Practical Advice; Maintenance And Service; Maintenance And Cleaning; After-Sales Service And Application Service - Bosch Professional GSR 12V-35 Manual Original

14 | English
Gear II:
High speed range; for working with a small drilling diameter.
Switching on/off
To start the power tool, press and hold the on/off switch
(7).
The lamp (9) lights up when the on/off switch (7) is lightly or
fully pressed for a few seconds, meaning that the work area
is illuminated in poor lighting conditions.
To switch off the power tool, release the on/off switch (7).
Adjusting the Speed
You can adjust the speed of the power tool when it is on by
pressing in the on/off switch (7) to varying extents.
A light pressure on the on/off switch (7) results in a low rota-
tional speed. Increased pressure on the switch causes an in-
crease in speed.
Fully automatic spindle lock (Auto-Lock)
The drill spindle, and therefore the tool holder, are locked
when the on/off switch (7) is not pressed.
This allows screws to be driven in even when the battery is
discharged and enables the power tool to be used as a
screwdriver.
Battery charge-control indicator
When the on/off switch (7) is pressed in halfway or com-
pletely, the battery charge-control indicator (8) 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 (8)
and the lamp (9) 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 the power tool is overloaded or the permitted bat-
tery temperature is exceeded, the electronics of the power
tool will switch off until the temperature returns to within the
optimum operating temperature range.
This status is indicated by the three battery charge indicator
(8) 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 4KY | (11.03.2019)
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 D)
You can use the belt clip (13) 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 E)
You can place screwdriver bits in the magnetic bit holder
(14) for storage.
Colour clip (see figure F)
The colour clip (15) can only be used if the belt clip (13) or
bit holder (14) 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-
ing maintenance and repair of your product as well as spare
Capacity
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
with any questions about our products and their accessor-
26–50 %
ies.
≤ 25%
In all correspondence and spare parts orders, please always
include the 10‑digit article number given on the nameplate
of the product.
Great Britain
Robert Bosch Ltd. (B.S.C.)
P.O. Box 98
Broadwater Park
North Orbital Road
Denham Uxbridge
UB 9 5HJ
At www.bosch-pt.co.uk you can order spare parts or arrange
the collection of a product in need of servicing or repair.
Tel. Service: (0344) 7360109
E-Mail: [email protected]
Ireland
Origo Ltd.
Unit 23 Magna Drive
Magna Business Park
City West
Bosch Power Tools