Bosch GBH Professional 2-26 E Manual Original página 18

OBJ_BUCH-279-005.book Page 18 Wednesday, December 12, 2012 2:05 PM
18 | English
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 K)
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 3. Otherwise, the movability of the SDS-
plus drilling tool can lead to incorrect adjustment of the
drilling depth.
– Loosen the wing bolt 28 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 29 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 29 further
over the telescopic pipe 27 of the dust extraction attach-
ment than required, so that as much as possible of the
scale 27 on the telescopic pipe remains visible.
– Retighten the wing bolt 28 again. Loosen the clamping
screw 25 on the depth stop of the dust extraction attach-
ment.
– Move the depth stop 26 on the telescopic pipe 27 in such
a manner that the clearance X shown in the figure corre-
sponds with the required drilling depth.
– Tighten the clamping screw 25 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
GBH 2-26 E/RE: With the selector switch for drilling/hammer
drilling 16, the operating mode of the machine is selected.
– To change the operating mode, press the release button
15 and turn the drilling/hammer drilling selector switch 16
to the desired position until it can be heard to latch.
GBH 2-26 DE/DRE/DFR: The operating mode of the power
tool is selected with the mode selector switch 11.
– To change the operating mode, push the release button 10
and turn the mode selector switch 11 to the requested po-
sition until it can be heard to latch.
Note: Change the operating mode only when the machine is
switched off! Otherwise, the machine can be damaged.
1 609 92A 03Z | (12.12.12)
GBH 2-26 E/RE
Position for hammer drilling in
concrete or stone
Position for drilling without im-
pact in wood, metal, ceramic
and plastic as well as for screw-
driving
Vario-Lock position for adjust-
ment of the chiselling position
The mode selector switch 11
does not latch in this position.
Position for chiselling
Reversing the rotational direction
(GBH 2-26 RE/DRE/DFR)
The rotational direction switch 7 is used to reverse the rota-
tional direction of the machine. However, this is not possible
with the On/Off switch 9 actuated.
Right rotation: Turn the selector switch for drilling/ham-
mer drilling 7 on both sides to the stop in the position
.
Left rotation: Turn the selector switch for drilling/ham-
mer drilling 7 on both sides to the stop in the position
.
– Set the direction of rotation for hammer drilling, drilling
and chiselling always to right rotation.
Switching On and Off
– To start the machine, press the On/Off switch 9.
– To lock the On/Off switch, keep it pressed and additionally
push the lock-on button 8.
– To switch off the machine, release the On/Off switch 9.
When the On/Off switch 9 is locked, press it first and then
release it.
To save energy, only switch the power tool on when using it.
Setting the Speed/Impact Rate
The speed/impact rate of the switched on power tool can be
variably adjusted, depending on how far the On/Off switch 9
is pressed.
Light pressure on the On/Off switch 9 results in low speed/im-
pact rate. Further pressure on the switch increases the
speed/impact rate.
Safety Clutch
 If the tool insert becomes caught or jammed, the drive
to the drill spindle is interrupted. Because of the forces
that occur, always hold the power tool firmly with both
hands and provide for a secure stance.
GBH 2-26 DE/DRE/DFR
Bosch Power Tools