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OBJ_BUCH-548-005.book Page 12 Wednesday, March 2, 2016 1:26 PM
12 | English
Vibration total values a
(triax vector sum) and uncertainty K
h
determined according to EN 60745:
Tightening of bolts and nuts of the maximum permitted size:
a
h
K
The vibration level given in this information sheet has been
measured in accordance with a standardised test given in
EN 60745 and may be used to compare one tool with anoth-
er. It may be used for a preliminary assessment of exposure.
The declared vibration emission level represents the main ap-
plications of the tool. However if the tool is used for different
applications, with different accessories or insertion tools or is
poorly maintained, the vibration emission may differ. This
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 2011/65/EU, 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/ETM9,
70538 Stuttgart, GERMANY
Henk Becker
Helmut Heinzelmann
Executive Vice President
Head of Product Certification
Engineering
PT/ETM9
Robert Bosch Power Tools GmbH
70538 Stuttgart, GERMANY
Stuttgart, 01.01.2017
Assembly
Changing the Tool
Before any work on the machine itself, pull the mains
plug.
When working with an application tool, pay attention
that the application tool is firmly seated on the tool
holder. When the application tool is not firmly connected
with the tool holder, it can come loose again and not be
controlled.
1 609 92A 2AT | (2.3.16)
2
m/s
8.0
2
m/s
1.5
Slide the application tool 7 onto the square drive of the tool
holder 6.
Operation
Method of Operation
The tool holder 6 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
Observe correct mains voltage! The voltage of the pow-
er source must agree with the voltage specified on the
nameplate of the machine. Power tools marked with
230 V can also be operated with 220 V.
Reversing the rotational direction
Actuate the rotational direction switch 5 only when the
machine is at a standstill.
The rotational direction switch 5 is used to reverse the rota-
tional direction of the machine.
Right rotation: Press the rotational direction switch 5 down-
ward to the stop (R).
Left rotation: Press the rotational direction switch 5 upward
to the stop (L).
Switching On and Off
To start the machine, press the On/Off switch 4 and keep it
pressed.
To switch off the machine, release the On/Off switch 4.
To save energy, only switch the power tool on when using it.
Working Advice
Before any work on the machine itself, pull the mains
plug.
Operate your machine only with the auxiliary handle 2.
Apply the power tool to the screw/nut only when it is
switched off. Rotating tool inserts can slip off.
The torque depends on the impact duration. The maximum
achieved torque results from the sum of all individual torques
achieved through impact. The maximum torque is achieved
after an impact duration of 6–10 seconds. After this duration,
the tightening torque is increased only minimally.
However, the transmission housing heats up noticeably.
13.0
2.0
Bosch Power Tools
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