Bosch pws 20-230 j: English

English: Bosch pws 20-230 j

OBJ_BUCH-976-005.book Page 15 Monday, August 5, 2013 3:06 PM

English | 15

used for appropriate conditions will reduce personal inju-

English

ries.

Prevent unintentional starting. Ensure the switch is in

the off-position before connecting to power source

Safety Notes

and/or battery pack, picking up or carrying the tool.

Carrying power tools with your finger on the switch or en-

General Power Tool Safety Warnings

ergising power tools that have the switch on invites acci-

Read all safety warnings and all in-

WARNING

dents.

structions. Failure to follow the warnings

Remove any adjusting key or wrench before turning

and instructions may result in electric shock, fire and/or seri-

the power tool on. A wrench or a key left attached to a ro-

ous injury.

tating part of the power tool may result in personal injury.

Save all warnings and instructions for future reference.

Do not overreach. Keep proper footing and balance at

The term “power tool” in the warnings refers to your mains-

all times. This enables better control of the power tool in

operated (corded) power tool or battery-operated (cordless)

unexpected situations.

power tool.

Dress properly. Do not wear loose clothing or jewel-

Work area safety

lery. Keep your hair, clothing and gloves away from

Keep work area clean and well lit. Cluttered or dark areas

moving parts. Loose clothes, jewellery or long hair can be

invite accidents.

caught in moving parts.

Do not operate power tools in explosive atmospheres,

If devices are provided for the connection of dust ex-

such as in the presence of flammable liquids, gases or

traction and collection facilities, ensure these are con-

dust. Power tools create sparks which may ignite the dust

nected and properly used. Use of dust collection can re-

or fumes.

duce dust-related hazards.

Keep children and bystanders away while operating a

Power tool use and care

power tool. Distractions can cause you to lose control.

Do not force the power tool. Use the correct power tool

Electrical safety

for your application. The correct power tool will do the

Power tool plugs must match the outlet. Never modify

job better and safer at the rate for which it was designed.

the plug in any way. Do not use any adapter plugs with

Do not use the power tool if the switch does not turn it

earthed (grounded) power tools. Unmodified plugs and

on and off. Any power tool that cannot be controlled with

matching outlets will reduce risk of electric shock.

the switch is dangerous and must be repaired.

Avoid body contact with earthed or grounded surfaces,

Disconnect the plug from the power source and/or the

such as pipes, radiators, ranges and refrigerators.

battery pack from the power tool before making any

There is an increased risk of electric shock if your body is

adjustments, changing accessories, or storing power

earthed or grounded.

tools. Such preventive safety measures reduce the risk of

Do not expose power tools to rain or wet conditions.

starting the power tool accidentally.

Water entering a power tool will increase the risk of electric

Store idle power tools out of the reach of children and

shock.

do not allow persons unfamiliar with the power tool or

Do not abuse the cord. Never use the cord for carrying,

these instructions to operate the power tool. Power

pulling or unplugging the power tool. Keep cord away

tools are dangerous in the hands of untrained users.

from heat, oil, sharp edges and moving parts. Damaged

Maintain power tools. Check for misalignment or bind-

or entangled cords increase the risk of electric shock.

ing of moving parts, breakage of parts and any other

When operating a power tool outdoors, use an exten-

condition that may affect the power tool’s operation. If

sion cord suitable for outdoor use. Use of a cord suitable

damaged, have the power tool repaired before use.

for outdoor use reduces the risk of electric shock.

Many accidents are caused by poorly maintained power

tools.

If operating a power tool in a damp location is unavoid-

able, use a residual current device (RCD) protected

Keep cutting tools sharp and clean. Properly maintained

supply. Use of an RCD reduces the risk of electric shock.

cutting tools with sharp cutting edges are less likely to bind

and are easier to control.

