Bosch GBH 2-24 DS Instrucciones De Servicio página 12

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Working Instructions (Fig. R–T)
Auxiliary Handle (Fig.
For safety reasons, the machine should be
s
used only with the auxiliary handle 9.
By rotating the auxiliary handle 9 to a comfortable po-
sition, a fatigue-free and therefore safe working posi-
tion can be achieved.
To rotate the auxiliary handle 9 , first release the han-
dle by turning it counter-clockwise.
Then retighten the auxiliary handle 9.
Overload Clutch
If the drill bit becomes jammed or caught, the drive to
the drill spindle is interrupted. Because of the forces
that occur as a result, always hold the machine se-
curely with both hands and take a firm stance.
Depth Stop (Fig.
S
Loosen the winged screw 14 on the auxiliary handle 9 .
Adjust the drilling depth t on the depth stop 10 .
Retighten the winged screw.
Dust Vacuuming/Vacuuming Attachment
Dust produced while working can be detrimental to
s
health, inflammable or explosive. Suitable protec-
tion measures are required.
Examples: Some dusts are considered to be carci-
nogenic. Use suitable dust/chip extraction and
wear a dust protection mask.
Light metal dust can burn or explode. Always keep
s
the work place clean since material mixtures are
especially dangerous.
The machine can be connected directly to the socket
of a Bosch all-purpose vacuum cleaner with remote
starting . The vacuum cleaner starts automatically
when the machine is switched on.
Mount the vacuuming attachment (optional accessory)
and connect the vacuum cleaner.
The vacuuming attachment is spring loaded up to the
preselected drilling depth. In this manner, the vacuum-
ing attachment head is always held close to the sur-
face.
Setting the Speed
(GBH 2-24 DSE/GBH 2-24 DSR) (Fig.
By increasing or decreasing the pressure on the on/off
switch 5 , the speed can be continuously controlled
during operation.
Advantages:
Slow starting of holes, e.g., on smooth surfaces or
tiles
No sliding off of the drill when stating the hole
No splintering of the hole.
The speed must be selected according to the operat-
ing mode, the material to be worked and the diameter
of the drill.
See Operating Modes for recommended values.
1 619 929 608 • (03.02) T
)
R
)
T
Operating Modes (Fig. A–L, U)
The operation of the gearbox for each application is
set with the mode selection switch 7 :
Drilling/
Screw
Driving
For this purpose, press the unlocking button 8 and set
to the desired operating mode.
The operating mode selector switch may be ac-
tuated only at a standstill.
Do not use tools without SDS-plus for hammer
drilling or chiselling!
The following table shows how the mode selection
switch 7 and the right/left rotation switch 6 (GBH 2-24
DSR) as well as the on/off switch 5 for regulation the
speed (GBH 2-24 DSE/GBH 2-24 DSR) are to be set
for the various operating modes (see illustrations on
the fold-out page):
Operating Mode
Hammer drilling in
concrete or stone
Drilling in steel or wood
Screw driving
Right rotation
Left rotation
Chiselling
Chisel Adjustment (Vario-Lock)
The chiselling tool can be turned in the tool holder
(Vario-Lock) to an optimum, fatigue-free working posi-
tion.
Insert the tool. Press the unlocking button 8 and set
the mode selection switch 7 to Vario-Lock (Fig.
Turn the tool holder to the desired position. Thirty six
)
positions are possible.
Sharpening the Chiselling Tools
(Fig.
V
X
With sharpened insertion tools, one achieves good
working performance and long service life. Therefore,
sharpen the chisel regularly.
Sharpen the tool on a grinding wheel (e.g. alumina
oxide) with constant water supply.
Take care that the cutting edge does not show signs
of coloration since this affects the hardness of the tool.
English–3
Hammer
Vario-Lock
Drilling
Type GBH 2-24
DS
Fig.
Fig.
Fig.
)
Chiselling
DSE
DSR
Fig.
Fig.
A
D
H
Fig.
Fig.
B
E
I
Fig.
Fig.
F
J
Fig.
K
Fig.
Fig.
C
G
L
).
U

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