Manual Bosch GDB 1600 DE (page 21 of 314) (English, German, Dutch, Danish, French, Italian, Polish, Portuguese, Swedish, Turkish, Spanish, Norwegian, Finnish)

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English | 21

Bosch Power Tools 1 609 929 V13 | (18.11.10)

Disassembling the Drill Head

Completely unscrew the clamping screw 15 on

the flushing head 6 or on the suction head 19

respectively. Loosen the clamping by appyling

light pressure onto the clamping screw.

Pull off the flushing head or the suction head

respectively from the drill head holder 20.

Inserting/Replacing the Core Bit

f Operation with drill stand: Before any work

on the machine itself, for longer work

breaks, as well as when not using, secure

the power tool against unintentional motion

by engaging the feed lock. For this, read and

observe the operating instructions of the drill

stand.

Core Bit Selection

Wet-drilling core bits may be used only with the

flushing head 6, dry-drilling core bits with the

suction head 19.

Inserting a Core Bit

f Examine the core bit before inserting it.

Use only core bits that are in perfect condi-

tion. Damaged or deformed core bits can

lead to dangerous situations.

Clean the core bit before inserting it. Apply a

light coat of grease to the core bit thread or

spray on a corrosion protection agent.

Either screw a G 1/2" core bit into drill spindle

13 or a 1 1/4" UNC core bit onto drill spindle 13.

f Check the proper seating of the core bit. In-

correctly or unsecurely fastened core bits

can become loose during operation and may

pose a danger.

Inserting a sliding ring 11 (accessory) between

the drill spindle and the 1 1/4"-UNC core bit pro-

vide for easier loosening of the core bit after

use.

Removing a Core Bit

f Wear protective gloves when replacing the

core bit. The core bit can become hot after

prolonged operation of the power tool.

Loosen core bit 12 with an open-end spanner

(1 1/4" UNC core bit: Spanner size, 41 mm;

G 1/2" core bit: Spanner size, 22 mm). When do-

ing this, counter-hold the bore spindle 13 by the

flats using a second open-end spanner (spanner

size, 36 mm).

Connecting the Water Cooling/Dust

Extraction

When wet- or dry-drilling core bits are not suffi-

ciently cooled during drilling, the diamond seg-

ments can become damaged or the core bit can

become jammed in the bore hole. Therefore,

provide for sufficient water cooling during wet

drilling, and for proper operating dust extrac-

tion during dry drilling.

When boring out a given bore, the given bore

must be carefully plugged in order to enable suf-

ficient cooling of the core bit.

f Connected hoses, shut-off valves or acces-

sories must not obstruct or hinder the drill-

ing process.

Water Cooling of the Flushing Head

(GDB 1600 WE)

Shut the water cock 10. Connect water supply

to the water-outlet connector 5. The water sup-

ply is possible either via a mobile water-pres-

sure container (accessory) or via stationary wa-

ter connection.

When the machine is inserted in a drill stand,

the water coming out of the bore can be collect-

ed using the water collection ring and an all-pur-

pose vacuum cleaner (both accessories).

f When wet-drilling overhead, the water com-

ing out must be collected. For this, insert

the machine into a drill stand and mount a

water collection ring.

For assembly of the water collection ring, read

and observe its operating instructions.

Bosch core bits are colour-coded:

Wet-drilling core bits blue

Dry-drilling core bits light grey

OBJ_BUCH-116-003.book Page 21 Thursday, November 18, 2010 11:49 AM

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Bosch GDB 1600 DE Manual

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