Bosch GWS 24-230 JVX Professional: English

OBJ_BUCH-769-008.book Page 17 Thursday, August 1, 2013 9:59 AM

English | 17

 Do not use a damaged accessory. Before each use in-

For example, if an abrasive wheel is snagged or pinched by

spect the accessory such as abrasive wheels for chips

the workpiece, the edge of the wheel that is entering into

and cracks, backing pad for cracks, tear or excess

the pinch point can dig into the surface of the material

wear, wire brush for loose or cracked wires. If power

causing the wheel to climb out or kick out. The wheel may

tool or accessory is dropped, inspect for damage or in-

either jump toward or away from the operator, depending

stall an undamaged accessory. After inspecting and in-

on direction of the wheel’s movement at the point of pinch-

stalling an accessory, position yourself and bystanders

ing. Abrasive wheels may also break under these condi-

away from the plane of the rotating accessory and run

tions.

the power tool at maximum no-load speed for one min-

Kickback is the result of power tool misuse and/or incor-

ute. Damaged accessories will normally break apart during

rect operating procedures or conditions and can be avoid-

this test time.

ed by taking proper precautions as given below.

 Wear personal protective equipment. Depending on

 Maintain a firm grip on the power tool and position your

application, use face shield, safety goggles or safety

body and arm to allow you to resist kickback forces. Al-

glasses. As appropriate, wear dust mask, hearing pro-

ways use auxiliary handle, if provided, for maximum

tectors, gloves and shop apron capable of stopping

control over kickback or torque reaction during

small abrasive or workpiece fragments. The eye protec-

start-up. The operator can control torque reactions or

tion must be capable of stopping flying debris generated

kickback forces, if proper precautions are taken.

by various operations. The dust mask or respirator must be

 Never place your hand near the rotating accessory. Ac-

capable of filtrating particles generated by your operation.

cessory may kickback over your hand.

Prolonged exposure to high intensity noise may cause

 Do not position your body in the area where power tool

hearing loss.

will move if kickback occurs. Kickback will propel the

 Keep bystanders a safe distance away from work area.

tool in direction opposite to the wheel’s movement at the

Anyone entering the work area must wear personal

point of snagging.

protective equipment. Fragments of workpiece or of a

 Use special care when working corners, sharp edges,

broken accessory may fly away and cause injury beyond

etc. Avoid bouncing and snagging the accessory. Cor-

immediate area of operation.

ners, sharp edges or bouncing have a tendency to snag the

 Hold the power tool by insulated gripping surfaces on-

rotating accessory and cause loss of control or kickback.

ly, when performing an operation where the cutting ac-

 Do not attach a saw chain woodcarving blade or

cessory may contact hidden wiring or its own cord. Cut-

toothed saw blade. Such blades create frequent kickback

ting accessory contacting a “live” wire may make exposed

and loss of control.

metal parts of the power tool “live” and could give the op-

erator an electric shock.

Safety warnings specific for Grinding and Abrasive

 Position the cord clear of the spinning accessory. If you

Cutting-Off operations

lose control, the cord may be cut or snagged and your hand

 Use only wheel types that are recommended for your

or arm may be pulled into the spinning wheel.

power tool and the specific guard designed for the se-

lected wheel. Wheels for which the power tool was not de-

 Never lay the power tool down until the accessory has

signed cannot be adequately guarded and are unsafe.

come to a complete stop. The spinning wheel may grab

the surface and pull the power tool out of your control.

 The grinding surface of the centre depressed wheels

must be mounted below the plane of the guard lip. An

 Do not run the power tool while carrying it at your side.

improperly mounted wheel that projects through the plane

Accidental contact with the spinning accessory could snag

of the guard lip cannot be adequately protected.

your clothing, pulling the accessory into your body.

 The guard must be securely attached to the power tool

 Regularly clean the power tool’s air vents. The motor’s

and positioned for maximum safety, so the least

fan will draw the dust inside the housing and excessive ac-

amount of wheel is exposed towards the operator. The

cumulation of powdered metal may cause electrical haz-

guard helps to protect operator from broken wheel frag-

ards.

ments, accidental contact with wheel and sparks that

 Do not operate the power tool near flammable materi-

could ignite clothing.

als. Sparks could ignite these materials.

 Wheels must be used only for recommended applica-

 Do not use accessories that require liquid coolants. Us-

tions. For example: do not grind with the side of the

ing water or other liquid coolants may result in electrocu-

cut-off wheel. Abrasive cut-off wheels are intended for

tion or shock.

peripheral grinding; side forces applied to these wheels

Kickback and related warnings

may cause them to shatter.

