Bosch GSH 5 CE Professional - Manual (Page 13)

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Bosch Power Tools 1 609 92A 03V | (28.11.12)
Assembly
 Before any work on the machine itself, pull the mains
plug.
Auxiliary Handle (see figure A)
 Operate your machine only with the auxiliary handle
10.
The auxiliary handle 10 can be set to any position for a secure
and low-fatigue working posture.
– Loosen the knurled nut 11, rotate the auxiliary handle 10
around the axis of the machine to the required position and
tighten the knurled nut 11 again.
– The auxiliary handle 10 can be mounted to a different posi-
tion. For this, completely unscrew the knurled nut 11 and
then pull out the hexagon bolt upward. Pull off the auxiliary
handle 10 to the side and turn around the remaining
clamping element by 180°. Mount the auxiliary handle 10
in reverse order.
Changing the Tool
With the SDS-max tool holder, simpler and easier tool chang-
ing is possible without additional aids.
The dust protection cap 1 largely prevents the penetration of
dust into the tool holder during operation. When inserting the
tool, pay attention that the dust protection cap 1 is not dam-
aged.
 A damaged dust protection cap should be changed im-
mediately. We recommend having this carried out by
an after-sales service.
Inserting (see figure B)
– Clean and lightly grease the shank end of the tool.
– Insert the tool in a twisting manner into the tool holder until
it latches itself.
– Check the latching by pulling the tool.
Removing (see figure C)
– Push back the locking sleeve 2 and remove the tool.
Dust/Chip Extraction
Dusts from materials such as lead-containing coatings, some
wood types, minerals and metal can be harmful to one’s
health. Touching 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 preservative). Materials contain-
ing asbestos may only be worked by specialists.
– 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 mate-
rials to be worked.
Operation
Starting Operation
 Observe correct mains voltage! The voltage of the pow-
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.
Switching On and Off
– To start the machine, press the On/Off switch 6 at the top
(I) until it locks.
– To switch off the machine, press the On/Off switch 6 at
the bottom (0) and release it.
For low temperatures, the power tool reaches the full ham-
mer/impact capacity only after a certain time.
To save energy, only switch the power tool on when using it.
Setting the Speed/Impact Rate
The electronic control enables stepless speed and impact
preselection in accordance with the material to be worked.
The constant electronic control keeps the preselected speed
and impact rate nearly constant between no-load and load
conditions.
Select the speed with the thumbwheel 7 according to the ma-
terial.
When plugging the plug into the socket outlet or after a power
failure, the constant electronic control automatically sets the
highest speed and impact rate. This ensures working at opti-
mum performance despite too low preadjustment of the
thumbwheel 7.
The data in the following table are recommended values.
Changing the Chiselling Position (Vario-Lock)
The chisel can be locked in 12 positions. In this manner, the
optimum working position can be set for each application.
– Insert the chisel into the tool holder.
– Push the chisel adjustment ring 3 forward and turn the
chisel to the required position with the chisel adjustment
ring 3.
– Release the chisel adjustment ring 3 and turn the chisel un-
til it latches.
Application Thumb-
wheel 7
Working roughcast/light building materials
Removing tiles
Working brick
Working concrete
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