Berner BHD-4-1 - Page 16

16 | English
1 609 92A 1ES • 23.9.15
– Insert the SDS-plus drilling tool to the stop into
the SDS-plus tool holder 1. Otherwise, the mov-
ability of the SDS-plus drilling tool can lead to in-
correct adjustment of the drilling depth.
– Pull out the depth stop until the distance be-
tween the tip of the drill bit and the tip of the
depth stop corresponds with the desired drilling
depth X.
The knurled surface of the depth stop 11 must
face downward.
Selecting the Tool Holder
For hammer drilling, SDS-plus drilling tools that
can be inserted into the SDS-plus tool holder 1 are
required.
For drilling without impact in wood, metal, ceramic
and plastic as well as for screwdriving and tapping,
use non-SDS-plus drilling tools (e. g., drill bits with
cylindrical shank). A keyless drill chuck is required
for such drilling tools.
Note: Do not use tools without SDS-plus for ham-
mer drilling or chiselling! Tools without SDS-plus
and their drill chucks are damaged by hammer
drilling or chiselling.
The SDS-plus tool holder 1 can easily be ex-
changed against the quick change keyless chuck
13.
Changing the Tool Holder
Dismounting the SDS-plus Tool Holder or the
Quick change keyless chuck (see figure B)
– Pull the lock ring of the tool holder 4 firmly in the
direction of the arrow, hold it in this position and
pull off the tool holder 1 or the keyless replace-
ment chuck 13 toward the front.
After removing, protect the tool holder 1 or the
quick change keyless chuck 13 against contamina-
tion. Lightly lubricate the engaging grooves, if re-
quired.
Mounting the SDS-plus Tool Holder or the Quick
change keyless chuck
 Use only model-specific original equipment
and pay attention to the number of identifica-
tion grooves .Only quick-change chucks with
two identification grooves are permitted.
When an unsuitable quick-change chuck is
used, the application tool could fall out during
operation.
– Grasp the tool holder 1 or the keyless replace-
ment chuck 13 completely with your hand. Slide
the tool holder 1 or the keyless replacement
chuck 13 with a turning motion onto the drill
chuck mounting until a distinct latching noice is
heard.
– The tool holder 1 or the quick change keyless
chuck 13 is automatically locked. Check the
locking effect by pulling the tool holder.
Changing the Tool
With the SDS-plus tool holder, simple and conven-
ient tool changing is possible without additional
aids.
As a requirement of the system, the SDS-plus drill-
ing tool can move freely. This causes a certain ra-
dial run-out at no-load, which has no effect on the
accuracy of the drill hole, as the drill bit centres it-
self upon drilling.
The dust protection cap 2 largely prevents the en-
try of drilling dust into the tool holder during oper-
ation. When inserting the tool, take care that the
dust protection cap 2 is not damaged.
 A damaged dust protection cap should be
changed immediately. We recommend having
this carried out by an after-sales service.
Inserting SDS-plus Drilling Tools (see figure C)
– 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 SDS-plus Drilling Tools (see figure D)
– Push back the locking sleeve 3 and remove the
tool.
Inserting Drilling Tools without SDS-plus
(see figure E)
Note: Do not use tools without SDS-plus for ham-
mer drilling or chiselling! Tools without SDS-plus
and their drill chucks are damaged by hammer
drilling or chiselling.
– Insert the quick change keyless chuck 13.
– Firmly hold the retaining ring of the quick change
keyless chuck 13. Open the quick change key-
less chuck by turning the front sleeve in the di-
rection of the symbol “ ”.
– Insert the drilling tool into the quick change key-
less chuck 13. Firmly hold the retaining ring of
the quick change keyless chuck 13 and turn the
front sleeve in the direction of the symbol
“”.
– Check the tight seating by pulling the tool.
Note: If the tool holder was opened to the stop,
then the latching noise possibly may be heard
while closing the tool holder and the tool holder will
not close.
In this case, turn the front sleeve 14 once in the op-
posite direction of the arrow. Afterwards, the tool
holder can be closed (tightened) again.
– Turn the mode selector switch 5 to the “drilling”
position.
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