SAFETY AND OPERATING MANUAL
ORIGINAL INSTRUCTIONS
ANGLE GRINDER WU736 WU736.1 WU737 WU737.1 WU743 WU743.1 WU743L W U745 WU745.1
General power tool safety
warnings
Warning: Read all safety warnings and all instructions.
Failure to follow the warnings and instructions may result in electric
shock, fire and/or serious injury.
Save all warnings and instructions for future reference.
The term “power tool” in the warnings refers to your mainsoperated (corded) power tool or battery-operated (cordless) power
tool.
1
WORK AREA SAFETY
a) Keep work area clean and well lit. Cluttered or dark areas invite
accidents.
b) Do not operate power tools in explosive atmospheres, such
as in the presence of flammable liquids, gases or dust. Power
tools create sparks which may ignite the dust or fumes.
c) Keep children and bystanders away while operating a power
tool. Distractions can cause you to lose control.
2
ELECTRICAL SAFETY
a) Power tool plugs must match the outlet. Never modify the
plug in any way. Do not use any adapter plugs with earthed
(grounded) power tools. Unmodified plugs and matching outlets
will reduce risk of electric shock.
b) Avoid body contact with earthed or grounded surfaces,
such as pipes, radiators, ranges and refrigerators. There is an
increased risk of electric shock if your body is earthed or grounded.
c) Do not expose power tools to rain or wet conditions. Water
entering a power tool will increase the risk of electric shock.
d) Do not abuse the cord. Never use the cord for carrying,
pulling or unplugging the power tool. Keep cord away from
heat, oil, sharp edges or moving parts. Damaged or entangled
cords increase the risk of electric shock.
e) When operating a power tool outdoors, use an extension
cord suitable for outdoor use. Use of a cord suitable for outdoor
use reduces the risk of electric shock.
f) If operating a power tool in a damp location is unavoidable,
use a residual current device (RCD) protected supply. Use of an
RCD reduces the risk of electric shock.
3
PERSONAL SAFETY
a) Stay alert, watch what you are doing and use common
sense when operating a power tool. Do not use a power tool
while you are tired or under the influence of drugs, alcohol or
medication. A moment of inattention while operating power tools
may result in serious personal injury.
b) Use personal protective equipment. Always wear eye
protection. Protective equipment such as dust mask, non-skid
safety shoes, hard hat, or hearing protection used for appropriate
conditions will reduce personal injuries.
c) Prevent unintentional starting. Ensure the switch is in the
off-position before connecting to power source and/or battery
pack, picking up or carrying the tool. Carrying power tools with
your finger on the switch or energising power tools that have the
switch on invites accidents.
d) Remove any adjusting key or wrench before turning the
power tool on. A wrench or a key left attached to a rotating part of
the power tool may result in personal injury.
2
e) Do not overreach. Keep proper footing and balance at all
times. This enables better control of the power tool in unexpected
situations.
f) Dress properly. Do not wear loose clothing or jewellery. Keep
your hair, clothing and gloves away from moving parts. Loose
clothes, jewellery or long hair can be caught in moving parts.
g) If devices are provided for the connection of dust extraction
and collection facilities, ensure these are connected and
properly used. Use of dust collection can reduce dust-related
hazards.
4
POWER TOOL USE AND CARE
a) Do not force the power tool. Use the correct power tool for
your application. The correct power tool will do the job better and
safer at the rate for which it was designed.
b) Do not use the power tool if the switch does not turn it on
and off. Any power tool that cannot be controlled with the switch is
dangerous and must be repaired.
c) Disconnect the plug from the power source and/or
the battery pack from the power tool before making any
adjustments, changing accessories, or storing power tools. Such
preventive safety measures reduce the risk of starting the power
tool accidentally.
d) Store idle power tools out of the reach of children and do
not allow persons unfamiliar with the power tool or these
instructions to operate the power tool. Power tools are dangerous
in the hands of untrained users.
e) Maintain power tools. Check for misalignment or binding of
moving parts, breakage of parts and any other condition that
may affect the power tool’s operation. If damaged, have the
power tool repaired before use. Many accidents are caused by
poorly maintained power tools.
f) Keep cutting tools sharp and clean. Properly maintained cutting
tools with sharp cutting edges are less likely to bind and are easier
to control.
g) Use the power tool, accessories and tool bits etc. in
accordance with these instructions, taking into account the
working conditions and the work to be performed. Use of the
power tool for operations different from those intended could result
in a hazardous situation.
