ANGLE GRINDER
EN
RS4719/RS4720
RS4719/RS4720
5
1
2
3
4
6
9
ON
OFF
7
8
RS4719/RS4720
9
ON
OFF
A
B
C1
C3
D
7
4
8
7
4
8
C2
E
ANGLE GRINDER
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COMPONENT LIST
1
Spindle Locking Button
2
On/Off Switch
3
Wheel Guard For Grinding
4
Disc *
5
Auxiliary Handle
6
Spanner
7
Inner Flange
8
Outer Flange
9
Wheel Guard For Cutting * (only for RS4720)
* Not all the accessories illustrated or described are included in standard delivery.
Accessories
RS4719
Auxiliary handle
1
Wheel guard for grinding
1
Spanner1
RS4720
Auxiliary handle
1
Wheel guard for grinding
1
Wheel guard for cutting
1
Spanner1
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.
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
mains-operated (corded) power tool or batteryoperated (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.
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ANGLE GRINDER
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
6
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result in personal injury.
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
these devices 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
ANGLE GRINDER
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.
Safety instructions for all
operations
Safety Warnings Common for Grinding or Abrasive
Cutting Off Operations:
a) This power tool is intended to function as
a grinder or cut-off tool. Read all 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 injury.
b) Operations such as sanding, wire brushing
or polishing are not recommended to be
performed with this power tool. Operations
for which the power tool was not designed may
create a hazard and cause personal injury.
c) Do not use accessories which are not
specifically designed and recommended
by the tool manufacturer. Just because the
accessory can be attached to your power tool, it
does not assure safe operation.
d) 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 break and fly apart.
e) The outside diameter and the thickness of your
accessory must be within the capacity rating
of your power tool. Incorrectly sized accessories
cannot be adequately guarded or controlled.
f) 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.
g) Do not use a damaged accessory. Before each
use inspect the accessory such as abrasive
wheels for chips and cracks or cracked
wires. If power tool or accessory is dropped,
inspect for damage or install an undamaged
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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.
h) Wear personal protective equipment.
Depending on application, use face
shield, safety goggles or safety glasses.
As appropriate, wear dust mask, hearing
protectors, gloves and workshop 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.
i)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
accessory may fly away and cause injury beyond
immediate area of operation.
j)Hold power tool by insulated gripping surfaces
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 could give the operator an
electric shock.
k) 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.
l) 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.
m) 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.
n) 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.
o) Do not operate the power tool near flammable
materials. Sparks could ignite these materials.
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ANGLE GRINDER
p) Do not use accessories that require liquid
coolants. Using water or other liquid coolants
may result in electrocution or shock.
Further safety 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.
a) 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.
b) Never place your hand near the rotating
accessory. Accessory may kickback over your
hand.
c) Do not position your body in the area where
power tool will move if kickback occurs.
Kickback will propel the tool in direction
opposite to the wheel’s movement at the point of
snagging.
d)Use special care when working corners, sharp
edges etc. Avoid bouncing and snagging the
accessory. Corners, sharp edges or bouncing
have a tendency to snag the rotating accessory
and cause loss of control or kickback.
e) Do not attach a saw chain woodcarving blade
or toothed saw blade. Such blades create
frequent kickback and loss of control.
Safety Warnings Specific for Grinding and
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Abrasive Cutting-Off Operations:
a)Use only wheel types that are recommended
for your power 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
b) The guard must be securely attached to the
power tool and positioned for maximum
safety, so the least amount of wheel is
exposed towards the operator. The guard
helps to protect the operator from broken wheel
fragments, accidental contact with wheel and
sparks that could ignite clothing.
c)Wheels must be used only for recommended
applications. For example: do not grind with
the side of cut-off wheel. Abrasive cut-off
wheels are intended for peripheral grinding, side
forces applied to these wheels may cause them
to shatter.
d) Always use undamaged wheel flanges that
are of correct 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.
e) 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 Warnings
Specific for Abrasive
Cutting-Off Operations:
a) Do not “jam” the cut-off wheel or apply
excessive pressure. Do not attempt 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.
b) 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.
c)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
ANGLE GRINDER
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.
d) 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.
e) Support panels or any oversized workpiece
to minimize the 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.
f)Use extra caution when making a “pocket cut”
into existing walls or other blind areas. The
protruding wheel may cut gas or water pipes,
electrical wiring or objects that can cause
kickback.
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Symbol
To reduce the risk of injury, user must read
instruction manual
Warning
Wear ear protection
Wear eye protection
Wear dust mask
RCM marking
Double insulation
9
ANGLE GRINDER
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TECHNICAL DATA
RS4719
Voltage
Power
RS4720
230-240V~50Hz
750W
Rated speed
900W
12000/min
Disc size
Ø100mm
Ø125mm
Disc bore
Ø16mm
Ø22.2 mm
M10
M14
Spindle thread
Protection class
Machine weight
/II
1.8kg
2kg
OPERATING INSTRUCTIONS
Note: Before using the tool, read the
instruction book carefully.
1. SLIDE ON/OFF SWITCH (See Fig. A)
To start the power tool, first press the back of on/off
switch (2), then push the on/off switch (2) forward.
