Starting Operation - Bosch GBH 4-32 DFR Professional Operating Instructions Manual

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OBJ_BUCH-337-001.book Page 18 Monday, May 7, 2007 10:34 AM

Firmly hold the retaining ring of the keyless replace-

ment chuck 12. Open the keyless replacement chuck

by turning the front sleeve in the direction of the sym-

bol "

Insert the drilling tool into the keyless replacement

chuck 12. Firmly hold the retaining ring of the keyless

replacement chuck 12 and turn the front sleeve in the

direction of the symbol "

Check the tight seating by pulling the tool.

Note: If the tool holder was opened to the stop, then

the latching noise possibly may be heard while closing

the tool holder and the tool holder will not close.

In this case, turn the front sleeve 13 once in the oppo-

site direction of the arrow. Afterwards, the tool holder

can be closed (tightened) again.

Turn the mode selector switch 5 to the "drilling" posi-

tion.

Removing Drilling Tools without SDS-plus

(see figure E)

Firmly hold the retaining ring of the keyless replace-

ment chuck 12. Open the keyless replacement chuck

by turning the front sleeve in the direction of the sym-

bol "

Remove the drilling tool.

Dust Extraction with the Dust Extrac-

tion Attachment (Accessory)

Mounting the Dust Extraction Attachment

(see figure F)

For dust extraction, the dust extraction attachment

(accessory) is required. When drilling, the dust extrac-

tion attachment retracts so that the attachment head

is always close to the surface at the drill hole.

Press the button for depth stop adjustment 9 and

remove the depth stop 11. Press button 9 again and

insert the dust extraction attachment into the auxiliary

handle 10 from the front.

Connect an extraction hose (diameter 19 mm, acces-

sory) to the extraction sleeve 15 of the dust extraction

attachment.

The vacuum cleaner must be suitable for the material

being worked.

When vacuuming dry dust that is especially detrimen-

tal to health or carcinogenic, use a special vacuum

cleaner.

18 | English

Adjusting the Drilling Depth on the Dust Extrac-

tion Attachment (see figure G)

The required drilling depth X can also be adjusted

when the dust extraction attachment is mounted.

Insert the SDS-plus drilling tool to the stop into the

SDS-plus tool holder 1. Otherwise, the movability of

the SDS-plus drilling tool can lead to incorrect adjust-

ment of the drilling depth.

Loosen the wing bolt 19 on the dust extraction attach-

ment.

Without switching the power tool on, apply it firmly to

the drilling location. The SDS-plus drilling tool must

face against the surface.

Position the the guide pipe 20 of the dust extraction

attachment in its holding fixture in such a manner that

the head of the dust extraction attachment faces

against the surface to be drilled. Do not slide the

guide pipe 20 further over the telescopic pipe 18 of

the dust extraction attachment than required, so that

as much as possible of the scale 18 on the telescopic

pipe remains visible.

Retighten the wing bolt 19 again. Loosen the clamp-

ing screw 16 on the depth stop of the dust extraction

attachment.

Move the depth stop 17 on the telescopic pipe 18 in

such a manner that the clearance X shown in the fig-

ure corresponds with the required drilling depth.

Tighten the clamping screw 16 in this position.

Operation