Dust/Chip Extraction; Starting Operation; Working Advice - Berner BCDH-5-1 Manual Original

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Inserting (see figure A)
Clean and lightly grease the shank end of the tool.
Insert the tool in a twisting manner into the tool holder
until it latches itself.
Check the latching by pulling the tool.
Removing (see figure B)
Push back the locking sleeve 2 and remove the tool.

Dust/Chip Extraction

Dusts from materials such as lead-containing coat-
ings, some wood types, minerals and metal can be
harmful to one's health. Touching or breathing-in
the dusts can cause allergic reactions and/or lead
to respiratory infections of the user or bystanders.
Certain dusts, such as oak or beech dust, are con-
sidered as carcinogenic, especially in connection
with wood-treatment additives (chromate, wood
preservative). Materials containing asbestos may
only be worked by specialists.
– Provide for good ventilation of the working
place.
– It is recommended to wear a P2 filter-class res-
pirator.
Observe the relevant regulations in your country
for the materials to be worked.
Operation

Starting Operation

Observe correct mains voltage! The voltage
of the power 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.
Switching On and Off
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 certain time.
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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 preselected
speed and impact rate nearly constant between no-
load and load conditions.
The maximum hammering capacity is achieved when
the thumbwheel 6 is set to position "6". For lower
speed settings, the hammering capacity is lower due
to technical reasons.
Select the speed with the thumbwheel 6 according to
the material.
When plugging the plug into the socket outlet or after
a power failure, the constant electronic control auto-
matically sets the highest speed and impact rate. This
ensures working at optimum performance despite too
low preadjustment of the thumbwheel 6.
The data in the following table are recommended val-
ues.
Application
Working roughcast/
light building materials
Removing tiles
Working brick
Working concrete
Changing the Chiselling Position (Vario-Lock)
The chisel can be locked in 12 positions. In this man-
ner, the optimum working position can be set for each
application.
Insert the chisel into the tool holder.
Push the chisel adjustment ring 3 forward and turn the
chisel to the required position with the chisel adjust-
ment ring 3.
Release the chisel adjustment ring 3 and turn the
chisel until it latches.

Working Advice

Vibration Damper
The integrated vibration damper in the main handle
and at the hammer mechanism reduces occurring
vibrations.
Thumb-
wheel 6
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