Personal safety

Use the power tool, accessories and tool bits etc. in ac-

Stay alert, watch what you are doing and use common

cordance with these instructions, taking into account

sense when operating a power tool. Do not use a power

the working conditions and the work to be performed.

tool while you are tired or under the influence of drugs,

Use of the power tool for operations different from those

alcohol or medication. A moment of inattention while op-

intended could result in a hazardous situation.

erating power tools may result in serious personal injury.

Service

Use personal protective equipment. Always wear eye

protection. Protective equipment such as dust mask,

Have your power tool serviced by a qualified repair per-

non-skid safety shoes, hard hat, or hearing protection

son using only identical replacement parts. This will en-

sure that the safety of the power tool is maintained.

Bosch Power Tools 1 609 92A 0BD | (5.8.13)

OBJ_BUCH-976-005.book Page 16 Monday, August 5, 2013 3:06 PM

16 | English

Safety Warnings for Angle Grinder

broken accessory may fly away and cause injury beyond

immediate area of operation.

Safety Warnings common for Grinding, Sanding, Wire

Hold the power tool by insulated gripping surfaces on-

Brushing or Abrasive Cutting Off Operations

ly, when performing an operation where the cutting ac-

This power tool is intended to function as a grinder,

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

sander, wire brush or cut-off tool. Read all safety warn-

ting accessory contacting a “live” wire may make exposed

ings, instructions, illustrations and specifications pro-

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

vided with this power tool. Failure to follow all instruc-

erator an electric shock.

tions listed below may result in electric shock, fire and/or

serious injury.

Position the cord clear of the spinning accessory. If you

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

Operations such as polishing are not recommended to

or arm may be pulled into the spinning wheel.

be performed with this power tool. Operations for which

the power tool was not designed may create a hazard and

Never lay the power tool down until the accessory has

cause personal injury.

come to a complete stop. The spinning wheel may grab

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

Do not use accessories which are not specifically de-

signed and recommended by the tool manufacturer.

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

Just because the accessory can be attached to your power

Accidental contact with the spinning accessory could snag

tool, it does not assure safe operation.

your clothing, pulling the accessory into your body.

The rated speed of the accessory must be at least equal

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

to the maximum speed marked on the power tool. Ac-

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

cessories running faster than their rated speed can break

cumulation of powdered metal may cause electrical haz-

and fly apart.

ards.

The outside diameter and the thickness of your acces-

Do not operate the power tool near flammable materi-

sory must be within the capacity rating of your power

als. Sparks could ignite these materials.

tool. Incorrectly sized accessories cannot be adequately

Do not use accessories that require liquid coolants. Us-

guarded or controlled.

ing water or other liquid coolants may result in electrocu-

Threaded mounting of accessories must match the

tion or shock.

grinder spindle thread. For accessories mounted by

Kickback and related warnings

flanges, the arbour hole of the accessory must fit the

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

locating diameter of the flange. Accessories that do not

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

match the mounting hardware of the power tool will run out

Pinching or snagging causes rapid stalling of the rotating

of balance, vibrate excessively and may cause loss of con-

accessory which in turn causes the uncontrolled power

trol.

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

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

ry’s rotation at the point of the binding.

spect the accessory such as abrasive wheels for chips

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

and cracks, backing pad for cracks, tear or excess

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

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

the pinch point can dig into the surface of the material

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

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

stall an undamaged accessory. After inspecting and in-

either jump toward or away from the operator, depending

stalling an accessory, position yourself and bystanders

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

away from the plane of the rotating accessory and run

ing. Abrasive wheels may also break under these condi-

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

tions.

ute. Damaged accessories will normally break apart during

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

this test time.

rect operating procedures or conditions and can be avoid-

Wear personal protective equipment. Depending on

ed by taking proper precautions as given below.

application, use face shield, safety goggles or safety

Maintain a firm grip on the power tool and position your

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

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

tectors, gloves and shop apron capable of stopping

ways use auxiliary handle, if provided, for maximum

small abrasive or workpiece fragments. The eye protec-

control over kickback or torque reaction during

tion must be capable of stopping flying debris generated

start-up. The operator can control torque reactions or

by various operations. The dust mask or respirator must be

kickback forces, if proper precautions are taken.

capable of filtrating particles generated by your operation.

