Manual Bosch GWS 17-150 S (page 31 of 437) (All languages)

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English | 31

The power tool must always

work in an up-grinding mo-

tion. Otherwise there is a

risk that it will be pushed

uncontrolled out of the cut.

For best results when cut-

ting profiles and rectangular

tubing, start at the smallest

cross section.

Cutting stone

uFor cutting stone with bonded cutting discs or dia-

mond cutting discs for concrete/stone, always use the

extraction guard for cutting with a cutting guide(32)

or the protective guard for cutting(10) or the protect-

ive guard for grinding (9) with a fitted cover for

cutting(11).

uProvide sufficient dust extraction when cutting stone.

uWear a dust mask.

uThe power tool may be used only for dry cutting/grind-

ing.

uWhen using the protective guard for cutting(10) , the

protective guard for grinding(9) or the protective

guard for grinding(9) with a fitted cover for

cutting(11) for cutting and grinding applications in

concrete or masonry, there is an increased dust load

and an increased risk of losing control of the power

tool, which can lead to kickback.

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

When using the extraction guard for cutting with a cutting

guide(32), the dust extractor must be approved for extract-

ing stone dust. Suitable dust extractors are available from

Bosch.

Switch on the power tool

and position it with the

front part of the cutting

guide on the workpiece.

Move the power tool with a

moderate feed motion that

is suited to the material be-

ing machined.

When cutting especially

hard materials such as con-

crete with a 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 dia-

mond cutting disc.

If this happens, stop cutting and allow the diamond cutting

disc to cool down by running the power tool for a short time

at maximum speed with no load.

If work is noticeably slower and with circular sparking, this

indicates that the diamond cutting disc has become blunt.

You can resharpen the disc by briefly cutting into abrasive

material (e.g. lime-sand brick).

Cutting other materials

uFor cutting materials such as plastic, composite ma-

terials, etc. with bonded cutting discs or Carbide Multi

Wheel cutting discs, always use the protective guard

for cutting(10) or the protective guard for

grinding(9) with a fitted cover for cutting (11). You

can achieve improved dust extraction by using the ex-

traction guard with a cutting guide(32).

Working with Diamond Annular Cutters

uOnly use dry diamond annular cutters.

uAlways fit the hand guard (24) when working with dia-

mond annular cutters.

Do not place the diamond annular cutter parallel to the work-

piece. Plunge it into the workpiece at an angle and in a circu-

lar motion. This will allow you to achieve optimal cooling and

ensure a longer tool life for the diamond annular cutter.

Information on structural design

Recesses in load-bearing walls are subject to country-spe-

cific regulations. These regulations must be observed under

all circumstances. Seek advice from the responsible struc-

tural engineer, architect or construction supervisor before

starting work.

Start-up

When operating the power tool using a mobile generator that

does not have sufficient reserve capacity or an adequate

voltage control system with inrush current boost converter,

loss of performance or atypical behaviour may occur upon

switch-on.

Please check the suitability of the power generator you are

using, particularly with regard to the mains voltage and fre-

quency.

uProducts that are only sold in AUS and NZ: Use a resid-

ual current device (RCD) with a nominal residual current

of 30 mA or less.

uPay attention to the mains voltage. The voltage of the

power source must match the voltage specified on the

rating plate of the power tool.

Switching on/off

To start the power tool, push the on/off switch (3) forward.

To lock the on/off switch (3) in position, push the on/off

switch (3) forward and down until it clicks into place.

To switch off the power tool, release the on/off switch (3);

or, if the switch is locked, briefly push the on/off switch (3)

backward and down and then release it.

uAlways check abrasive tools before using them. The

abrasive tool must be fitted properly and be able to

move freely. Carry out a test run for at least one

minute with no load. Do not use abrasive tools that are

damaged, run untrue or vibrate during use. Damaged

abrasive tools can burst apart and cause injuries.

Bosch Power Tools 1 609 92A 6A0 | (11.02.2022)

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Bosch GWS 17-150 S Manual

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