Bosch GDS Professional 18 V-EC 250 Originalbetriebsanleitung Seite 13

OBJ_BUCH-2279-003.book Page 13 Tuesday, September 6, 2016 2:31 PM
may significantly increase the exposure level over the total
working period.
An estimation of the level of exposure to vibration should also
take into account the times when the tool is switched off or
when it is running but not actually doing the job. This may sig-
nificantly reduce the exposure level over the total working
period.
Identify additional safety measures to protect the operator
from the effects of vibration such as: maintain the tool and the
accessories, keep the hands warm, organisation of work pat-
terns.
Declaration of Conformity
We declare under our sole responsibility that the product de-
scribed under "Technical Data" is in conformity with all rele-
vant provisions of the directives 2009/125/EC (Regulation
1194/2012), 2011/65/EU, until 19 April 2016:
2004/108/EC, from 20 April 2016 on: 2014/30/EU,
2006/42/EC including their amendments and complies with
the following standards: EN 60745-1, EN 60745-2-2,
EN 50581.
Technical file (2006/42/EC) at:
Robert Bosch Power Tools GmbH, PT/ECS,
70538 Stuttgart, GERMANY
Henk Becker Helmut Heinzelmann
Executive Vice President Head of Product Certification
Engineering and PT/ECS
Manufacturing
Robert Bosch Power Tools GmbH
70538 Stuttgart, GERMANY
Stuttgart, 01.01.2017
Assembly
Battery Charging
Note: The battery supplied is partially charged. To ensure full
capacity of the battery, completely charge the battery in the
battery charger before using your power tool for the first time.
The lithium-ion battery can be charged at any time without re-
ducing its service life. Interrupting the charging procedure
does not damage the battery.
The lithium-ion battery is protected against deep discharging
by the "Electronic Cell Protection (ECP)". When the battery is
empty, the machine is switched off by means of a protective
circuit: The inserted tool no longer rotates.
 Do not continue to press the On/Off switch after the
machine has been automatically switched off. The bat-
tery can be damaged.
Observe the notes for disposal.
Removing the battery
The battery 4 is equipped with two locking levels that should
prevent the battery from falling out when pushing the battery
unlocking button 5 unintentionally. As long as the battery is
Bosch Power Tools
inserted in the power tool, it is held in position by means of a
spring.
To remove the battery 4, press the unlocking button 5 and
pull out the battery toward the front. Do not exert any force.
Changing the Tool (see figure A)
 Before any work on the machine itself (e. g. mainte-
nance, tool change, etc.) as well as during transport
and storage, remove the battery from the power tool.
There is danger of injury when unintentionally actuating
the On/Off switch.
 Regularly clean the power tool's air vents. The motor's
fan will draw the dust inside the housing and excessive ac-
cumulation of powdered metal may cause electrical haz-
ards.
 When working with an application tool, pay attention
that the application tool is connected securely on the
tool holder. When the application tool is not securely con-
nected with the tool holder, it can come off during applica-
tion.
Slide the application tool 10 onto the square drive of the tool
holder 1.
With this system, there will be a slight amount of play around
the application tool 10 after connecting securely to the tool
holder 1; this has no influence on the function/safety.
Operation
Method of Operation
The tool holder 1 with the tool is driven by an electric motor
via a gear and impact mechanism.
The working procedure is divided into two phases:
Screwing in and tightening (impact mechanism in action).
The impact mechanism is activated as soon as the screwed
connection runs tight and thus load is put on the motor. In this
instance, the impact mechanism converts the power of the
motor to steady rotary impacts. When loosening screws or
nuts, the process is reversed.
Starting Operation
To save energy, only switch the power tool on when using it.
Inserting the battery
Set the rotational direction switch 6 to the centre position to
protect the power tool against accidental starting.
Insert the charged battery 4 from the front into the base of the
power tool until the battery is securely locked.
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1 609 92A 2NW | (6.9.16)