 Kickback is a sudden reaction to a pinched or snagged ro-

 Always use undamaged wheel flanges that are of cor-

tating wheel, backing pad, brush or any other accessory.

rect size and shape for your selected wheel. Proper

Pinching or snagging causes rapid stalling of the rotating

wheel flanges support the wheel thus reducing the possi-

accessory which in turn causes the uncontrolled power

bility of wheel breakage. Flanges for cut-off wheels may be

tool to be forced in the direction opposite of the accesso-

different from grinding wheel flanges.

ry’s rotation at the point of the binding.

Bosch Power Tools 1 609 92A 0B2 | (1.8.13)

OBJ_BUCH-769-008.book Page 18 Thursday, August 1, 2013 9:59 AM

18 | English

 Do not use worn down reinforced wheels from larger

Additional safety warnings

power tools. Wheels intended for larger power tools are

Wear safety goggles.

not suitable for the higher speed of a smaller tool and may

burst.

Additional safety warnings specific for abrasive cutting

off operations

 Do not “jam” the cut-off wheel or apply excessive pres-

sure. Do not attempt to make an excessive depth of cut.

 Use suitable detectors to determine if utility lines are

Overstressing the wheel increases the loading and suscep-

hidden in the work area or call the local utility company

tibility to twisting or binding of the wheel in the cut and the

for assistance. Contact with electric lines can lead to fire

possibility of kickback or wheel breakage.

and electric shock. Damaging a gas line can lead to explo-

sion. Penetrating a water line causes property damage or

 Do not position your body in line with and behind the

may cause an electric shock.

rotating wheel. When the wheel, at the point of operation,

is moving away from your body, the possible kickback may

 Release the On/Off switch and set it to the off position

propel the spinning wheel and the power tool directly at

when the power supply is interrupted, e. g., in case of a

you.

power failure or when the mains plug is pulled. This pre-

vents uncontrolled restarting.

 When wheel is binding or when interrupting a cut for

any reason, switch off the power tool and hold the pow-

 Do not touch grinding and cutting discs before they

er tool motionless until the wheel comes to a complete

have cooled down. The discs can become very hot while

stop. Never attempt to remove the cut-off wheel from

working.

the cut while the wheel is in motion otherwise kickback

 Secure the workpiece. A workpiece clamped with clamp-

may occur. Investigate and take corrective action to elimi-

ing devices or in a vice is held more secure than by hand.

nate the cause of wheel binding.

Products sold in GB only: Your product is fitted with an

 Do not restart the cutting operation in the workpiece.

BS 1363/A approved electric plug with internal fuse (ASTA

Let the wheel reach full speed and carefully re-enter

approved to BS 1362).

the cut. The wheel may bind, walk up or kickback if the

If the plug is not suitable for your socket outlets, it should be

power tool is restarted in the workpiece.

cut off and an appropriate plug fitted in its place by an author-

 Support panels or any oversized workpiece to minimize

ised customer service agent. The replacement plug should

the risk of wheel pinching and kickback. Large work-

have the same fuse rating as the original plug.

pieces tend to sag under their own weight. Supports must

The severed plug must be disposed of to avoid a possible

be placed under the workpiece near the line of cut and near

shock hazard and should never be inserted into a mains sock-

the edge of the workpiece on both sides of the wheel.

et elsewhere.

Products sold in AUS and NZ only: Use a residual current de-

 Use extra caution when making a “pocket cut” into ex-

vice (RCD) with a rated residual current of 30 mA or less.

isting walls or other blind areas. The protruding wheel

may cut gas or water pipes, electrical wiring or objects that

can cause kickback.

Product Description and Specifica-

Safety warnings specific for sanding operations

tions

 Do not use excessively oversized sanding disc paper.

Read all safety warnings and all instruc-

Follow manufacturers recommendations, when select-

tions. Failure to follow the warnings and in-

ing sanding paper. Larger sanding paper extending be-

structions may result in electric shock, fire

yond the sanding pad presents a laceration hazard and

and/or serious injury.

may cause snagging, tearing of the disc, or kickback.

Safety warnings specific for wire brushing operations

While reading the operating instructions, unfold the graphics

 Be aware that wire bristles are thrown by the brush

page for the machine and leave it open.

even during ordinary operation. Do not overstress the

wires by applying excessive load to the brush. The wire

Intended Use

bristles can easily penetrate light clothing and/or skin.

