Manual Bosch GDB 1600 DE (page 23 of 314) (English, German, Dutch, Danish, French, Italian, Polish, Portuguese, Swedish, Turkish, Spanish, Norwegian, Finnish)

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English | 23

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

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Bosch GDB 1600 DE Manual

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