Operating Modes (Fig. L–Q)
The operation of the gearbox for each application is
set with the mode selection switch 11:
Drilling/
Hammer
Screw
Drilling
Driving
For this purpose, press the unlocking button 10 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 11 and the right/left rotation switch 9 as well as
the on/off switch 8 for regulation the speed are to be
set for the various operating modes (see illustrations
on the fold-out page):
Operating Mode
Hammer drilling inconcrete 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 10 and set
the mode selection switch 11 to Vario-Lock (Fig.
Turn the tool holder to the desired position. Thirty six
positions are possible.
Sharpening the Chiselling Tools
(Fig.
–
)
R
T
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.
1 619 929 682 • (04.10) T
Vario-Lock
Chiselling
Fig.
L
Fig.
M
Fig.
N
Fig.
O
Fig.
P
Q
English–4
Maintenance and Cleaning
Before any work on the machine itself, pull the
I
mains plug.
For safe and efficient working, always keep the ma-
I
chine and the ventilation slots clean.
Clean the tool holder daily.
Replacing the Dust Protection Cap
Damaged dust protection caps should be replaced as
soon as possible since dust that enters the tool holder
can cause malfunctions.
It is recommended that this be performed by
customer service.
WARNING
Important instructions for connecting a new 3-
pin plug to the 2-wire cable.
The wires in the cable are coloured according to the
following code:
Strain relief
Live = brown
Neutral = blue
Do not connect the blue or brown wire to the earth ter-
minal of the plug.
Important: If the plug on the cable of this machine
must be replaced, dispose of the old plug to prevent
misuse.
If the machine should fail despite the care taken in the
manufacture and testing, have the repair performed
exclusively by the BTI customer service.
For all inquires and replacement parts orders, please
include the article number on the nameplate of the ma-
chine in all cases.
).
Environmental Protection
Recycle raw materials instead of disposing as
waste.
The machine, accessories and packaging should be
submitted for environment-friendly recycling.
These instructions are printed on recycled paper man-
ufactured without chlorine.
The plastic components are labelled for categorised
recycling.
To be fitted
by qualified
professionals only