Never place your hand near the rotating accessory. Ac-

Prolonged exposure to high intensity noise may cause

cessory may kickback over your hand.

hearing loss.

Do not position your body in the area where power tool

Keep bystanders a safe distance away from work area.

will move if kickback occurs. Kickback will propel the

Anyone entering the work area must wear personal

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

protective equipment. Fragments of workpiece or of a

point of snagging.

1 609 92A 0BD | (5.8.13) Bosch Power Tools

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English | 17

Use special care when working corners, sharp edges,

Do not restart the cutting operation in the workpiece.

etc. Avoid bouncing and snagging the accessory. Cor-

Let the wheel reach full speed and carefully re-enter

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

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

rotating accessory and cause loss of control or kickback.

power tool is restarted in the workpiece.

Do not attach a saw chain woodcarving blade or

Support panels or any oversized workpiece to minimize

toothed saw blade. Such blades create frequent kickback

the risk of wheel pinching and kickback. Large work-

and loss of control.

pieces tend to sag under their own weight. Supports must

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

Safety warnings specific for Grinding and Abrasive Cut-

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

ting-Off operations

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

Use only wheel types that are recommended for your

isting walls or other blind areas. The protruding wheel

power tool and the specific guard designed for the se-

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

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

can cause kickback.

signed cannot be adequately guarded and are unsafe.

The grinding surface of the centre depressed wheels

Safety warnings specific for sanding operations

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

Do not use excessively oversized sanding disc paper.

improperly mounted wheel that projects through the plane

Follow manufacturers recommendations, when select-

of the guard lip cannot be adequately protected.

ing sanding paper. Larger sanding paper extending be-

The guard must be securely attached to the power tool

yond the sanding pad presents a laceration hazard and

and positioned for maximum safety, so the least

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

amount of wheel is exposed towards the operator. The

Safety warnings specific for wire brushing operations

guard helps to protect operator from broken wheel frag-

Be aware that wire bristles are thrown by the brush

ments, accidental contact with wheel and sparks that

even during ordinary operation. Do not overstress the

could ignite clothing.

wires by applying excessive load to the brush. The wire

Wheels must be used only for recommended applica-

bristles can easily penetrate light clothing and/or skin.

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

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

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

do not allow any interference of the wire wheel or

peripheral grinding; side forces applied to these wheels

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

may cause them to shatter.

diameter due to work load and centrifugal forces.

Always use undamaged wheel flanges that are of cor-

Additional safety warnings

rect size and shape for your selected wheel. Proper

wheel flanges support the wheel thus reducing the possi-

Wear safety goggles.

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

different from grinding wheel flanges.

Do not use worn down reinforced wheels from larger

power tools. Wheels intended for larger power tools are

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

Use suitable detectors to determine if utility lines are

burst.

hidden in the work area or call the local utility company

Additional safety warnings specific for abrasive cutting

for assistance. Contact with electric lines can lead to fire

off operations

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

sion. Penetrating a water line causes property damage or

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

may cause an electric shock.

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

Overstressing the wheel increases the loading and suscep-

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

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

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

possibility of kickback or wheel breakage.

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

vents uncontrolled restarting.

Do not position your body in line with and behind the

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

Do not touch grinding and cutting discs before they

is moving away from your body, the possible kickback may

have cooled down. The discs can become very hot while

propel the spinning wheel and the power tool directly at

working.

you.

Secure the workpiece. A workpiece clamped with clamp-

When wheel is binding or when interrupting a cut for

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

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

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

er tool motionless until the wheel comes to a complete

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

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

approved to BS 1362).

the cut while the wheel is in motion otherwise kickback

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

may occur. Investigate and take corrective action to elimi-

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

nate the cause of wheel binding.

ised customer service agent. The replacement plug should

have the same fuse rating as the original plug.