5
SERVICE
a) Have your power tool serviced by a qualified repair person
using only identical replacement parts. This will ensure that the
safety of the power tool is maintained.
Additional safety points for your
angle grinder
SAFETY WARNINGS COMMON FOR GRINDING OR ABRASIVE
CUTTING-OFF OPERATIONS:
This power tool is intended to function as a grinder. Read all
1
safety warnings, instructions, illustrations and specifications
provided with this power tool. Failure to follow all instructions
listed below may result in electric shock, fire and /or serious injur y.
Operations such as grinding, wire brushing, polishing or
2
cutting off are not recommended to be performed with
this power tool. Operations for which the power tool was not
3
designed may create a hazard and cause personal injury.
3
Do not use accessories which are not specifically designed
and recommended by the tool manufacturer, Just because the
accessor y can be attached to your power tool, it does not assure
safe operation.
4
The rated speed of the accessory must be at least equal to
the maximum speed marked on the power tool, Accessories
running faster than their rated speed can fly apart.
5
The outside diameter and the thickness of your accessor y
must be within the capacity rating of your power tool.
Incorrectly sized accessories cannot be adequately guarded or
controlled.
6
The arbour size of wheels, flanges, backing pads or any other
accessory must properly fit the spindle of the power tool.
Accessories with arbour holes that do not match the mounting
hardware of the power tool will run out of balance, vibrate
excessively and may cause loss of control.
7
Do not use a damaged accessory,. Before each use inspect
the accessory such as abrasive wheels for chips and cracks,
backing pad for cracks, tear or excess wear, wire brush for
loose or cracked wires, If power tool or accessory is dropped,
inspect for damage or install an undamaged accessory. After
inspecting and installing an accessory, position yourself and
bystanders away from the plane of the rotating accessory
and run the power tool at maximum no load speed for one
minute. Damaged accessories will normally break apart during this
test time.
8
Wear personal protective equipment. Depending on
application, use face shield, safety goggles or safety glasses,.
As appropriate, wear dust mask, hearing protectors, gloves
and shop apron capable of stopping small abrasive or
workpiece fragments. The eye protection must be capable of
stopping flying debris generated by various operations . The dust
mask or respirator must be capable of filtrating particles generated
by your operation Prolonged exposure to high intensity noise may
cause hearing loss.
9
Keep bystanders a safe distance away from work area.
Anyone entering the work area must wear personal
protective equipment. Fragments of workpiece or of a broken
accessor y may fly away and cause injury beyond immediate area of
operation.
10
Hold power tool by insulated gripping sur faces only, when
performing an operation where the cutting accessory may
contact hidden wiring or its own cord. Cutting accessory
contacting a “live” wire may make exposed metal parts of the
power tool “live” and shock the operator.
11
Position the cord clear of the spinning accessory. If you lose
control, the cord may be cut or snagged and your hand or arm may
be pulled into the spinning accessory.
12
Never lay the power tool down until the accessory has come
to a complete stop. The spinning accessory may grab the
surface and pull the power tool out of your control,
13
Do not run the power tool while carrying it at your side.
Accidental contact with the spinning accessory could snag your
clothing, pulling the accessory into your body.
14
Regularly clean the power tool’s air vents. The motor’s fan will
draw the dust inside the housing and excessive accumulation of
powdered metal may cause electrical hazards.
15
Do not operate the power tool near flammable materials.
Sparks could ignite these materials.
4
16
Do not use accessories that require liquid coolants. Using
water or other liquid coolants may result in electrocution or shock.
17
Your hand must hold on the handle when you are working. Always
use the auxiliary handles supplied with the tool. Loss of control can
cause personal injury.
FURTHER SAFET Y INSTRUCTIONS FOR ALL OPERATIONS
KICKBACK AND RELATED WARNINGS
Kickback is a sudden reaction to a pinched or snagged rotating
wheel, backing pad, brush or any other accessory. Pinching or
snagging causes rapid stalling of the rotating accessory which
in turn causes the uncontrolled power tool to be forced in the
direction opposite of the accessory’s rotation at the point of the
binding.
