Bosch GBH 12-52 D, Original Instructions Manual

Page: 12 / 185

12 | English
u
Store idle power tools out of the reach of children and
do not allow persons unfamiliar with the power tool or
these instructions to operate the power tool.
Power
tools are dangerous in the hands of untrained users.
u
Maintain power tools and accessories. Check for mis-
alignment or binding of moving parts, breakage of
parts and any other condition that may affect the
power tool’s operation. If damaged, have the power
tool repaired before use.
Many accidents are caused by
poorly maintained power tools.
u
Keep cutting tools sharp and clean. Properly main-
tained cutting tools with sharp cutting edges are less
likely to bind and are easier to control.
u
Use the power tool, accessories and tool bits etc. in
accordance with these instructions, taking into ac-
count the working conditions and the work to be per-
formed.
Use of the power tool for operations different
from those intended could result in a hazardous situation.
u
Keep handles and grasping surfaces dry, clean and
free from oil and grease.
Slippery handles and grasping
surfaces do not allow for safe handling and control of the
tool in unexpected situations.
Service
u
Have your power tool serviced by a qualified repair
person using only identical replacement parts.
This
will ensure that the safety of the power tool is maintained.
Hammer Safety Warnings
Safety instructions for all operations
u
Wear ear protectors. Exposure to noise can cause hear-
ing loss.
u
Use auxiliary handle(s), if supplied with the tool. Loss
of control can cause personal injury.
u
Hold the power tool by insulated gripping surfaces,
when performing an operation where the cutting ac-
cessory may contact hidden wiring or its own cord.
Cutting accessory contacting a "live" wire may make ex-
posed metal parts of the power tool "live" and could give
the operator an electric shock.
Safety instructions when using long drill bits with rotary
hammers
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Always start drilling at low speed and with the bit tip
in contact with the workpiece.
At higher speeds, the bit
is likely to bend if allowed to rotate freely without contact-
ing the workpiece, resulting in personal injury.
u
Apply pressure only in direct line with the bit and do
not apply excessive pressure.
Bits can bend, causing
breakage or loss of control, resulting in personal injury.
Additional safety information
u
Use suitable detectors to determine if utility lines are
hidden in the work area or call the local utility com-
pany for assistance.
Contact with electric lines can lead
to fire and electric shock. Damaging a gas line can lead to
explosion. Penetrating a water line causes property dam-
age or may cause an electric shock.
u
Always wait until the power tool has come to a com-
plete stop before placing it down.
The application tool
can jam and cause you to lose control of the power tool.
u
Secure the workpiece. A workpiece clamped with
clamping devices or in a vice is held more secure than by
hand.
Products sold in GB only:
Your product is fitted with an BS 1363/A approved electric
plug with internal fuse (ASTA approved to BS 1362).
If the plug is not suitable for your socket outlets, it should be
cut off and an appropriate plug fitted in its place by an au-
thorised customer service agent. The replacement plug
should have the same fuse rating as the original plug.
The severed plug must be disposed of to avoid a possible
shock hazard and should never be inserted into a mains
socket elsewhere.
u
Do not touch any application tools or adjacent housing
components shortly after operation.
These can become
very hot during operation and cause burns.
u
The application tool may jam during drilling. Make
sure you have a stable footing and hold the power tool
firmly with both hands.
Otherwise you could lose con-
trol of the power tool.
u
Take care when carrying out demolition work using
the chisel.
Falling fragments of the demolition material
could injure you or any bystanders.
u
Hold the power tool firmly with both hands and make
sure you have a stable footing.
The power tool can be
more securely guided with both hands.
Product Description and
Specifications
Read all the safety and general instructions.
Failure to observe the safety and general in-
structions may result in electric shock, fire
and/or serious injury.
Please observe the illustrations at the beginning of this oper-
ating manual.
Intended Use
The power tool is intended for hammer drilling in concrete,
masonry and stone, as well as for chiselling work.
Product Features
The numbering of the product features refers to the diagram
of the power tool on the graphics page.
(1) Dust protection cap
(2) Locking sleeve
(3) Mode selector switch
(4) Vibration damping ( GBH 12-52 DV )
(5) Handle (insulated gripping surface)
(6) On/off switch
(7) Speed preselection thumbwheel
1 609 92A 747 | (25.05.2022) Bosch Power Tools