Bosch Power Tools 1 609 92A 0BD | (5.8.13)

OBJ_BUCH-976-005.book Page 18 Monday, August 5, 2013 3:06 PM

18 | English

The severed plug must be disposed of to avoid a possible

2 On/Off switch

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

3 Auxiliary handle

et elsewhere.

4 Grinder spindle

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

5 Protection guard for grinding

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

6 Locking screw for protection guard

7 Protection guard for cutting*

Product Description and Specifica-

8 Mounting flange with O-ring

tions

9 Grinding/cutting disc*

Read all safety warnings and all instruc-

10 Clamping nut

tions. Failure to follow the warnings and in-

11 Quick-clamping nut *

structions may result in electric shock, fire

12 Protection guard for for grinding cup*

and/or serious injury.

13 Grinding cup*

14 Hand guard*

Intended Use

15 Spacer discs*

The machine is intended for cutting, roughing and brushing of

16 Rubber sanding plate*

metal and stone materials without the use of water.

17 Sanding sheet*

For cutting with bonded abrasives, a special cutting guard

18 Round nut*

(accessory) must be used.

19 Cup brush*

When cutting in stone, provide for sufficient dust extraction.

With approved sanding tools, the machine can be used for

20 Cutting guide with dust extraction protection guard *

sanding with sanding discs.

21 Diamond cutting disc*

22 Two-pin spanner for clamping nut*

Product Features

23 Two-pin spanner, offset, for grinding cup*

The numbering of the product features refers to the illustra-

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

tion of the machine on the graphics page.

livery scope of the product. A complete overview of accessories

1 Spindle lock button

can be found in our accessories program.

Technical Data

Angle Grinder PWS 20-230 PWS 20-230 J PWS 1900

Article number

3 603 C59 W.. 3 603 C59 V.. 3 603 C59 W..

Rated power input

W 2000 2000 1900

Output power

W 1250 1250 1170

Rated speed

min

-1

6600 6600 6600

Grinding disc diameter, max.

mm 230 230 230

Thread of grinder spindle

M 14 M 14 M 14

Thread length (max.) of grinder spindle

mm 25 25 25

Reduced starting current

Weight according to EPTA-Procedure 01/2003

with vibration-damping auxiliary handle

kg 5.5 5.5 5.5

Weight according to EPTA-Procedure 01/2003

with standard-auxiliary handle

kg 5.4 5.4 5.4

Protection class

/II /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

Vibration total values a

h

(triax vector sum) and uncertainty K

determined according to EN 60745:

Measured sound values determined according to EN 60745.

2

2

Surface grinding: a

h

=7.5 m/s

, K=1.5 m/s

,

Typically the A-weighted noise levels of the product are:

2

2

Disk sanding: a

h

=4.0 m/s

, K=1.5 m/s

.

Sound pressure level 92 dB(A); Sound power level

The vibration emission level given in this information sheet has

103 dB(A). Uncertainty K =3 dB.

been measured in accordance with a standardised test given

Wear hearing protection!

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

er. It may be used for a preliminary assessment of exposure.

1 609 92A 0BD | (5.8.13) Bosch Power Tools

OBJ_BUCH-976-005.book Page 19 Monday, August 5, 2013 3:06 PM

English | 19

The declared vibration emission level represents the main ap-

Auxiliary Handle

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

Operate your machine only with the auxiliary handle 3.

applications, with different accessories or poorly maintained,

Screw the auxiliary handle 3 on the right or left of the machine

the vibration emission may differ. This may significantly in-

head depending on the working method.

crease the exposure level over the total working period.

An estimation of the level of exposure to vibration should also

Vibration-dampening Auxiliary Handle

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

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

icantly reduce the exposure level over the total working period.

Identify additional safety measures to protect the operator

The vibration-dampening auxiliary handle reduces the vibra-

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

tions, making operation more comfortable and secure.

accessories, keep hands warm, organise work patterns.

