Bosch GCD 12 JL Professional Original Instructions Manual page 16

16 | English
Certain kinds of metal dust are hazardous, especially in com-
bination with alloys such as zinc, aluminium or chrome. Ma-
terials containing asbestos may only be machined by special-
ists.
– Provide good ventilation at the workplace.
– It is advisable to wear a P2 filter class breathing mask.
The regulations on the material being machined that apply in
the country of use must be observed.
The saw blade (31) can become blocked by dust, chips or
workpiece fragments in the recess of the saw table (25).
– Switch the power tool off and pull the mains plug out of
the socket.
– Wait until the saw blade has come to a complete stop.
– Pull out the chip drawer (24) and empty it completely.
Avoid dust accumulation at the workplace. Dust can
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easily ignite.
Starting operation
Pay attention to the mains voltage. The voltage of the
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power source must match the voltage specified on the
rating plate of the power tool.
Products that are only sold in AUS and NZ: Use a resid-
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ual current device (RCD) with a nominal residual current
of 30 mA or less.
Position of the operator (see figure I)
Do not stand in line with the saw blade in front of the
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power tool. Always stand to the side of the saw blade.
This protects your body against possible kickback.
– Keep hands, fingers and arms away from the rotating saw
blade.
– Do not reach one arm across the other when in front of
the tool arm .
Switching on (see figure J)
– To start, press the on/off switch (17) and keep it
pressed.
Note: For safety reasons, the on/off switch (17) cannot be
locked; it must remain pressed throughout operation.
The tool arm can only be guided downwards by pushing the
locking lever (1).
– Therefore, in order to saw, the locking lever (1) must be
pressed in addition to pulling the on/off switch.
Soft start
The electronic soft start limits the torque when the power
tool is switched on and increases the service life of the mo-
tor.
Switching off
– To switch off, release the on/off switch (17).
Sawing
– Firmly clamp the workpiece as appropriate for its dimen-
sions.
– Set the required mitre angle as necessary.
– Switch the power tool on.
1 609 92A 59S | (09.07.2019)
– Push the locking lever (1) and slowly guide the tool arm
downwards using the handle (16).
– Saw through the workpiece applying uniform feed.
– Switch off the power tool and wait until the saw blade has
come to a complete stop.
– Slowly guide the tool arm upwards.
Checking and adjusting the basic settings
Pull the plug out of the socket before carrying out any
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work on the power tool.
To ensure precise cuts, the basic settings of the power tool
must be checked and adjusted as necessary after intensive
use.
Experience and suitable special tools are required for this.
A Bosch after-sales service point will handle this work
quickly and reliably.
Adjusting the laser
Note: To test the laser function, the power tool must be con-
nected to the power supply.
While adjusting the laser (e.g. when moving the tool
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arm), never activate the on/off switch. Accidental
starting of the power tool can lead to injuries.
– Bring the power tool into the work position.
Checking: (see figure K1)
– Draw a straight cutting line on the workpiece.
– Push the locking lever (1) and slowly guide the tool arm
downwards using the handle (16).
– Position the workpiece so that the teeth of the saw blade
line up with the cutting line.
– Hold the workpiece in this position and slowly guide the
tool arm upwards.
– Clamp the workpiece.
– Turn on the laser beam using the switch (19).
The laser beam must be flush with the cutting line on the
workpiece along its entire length, even if the tool arm is
guided downwards.
Setting: (see figure K2)
– Turn the set screw (35) using the cross-headed screw-
driver (12) provided until the laser beam is parallel with
the cutting line on the workpiece along its entire length.
One rotation anticlockwise moves the laser beam from left to
right; one rotation clockwise moves the laser beam from
right to left.
Aligning the angle indicator (see figure L)
– Bring the power tool into the transport position.
– Loosen the clamping handle (13) of the angle guide (6).
– Turn the angle guide (6) until it stops at 0°.
Checking
– Set an angle gauge to 90° and position it between the
angle guide (6) and the saw blade (31) on the saw table
(25).
The leg of the angle gauge must be flush with the angle guide
along its entire length.
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