Noise/Vibration Information; Charging The Battery; Dust/Chip Extraction - Bosch GSR 12V-20 Professional HEAVY DUTY Manual Original

Noise/vibration information

Noise emission values determined according to
EN 60745-2-1, EN 62841-2-2.
Typically, the A-weighted sound pressure level of the power
tool is 72 dB(A). Uncertainty K = 3 dB. The noise level when
working can exceed 80 dB(A).
Wear hearing protection
Total vibration values a (triax vector sum) and uncertainty K
h
determined according to
EN 60745-2-1, EN 62841-2-2:
Drilling into metal: a < 2.5 m/s
h
2
Screwdriving: a < 2.5 m/s
h
The vibration level and noise emission value given in these
instructions have been measured in accordance with a
standardised measuring procedure and may be used to com-
pare power tools. They may also be used for a preliminary
estimation of vibration and noise emissions.
The stated vibration level and noise emission value repres-
ent the main applications of the power tool. However, if the
power tool is used for other applications, with different ap-
plication tools or is poorly maintained, the vibration level
and noise emission value may differ. This may significantly
increase the vibration and noise emissions over the total
working period.
To estimate vibration and noise emissions accurately, the
times when the tool is switched off or when it is running but
not actually being used should also be taken into account.
This may significantly reduce vibration and noise emissions
over the total working period.
Implement additional safety measures to protect the oper-
ator from the effects of vibration, such as servicing the
power tool and application tools, keeping their hands warm,
and organising workflows correctly.
Fitting

Charging the battery

Use only the chargers listed in the technical data. Only
u
these chargers are matched to the lithium-ion battery of
your power tool.
Note: The battery is supplied partially charged. To ensure
full battery capacity, fully charge the battery in the charger
before using your power tool for the first time.
The lithium-ion battery can be charged at any time without
reducing its service life. Interrupting the charging process
does not damage the battery.
The lithium-ion battery is protected against deep discharge
by the "Electronic Cell Protection (ECP)". When the battery
is discharged, the power tool is switched off by means of a
protective circuit: The application tool no longer rotates.
Do not continue to press the On/Off switch after the
u
power tool has automatically switched off. The battery
can be damaged.
Bosch Power Tools
2 2
, K= 1.5 m/s
2
, K= 1.5 m/s
Removing the battery (see figure A)
To remove the battery (5), press the release button (4) and
pull the battery downwards out of the power tool. Do not
use force to do this.
Follow the instructions on correct disposal.
Changing the tool
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.
Inserting the application tool
GSR 12V-20 HX (see figure B)
Pull the locking sleeve (2) forward, guide the application tool
into the tool holder up to the stop and release the locking
sleeve (2) to lock the application tool.
GSR 12V-20 (see figure C)
Open the keyless chuck (11) by turning it in the direction of
rotation ➊ until the tool can be inserted. Insert the tool.
Firmly tighten the keyless chuck (11) by turning it by hand in
the direction of rotation ➋. This will automatically lock the
drill chuck.
Removing (GSR 12V-20 HX)
Pull the locking sleeve (2) forward and remove the applica-
tion tool.

Dust/chip extraction

The dust from materials such as lead paint, some types of
wood, minerals and metal can be harmful to human health.
Touching or breathing in this dust can trigger allergic reac-
tions and/or cause respiratory illnesses in the user or in
people in the near vicinity.
Certain dusts, such as oak or beech dust, are classified as
carcinogenic, especially in conjunction with wood treatment
additives (chromate, wood preservative). Materials contain-
ing asbestos may only be machined by specialists.
– Use a dust extraction system that is suitable for the ma-
terial wherever possible.
– Provide good ventilation at the workplace.
– It is advisable to wear a P2 filter class breathing mask.
The regulations on the material being machined that apply in
the country of use must be observed.
Avoid dust accumulation at the workplace. Dust can
u
easily ignite.
Operation
Start-up
Inserting the battery
Note: The use of batteries unsuitable for your power tool can
lead to malfunctions or damage to the power tool.
Set the rotational direction switch (7) to the middle position
to avoid unintentionally switching it on. Insert the charged
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1 609 92A 4NF | (31.10.2018)