Do not make any alterations to the auxiliary handle.

Declaration of Conformity

Do not continue to use an auxiliary handle if it is damaged.

We declare under our sole responsibility that the product de-

Hand Guard

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

For operations with the rubber sanding plate 16 or with

lowing standards or standardization documents: EN 60745

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

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

hand guard 14.

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

The hand guard 14 is fastened with the auxiliary handle 3.

Technical file (2006/42/EC) at:

Robert Bosch GmbH, PT/ETM9,

Mounting the Grinding Tools

D-70745 Leinfelden-Echterdingen

Before any work on the machine itself, pull the mains

Henk Becker

Helmut Heinzelmann

plug.

Executive Vice President

Head of Product Certification

Do not touch grinding and cutting discs before they

Engineering

PT/ETM9

have cooled down. The discs can become very hot while

working.

Clean the grinder spindle 4 and all parts to be mounted.

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

Robert Bosch GmbH, Power Tools Division

er spindle with the spindle lock button 1.

D-70745 Leinfelden-Echterdingen

Actuate the spindle lock button only when the grinder

21.06.2013

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

come damaged.

Assembly

Grinding/Cutting Disc

Pay attention to the dimensions of the grinding tools. The

Mounting the Protective Devices

mounting hole diameter must fit the mounting flange without

Before any work on the machine itself, pull the mains

play. Do not use reducers or adapters.

plug.

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

Note: After breakage of the grinding disc during operation or

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

damage to the holding fixtures on the protection guard/power

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

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

arrow on the machine head) agree.

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

See graphics page for the mounting sequence.

sales Service and Application Service”.

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

Protection Guard for Grinding

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

Place the protection guard 5 on the spindle collar. Adjust the

clamping Nut .

position of the protection guard 5 to the requirements of the

After mounting the grinding tool and before switching

operation and lock the protection guard 5 with the locking

on, check that the grinding tool is correctly mounted

screw 6.

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

Adjust the protection guard 5 in such a manner that

tool does not graze against the protection guard or oth-

sparking is prevented in the direction of the operator.

er parts.

Protection Guard for Cutting

A plastic part (O-ring) is fitted around

the centring collar of mounting flange 8.

For cutting with bonded abrasives, always use the pro-

If the O-ring is missing or damaged,

tection guard for cutting 7.

the mounting flange 8 must be replaced

Provide for sufficient dust extraction when cutting

before resuming operation.

stone.

The protection guard for cutting 7 is mounted in the same

manner as the protection guard for grinding 5.

Bosch Power Tools 1 609 92A 0BD | (5.8.13)

20 | English

Flap Disc

A properly attached, undam-

For operations with the flap disc, always mount the

aged quick-clamping nut can

hand guard 14.

be loosened by hand when

turning the knurled ring in an-

Rubber Sanding Plate

ticlockwise direction.

For operations with the rubber sanding plate 16, al-

Never loosen a tight quick-

ways mount the hand guard 14.

clamping nut with pliers. Al-

See graphics page for the mounting sequence.

ways use the two-pin span-

Before mounting the rubber sanding plate 16, put the 2 spac-

ner. Insert the two-pin span-

er discs 15 onto the grinder spindle 4.

ner as shown in the

illustration.

Screw on the round nut 18 and tighten with the two-pin span-

ner.

Cup Brush/Disc Brush

For operations with the cup brush/wheel brush, always

Approved Grinding Tools

mount the hand guard 14.

All grinding tools mentioned in these operating instructions

See graphics page for the mounting sequence.

can be used.

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

The permissible speed [min

-1

] or the circumferential speed

the grinder spindle until it rests firmly against the grinder

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

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

given in the table.

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

Therefore, observe the permissible rotational/circumferen-

Grinding Cup

tial speed on the label of the grinding tool.

When working with the grinding cup, mount the special

protection guard 12.

