Berner BHD-5 Mode D'emploi page 19

• Push the drill bit into a surface at a right angle
and adjust the depth adjustment rod (11) as
shown.
• Tighten the clamp nut (17).
Instructions for use
• Always observe the safety instructions
and applicable regulations.
• Be aware of the location of pipework and
wiring.
• Apply only a gentle pressure to the tool
(approx. 20 kg). Excessive force does
not speed up drilling or chiselling but
decreases tool performance and may
shorten tool life.
Drilling with a solid bit (fig. A)
• Set the electronic speed and impact control dial (2).
• Set the mode selector lever (4) to the
„hammer drilling" position.
• Insert the appropriate drill bit.
• Fit and adjust the side handle (8).
• If necessary, set the drilling depth.
• Mark the spot where the hole is to be drilled.
• Place the drill bit on the spot and press the
ON/OFF-switch (1).
• To stop the tool, release the ON/OFF-switch (1).
Always switch off the tool when work is finished
and before unplugging.
Drilling with a core bit (fig. A)
• Turn the electronic speed and impact control dial
(2) to medium or high speed position.
• Set the mode selector lever (4) to the
„hammer drilling" position.
• Fit and adjust the side handle (8).
• Insert the appropriate core bit.
• Assemble the centerdrill into the core bit.
• Place the centerdrill on the spot and press the
ON/OFF-switch (1). Drill until the core penetrates
into the concrete approx. 1 cm.
• Stop drilling and remove the centerdrill. Place the
core bit back into the hole and continue drilling.
• When drilling through a structure thicker than
the depth of the core bit, break away the round
cylinder of concrete or core inside the bit at
regular intervals.
To avoid unwanted breaking away of concrete
around the hole, first drill a hole the diameter of
the centerdrill completely through the
structure. Then drill the cored hole halfway
from each side.
• To stop the tool, proceed as described above.
Chipping and chiselling (fig. A)
• Set the electronic speed and impact control dial (2).
• Select the type of operation – Turn the option
level (5) to "cut only".
• Insert the appropriate chisel and rotate it by hand
to lock it into one of 8 positions.
• Fit and adjust the side handle (8).
• Press the ON/OFF-switch (1) and start working.
• To stop the tool, proceed as described above.
Various types of SDS-max
available as an option.
Consult BERNER for further information on the
appropriate accessories.
Maintenance
Your BERNER Power Tool has been designed to
operate over a long period of time with a minimum
of maintenance. Continuous satisfactory operation
depends upon proper tool care and regular cleaning.
• The Rotary Hammer is not user-serviceable.
Take the tool to an authorized BERNER repair
agent as soon as the service indicator LED (3)
lights up.
Lubrication
Your power tool requires no additional lubrication.
Cleaning
Keep the ventilation slots clear and regularly
clean the housing with a soft cloth.
E N G L I S H
®
drill bits and chisels are
19