Declaration Of Conformity; Dust/Chip Extraction - Bosch GKS 190 Professional Manual Original

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OBJ_BUCH-813-004.book Page 16 Monday, February 9, 2015 5:09 PM
16 | English
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 significantly
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, 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 60745-2-5.
Technical file (2006/42/EC) at:
Robert Bosch GmbH, PT/ETM9,
70764 Leinfelden-Echterdingen, GERMANY
Henk Becker
Helmut Heinzelmann
Executive Vice President
Head of Product Certification
Engineering
PT/ETM9
Robert Bosch GmbH, Power Tools Division
70764 Leinfelden-Echterdingen, GERMANY
Leinfelden, 03.02.2015
Assembly
Mounting/Replacing the Saw Blade
 Before any work on the machine itself, pull the mains
plug.
 When mounting the saw blade, wear protective gloves.
Danger of injury when touching the saw blade.
 Only use saw blades that correspond with the charac-
teristic data given in the operating instructions.
 Do not under any circumstances use grinding discs as
the cutting tool.
Selecting a Saw Blade
An overview of recommended saw blades can be found at the
end of this manual.
Removal of the Saw Blade (see figure A)
For changing the cutting tool, it is best to place the machine
on the face side of the motor housing.
– Press the spindle lock button 4 and keep it pressed.
1 609 92A 14T | (9.2.15)
 The spindle lock button 4 may be actuated only when
the saw spindle is at a standstill. Otherwise, the power
tool can be damaged.
– With the Hex key 17, unscrew the clamping bolt 18 turning
in rotation direction .
– Tilt back the retracting blade guard 11 and hold firmly.
– Remove the clamping flange 19 and the saw blade 20 from
the saw spindle 22.
Mounting the Saw Blade (see figure A)
For changing the cutting tool, it is best to place the machine
on the face side of the motor housing.
– Clean the saw blade 20 and all clamping parts to be assem-
bled.
– Tilt back the retracting blade guard 11 and hold firmly.
– Place the saw blade 20 on to the mounting flange 21. The
cutting direction of the teeth (direction or arrow on saw
blade) and the direction-of-rotation arrow on the blade
guard 15 must correspond.
– Mount the clamping flange 19 and screw in the clamping
bolt 18 turning in rotation direction . Observe correct
mounting position of mounting flange 21 and clamping
flange 19.
– Press the spindle lock button 4 and keep it pressed.
– With the Hex key 17, tighten the clamping bolt 18 turning
in rotation direction . The tightening torque is between
6–9 Nm, which corresponds to hand tight plus ¼ turn.

Dust/Chip Extraction

 Before any work on the machine itself, pull the mains
plug.
 Dusts from materials such as lead-containing coatings,
some wood types, minerals and metal can be harmful to
one's health. Touching or breathing-in the dusts can cause
allergic reactions and/or lead to respiratory infections of
the user or bystanders.
Certain dusts, such as oak or beech dust, are considered
as carcinogenic, especially in connection with wood-treat-
ment additives (chromate, wood preservative). Materials
containing asbestos may only be worked by specialists.
– As far as possible, use a dust extraction system suitable
for the material.
– Provide for good ventilation of the working place.
– It is recommended to wear a P2 filter-class respirator.
Observe the relevant regulations in your country for the mate-
rials to be worked.
 Prevent dust accumulation at the workplace. Dusts can
easily ignite.
Mounting the Extraction Adapter (see figure B)
Attach the extraction adapter 23 onto the chip ejector 14 un-
til it latches. A vacuum hose with a diameter of 35 mm can be
connected to the extraction adapter 23.
 The extraction adapter may not be mounted when no
external dust extraction is connected. Otherwise the ex-
traction channel can become clogged.
 Do not connect a dust bag to the extraction adapter.
Otherwise the extraction system can become clogged.
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