polishing bonnet.
Clean the polishing
ensure good polishing results. Wash out polishing
English |
-1
No-load speed (min
750
1.200
1.600
2.000
2.400
3.000
accessories regularly
Bosch Power Tools
29
)
to