Bosch Professional GDE 12 Original Instructions Manual page 6

6 | English
Hold the power tool firmly with both hands and make
u
sure you have a stable footing. The power tool is more
securely guided with both hands.
LED worklight
The LED (4) lights up when the rotary hammer's on/off
switch is lightly or fully pressed, meaning that the work area
is illuminated in poor lighting conditions.
Inserting/removing the drill bit (see figure B)
– Press the button (3) for drilling depth adjustment and pull
the guide (2) all the way out.
– Release the button (3) again.
– Slide the tip of the drill bit through the dust cap (8) from
behind and then fit the bit into the drill chuck according to
the instructions of your power tool.
– Before removing the drill bit, press the button (3) again
and pull the guide (2) all the way out.
Adjusting the Guide Length (see figure C)
To ensure dust is extracted cleanly and the
depth stop is set correctly, the guide (2) must
be adjusted so that the tip of the drill bit is flush
at the front with the dust cap (8).
– Insert the required drill bit into the tool holder of the drill
chuck.
– Press the button (3) while adjusting the guide (2) to
match the drill bit length.
– Release the button (3) again.
Note: To store the dust extraction attachment, press the
button (3) and pull the guide (2) all the way out. This re-
lieves the strain on the guide's spring, which increases the
service life of the spring.
Adjusting the Drilling Depth (see figure D)
The button (1) for depth stop adjustment can be used to set
the required drilling depth X.
– Press the button (1) and slide the button on the guide (2)
so that the distance X shown in the illustration matches
your required drilling depth.
– Release the button (1) again.
Changing the dust cap (see figure E)
You must change the dust cap (8) if its wall contact surface
shows clear signs of wear and is causing dust to escape
through the extraction brush during extraction.
– Press the locking button (12) and pull the dust cap (8)
out of the holder.
– Insert the new dust cap into the holder until the locking
button audibly engages.
1 609 92A 8G3 | (17.02.2023)
Emptying the Dust Box (see figures F1−F4)
Note: Wear a dust mask when performing maintenance and
cleaning on the dust box.
Empty the dust box (13) regularly as well as after completing
your work, in order to ensure that the dust extraction attach-
ment continues to perform optimally. The viewing
window (7) enables you to check how full the dust box is.
– Hold the power tool with the dust extraction attachment
horizontally and switch on the power tool for a few
seconds.
This will cause residual dust to be sucked out of the ex-
traction channel into the dust box (13).
– Press both the left-hand and right-hand release
buttons (5) and swivel the dust box (13) out of the dust
extraction attachment.
– If necessary, take the HEPA filter (14) out of the dust box
and carefully tap it out or brush down the filter flaps with
a soft brush.
Note: Do not clean the HEPA filter with water and do not
use compressed air to blow it clean.
– Shake out the dust box (13) over a suitable waste bin.
– Put the HEPA filter (14) back in the dust box (13) after
cleaning it. Then swivel the dust box into the dust extrac-
tion attachment until the release buttons (5) audibly en-
gage.
Maintenance and Service
Maintenance and Cleaning
– Clean the dust extraction attachment using a dry, soft
cloth.
After-Sales Service and Application Service
Our after-sales service responds to your questions concern-
ing maintenance and repair of your product as well as spare
parts. You can find explosion drawings and information on
spare parts at: www.bosch-pt.com
The Bosch product use advice team will be happy to help you
with any questions about our products and their accessor-
ies.
In all correspondence and spare parts orders, please always
include the 10‑digit article number given on the nameplate
of the product.
Malaysia
Robert Bosch Sdn. Bhd.(220975-V) PT/SMY
No. 8A, Jalan 13/6
46200 Petaling Jaya
Selangor
Tel.: (03) 79663194
Toll-Free: 1800 880188
Fax: (03) 79583838
E-Mail: kiathoe.chong@my.bosch.com
www.bosch-pt.com.my
You can find further service addresses at:
www.bosch-pt.com/serviceaddresses
Bosch Power Tools