The grinding cup 13 should never project further out of the

protection guard 12 than necessary for the respective grind-

ing application. Adjust the protection guard 12 accordingly to

this dimension.

See graphics page for the mounting sequence.

Screw on clamping nut 10 and tighten with two-pin spanner

23.

Quick-clamping Nut

For convenient changing of grinding tools without the use of

additional tools, you can use the quick-clamping nut 11 in-

stead of the clamping nut 10.

The quick-clamping nut 11 may be used only for grind-

ing or cutting discs.

Use only a flawless, undamaged quick-clamping nut 11.

Rotating the Machine Head

When screwing on, pay attention that the side of the

quick-clamping nut 11 with printing does not face the

Before any work on the machine itself, pull the mains

grinding disc; the arrow must point to the index mark 24.

plug.

Lock the grinder spindle with

The machine head can be

the spindle lock button 1. To

rotated with respect to

tighten the quick-clamping

the machine housing in

nut, firmly turn the grinding

90° steps. In this man-

disc in clockwise direction.

ner, the On/Off switch

can be brought into a

more convenient position

for special working situa-

tions, e. g., for cutting op-

erations using the cutting

guide with dust extrac-

tion protection guard 20 or for left-handed persons.

Completely unscrew the four screws. Rotate the machine

head carefully, without removing it from the housing, to the

new position. Screw in and tighten the four screws again.

1 609 92A 0BD | (5.8.13) Bosch Power Tools

24

OBJ_BUCH-976-005.book Page 20 Monday, August 5, 2013 3:06 PM

max.

[mm]

[mm]

-1

D b d [min

] [m/s]

d

230 8 22.2 6500 80

D

b

D

230 6500 80

d

b

100 30 M 14 8500 45

D

OBJ_BUCH-976-005.book Page 21 Monday, August 5, 2013 3:06 PM

English | 21

Dust/Chip Extraction

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

standstill.

Dusts from materials such as lead-containing coatings,

some wood types, minerals and metal can be harmful to

After heavily straining the power tool, continue to run

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

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

allergic reactions and/or lead to respiratory infections of

sory.

the user or bystanders.

Do not touch grinding and cutting discs before they

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

have cooled down. The discs can become very hot while

as carcinogenic, especially in connection with wood-treat-

working.

ment additives (chromate, wood preservative). Materials

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

containing asbestos may only be worked by specialists.

Rough Grinding

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

ble for the material.

Never use a cutting disc for roughing.

Provide for good ventilation of the working place.

The best roughing results are achieved when setting the ma-

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

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

Observe the relevant regulations in your country for the

forth with moderate pressure. In this manner, the workpiece

materials to be worked.

will not become too hot, does not discolour and no grooves

Prevent dust accumulation at the workplace. Dusts can

are formed.

easily ignite.

Flap Disc

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

Operation

can be worked.

Flap discs have a considerably higher service life, lower noise

Starting Operation

levels and lower sanding temperatures than conventional

Observe correct mains voltage! The voltage of the pow-

sanding sheets.

er source must agree with the voltage specified on the

Cutting Metal

nameplate of the machine. Power tools marked with

For cutting with bonded abrasives, always use the pro-

230 V can also be operated with 220 V.

tection guard for cutting 7.

When operating the machine with power from mobile genera-

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

tors that do not have sufficient reserve capacity or are not

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

equipped with suitable voltage control with starting current

or oscillate the machine.

amplification, loss of performance or untypical behavior can

occur upon switching on.

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

Please observe the suitability of the power generator being

plying sideward pressure.

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

The machine must al-

quency.

ways work in an up-

grinding motion. Other-

Switching On and Off

wise, the danger exists

To start the power tool, press the On/Off switch 2 forward

of it being pushed un-

and then down.

controlled out of the

To switch off the machine, release the On/Off switch 2.

cut.

Check grinding tools before using. The grinding tool

When cutting profiles

must be mounted properly and be able to move freely.

and square bar, it is best

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

to start at the smallest

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

cross section.

