Starting Operation - Bosch GBH 4-32 DFR Professional Notice Originale

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OBJ_BUCH-337-008.book Page 15 Thursday, June 16, 2016 2:05 PM
 A damaged dust protection cap should be changed im-
mediately. We recommend having this carried out by
an after-sales service.
Inserting SDS-plus Drilling Tools (see figure C)
– Clean and lightly grease the shank end of the tool.
– Insert the tool in a twisting manner into the tool holder until
it latches itself.
– Check the latching by pulling the tool.
Removing SDS-plus Drilling Tools (see figure D)
– Push back the locking sleeve 3 and remove the tool.
Inserting Drilling Tools without SDS-plus (see figure E)
Note: Do not use tools without SDS-plus for hammer drilling
or chiselling! Tools without SDS-plus and their drill chucks are
damaged by hammer drilling or chiselling.
– Insert the quick change keyless chuck 13.
– Firmly hold the retaining ring of the quick change keyless
chuck 13. Open the quick change keyless chuck by turning
the front sleeve in the direction of the symbol
"
".
– Insert the drilling tool into the quick change keyless chuck
13. Firmly hold the retaining ring of the quick change key-
less chuck 13 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 latch-
ing noise possibly may be heard while closing the tool holder
and the tool holder will not close.
In this case, turn the front sleeve 14 once in the opposite di-
rection of the arrow. Afterwards, the tool holder can be
closed (tightened) again.
– Turn the mode selector switch 5 to the "drilling" position.
Removing Drilling Tools without SDS-plus (see figure E)
– Firmly hold the retaining ring of the quick change keyless
chuck 13. Open the quick change keyless chuck by turning
the front sleeve in the direction of the symbol
"
".
– Remove the drilling tool.
Dust Extraction with the Dust Extraction Attach-
ment (Accessory)
 Dust from materials such as lead-containing coatings,
some wood types, minerals and metal can be harmful to
one's health. Touching or breathing-in the dust can cause
allergic reactions and/or lead to respiratory infections of
the user or bystanders.
Certain dust, such as oak or beech dust, is considered car-
cinogenic, especially in connection with wood-treatment
additives (chromate, wood preservative). Materials con-
taining asbestos may only be worked by specialists.
– As far as possible, use a dust extraction system suitable
for the material.
– Provide for good ventilation of the working place.
– It is recommended to wear a P2 filter-class respirator.
Observe the relevant regulations in your country for the
materials to be worked.
Bosch Power Tools
 Prevent dust accumulation at the workplace. Dust can
easily ignite.
Mounting the Dust Extraction Attachment (see figure F)
For dust extraction, the dust extraction attachment (accesso-
ry) is required. When drilling, the dust extraction 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, accessory)
to the extraction sleeve 16 of the dust extraction attach-
ment.
The vacuum cleaner must be suitable for the material being
worked.
When vacuuming dry dust that is especially detrimental to
health or carcinogenic, use a special vacuum cleaner.
Adjusting the Drilling Depth on the Dust Extraction At-
tachment (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 adjustment of the
drilling depth.
– Loosen the wing bolt 20 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 21 of the dust extraction at-
tachment 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 21 further
over the telescopic pipe 19 of the dust extraction attach-
ment than required, so that as much as possible of the
scale 19 on the telescopic pipe remains visible.
– Retighten the wing bolt 20 again. Loosen the clamping
screw 17 on the depth stop of the dust extraction attach-
ment.
– Move the depth stop 18 on the telescopic pipe 19 in such
a manner that the clearance X shown in the figure corre-
sponds with the required drilling depth.
– Tighten the clamping screw 17 in this position.
Operation

Starting Operation

 Observe correct mains voltage! The voltage of the pow-
er source must agree with the voltage specified on the
nameplate of the machine. Power tools marked with
230 V can also be operated with 220 V.
Setting the operating mode
The operating mode of the power tool is selected with the
mode selector switch 5.
English | 15
1 609 92A 2AA | (16.6.16)

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