Bedienungsanleitung Bosch gws 1400 professional (Seite 24 von 301) (Deutsch, Englisch, Holländisch, Dänisch, Französisch, Italienisch, Portugiesisch, Spanisch, Polnisch, Türkisch, Schwedisch, Norwegisch, Finnisch)

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English | 251 609 929 K94 • 20.12.06

Note: When not using for extended periods, pull the

mains plug out of the socket outlet. When the mains

plug is inserted and mains voltage is given, the power

tool, even when switched off, still consumes a low

amount of current.

Rough Grinding

f Never use a cutting disc for roughing.

The best roughing results are achieved when setting

the machine at an angle of 30° to 40°. Move the

machine back and forth with moderate pressure. In

this manner, the workpiece will not become too hot,

does not discolour and no grooves are formed.

Flap Disc

With the flap disc (accessory), curved surfaces and

profiles can be worked.

Flap discs have a considerably higher service life,

lower noise levels and lower sanding temperatures

than conventional sanding sheets.

Cutting Metal

f For cutting metal, always work with the pro-

tection guard for cutting 12.

When cutting, work with moderate feed, adapted to

the material being cut. Do not exert pressure onto the

cutting disc, tilt or oscillate the machine.

Do not reduce the speed of running down cutting

discs by applying sideward pressure.

The machine must

always work in an up-

grinding motion. Oth-

erwise, the danger

exists of it being

pushed uncon-

trolled out of the cut.

When cutting profiles

and square bar, it is

best to start at the

smallest cross sec-

tion.

Cutting Stone

f For cutting stone, always work with the cut-

ting guide with dust extraction protection

guard 19.

f The machine may be used only for dry cut-

ting/grinding.

For cutting stone, it is best to use a diamond cutting

disc. As a safety measure against jamming, the cutting

guide with dust extraction protection guard 19 must

be used.

Operate the machine only with dust extraction and

additionally wear a dust protection mask.

The vacuum cleaner must be approved for the extrac-

tion of masonry dust. Bosch provides suitable vacuum

cleaners.

Switch on the

machine and place

the front part of the

cutting guide on the

workpiece. Slide the

machine with moder-

ate feed, adapted to

the material to be

worked.

For cutting expecially hard material, e. g., concrete

with high pebble content, the diamond cutting disc

can overheat and become damaged as a result. This

is clearly indicated by circular sparking, rotating with

the diamond cutting disc.

In this case, interrupt the cutting process and allow

the diamond cutting disc to cool by running the

machine for a short time at maximum speed with no

load.

Noticeable decreasing work progress and circular

sparking are indications of a diamond cutting disc that

has become dull. Briefly cutting into abrasive material

(e. g. lime-sand brick) can resharpen the disc again.

Information on Structures

Slots in structural walls are subject to the Standard

DIN 1053 Part 1, or country-specific regulations.

These regulations are to be observed under all cir-

cumstances. Before beginning work, consult the

responsible structural engineer, architect or the con-

struction supervisor.

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 In extreme working conditions, conductive

dust can accumulate in the interior of the

machine when working with metal. The pro-

tective insulation of the machine can be

degraded. The use of a stationary extraction

system is recommended in such cases as

well as frequently blowing out the ventila-

tion slots and installing a residual current

device (RCD).

OBJ_BUCH-310-001.book Page 25 Wednesday, December 20, 2006 9:31 AM

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