For example, if an abrasive wheel is snagged or pinched by the
workpiece, the edge of the wheel that is entering into the pinch
point can dig into the surface of the material causing the wheel
to climb out or kick out. The wheel may either jump toward or
away from the operator, depending on direction of the wheel’s
movement at the point of pinching Abrasive wheels may also break
under these conditions.
Kickback is the result of power tool misuse and /or incorrect
operating procedures or conditions and can be avoided by taking
proper precautions as given below.
1
Maintain a firm grip on the power tool and position your
body and arm to allow you to resist kickback forces,. Always
use auxiliary handle, if provided, for maximum control over
kickback or torque reaction during start-up. The operator can
control torque reactions or kickback forces, if proper precautions
are taken.
Never place your hand near the rotating accessory. Accessory
2
may kickback over your hand.
Do not position your body in the area where power tool will
3
move if kickback occurs, Kickback will propel the tool in direction
opposite to the wheel’s movement at the point of snagging.
Use special care when working corners, sharp edges etc.,
4
avoid bouncing and snagging the accessory. Corners, sharp
edges or bouncing have a tendency to snag the rotating accessor y
and cause loss of control or kickback.
Do not at tach a saw chain woodcarving blade or toothed saw
5
blade. Such blades create frequent kickback and loss of control.
ADDITIONAL SAFETY INSTRUCTIONS FOR GRINDING AND
CUTTING-OFF OPERATIONS
SAFETY WARNINGS SPECIFIC FOR GRINDING AND
ABRASIVE CUTTING-OFF OPERATIONS:
Use only wheel types that are recommended for your power
1
tool and the specific guard designed for the selected wheel.
Wheels for which the power tool was not designed cannot be
adequately guarded and are unsafe.
The guard must be securely attached to the power tool and
2
positioned for maximum safety, so the least amount of wheel
is exposed towards the operator. The guard helps to protect
operator from broken wheel fragments and accidental contact with
wheel.
Wheels must be used only for recommended applications.
3
For example: do not grind with the side of cut-of f wheel.
Abrasive cut-off wheels are intended for peripheral grinding, side
forces applied to these wheels may cause them to shatter.
Always use undamaged wheel flanges that are of correct
4
5
size and shape for your selected wheel. Proper wheel flanges
support the wheel thus reducing the possibility of wheel breakage.
Flanges for cut-off wheels may be different from grinding wheel
flanges.
5
Do not use worn down wheels from larger power tools.
Wheel intended for larger power tool is not suitable for the higher
speed of a smaller tool and may burst.
ADDITIONAL SAFETY INSTRUCTIONS FOR CUTTING-OFF
OPERATIONS
ADDITIONAL SAFETY WARNINGS SPECIFIC FOR ABRASIVE
CUTTING OFF OPERATIONS:
1
Do not “jam” the cut-off wheel or apply excessive pressure,
Do not at tempt to make an excessive depth of cut.
Overstressing the wheel increases the loading and susceptibility
to twisting or binding of the wheel in the cut and the possibility of
kickback or wheel breakage.
2
Do not position your body in line with and behind the
rotating wheel. When the wheel, at the point of operation, is
moving away from your body, the possible kickback may propel the
spinning wheel and the power tool directly at you.
3
When wheel is binding or when interrupting a cut for any
reason, switch off the power tool and hold the power tool
motionless until the wheel comes to a complete stop. Never
attempt to remove the cut-off wheel from the cut while the
wheel is in motion otherwise kickback may occur. Investigate
and take corrective action to eliminate the cause of wheel binding.
4
Do not restart the cutting operation in the workpiece,. Let
the wheel reach full speed and carefully reenter the cut. The
wheel may bind, walk up or kickback if the power tool is restarted
in the workpiece,
Support panels or any oversized workpiece to minimize the
5
risk of wheel pinching and kickback, Large workpieces tend to
sag under their own weight. Supports must be placed under the
workpiece near the line of cut and near the edge of the workpiece
on both sides of the wheel.
Use extra caution when making a “pocket cut” into existing
6
walls or other blind areas. The protruding wheel may cut gas or
water pipes, electrical wiring or objects that can cause kickback.
6
Symbols
To reduce the risk of injury, user must read instruction
manual.