The machine is intended for cutting, roughing and brushing of

 If the use of a guard is recommended for wire brushing,

metal and stone materials without the use of water.

do not allow any interference of the wire wheel or

For cutting with bonded abrasives, a special cutting guard

brush with the guard. Wire wheel or brush may expand in

(accessory) must be used.

diameter due to work load and centrifugal forces.

When cutting in stone, provide for sufficient dust extraction.

With approved sanding tools, the machine can be used for

sanding with sanding discs.

1 609 92A 0B2 | (1.8.13) Bosch Power Tools

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English | 19

Product Features

13 Quick-clamping nut *

The numbering of the product features refers to the illustra-

14 Carbide grinding head*

tion of the machine on the graphics page.

15 Protection guard for cutting*

1 Spindle lock button

16 Cutting disc*

2 Vibration damper

17 Hand guard**

3 On/Off switch

18 Rubber sanding plate*

4 Auxiliary handle (insulated gripping surface)

19 Sanding sheet*

5 Grinder spindle

20 Round nut*

6 Protection guard for grinding

21 Cup brush*

7 Encoding key

22 Cutting guide with dust extraction protection guard *

8 Clamping lever for protection guard

23 Diamond cutting disc*

9 Screw for adjustment of protection guard

24 Handle (insulated gripping surface)

10 Mounting flange with O-ring

*Accessories shown or described are not part of the standard de-

livery scope of the product. A complete overview of accessories

11 Grinding wheel*

can be found in our accessories program.

12 Clamping nut

Technical Data

Angle Grinder GWS ... 24-230 JVX 24-230 JVX

Article number

3 601 ... H64 Z..

H64 U..

H64 5..

Rated power input W24002400

Output power

W16001600

-1

Rated speed

min

6500 6500

Grinding disc diameter, max.

mm 230 230

Thread of grinder spindle

M 14 M 14

Thread length (max.) of grinder spindle

mm 18 18

Restarting Protection

– 

Reduced starting current

 

Rotatable main handle

 

Run-on Brake

 

Weight according to EPTA-Procedure 01/2003

– with vibration-damping auxiliary handle

kg

6.5

6.6

– with standard-auxiliary handle

kg

6.4

6.5

Protection class

/II /II

The values given are valid for a nominal voltage [U] of 230 V. For different voltages and models for specific countries, these values can vary.

Only for power tools without reduced starting current: Starting cycles generate brief voltage drops. Interference with other equipment/machines may

occur in case of unfavourable mains system conditions. Malfunctions are not to be expected for system impedances below 0.25 ohm.

Noise/Vibration Information

Measured sound values determined according to EN 60745.

Typically the A-weighted noise levels of the product are: Sound pressure level 93 dB(A); Sound power level 104 dB(A).

Uncertainty K=3 dB.

Wear hearing protection!

3 601 ... H64 Z.. H64 5.. H64 U..

Vibration total values a

h

(triax vector sum) and uncertainty K determined accord-

ing to EN 60745:

Surface grinding:

a

h

m/s

2

6.5

6.5

6.5

K

m/s

2

1.5

1.5

1.5

Disk sanding:

a

h

m/s

2

3.5

3.5

3.5

K

m/s

2

1.5

1.5

1.5

Bosch Power Tools 1 609 92A 0B2 | (1.8.13)

OBJ_BUCH-769-008.book Page 20 Thursday, August 1, 2013 9:59 AM

20 | English

The vibration emission level given in this information sheet

The tightening tension of the clamp from the protection guard

has been measured in accordance with a standardised test

6 can be changed by loosening or tightening the adjustment

given in EN 60745 and may be used to compare one tool with

screw 9. Ensure that the protection guard 6 is tightly seated

another. It may be used for a preliminary assessment of expo-

and check regularly.

sure.

Note: The encoding keys on the protection guard 6 ensure

The declared vibration emission level represents the main ap-

that only a protection guard that fits the machine type can be

plications of the tool. However if the tool is used for different

mounted.

applications, with different accessories or poorly maintained,

the vibration emission may differ. This may significantly in-

Protection Guard for Cutting

crease the exposure level over the total working period.

