Bosch GBH Professional 2-28 D Originalbetriebsanleitung Seite 9

OBJ_BUCH-1232-004.book Page 9 Wednesday, April 20, 2011 1:00 PM
nameplate of the machine. Power tools marked with
230 V can also be operated with 220 V.
Use appropriate 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.
Firmly tighten the auxiliary handle, hold the machine
firmly with both hands while working and keep proper
footing and balance at all times. The machine is securely
guided with both hands.
Secure the workpiece. A workpiece clamped with clamp-
ing devices or in a vice is held more secure than by hand.
For drilling without impact in wood, metal, ceramic and
plastic as well as for screwdriving, tools without SDS-plus
are used (e.g., drills with cylindrical shank). For these
tools, a keyless chuck or a key type drill chuck are re-
quired.
GBH 2-28 DFV: Only use quick change chucks with
3 identification grooves (standard delivery scope) or
2 identification grooves (accessory/spare part) – see
figure 1, page 134.
– The quick change chuck is automatically locked. Check
the locking effect by pulling the quick change chuck.
Inserting SDS-plus Drilling Tools: Check the latching by
pulling the tool.
Replace a damaged dust protection cap immediately.
The dust protection cap largely prevents the penetration of
drilling dust into the tool holder during operation. When in-
serting the tool, pay attention that the dust protection cap
is not damaged.
Dusts from materials such as lead-containing coatings,
some wood types, minerals and metal can be harmful to
one's health and cause allergic reactions, lead to respi-
ratory infections and/or cancer. Materials containing as-
bestos may only be worked by specialists.
– As far as possible, use a dust extraction system suita-
ble for the material.
– Provide for good ventilation of the working place.
– It is recommended to wear a P2 filter-class respirator.
Observe the relevant regulations in your country for the
materials to be worked.
Prevent dust accumulation at the workplace. Dusts can
easily ignite.
If the application tool should become blocked, switch
the machine off. Loosen the application tool.
Before switching on the power tool, make sure that the
application tool moves freely. When switching on with a
blocked drilling tool, high torque reaction can occur.
Always wait until the machine has come to a complete
stop before placing it down. The tool insert can jam and
lead to loss of control over the power tool.
Bosch Power Tools
Symbols
The following symbols are important for reading and under-
standing the operating instructions. Please take note of the
symbols and their meaning. The correct interpretation of the
symbols will help you to use the machine in a better and safer
manner.
Symbol Meaning
GBH 2-28 D/
GBH 2-28 DV/
GBH 2-28 DFV: Rotary Hammer
Grey-marked area: Handle
(insulated gripping surface)
Article number
Read all safety warnings and all
instructions
Before any work on the machine itself,
pull the mains plug from the socket
outlet
Wear protective gloves
Wear ear protection.
Wear safety glasses/goggles
Movement direction
Reaction direction
Prohibited action
Permitted action
Next step of action
Right/left rotation
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