Bedienungsanleitung Bosch GNF 20 CA (Seite 28 von 163) (Deutsch, Englisch, Holländisch, Dänisch, Französisch, Italienisch, Portugiesisch, Spanisch, Türkisch, Schwedisch, Norwegisch, Finnisch)

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28 | English

1 609 929 K57 | (27.11.07) Bosch Power Tools

Reduced starting current

The electronic reduced starting current limits

the power consumption when switching the tool

on and enables operation from a 13 ampere

fuse.

Constant Electronic Control

Constant electronic control holds the speed

constant at no-load and under load, and ensures

uniform working performance.

Overload Protection

When overloaded, the motor comes to a stop.

Relieve the load on the machine immediately

and allow to cool down for approx. 30 seconds

at the highest no-load speed.

Restarting Protection (GNF 35 CA)

The restarting protection feature prevents un-

controlled restarting of the machine after an in-

terruption in the power supply.

To restart the operation, switch the On/Off

switch 10 to the Off position and start the ma-

chine again.

Note: Check the function of the restarting pro-

tection feature regularly by having the mains

plug pulled during operation and plugged in

again afterwards.

Working Advice

f Exercise caution when cutting slots in

structural walls; see Section “Information

on Structures ”.

f Do not strain the machine so heavily that it

comes to a standstill.

f Clamp the workpiece if it does not remain

stationary due to its own weight.

f The machine may only be used for dry cut-

ting.

– Adjust the cutting depth, see section “Pre-se-

lecting the Cutting Depth”. To compensate

inaccuracies that occur when breaking away

the fin, the cutting depth must be set approx.

3 mm deeper than the requested slot depth.

– Place the machine with the chaser rollers 7

on the surface to be worked. The cutting unit

must be in the uppermost position.

– Switch on the machine.

– Push the release button 3 upwards to release

the cutting unit. Slowly lower and plunge the

cutting unit into the material.

– Guide the machine with both handles, apply-

ing moderate feed, suited to the material be-

ing worked.

– The machine must always work in an up-

grinding motion. Otherwise, the danger ex-

ists of it being pushed uncontrolled out of

the cut. Guide the machine in the direction of

the working-direction arrow 8.

– The machine can be both pushed or pulled in

the cutting direction. Vertical slots can easily

be cut by pulling the machine from top to

bottom.

– After finishing the working procedure, swivel

the cutting unit out of the slot with the ma-

chine still running, until the cutting unit en-

gages in the uppermost position.

– Switch the power tool off.

Do not brake coasting diamond cutting discs by

applying sideward pressure.

f Diamond cutting discs become very hot dur-

ing operation; do not touch them until they

have cooled down.

Remove the remaining fin of the material with

the break-out tool 21.

Curved cuts are not possible, as the diamond

cutting discs could jam in the material.

When cutting through plate materials, ensure

that the materials are firmly backed on a surface

or supported.

OBJ_BUCH-126-001.book Page 28 Tuesday, November 27, 2007 9:54 AM

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