Bosch GDB 1600 WE Professional - Manual (Page 23)

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Bosch Power Tools 1 609 929 V13 | (18.11.10)
Working Advice
f Before any work on the machine itself, pull
the mains plug.
Always use a centring cross (accessory) when
starting the drilling procedure without the use
of a drill stand.
Start drilling in 1. gear at low speed until the
core bit rotates vibration-free in the material. Af-
terwards switch to the 2. gear, if required.
While drilling, adapt the feed pressure to the
material being drilled. Drill with uniform pres-
sure. Lightly pull the core bit out of the bore
from time to time so that the drilling sludge or
drilling dust can be removed from the core bit
segments.
Do not overload the machine. The control indi-
cator 1 flashes in case of overload (see “Control
Indicator”).
Safety Clutch
f
If the tool insert becomes caught or
jammed, the drive to the drill spindle is in-
terrupted. Because of the forces that occur,
always hold the power tool firmly with both
hands and provide for a secure stance.
Control Indicator
The control indicator 1
flashes:
The power tool is operating
in the overload range.
Reduce the feed pressure. If
required, switch the ma-
chine off and sharpen the
core bit.
When the feed pressure is not reduced, the elec-
tronic control will reduce the speed. In case of
continued overload, the power tool switches
off. Free the load on the power tool and switch
on again.
The control indicator 1
lights up continuously:
The carbon brushes must be
replaced.
A Bosch after-sales service
station will handle this main-
tenance task quickly and re-
liably.
Removing the Core
GDB 1600 WE with flusing head 6: After drilling,
continue to run the water for a short period in
order to flush out the drilling sludge between
the core bit and the core.
If the drilling core is stuck in the core bit, then
apply light blows onto the core bit with a piece
of soft wood or plastic in order to loosen the
core. If required, pry the drilling core out of the
core bit using an appropriate hand tool (slotted
screwdriver or similar).
Note: Do not hammer or apply blows onto
the core bit with hard objects (danger of
deformation)!
OBJ_BUCH-116-003.book Page 23 Thursday, November 18, 2010 11:49 AM