Bosch Heavy Duty GSB 12V-35 Professional Manual Original página 20

20 | English
Set the torque presetting ring (4) to the re-
quired torque.
Impact drilling (GSB)
Set the operating mode presetting ring (5) to
the "impact drilling" symbol.
Adjusting the Speed/Impact Rate
You can adjust the speed/impact rate of the power tool when
it is on by pressing in the on/off switch (10) to varying ex-
tents.
Applying light pressure to the on/off switch (10) results in a
low rotational speed/impact rate. Applying increasing pres-
sure to the switch increases the speed/impact rate.
Switching on/off
To start the power tool, press and hold the on/off switch
(10).
To switch off the power tool, release the on/off switch (10).
Fully automatic spindle lock (Auto-Lock)
The drill spindle, and therefore the tool holder(1), are
locked when the on/off switch (10) is not pressed.
This enables screws to be screwed in even when the battery
(9) is empty and allows the power tool to be used as a
screwdriver.
Battery charge-control indicator
When the on/off switch (10) is pressed in halfway or com-
pletely, the battery charge-control indicator (11) indicates
the charge condition of the battery for several seconds. The
indicator consists of three green LEDs.
The three LEDs of the battery charge-control indicator (11)
and the lamp (12) flash urgently when the temperature of
the battery falls or rises outside the operating temperature
range of –20 to +50 °C.
LED
Continuous light 3 x green
Continuous light 2 x green
Continuous light 1 x green
Slowly flashing light 1 x green
Temperature-dependent overload protection
In normal conditions of use, the power tool cannot be over-
loaded. If there is an extreme overload, the power tool
switches off until the optimal operating temperature range is
reached again.
This status is indicated by the three battery charge indicator
(11) LEDs flashing in a chase sequence. The LEDs turn off if
the power tool has reached the optimum operating temper-
ature again.
Practical advice
Only apply the power tool to the screw/nut when the
u
tool is switched off. Rotating tool inserts can slip off.
After working at a low speed for an extended period, you
should operate the power tool at the maximum speed for ap-
proximately three minutes without load to cool it down.
1 609 92A 5ES | (09.03.2020)
When drilling into metal, only use sharpened HSS drills (HSS
= high-speed steel) which are in perfect condition. The
Bosch accessory range guarantees appropriate quality.
Before screwing larger, longer screws into hard materials, it
is advisable to pre-drill a pilot hole with the core diameter of
the thread to approx. 2/3 of the screw length.
Belt clip (see figure E)
You can use the belt clip (16) to hang the power tool on a
belt, for example. You then have both hands free and the
power tool is always within easy reach.
Bit holder (see figure F)
You can place screwdriver bits in the bit holder (17) for stor-
age.
Colour clip (see figure G)
The colour clip (18) can only be used if the belt clip (16) or
bit holder are not fitted.
Maintenance and Service
Maintenance and Cleaning
Remove the battery from the power tool before carry-
u
ing out work on the power tool (e.g. maintenance,
changing tool, etc.). The battery should also be re-
moved for transport and storage. There is risk of injury
from unintentionally pressing the on/off switch.
To ensure safe and efficient operation, always keep
u
the power tool and the ventilation slots clean.
After-Sales Service and Application Service
Our after-sales service responds to your questions concern-
Capacity
ing maintenance and repair of your product as well as spare
parts. You can find explosion drawings and information on
≥ 76%
spare parts at: www.bosch-pt.com
51–75 %
The Bosch product use advice team will be happy to help you
26–50 %
with any questions about our products and their accessor-
≤ 25%
ies.
In all correspondence and spare parts orders, please always
include the 10‑digit article number given on the nameplate
of the product.
Australia, New Zealand and Pacific Islands
Robert Bosch Australia Pty. Ltd.
Power Tools
Locked Bag 66
Clayton South VIC 3169
Customer Contact Center
Inside Australia:
Phone: (01300) 307044
Fax: (01300) 307045
Inside New Zealand:
Phone: (0800) 543353
Fax: (0800) 428570
Outside AU and NZ:
Phone: +61 3 95415555
Bosch Power Tools