Dust/Chip Extraction; Starting Operation - Bosch GBM 13 HRE Professional Originalbetriebsanleitung

Screwdriver Tools (see figure C)
When working with screwdriver bits 8, a univer-
sal bit holder 9 should always be used. Use only
screwdriver bits that fit the screw head.
Replacing the Drill Chuck
Before any work on the machine itself, pull
the mains plug.
Removing the Securing Screw (see figure D)
The key type drill chuck 1 is secured with a se-
curing screw 10 against unintentional loosening.
Open the drill chuck 1 completely and unscrew
the securing screw 10 by turning in clockwise di-
rection. Please observe that the securing
screw has a left-hand thread.
If the securing screw 10 is seated tightly, apply
a screwdriver to the screw head and loosen the
securing screw by giving a blow onto the handle
of the screwdriver.
Removing the Drill Chuck (see figure E)
To remove the key type drill chuck 1, clamp an
Allen key 11 into the key type drill chuck 1. Place
the machine onto a stable support, e. g. a work-
bench. Hold the machine tightly and loosen the
key type drill chuck 1 by turning the Allen key 11
in anticlockwise direction. A tightly seated key
type drill chuck is loosened by applying a light
blow onto the long end of the Allen key 11. Re-
move the Allen key from the key type drill chuck
and fully unscrew the drill chuck.
Mounting the Drill Chuck (see figure F)
The drill type key chuck is mounted in reverse
order.
The drill chuck must be tightened with a
tightening torque of approx. 10–15 Nm.
Screw the securing screw 10 in anti-clockwise
direction into the opened keyless chuck. Always
use a new securing screw, as the threads are
covered with a thread-locking compound that
loses its effect after multiple usage.
Bosch Power Tools

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.
Reversing the Rotational Direction
The rotational direction switch 2 is used to re-
verse the rotational direction of the machine.
However, this is not possible with the On/Off
switch 3 actuated.
Right Rotation: For drilling and driving in
screws, push the rotational direction switch 2
left to the stop.
Left Rotation: For loosening and unscrewing
screws and nuts, press the rotational direction
switch 2 through to the right stop.
English | 17
1 609 929 T20 | (4.11.09)