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

OBJ_BUCH-2047-001.book Page 17 Monday, February 3, 2014 11:18 AM
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
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

 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.
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, push the insert tool to the
stop into the tool holder 1 and release the locking sleeve 2 to
lock the insert tool.
Screwdriver bits 16 can be inserted using a universal bit hold-
er with ball lock 15.
Removing
Pull the locking sleeve 2 forward and remove the insert 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
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 17 onto the square drive of the tool
holder 1.
However based on the system, if the application tool 17 ap-
pears wobbly after connecting securely on 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 se-
cured in the tool holder.
Bosch Power Tools
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

Inserting the battery
 Use only original Bosch lithium ion batteries with the
voltage listed on the nameplate of your power tool. Us-
ing other batteries can lead to injuries and pose a fire haz-
ard.
Set the rotational direction switch 9 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.
Reversing the rotational direction (see figure D)
The rotational direction switch 9 is used to reverse the rota-
tional direction of the machine. However, this is not possible
with the On/Off switch 10 actuated.
Right rotation: For driving in screws and tightening nuts,
press the rotational direction switch 9 through to the left
stop.
Left Rotation: For loosening and unscrewing screws and
nuts, press the rotational direction switch 9 through to the
right stop.
Switching On and Off
To start the machine, press the On/Off switch 10 and keep it
pressed.
To switch off the machine, release the On/Off switch 10.
To save energy, only switch the power tool on when using it.
Adjusting the Speed
The speed of the switched on power tool can be variably ad-
justed, depending on how far the On/Off switch 10 is
pressed.
Light pressure on the On/Off switch 10 results in a low rota-
tional speed. Further pressure on the switch results in an in-
crease in speed.
Preselecting the Speed/Impact Frequency
With the button 6 you can preselect the required speed/im-
pact rate in three stages. Press the button 6 repeatedly until
the desired setting appears in the speed indicator 7. The se-
lected setting will be saved.
The required speed/impact frequency depends on the mate-
rial and the working conditions, and can be determined
through practical testing.
English | 17
2 609 140 921 | (3.2.14)