 For cutting with bonded abrasives, always use the pro-

An estimation of the level of exposure to vibration should also

tection guard for cutting 15.

take into account the times when the tool is switched off or

 Provide for sufficient dust extraction when cutting

when it is running but not actually doing the job. This may sig-

stone.

nificantly reduce the exposure level over the total working pe-

The protection guard for cutting 15 is mounted in the same

riod.

manner as the protection guard for grinding 6.

Identify additional safety measures to protect the operator

from the effects of vibration such as: maintain the tool and the

Cutting Guide with Dust Extraction Protection Guard

accessories, keep hands warm, organise work patterns.

The cutting guide with dust extraction protection guard 22 is

mounted in the same manner as the protection guard for

Declaration of Conformity

grinding 6.

We declare under our sole responsibility that the product de-

Auxiliary Handle

scribed under “Technical Data” is in conformity with the fol-

 Operate your machine only with the auxiliary handle 4.

lowing standards or standardization documents: EN 60745

according to the provisions of the directives 2011/65/EU,

Screw the auxiliary handle 4 on the right or left of the machine

2004/108/EC, 2006/42/EC.

head depending on the working method.

Technical file (2006/42/EC) at:

Vibration Damper

Robert Bosch GmbH, PT/ETM9,

D-70745 Leinfelden-Echterdingen

Henk Becker

Helmut Heinzelmann

Executive Vice President

Head of Product Certification

The integrated vibration damper reduces occurring vibra-

Engineering

PT/ETM9

tions.

 Do not continue to use the power tool when the damp-

ing element is damaged.

Hand Guard

Robert Bosch GmbH, Power Tools Division

 For operations with the rubber sanding plate 18 or with

D-70745 Leinfelden-Echterdingen

the cup brush/wheel brush/flap disc, always mount the

20.06.2013

hand guard 17.

The hand guard 17 is fastened with the auxiliary handle 4.

Assembly

Mounting the Grinding Tools

Mounting the Protective Devices

 Before any work on the machine itself, pull the mains

 Before any work on the machine itself, pull the mains

plug.

plug.

 Do not touch grinding and cutting discs before they

Note: After breakage of the grinding disc during operation or

have cooled down. The discs can become very hot while

damage to the holding fixtures on the protection guard/power

working.

tool, the machine must promptly be sent to an after-sales ser-

Note: It is recommended to use the quick-clamping nut 13.

vice agent for maintenance for addresses, see section “After-

When using clamping nut 12, an increased expenditure of

sales Service and Application Service”.

force must be taken into account when loosening the clamp-

Protection Guard for Grinding

ing nut.

Release the clamping lever 8. Place the protection guard 6

Clean the grinder spindle 5 and all parts to be mounted.

with the encoding key 7 engaging into the groove on the spin-

For clamping and loosening the grinding tools, lock the grind-

dle collar until the shoulder of the protection guard is seated

er spindle with the spindle lock button 1.

against the flange of the power tool, and turn the protection

 Actuate the spindle lock button only when the grinder

guard 6 to the requested position. Lock the clamping lever 8.

spindle is at a standstill. Otherwise, the machine may be-

 Adjust the protection guard 6 in such a manner that

come damaged.

sparking is prevented in the direction of the operator.

1 609 92A 0B2 | (1.8.13) Bosch Power Tools

English | 21

Quick-clamping Nut

A plastic part (O-ring) is fitted around

With the quick-clamping nut 13, grinding tools can be mount-

the centring collar of mounting flange

ed without additional tools.

10. If the O-ring is missing or dam-

aged, the mounting flange 10 must be

 Use only a flawless, undamaged quick-clamping nut 13.

replaced before resuming operation.

When screwing on, pay attention that the side of the

quick-clamping nut 13 with printing does not face the

grinding disc; the arrow must point to the index mark 25.

Lock the grinder spindle with

Flap Disc

the spindle lock button 1. To

 For operations with the flap disc, always mount the

tighten the quick-clamping

hand guard 17.

nut, firmly turn the grinding

disc in clockwise direction.

Rubber Sanding Plate

 For operations with the rubber sanding plate 18,

always mount the hand guard 17.

See graphics page for the mounting sequence.

Note: When loosening the round nut 20, an increased ex-

penditure of force must be taken into account.

Cup Brush/Disc Brush

 For operations with the cup brush/wheel brush, always

mount the hand guard 17.