Warning
Wear eye protection
Wear dust mask
Wear ear protection
Double insulated
Waste electrical products must not be disposed of with
household waste. Please recycle where facilities exist.
Check with your local authorities or retailer for recycling
advice.
7
Component list
Lock-off & lock-on switch
1
Hand grip area
2
Auxiliary handle
3
Spindle lock button
4
Outer flange
5
Inner flange
6
Spindle
7
Disc *
8
Spanner
9
Protection guard for grinding
10
Clamping screw
11
Coded projection
12
Brush cap
13
Protection guard for cutting *
14
2
3
4
1
10
11
12
13
7
5689
* Not all the accessories illustrated or described are included in
standard delivery.
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Technical data
Vibration Information
Type WU736 WU736.1 WU737 737.1 WU743 WU743.1
WU743L WU745 WU745.1(700-749-designation of machinery,
representative of Angle Grinder)
WU743L
Voltage 110V~50Hz 220-240V~50/60Hz
•
Power
•
input
Rated
•
speed
Protection
•
class
Spindle
•
thread
•
Disc size 230mm 180mm 230mm
Disc bore 22.2mm
•
Machine
•
weight
6600/min 8400/min 6600/min
WU736
WU736.1
2000W 2200W 2000W 2200W
4.5kg 4.7kg 4.5kg 4.7kg
WU737
WU737.1
/II
M14
WU743
WU743.1
WU745
WU745.1
Noise information
A weighted sound pressure LpA:94dB(A)
•
A weighted sound power LwA:105dB(A)
•
KpA&KwA 3.0dB(A)
•
Wear ear protection when sound pressure is over 80dB(A)
•
Vibration total values (triax vector sum ) determined according to
EN 60745:
Typical weighted
vibration
Vibration emission value a
Uncertainty K = 1.5m/s²
= 7. 2 9 m / s
h
2
Warning: The vibration emission value during actual use of
the power tool can differ from the declared value depending on
the ways in which the tool is used dependant on the following
examples and other variations on how the tool is used:
How the tool is used and the materials being cut.
The tool being in good condition and well maintained.
The use the correct accessory for the tool and ensuring it is sharp
and in good condition.
The tightness of the grip on the handles and if any anti vibration
accessories are used.
And the tool is being used as intended by its design and these
instructions.
This tool may cause hand-arm vibration syndrome if its use is
not adequately managed.
Warning: To be accurate, an estimation of exposure level in
the actual conditions of use should also take account of all parts of
the operating cycle such as the times when the tool is switched off
and when it is running idle but not actually doing the job. This may
9
significantly reduce the exposure level over the total working period.
Helping to minimise your vibration exposure risk.
Maintain this tool in accordance with these instructions and keep
well lubricated (where appropriate).
If the tool is to be used regularly then invest in anti vibration
accessories.
Avoid using tools in temperatures of 10
Plan your work schedule to spread any high vibration tool use across
a number of days.
0
C or less.
Accessories
•
Spanner 1
•
Auxiliary handle 1
We recommend that you purchase your accessories from the same
store that sold you the tool. Use good quality accessories marked
with a well-known brand name. Choose the type according to the
work you intend to undertake. Refer to the accessory packaging for
further details. Store personnel can assist you and offer advice.
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Operating instructions
Note: Before using the tool, read the instruction book carefully.
INTENDED USE
The machine is intended for cutting, roughing and brushing metal
and stone materials without using water.For cutting metal, a
special protection guard for cutting ( accessory) must be used.
Assembly and adjustment
MOUNTING THE PROTECTIVE DEVICES
1
AUXILIARY HANDLE
For all work with the machine, the Auxiliary Handle (3) must
be mounted. Screw the Auxiliary Handle (3) into the head of the
machine according to the working method. (See Fig. A)
Warning! Do not make any alterations to the auxiliary
handle. Do not continue to use an auxiliary handle if it is
damaged.
MOUNTING THE GRINDING TOOLS
Before any work on the machine itself, pull the mains plug.
Grinding and cutting discs become very hot while working ;
do not touch until they have cooled.
1
SPINDLE LOCK BUT TON
Clean the grinder spindle and all parts to be mounted. For clamping
and loosening the grinding tools, lock the grinder Spindle (7) with
the Spindle Lock Button (4).
A
11
Actuate the spindle lock button (4) only when the grinder
spindle is at a standstill!
