Manual Bosch GBH 5 DCE (page 19 of 229) (English, German, Dutch, Danish, French, Italian, Polish, Portuguese, Swedish, Turkish, Spanish, Norwegian, Finnish)

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English | 19

Bosch Power Tools 1 609 929 W79 | (9/7/10)

Switching On/Off in Chiselling Mode

–To start the machine, press the On/Off

switch 5 at the top (I) until it locks.

–To switch off the machine, press the On/Off

switch 5 at the bottom (0) and release it.

For low temperatures, the power tool reaches

the full hammer/impact capacity only after a cer-

tain time.

Setting the Speed/Impact Rate

The electronic control enables stepless speed

and impact preselection in accordance with the

material to be worked.

The constant electronic control keeps the prese-

lected speed and impact rate nearly constant

between no-load and load conditions.

When plugging the plug into the socket outlet or

after a power failure, the constant electronic

control automatically sets the highest speed

and impact rate. This ensures working at opti-

mum performance despite too low preadjust-

ment of the thumbwheel 7.

– Select the impact rate with the thumbwheel

7 according to the material.

The data in the following table are recommend-

ed values.

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 3 to the

“Vario-Lock” position (see “Setting the Oper-

ating Mode”, page 18).

– Turn the tool holder to the desired chiselling

position.

– Turn the mode selector switch 3 to the “chis-

elling” position. The tool holder is now

locked.

f The mode selector switch 3 must always be

locked in the “Chiselling” position when

chiselling.

Working Advice

f Before any work on the machine itself, pull

the mains plug.

Vibration Damper

The integrated vibration damper reduces occur-

ring vibrations.

The soft grip handle increases the safety against

slipping off and thus provides for a better grip

and handling of the power tool.

Application Thumbwheel

Position

Working roughcast/light

building materials

Removing tiles

Working brick

Working concrete

OBJ_BUCH-491-005.book Page 19 Friday, July 9, 2010 3:27 PM

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Bosch GBH 5 DCE Manual

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