Starting Operation; Working Advice - Bosch GCM 12 GDL Professional Notice Originale

OBJ_BUCH-1360-005.book Page 40 Wednesday, December 21, 2016 1:10 PM
40 | English
– Loosen the lock lever 17.
– Lightly tilt the glide arm leftward out of the 0°position via
handle 4 and turn rotary knob 39 until the desired bevel
angle range is indicated.
– Tilt the glide arm via handle 4 to the right until angle indica-
tor 24 indicates the desired bevel angle.
– Hold the glide arm in this position and tighten lock lever 17
again.
The clamping force of the lock lever must securely hold the
position of the glide arm at any bevel angle.
Standard 0° Bevel Angle
To enable simple and swift resetting of the standard 0° bevel
angle, rotary knob 39 will engage in the bevel angle range
.
– Tilt the glide arm from right to left over the 0° position.
Adjusting the Complete Bevel Angle Range
(–47° to +47°)
– Pull both fence extensions 9 completely out-
ward. (see "Extending the Fence", page 39).
– Loosen the lock lever 17.
– Lightly tilt the glide arm leftward out of the
0°position via handle 4 and turn rotary knob 39 until the
desired bevel angle range is indicated.
– Tilt the glide arm via handle 4 to the left or right until angle
indicator 33 or 24 indicate the desired bevel angle.
– Hold the glide arm in this position and tighten lock lever 17
again.
The clamping force of the lock lever must securely hold the
position of the glide arm at any bevel angle.
Standard 22.5° (see figure K)
– Pull adjustment knob 34 completely outward and turn it by
90°. Now, tilt the glide arm via handle 4 until the glide arm
can be heard to engage.

Starting Operation

 Observe the mains voltage! The voltage of the power
source must correspond with the data on the type plate of
the machine.
Switching On (see figure L)
– For starting operation, pull the On/Off switch 60 in the di-
rection of the handle 4.
Note: For safety reasons, the On/Off switch 60 cannot be
locked; it must remain pressed during the entire operation.
The glide arm can only be guided downward by pressing lock-
ing lever 5.
– For sawing, the locking lever 5 must be pushed in addition
to pressing the On/Off switch.
To save energy, only switch the power tool on when using it.
Switching Off
– To switch off the machine, release the On/Off switch 60.
Reduced starting current
The electronic reduced starting current limits the power con-
sumption when switching the tool on and enables operation
from a 13 ampere fuse.
1 609 92A 2P3 | (21.12.16)
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
service (for addresses, see section "After-sales Service and
Application Service", page 45).

Working Advice

General Sawing Instructions
 Always firmly tighten locking knob 15 and lock lever 17
before sawing. Otherwise the saw blade could become
jammed in the workpiece.
 For all cuts, it must first be ensured that the saw blade
at no time can come in contact with the fence, screw
clamps or other machine parts. Remove any mounted
auxiliary stops or adjust them accordingly.
Protect the saw blade against impact and shock. Do not sub-
ject the saw blade to lateral pressure.
Do not saw warped/bent workpieces. The workpiece must
always have a straight edge to face against the fence.
Long workpieces must be underlaid or supported at their free
end.
Marking the Cutting Line (see figure M)
Two laser beams indicate the cutting width of the saw blade.
This allows for exact positioning of the workpiece for sawing,
without having to open the retracting blade guard.
– Switch on the laser beams with switch 61.
– Align your mark on the workpiece between both laser lines.
Note: Before sawing, check if the cutting width is still indicat-
ed correctly (see "Adjusting the Laser", page 43). The laser
beams, as an example, can misadjust through vibrations from
intensive use.
Position of the Operator (see figure N)
 Do not stand in a line with the saw blade in front of the
machine. Always stand aside of the saw blade. This pro-
tects your body against possible kickback.
– Keep hands, fingers and arms away from the rotating saw
blade.
– Do not stand in front of the glide arm with your arms
crossed.
Replacing Insert Plates (see figure O)
The red insert plates 13 can become worn after prolonged
use of the machine.
Replace defective insert plates.
– Bring the power tool into the working position.
– Unscrew screws 62 with the provided hex key (4 mm) 20
and remove the old insert plates.
– Insert the new right-hand insert plate.
– Screw the insert plate as far as possible to the right with
the screws 62 so that the saw blade does not come into
contact with the insert plate over the complete length of
the possible slide motion.
– Repeat the work steps in the same manner for the left-hand
insert plate.
Bosch Power Tools