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