Bosch GBH 2-28 - Инструкция по эксплуатации - Страница 10

10

 | English 

1 609 92A 1EJ | (12.5.16)

Bosch Power Tools

Additional Safety and Working In-
structions



Observe correct mains voltage! The voltage of the pow-
er 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.



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.



To save energy, only switch the power tool on when using 
it.



For drilling without impact in wood, metal, ceramic and 
plastic as well as for screwdriving, tools without SDS-plus 
are used (e. g., drill bits with cylindrical shank). For these 
tools, a keyless chuck or a key type drill chuck are re-
quired.



GBH 2-28 F: 

Only use quick change chucks with 

3 identi-

fication grooves

 (standard delivery scope) or 

2 identifi-

cation grooves

 (accessory/spare part)  –  see figure 1, 

page 184.

–

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.



Dust 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 res-
piratory infections and/or cancer.

 Materials containing 

asbestos may only be worked by specialists.

–

As far as possible, use a dust extraction system suitable 
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. 

Dust 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.



When working with the machine, always hold it firmly 
with both hands and provide for a secure stance. 

The 

power tool is guided more secure with both hands.



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.



The rapid shut-off feature (KickBack Control) provides 
better control over the power tool to increase user pro-
tection compared to power tools that do not have Kick-
Back Control. The power tool will switch off if it sud-
denly and unforeseeably rotates around the drilling 
axis.

To 

restart the machine

, release the On/Off switch and 

then actuate again.

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
GBH 2-28 F: 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 out-
let

Wear protective gloves

Always wear ear protection.

Wear safety glasses/goggles

KickBack Control

Keyless drill chuck

OBJ_BUCH-1232-006.book  Page 10  Thursday, May 12, 2016  1:14 PM