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

juries.

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

Cutting Stone

Reduced starting current (PWS 20-230 J)

Provide for sufficient dust extraction when cutting

The electronic reduced starting current limits the power con-

stone.

sumption when switching the tool on and enables operation

from a 13 ampere fuse.

Wear a dust respirator.

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

Working Advice

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

Exercise caution when cutting slots in structural walls;

Operate the machine only with dust extraction and additional-

see Section “Information on Structures”.

ly wear a dust protection mask.

Clamp the workpiece if it does not remain stationary

The vacuum cleaner must be approved for the extraction of

due to its own weight.

masonry dust. Bosch provides suitable vacuum cleaners.

Bosch Power Tools 1 609 92A 0BD | (5.8.13)

OBJ_BUCH-976-005.book Page 22 Monday, August 5, 2013 3:06 PM

22 | English

Switch on the machine

In all correspondence and spare parts order, please always in-

and place the front part

clude the 10-digit article number given on the type plate of

of the cutting guide on

the machine.

the workpiece. Slide the

Great Britain

machine with moderate

Robert Bosch Ltd. (B.S.C.)

feed, adapted to the ma-

P.O. Box 98

terial to be worked.

Broadwater Park

North Orbital Road

Denham

Uxbridge

UB 9 5HJ

Tel. Service: (0844) 7360109

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

Fax: (0844) 7360146

pebble content, the diamond cutting disc can overheat and

E-Mail: boschservicecentre@bosch.com

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

cular sparking, rotating with the diamond cutting disc.

Ireland

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

Origo Ltd.

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

Unit 23 Magna Drive

time at maximum speed with no load.

Magna Business Park

Noticeable decreasing work progress and circular sparking

City West

are indications of a diamond cutting disc that has become

Dublin 24

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

Tel. Service: (01) 4666700

brick) can resharpen the disc again.

Fax: (01) 4666888

Information on Structures

Australia, New Zealand and Pacific Islands

Slots in structural walls are subject to the Standard DIN 1053

Robert Bosch Australia Pty. Ltd.

Part 1, or country-specific regulations.

Power Tools

These regulations are to be observed under all circumstanc-

Locked Bag 66

es. Before beginning work, consult the responsible structural

Clayton South VIC 3169

engineer, architect or the construction supervisor.

Customer Contact Center

Inside Australia:

Phone: (01300) 307044

Maintenance and Service

Fax: (01300) 307045

Inside New Zealand:

Maintenance and Cleaning

Phone: (0800) 543353

Before any work on the machine itself, pull the mains

Fax: (0800) 428570

plug.

Outside AU and NZ:

For safe and proper working, always keep the machine

Phone: +61 3 95415555

and ventilation slots clean.

www.bosch.com.au

In extreme conditions, always use dust extraction as

Republic of South Africa

far as possible. Blow out ventilation slots frequently

Customer service

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

Hotline: (011) 6519600

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

Gauteng – BSC Service Centre

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

35 Roper Street, New Centre

paired.

Johannesburg

Please store and handle the accessory(-ies) carefully.

Tel.: (011) 4939375

If the replacement of the supply cord is necessary, this has to

Fax: (011) 4930126

be done by Bosch or an authorized Bosch service agent in or-

E-Mail: bsctools@icon.co.za

der to avoid a safety hazard.

KZN – BSC Service Centre

After-sales Service and Application Service

Unit E, Almar Centre

143 Crompton Street

Our after-sales service responds to your questions concern-

Pinetown

ing maintenance and repair of your product as well as spare

Tel.: (031) 7012120

parts. Exploded views and information on spare parts can al-

Fax: (031) 7012446

so be found under:

E-Mail: bsc.dur@za.bosch.com

www.bosch-pt.com

Bosch’s application service team will gladly answer questions

concerning our products and their accessories.

1 609 92A 0BD | (5.8.13) Bosch Power Tools