Bosch GBH 4 32 DFR S - Инструкция по эксплуатации - Страница 23

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23

Bosch Power Tools

1 619 929 774 | (2.3.09)

Reversing the Rotational Direction

f

Actuate the rotational direction switch 8 
only when the machine is at a standstill.

The rotational direction switch 

8

 is used to re-

verse the rotational direction of the machine.

Right rotation: 

Turn the rotational direction 

switch 

8

 to the stop in the position 

.

Left rotation: 

Turn the rotational direction 

switch 

8

 to the stop in the position 

.

Set the direction of rotation for hammer drilling, 
drilling and chiselling always to right rotation.

Switching On and Off

To 

start

 the machine, press the On/Off switch 

7

and keep it pressed.
To switch off the machine, 

release

 the On/Off 

switch 

7

.

For low temperatures, the power tool reaches 
the full hammer/impact capacity only after a cer-
tain time.

Setting the Speed/Impact Rate

The speed/impact rate of the switched on pow-
er tool can be variably adjusted, depending on 
how far the On/Off switch 

7

 is pressed.

Light pressure on the On/Off switch 

7

 results in 

low speed/impact rate. Further pressure on the 
switch increases the speed/impact rate.

Safety Clutch

f

If the tool insert becomes caught or 
jammed, the drive to the drill spindle is in-
terrupted. Because of the forces that occur, 
always hold the power tool firmly with both 
hands and provide for a secure stance.

f

If the power tool jams, switch the machine 
off and loosen the tool insert. When switch-
ing the machine on with the drilling tool 
jammed, high reaction torques can occur.

Changing the Chiselling Position (Vario-Lock)

The chisel can be locked in 12 positions. In this 
manner, the optimum working position can be 
set for each application.
Insert the chisel into the tool holder.

Turn the mode selector switch 

5

 to the “Vario-

Lock” position (see “Setting the Operating 
Mode”, page 22).
Turn the tool holder to the desired chiselling po-
sition.
Turn the mode selector switch 

5

 to the “chisel-

ling” position. The tool holder is now locked.
For chiselling, set the rotation direction to right 
rotation.

Working Advice

Vibration Damper

The integrated vibration damper reduces occur-
ring vibrations.

Maintenance and Service

Maintenance and Cleaning

f

Before any work on the machine itself, pull 
the mains plug.

f

For safe and proper working, always keep 
the machine and ventilation slots clean.

f

A damaged dust protection cap should be 
changed immediately. We recommend hav-
ing this carried out by an after-sales serv-
ice.

If the machine should fail despite the care taken 
in manufacturing and testing procedures, repair 
should be carried out by an after-sales service 
centre for Bosch power tools.
In all correspondence and spare parts order, 
please always include the 10-digit article 
number given on the type plate of the machine.

OBJ_BUCH-337-002.book  Page 23  Monday, March 2, 2009  4:19 PM