Bosch GBH 5-40 DCE Professional Original Operating Instructions page 10

OBJ_BUCH-512-003.book Page 10 Friday, August 1, 2008 12:16 PM
10 | English
Vario-Lock position for adjustment
of the chiseling position
Position for chiseling
In the "chiseling" position, the impact rate prese-
lected with the dial control 6 is automatically in-
creased when switching on; this causes the pow-
er tool to operate with increased capacity when
chiseling.
Switching On/Off in Drilling Mode
To start the power tool, press the On/Off switch
5 and keep it pressed.
To switch off the power tool, release the On/Off
switch 5.
Switching On/Off in Chiseling Mode
To start the machine, press the On/Off switch 5
at the top (I) until it locks.
To switch off the machine, press the On/Off
switch 5 at the bottom (0) and release it.
For low temperatures, the power tool reaches
the full hammer/impact capacity only after a cer-
tain time.
Setting the Speed/Impact Rate
The electronic control enables stepless speed
and impact preselection in accordance with the
material to be worked.
The constant electronic control keeps the prese-
lected speed and impact rate nearly constant be-
tween no-load and load conditions.
1 619 929 792 | (1.8.08)
When plugging the plug into the socket outlet or
after a power failure, the constant electronic
control automatically sets the highest speed and
impact rate. This ensures working at optimum
performance despite too low preadjustment of
the dial control 6.
Select the impact rate with the dial control 6 ac-
cording to the material.
The data in the following table are recommended
values.
Application
Working roughcast/light build-
ing materials
Removing tiles
Working brick
Working concrete
Overload 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.
If the power tool jams, switch the machine
off and loosen the tool insert. When switch-
ing the power tool on with the drilling tool
jammed, high reaction torques can occur.
Changing the Chiseling Position (Vario-Lock)
The chisel can be locked in 12 positions. In this
manner, the optimum working position can be
set for each application.
Insert the chisel into the tool holder.
Turn the mode selector switch 3 to the "Vario-
Lock" position (see "Setting the Operating
Mode", page 9).
Turn the tool holder to the requested chiseling
position.
Turn the mode selector switch 3 to the chiseling
position. The tool holder is now locked.
The mode selector switch 3 must always be
locked in the "Chiselling" position when
chiselling.
Dial Control
Position
Bosch Power Tools