Bedienungsanleitung Bosch GNA 2.0 Professional (Seite 13 von 159) (Deutsch, Englisch, Holländisch, Dänisch, Französisch, Italienisch, Portugiesisch, Spanisch, Polnisch, Türkisch, Schwedisch, Norwegisch, Finnisch)

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English | 13

Bosch Power Tools 1 609 929 M22 | (8.10.07)

Operation

Starting Operation

f Observe correct mains voltage! The voltage

of the power 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.

Switching On and Off

To start the machine, push the On/Off switch 1

forward so that the “I” is indicated on the

switch.

To switch off the machine, push the On/Off

switch 1 toward the rear so that the “0” is indi-

cated on the switch.

Locking/Loosening the Die

For straight cuts, tighten the locking screw 3

using an Allen key (size 2.5 mm) in order to lock

the die 4.

For curved cuts, loosen the locking screw 3. The

die 4 can move freely now and adjusts to the di-

rection of the feed strength.

Working Advice

Apply the machine to the workpiece only when

switched on. Always hold the machine vertical to

the surface of the steel sheet and do not tilt it.

The cut takes place during the upward motion of

the punch. Guide the machine evenly and with

moderate feed in the cutting direction. A too high

feed rate significantly reduces the service life of

the cutting tools and can damage the machine.

If the punch should become wedged during cut-

ting, switch the machine off, relubricate the

punch and release the tension of the steel

sheet. Do not exert force, otherwise the punch

and die will become damaged.

f Wear protective gloves while working and

pay particular attention to the mains cable.

Sharp burrs develop at the cut steel sheet

and can cause injuries to the operator or

damage the mains cable.

f Exercise caution when handling the cutting

chips. The chips have sharp tips that can

cause injuries.

Maximum Steel Sheet Cutting Capacity

The maximum steel sheet cutting capacity d

max

depends on the strength properties of the ma-

terial to be cut.

The machine allows for straight and deformation-

free cutting of metal sheets to the following

thicknesses:

Lubricating/Cooling the Punch

To extend the service life of the punch 5, a lubri-

cating agent with good cooling properties (e.g.

cutting oil) should be used.

Apply a trail of lubricant beads onto the top side

of the metal sheet alongside the intended cut-

ting line. For long periods of continual use or for

work with high frictional wear (e.g. when cut-

ting aluminium), the cutting head should be

immersed into a container with lubricant in

regular intervals.

Cutting along a Cutting Mark or with a Guide

Straight cuts are carried out easier when the

machine is guided alongside a rule.

Contours can be cut by guiding the machine

along a template.

For inside cuts, pre-drilling a hole with a dia-

meter of 16 mm is necessary.

Material Max. strength

property

[N/mm

]

max

[mm]

Steel 400 2.0

600 1.4

800 1.0

Aluminium 200 2.5

OBJ_BUCH-236-002.book Page 13 Monday, October 8, 2007 11:54 AM

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