Bosch GSH 11 E Professional Original Instructions Manual page 17

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A damaged dust protection cap should be
changed immediately. We recommend hav-
ing this carried out by an after-sales serv-
ice.
Inserting (see figure A)
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 B)
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. 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
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.
Bosch Power Tools
Switching On and Off
To start the machine, push the On/Off switch 4
to the right.
To switch off the machine, push the On/Off
switch 4 to the left.
For low temperatures, the machine reaches the
full impact rate only after a certain time.
This start-up time can be shortened by striking
the chisel in the machine against the floor one
time.
Setting the Impact Rate
The electronic control enables stepless speed
preselection in accordance with the material to
be worked.
The constant electronic control keeps the prese-
lected impact rate nearly constant between no-
load and load conditions.
Select the impact rate with the thumbwheel 5
according to the material.
The data in the following table are recommend-
ed values.
Thumbwheel Position 5
1
2
3
4
5
6
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 until it latches.
English | 17
-1
Impact Rate (min
1030
1180
1360
1540
1720
1900
1 609 929 T27 | (23.11.09)
)