2
GRINDING/CUTTING DISC
Pay attention to the dimensions of the grinding disc. The
mounting hole diameter must fit the inner flange (6) without
play. Do not use reducers or adapters.
When using a diamond cutting disc, take care that the directionof-rotation arrow on the diamond cutting disc and the direction of
rotation of the machine (direction- of-rotation arrow on the machine
head) agree.
For mounting, see the Component list illustration page.
Screw on the outer flange (5) and tighten with the two-pin spanner
(9 ). ( See Fig. B)
3
ADJUSTABLE OUTER FLANGE CL AMPING
The outer flange (5 ) should be adjusted to suit different disc
thickness. For thinner cutting or diamond discs the raised part of
the outer flange is fitted facing away from the disc ( See Fig. C.2).
For thicker grinding discs the raised part of the outer flange is fitted
facing towards the disc to provide improved support for the disc
hole (See Fig. C.1). Always ensure your disc is securely clamped.
ADJUSTING THE PROTECTION GUARD
Before any work on the machine itself, pull the mains plug.
For work with grinding or cutting discs, the protection guard
must be mounted.
The Coded Projection (12) on the protection guard (10/14) ensures
that only a guard that fits the machine type can be mounted.
Loosen the clamping Screw (11), if necessary.
Place the protection guard (10/14) with Coded Projection (12) into
B
C1
C2
C
12
the coded groove on the spindle collar of the machine head and
rotate to the required position (working position).
The closed side of the protection guard (10/14) must always
point to the operator.
Tighten clamping screw (11).
BA
Operation
STARTING OPERATION
Your switch is locked off to prevent accidental starting. To switch
on your tool, push the safety switch lever (B) forward and depress
on/ off switch (A) fully. Now your tool is switch on. To switch off
your tool, just release the On/Off switch.
If you wish to use the tool continuously, push the safety switch
lever (B ) forward and depress on /off switch (A) fully, then push
the safety switch lever (B ) forward again and release the On/Off
switch. Now your switch has been locked on for continuously use.
To switch off your tool, simply depress On /Off switch fully, the
safety On /Off switch will automatically release.(See Fig. D)
Restarting protection
The restarting protection feature prevents uncontrolled restarting of
the machine after an interruption in the power supply.
To restar t the operation, switch the On/ Off switch (A ) to the Off
position and start the machine again.
SOFT START MOTOR
Internal electronic components allow the motor speed to increase
slowly, which reduces the“twisting”effect on your wrists due to
the high power motor.
D
13
OPERATING INSTRUCTIONS
Clamp the workpiece if it does not remain stationary due to its own
•
weight.
Do not strain the machine so heavily that it comes to a standstill.
•
Grinding and cutting discs become ver y hot while working; do not
•
touch until they have cooled.
Pull the plug from the socket-outlet when not using the
•
machine. With the plug inserted and mains voltage existing, the
power tool still has low power consumption even when it switched
off.
HAND GRIP AREAS
1
Always hold your angle grinder firmly with both hands when
operating (See Fig. E).
2
ROUGH GRINDING
The best roughing results are achieved when setting the machine
at an angle of 30 ° to 40°. Move the machine back and forth with
moderate pressure. In this manner, the workpiece will not become
too hot, does not discolour and no grooves are formed.
Warning! Never use a cutting disc for roughing.
3
CUTTING
Warning! For cutting metal, always work with the wheel
guard for cutting.
When cutting, do not press, tilt or oscillate the machine. Work with
moderate feed, adapted to the material being cut.
Do not reduce the speed of running down cutting discs by applying
sideward pressure.
The direction in which the cutting is performed is important.
E
14
The machine must always work in an up-grinding motion.
Therefore, never move the machine in the other direction!
Otherwise, the danger exists of it being pushed uncontrolled out of
the cut.
AUTO-STOP CARBON BRUSHES
When the Resin Insulating Tip (15) inside the Carbon Brush (16)
is exposed to contact the commutator (17), it will automatically
shut off the motor. When this occurs, both carbon brushes should
be replaced. Keep the carbon brushes clean and free to slip in the
holders. Both carbon brushes should be replaced at the same time.