To lock the on/off switch (2), press the on/off switch
(2) down at the front until it engages.
To switch off the power tool, briefly press down the
back of the on/off switch (2) and then release it.
2. HAND GRIP AREAS
Always hold your angle grinder firmly with both
hands when operating.
3. ADJUSTABLE AUXILIARY HANDLE (See Fig. B)
You have the option of two working positions to
provide the safest and most comfortable control of
your angle grinder. The handle is screwed clockwise
into either hole on the sides of the gear case.
Note: This handle should be used at all times to
maintain complete control of the tool.
4. spindle lock button(1)
Only be used when changing a disc. Never press
when the disc is rotating.
5. FITTING THE DISCS
Put the inner flange onto the tool spindle. Ensure it
is located on the two flats of spindle (See Fig. C1).
Place the disc on the tool spindle and inner flange.
Ensure it is correctly located. Fit the threaded
outer flange making sure it is facing in the correct
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direction for the type of disc fitted. For grinding
discs, the flange is fitted with the raised portion
facing towards the disc. For cutting discs, the flange
is fitted with the raised portion facing away from the
disc (See Fig. C2).
Press in the spindle lock button and rotate the
spindle by hand until it is locked. Keeping the lock
button pressed in, tighten the outer flange with the
spanner provided. (See Fig. C3)
6. GUARD ADJUSTMENT (See Fig. D)
Before any work on the machine itself, pull the
mains plug.
For work with grinding or cutting discs, the wheel
guard must be mounted.
Wheel Guard for Grinding
Turn off and unplug the tool. Never operate grinder
without guard in place. Adjust the guard to protect
your hands and to direct grind debris. Loosen the
the guard bolt. Position the guard at the required
angle. Then tighten the the guard bolt.
Wheel Guard for Cutting
Warning! For cutting metal, always work with
the wheel guard for cutting (9).
The wheel guard for cutting (9) is mounted in the
same manner as the wheel guard for grinding (3).
7. TO USE THE GRINDER (See Fig. E)
Attention: Do not switch the grinder on
whilst the disc is in contact with the
workpiece. Allow the disc to reach full speed
before starting to grind.
Hold your angle grinder with one hand on the main
handle and other hand firmly around the auxiliary
handle.
Always position the guard so that as much of the
exposed disc as possible is pointing away from you.
Be prepared for a stream of sparks when the disc
touches the metal.
For best tool control, material removal and minimum
overloading, maintain an angle between the disc
and work surface of approximately 15° -30° when
grinding.
Use caution when working into corners as contact
with the intersecting surface may cause the grinder
to jump or twist.
When grinding is complete allow the workpiece to
cool. Do not touch the hot surface.
ANGLE GRINDER
8. 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.
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.
OVERLOAD
Overloading will cause damage to the motor of your
angle grinder. This can happen if your angle grinder
is subjected to heavy use for prolonged periods of
time.
Do not in any circumstances, attempt to exert too
much pressure on your angle grinder to speed up
your work.
If your angle grinder becomes too hot, run you angle
grinder under no load for 2-3 minutes until it has
cooled to normal operation temperature.
WORKING HINTS FOR YOUR ANGLE
GRINDER
1. Your angle grinder is useful for both cutting
through metals, i.e. for removing screw heads, and
also for cleaning / preparing surfaces, i.e. before and
after welding operations.
2. Different types of wheel/cutter will allow the
grinder to meet various needs. Typically, grinding
wheels and cutting discs are available for mild
steel, stainless steel, stone and brick. Diamond
impregnated discs are available for very hard
materials.
3. If the grinder is used on soft metals such as
aluminum the wheel will soon clog and will have to
be changed.
4. At all times, let the grinder do the work, do not
force it or apply excessive pressure to the wheel/
disc.
5. If cutting a slot ensure that the cutter is kept
aligned with the slot, twisting the cutter may cause
the disc to shatter. If cutting through thin sheet, only
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allow the cutter to just project through the material,
excessive penetration can increase the chance of
causing damage.
6. If cutting stone or brick, it is advisable to use a
dust extractor.
MAINTENANCE
Remove the plug from the socket before carrying out
any adjustment, servicing 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.
TROUBLESHOOTING
Although your new angle grinder is really very
simple to operate, if you do experience problems,
please check the following:
1. If your grinder will not operate check the power at
the main plug.
2. If your grinder wheel wobbles or vibrates, check
that outer flange is tight, check that the wheel is
correctly located on the flange plate.
3. If there is any evidence that the wheel is damaged
do not use as the damaged wheel may disintegrate,
remove it and replace with a new wheel. Dispose of
old wheels sensibly.
4. If working on aluminum or a similar soft alloy, the
wheel will soon become clogged and will not grind
effectively.
Staple your purchase receipt here
Before returning this product for
warranty or any other reason, please call.
POSITEC AUSTRALIA PTY LIMITED
ABN 14 101 682 357
Unit 15, 23 Narabang Way Belrose 2085 NSW
Australia
FREE CALL 1300 889 028
EMAIL:office.sales@positec.com.au
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Copyright © 2013, Positec. All Rights Reserved.
Made In PRC
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