A properly attached, undam-

See graphics page for the mounting sequence.

aged quick-clamping nut can

be loosened by hand when

The cup brush/disc brush must be able to be screwed onto

turning the knurled ring in an-

the grinder spindle until it rests firmly against the grinder

ticlockwise direction.

spindle flange at the end of the grinder spindle threads. Tight-

Never loosen a tight quick-

en the cup brush/disc brush with an open-end spanner.

clamping nut with pliers. Al-

Note: When loosening the grinding tool, an increased expend-

ways use the two-pin span-

iture of force must be taken into account.

ner. Insert the two-pin span-

ner as shown in the

Approved Grinding Tools

illustration.

All grinding tools mentioned in these operating instructions

can be used.

The permissible speed [min

-1

] or the circumferential speed

Grinding/Cutting Disc

[m/s] of the grinding tools used must at least match the values

Pay attention to the dimensions of the grinding tools. The

given in the table.

mounting hole diameter must fit the mounting flange without

Therefore, observe the permissible rotational/circumferen-

play. Do not use reducers or adapters.

tial speed on the label of the grinding tool.

When using diamond cutting discs, pay attention that the di-

rection-of-rotation arrow on the diamond cutting disc and the

direction of rotation of the machine (see direction-of-rotation

arrow on the machine head) agree.

See graphics page for the mounting sequence.

To fasten the grinding/cutting disc, screw on the clamping nut

12 and tighten with the two-pin spanner; see Section “Quick-

clamping Nut ”.

 After mounting the grinding tool and before switching

on, check that the grinding tool is correctly mounted

and that it can turn freely. Make sure that the grinding

tool does not graze against the protection guard or oth-

er parts.

Bosch Power Tools 1 609 92A 0B2 | (1.8.13)

OBJ_BUCH-769-008.book Page 21 Thursday, August 1, 2013 9:59 AM

max.

[mm]

[mm]

D b d [min

-1

] [m/s]

d

180

8

22.2

8500

80

D

230

8

22.2

6500

80

b

D

180

8500

80

––

230

6500

80

d

b

100 30 M 14 8500 45

D

22 | English

Rotating the Main Handle

amplification, loss of performance or untypical behavior can

occur upon switching on.

 Before any work on the machine itself, pull the mains

Please observe the suitability of the power generator being

plug.

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

quency.

Switching On and Off

To start the power tool, press the On/Off switch 3 forward

and then down.

To lock-on the pressed On/Off switch 3, push the On/Off

switch 3 further forward.

To switch off the power tool, release the On/Off switch 3, or

when it is locked, briefly press the On/Off switch 3 and then

release it.

To save energy, only switch the power tool on when using it.

Switch Version without Lock-on (country-specific):

To start the power tool, press the On/Off switch 3 forward

and then down.

The main handle 26 can be rotated with respect to the ma-

chine housing toward the left or right in steps of 90°. In this

To switch off the machine, release the On/Off switch 3.

manner, the On/Off switch can be brought into a more con-

 Check grinding tools before using. The grinding tool

venient position for special working situations, e.g., for cut-

must be mounted properly and be able to move freely.

ting operations using the cutting guide with dust extraction

Carry out a test run for at least one minute with no load.

protection guard 22 or for left-handed persons.

Do not use damaged, out-of-centre or vibrating grind-

Press the handle unlocking button 27 in the direction of the

ing tools. Damaged grinding tools can burst and cause in-

arrow and at the same time turn the main handle 26 to the re-

juries.

quested position until it latches.

Run-on Brake

Dust/Chip Extraction

The power tool is equipped with the Bosch

Brake System, a patented electromechani-

 Dusts from materials such as lead-containing coatings,

cal run-on brake.

some wood types, minerals and metal can be harmful to

When switching off or when the power sup-

one’s health. Touching or breathing-in the dusts can cause

ply is interrupted, the machine comes to a

allergic reactions and/or lead to respiratory infections of

complete stop within a few seconds. This

the user or bystanders.

means a reduction of the run-on time of approx. 70 % when

Certain dusts, such as oak or beech dust, are considered

compared with angle grinders without run-on brake, which al-

as carcinogenic, especially in connection with wood-treat-

lows for the power tool to be placed down sooner.

ment additives (chromate, wood preservative). Materials

containing asbestos may only be worked by specialists.

Note: When the braking effect decreases noticeably, the run-

on brake has failed. The power tool should be sent immediate-

– As far as possible, use a dust extraction system suita-

ly to an after-sales service (for addresses, see section “After-

ble for the material.

– Provide for good ventilation of the working place.

sales Service and Application Service”.

– It is recommended to wear a P2 filter-class respirator.

Restarting Protection (3 601 H64 U..)