Use only identical carbon brushes.( See Fig. F)
REPLACE THE CARBON BRUSH AS FOLLOWS : (See Fig. G & H)
Unscrew the Brush Cap (13), remove the carbon brush (16), if
the carbon has worn down to 6mm it should be replaced. Always
replace both brushes at the same time, insert the new brush and
replace the brush cap. Check that the tool is working. Before use,
allow it run for a few minutes to enable the brushes to settle.
15
17
F
G
16
15
16
H
Working hints for your angle
grinder
If your power tool becomes too hot, run no load for 2-3 minutes to
cool the motor.
Never start your angle grinder with the disc/ accessory in contact
with the workpiece.
Always start at no load to achieve maximum speed then start
working.
Do not force the disc to work faster, reducing the Disc’s moving
speed means longer working time.
When grinding, always work with a 30° to 40° angle between disc
and workpiece. Larger angles will cut ridges into the workpiece and
affect the surface finish. Move the angle grinder across and back
and forth over the workpiece.
When using a cutting disc never change the cutting angle other wise
you will stall the disc and angle grinder motor or break the disc.
When cutting, only cut in the opposite direction to the disc rotation.
If you cut in the same direction as the disc rotation the disc may
push itself out of the cut slot.
When cutting very hard material best results can be achieved with a
diamond disc.
When using a diamond disc it will become very hot. If this happens
you will see a full ring of sparks around the rotating disc. Stop
cutting and allow to cool at no load speed for 2-3 minutes.
Always ensure the workpiece is firmly held or clamped to prevent
movement.
Maintenance
Remove the plug from the socket before carrying out any
adjustment, servicing or maintenance.
Your power tool requires no additional lubrication or maintenance.
There are no user serviceable parts in your power tool. Never use
water or chemical cleaners to clean your power tool. Wipe clean
with a dry cloth. Always store your power tool in a dry place. Keep
the motor ventilation slots clean. Keep all working controls free of
dust. Occasionally you may see sparks through the ventilation slots.
This is normal and will not damage your power tool.
If the supply cord is damaged, it must be replaced by the
manufacturer, its service agent or similarly qualified persons in order
to avoid a hazard.
Environmental protection
Waste electrical products should not be disposed of with
household waste. Please recycle where facilities exist. Check
with your local authorities or retailer for recycling advice.
16
Plug replacement
(Uk & ireland only)
If you need to replace the fitted plug then follow the instructions
below.
IMPORTANT
The wires in the mains lead are colored in accordance with the
following code:
BLUE =NEUTR AL BROWN = LIVE
As the colors of the wires in the mains lead of this appliance may not
correspond with the colored markings identifying the terminals in
your plug, proceed as follows. The wire which is colored blue must
be connected to the terminal which is marked with N. The wire
which is colored brown must be connected to the terminal which
is marked with L.
Note: If a moulded plug is fitted and has to be removed take great
care in disposing of the plug and severed cable, it must be destroyed
to prevent engaging into a socket.
Connect
Blue to N
(neutral)
Outer sleeve
firmly clamped
13 Amp fuse approved
to BS1362
Brown L (live)
Cable grip
WARNING!
Never connect live
or neutral wires to
the earth terminal
of the plug. Only
fit an approved
13A BS1363/A
plug and the
correct rated fuse.
17
EC DECLARATION OF
CONFORMITY
We,
Positec Power Tools (Europe) Ltd, PO Box 152,
Leeds, LS10 9DS,UK
Declare that the product,
Description WORX Angle grinder
Type WU736 WU736.1 WU737 WU737.1 WU743 WU743.1
WU743L WU745 WU745.1(700-749-designation of machinery,
representative of Angle Grinder)
Function Peripheral and lateral grinding
Complies with the following Directives,
EC Machinery Directive 2006/42/EC
•
EC Low Voltage Directive 2006/95/EC
•
EC Electromagnetic Compatibility Directive 2004/108/EC
•
Standards conform to
EN 55014-1 EN 55014-2 EN 61000-3-2
EN 61000-3-3 EN 60745-1 EN 60745-2-3
The person authorized to compile the technical file,
Name Russell Nicholson
Address Positec Power Tools (Europe)Ltd, PO Box152,
Leeds,LS10 9DS,UK
2012/02/09
Leo Yue
POSITEC Quality Manager
18
20
Copyright © 2012, Positec. All Rights Reserved.
2PGA21PPK11002A1
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