Changing The Tool; Method Of Operation; Starting Operation - Bosch GDR 14,4 V-EC Professional Manual Original

To remove the battery (4), press the release button (5) and
pull the battery forward and out of the power tool. Do not
use force to do this.

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.
Regularly clean the power tool's air vents. The motor's
u
fan can draw the dust inside the housing and excessive
accumulation of powdered metal may cause electrical
hazards.
GDR 14.4 V-EC/GDR 18 V-EC/GDX 14.4 V-EC/GDX 18 V-
EC:
Inserting
Pull the locking sleeve (2) forward, guide the application tool
(1) into the tool holder up to the stop and release the locking
sleeve (2) to lock the application tool.
Screwdriver bits (16) can be inserted using a universal bit
holder with ball catch (15).
Removing
Pull the locking sleeve (2) forward and remove the applica-
tion tool.
GDS 14.4 V-EC/GDS 18 V-EC/GDX 14.4 V-EC/GDX 18 V-
EC:
When working with an application tool, pay attention
u
that the application tool is connected securely to the
tool holder. When the application tool is not securely
connected with the tool holder, it can come off during ap-
plication.
Slide the application tool (17) onto the square drive of the
tool holder (1).
Due to the way the system operates, the application tool
(17) will move around slightly in the tool holder (1); this has
no influence on the function/safety.
GDX 14.4 V-EC/GDX 18 V-EC:
Some application tools (e.g. double bits) cannot be safely
secured in the tool holder.
Bosch Power Tools
Operation

Method of Operation

The tool holder (1) (with the application 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 load is therefore put on the motor.
The impact mechanism then converts the power of the mo-
tor to steady rotary impacts. When loosening screws or nuts,
the process is reversed.

Starting Operation

Inserting the battery
Use only original Bosch lithium-ion batteries with the
u
voltage stated on the type plate of your power tool.
Using other batteries can lead to injuries and pose a fire
hazard.
Set the rotational direction switch (9) to the centre position
to protect the power tool from being switched on accident-
ally.
Push the charged battery (4) into the base of the power tool
from the front until the battery is securely locked.
Set the rotational direction (see figure D)
The rotational direction switch (9) is used to change the ro-
tational direction of the power tool. However, this is not pos-
sible while the on/off switch (10) is being pressed.
Right rotation: To drive in screws and tighten nuts, press
the rotational direction switch (9) through to the left stop.
Left Rotation: To loosen and unscrew screws and nuts,
press the rotational direction switch (9) through to the right
stop.
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).
Adjusting the Speed
You can adjust the speed of the power tool when it is on by
pressing in the on/off switch (10) to varying extents.
A light pressure on the on/off switch (10) results in a low ro-
tational speed. Increased pressure on the switch causes an
increase in speed.
Preselecting the speed/impact rate
With the button (6), you can preselect the required speed/
impact rate in three stages. Press the button (6) repeatedly
until the desired setting appears in the speed indicator (7).
The selected setting will be saved.
The required speed/impact rate is dependent on the mater-
ial and the work conditions and can be determined by prac-
tical trials.
English | 17
1 609 92A 4PU | (16.10.2018)