Observe the relevant regulations in your country for the

The restarting protection feature prevents uncontrolled re-

materials to be worked.

starting of the machine after an interruption in the power sup-

 Prevent dust accumulation at the workplace. Dusts can

ply.

easily ignite.

To restart the operation, switch the On/Off switch 3 to the

Off position and start the machine again.

Operation

Reduced starting current

The electronic reduced starting current limits the power con-

Starting Operation

sumption when switching the tool on and enables operation

 Observe correct mains voltage! The voltage of the pow-

from a 13 ampere fuse.

er source must agree with the voltage specified on the

Note: When the machine runs at full speed immediately after

nameplate of the machine. Power tools marked with

switching on, the reduced starting current and the restarting

230 V can also be operated with 220 V.

protection have failed. The power tool should be sent imme-

When operating the machine with power from mobile genera-

diately to an after-sales service (for addresses, see section

tors that do not have sufficient reserve capacity or are not

“After-sales Service and Application Service”.

equipped with suitable voltage control with starting current

1 609 92A 0B2 | (1.8.13) Bosch Power Tools

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OBJ_BUCH-769-008.book Page 23 Thursday, August 1, 2013 9:59 AM

English | 23

Working Advice

Cutting Stone

 Exercise caution when cutting slots in structural walls;

 Provide for sufficient dust extraction when cutting

see Section “Information on Structures”.

stone.

 Clamp the workpiece if it does not remain stationary

 Wear a dust respirator.

due to its own weight.

 The machine may be used only for dry cutting/grinding.

 Do not strain the machine so heavily that it comes to a

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

standstill.

When using the cutting guide with dust extraction protection

 After heavily straining the power tool, continue to run

guard 22, the vacuum cleaner must be approved for vacuum-

it at no-load for several minutes to cool down the acces-

ing masonry dust. Suitable vacuum cleaners are available

sory.

from Bosch.

 Do not touch grinding and cutting discs before they

Switch on the machine

have cooled down. The discs can become very hot while

and place the front part

working.

of the cutting guide on

 Do not use the power tool with a cut-off stand.

the workpiece. Slide the

machine with moderate

Note: When not using for extended periods, pull the mains

feed, adapted to the ma-

plug out of the socket outlet. When the mains plug is inserted

terial to be worked.

and mains voltage is given, the power tool, even when

switched off, still consumes a low amount of current.

Rough Grinding

 Never use a cutting disc for roughing.

The best roughing results are achieved when setting the ma-

chine 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

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

are formed.

pebble content, the diamond cutting disc can overheat and

become damaged as a result. This is clearly indicated by cir-

Flap Disc

cular sparking, rotating with the diamond cutting disc.

With the flap disc (accessory), curved surfaces and profiles

In this case, interrupt the cutting process and allow the dia-

can be worked.

mond cutting disc to cool by running the machine for a short

Flap discs have a considerably higher service life, lower noise

time at maximum speed with no load.

levels and lower sanding temperatures than conventional

Noticeable decreasing work progress and circular sparking

sanding sheets.

are indications of a diamond cutting disc that has become

dull. Briefly cutting into abrasive material (e. g. lime-sand

Cutting Metal

brick) can resharpen the disc again.

 For cutting with bonded abrasives, always use the pro-

tection guard for cutting 15.

Information on Structures

When cutting, work with moderate feed, adapted to the mate-

Slots in structural walls are subject to the Standard DIN 1053

rial being cut. Do not exert pressure onto the cutting disc, tilt

Part 1, or country-specific regulations.

or oscillate the machine.

These regulations are to be observed under all circumstanc-

es. Before beginning work, consult the responsible structural

Do not reduce the speed of running down cutting discs by ap-

engineer, architect or the construction supervisor.

plying sideward pressure.

The machine must al-

ways work in an up-

Maintenance and Service

grinding motion. Other-

wise, the danger exists

Maintenance and Cleaning

of it being pushed un-

 Before any work on the machine itself, pull the mains

controlled out of the

plug.

cut.

 For safe and proper working, always keep the machine

and ventilation slots clean.

 In extreme conditions, always use dust extraction as

far as possible. Blow out ventilation slots frequently

and install a residual current device (RCD). When work-

ing metals, conductive dust can settle in the interior of the

power tool. The total insulation of the power tool can be im-

When cutting profiles and square bar, it is best to start at the

paired.

smallest cross section.

Bosch Power Tools 1 609 92A 0B2 | (1.8.13)