Starting Operation - Bosch GCM 12 SDE Professional Notice Originale

160992A3UL_201801.book Page 36 Wednesday, January 10, 2018 1:52 PM
36 | English
Adjusting Mitre Angles
To ensure precise cuts, the basic adjustment of the machine
must be checked and adjusted as necessary after intensive
use (see "Checking and Adjusting the Basic Adjustment",
page 39).
Adjusting Standard Mitre Angles (see figure I1)
For quick and precise adjustment of commonly used mitre an-
gles, detents 27 have been provided for on the saw table:
Left
0°
15°; 22.5°;
31.6°; 45°
– Loosen the locking knob 23 in case it is tightened.
– Pull lever 24 and rotate the saw table 19 left or right to the
requested detent.
– Release the lever again. The lever must be felt to engage in
the detent.
Adjusting Any Mitre Angle (see figure I2)
The mitre angle can be set in the range from 52° (left side) to
60° (right side).
– Loosen the locking knob 23 in case it is tightened.
– Pull lever 24 and at the same time push the locking bracket
22 until it engages in the groove intended for this. The saw
table can be moved freely now.
– Turn the saw table 20 left or right by the locking knob until
the angle indicator 26 indicates the requested mitre angle.
For mitre angles greater than 45°:
Pull the saw-table extension 29 completely outward (see
"Extending the Saw Table", page 35).
– Tighten the locking knob 23 again.
– To loosen the lever 24 again (for adjusting standard mitre
angles), pull the lever upward.
The locking bracket 22 snaps back to its original position
and lever 24 can re-engage into the detents 27.
Adjusting Bevel Angles
To ensure precise cuts, the basic adjustment of the machine
must be checked and adjusted as necessary after intensive
use (see "Checking and Adjusting the Basic Adjustment",
page 39).
The vertical bevel angle can be adjusted in a range from 47°
(leftward) to 47° (rightward).
For quick and precise setting of frequently used bevel angles,
stops have been provided for the angles 0°, 47°, 45°, 33.9°
and 22.5°.
 With vertical mitre cuts and the use of the SDS bolt 32,
you need to ensure that the SDS bolt can never come in-
to contact with the workpiece surface before sawing.
This is done by setting an appropriate depth stop (see
"Adjusting the Depth Stop", page 38). This prevents,
that the SDS bolt and / or the workpiece may be damaged.
Adjusting the Left-hand Bevel Angle Range
(see figure J1)
– Pull the left-hand adjustable fence 2 completely outward
(see "Moving the Fence", page 35).
1 609 92A 3UL | (10.1.18)
– Loosen clamping lever 8.
– Tilt the tool arm leftward via handle 13 until the angle indi-
cator 44 indicates the desired bevel angle.
– Tighten clamping lever 8 again.
Adjusting the Complete Bevel Angle Range
(see figure J2)
– Pull the stop 45 completely forward.
This enables you to use the complete bevel angle range
(left and right).
Right
– Pull the right-hand adjustable fence 2 completely outward
or remove it completely (see "Moving the Fence",
page 35).
15°; 22.5°;
If you want to use the complete bevel angle range, you also
31.6°; 45°; 60°
have to pull the left-hand adjustable fence 2 completely
outward or remove it completely.
– Loosen clamping lever 8.
– Tilt the tool arm via handle 13 to the left or right until angle
indicator 44 or 5 indicate the desired bevel angle.
– Tighten clamping lever 8 again.
Adjusting Standard Bevel Angles (see figure J3)
Standard 0° Bevel Angle :
– Swing the tool arm by the handle 13 slightly to the left and
push the stop 45 completely backward.
Standard bevel angles 47°, 45°, 33.9° and 22.5°:
– Turn the left-hand or right-hand stop 3 until the required
standard bevel angle engages at the arrow mark.

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.
Products sold in AUS and NZ only: Use a residual current de-
vice (RCD) with a rated residual current of 30 mA or less.
Switching On (see figure K)
To save energy, only switch the power tool on when using it.
– To start the power tool, first slide the lock-off button 14 to
the middle and then press the On/Off switch 33 and keep
it pressed.
Note: For safety reasons, the On/Off switch 33 cannot be
locked; it must remain pressed during the entire operation.
Switching Off
– To switch off the machine, release the On/Off switch 33.
Reduced starting current
(not available for all country-specific product versions)
The electronic reduced starting current limits the power con-
sumption when switching the tool on and enables operation
from a 13 ampere fuse.
Note: When the machine runs at full speed immediately after
switching on, the reduced starting current has failed. The
power tool should be sent immediately to an after-sales ser-
vice (for addresses, see section "After-sales Service and Ap-
plication Service", page 40).
Bosch Power Tools