Worx Professional WU820 User manual

ANGLE GRINDER
תיווז תזחשמ WU820 WU830

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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
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.
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.

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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.
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, 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) Threaded mounting of accessories
must match the grinder spindle thread.
For accessories mounted by flanges,
the arbour hole of the accessory must
fit the locating diameter of the flange.
Accessories 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, backing pad for cracks,
tear or excess wear, 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.
h) Wear personal protective equipment.
Depending on application, use face
shield, safety goggles or safety

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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.
p) Do not use accessories that require
liquid coolants. Using water or other liquid
coolants may result in electrocution or shock.
q) 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 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

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woodcarving blade or toothed saw
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:
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
INSTRUCTIONS FOR
CUTTING-OFF OPERATIONS
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 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.
ADDITIONAL SAFETY
INSTRUCTIONS
1. Power tools should be fed only from the
mains source through the circuit breaker
to a leakage current, operating at a current
of no more than 0.03 amperes. Check the
safety of the circuit breaker once a month
using the control button.
2. Goggles and hearing protection should be

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used when using tools.
Device safety warnings
Common safety warnings for grinding,
grinding, wire brushing, or rough cutting:
• These tools are designed to function as
grinding, grinding, brushing or rough
cutting. Read all the safety warnings,
instructions, illustrations, and specifications
that came with this tool. Failure to comply
with any of the above guidelines may result
in electric shock, fire and / or serious injury.
• This tool is not recommended for
corrosion. Performing operations that are
not intended for the device may endanger
you and may result in injury.
• The auxiliary equipment not intended
or recommended for use by the tool
manufacturer should not be used. Just
because the accessory can be connected to
your gadgets does not mean that you are
guaranteed safety in use.
• The speed of the utilities must be at least
equal to the maximum speed specified in
the device. Accessories that move faster
than their rated speed can be broken, take
out the machine and fly.
• The outer diameter and thickness of the
accessory shall be within the capacity of the
tool for evaluation. Auxiliary accessories
that are not the right size cannot be
maintained or controlled properly.
• The size of the sucker for discs, fingers,
backup pads or any other accessories must
match the skills of the tools. Additional
equipment with sukkah holes that are
incompatible with the tool mounting
platform is unbalanced, will be excessively
shaken and may cause obstruction.
• Do not use damaged accessories. Before
each use, check accessories such as
grinding discs and make sure there are
no chips or cracks, check the support pads
for excessive cracks, tears, or grinding,
and make sure that the wire brush does
not contain loose or cracked wires. If the
tools or utilities fell, check that they are not
damaged and that no additional extensions
are installed. After checking and attaching
the accessory, keep yourself and spectators
away from the accessory rotary plane and
run the tool at full speed, without loading,
for one minute. Auxiliary accessories that
are normally damaged will be broken
during test time.
• Assembling of personal protective
equipment. Depending on use, use a face
shield, safety glasses, or safety mask. As
required, place a dust mask, earmuffs,
gloves, and a workshop gown capable
of keeping small rough particles. Eye
protection equipment should be able to
stop flying debris left by various operations.
The dust mask or ventilator should be
able to filter out the particles produced by
your actions. Prolonged exposure to high-
intensity noise can cause hearing loss.
• Keep pedestrians at a safe distance from
the work area. Every person entering the
work area must wear personal safety
equipment. Cutting off the work piece or
broken accessories may fly and cause
injury outside the immediate work area.
• Hold the tool only with an insulated coating
grip during the procedure as the accessory
may be in contact with the characteristic
wires or its power cord.The following
cutting accessory that comes in contact
with the “direct” power cord may cause the
metal parts of the power tools to expose
the user to power.
• Place the power cord away from the rotary
accessory. If you lose control of the tools,
the cable may be cut or torn and your arm
may extend to the rotating accessory.
• Never place the tools before the accessory
stops completely.The rotary accessory may
attach to the surface and remove the tool
from your control.
• Do not operate the tool while holding it
next to the body. Accidental contact with
the revolving accessory can cause a fit in
your clothes and thus pull the tools towards
your body.
• Clean the tool air vents regularly.The
engine fan pulls dust into the machine
casing and excessive accumulation of
metallic powder increases the risk of
electric shock.
• Do not operate tools near flammable
materials. Sparks can light these materials.
• Do not use any accessories that require
coolant. Using water or other refrigerants
can cause electric shock or shock.
Page and associated warnings:

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• The page is a sudden response to the
turntable, backup platforms, requests, or
any other extension that is installed or
detected. Pressure or grip causes a sudden
stop of the rotary attachment, which in turn
causes the fully uncontrolled tools to push
strongly in the opposite direction to rotate
the attachment at the attachment point.
For example, if a hard disk is detected or
installed in the workbench, the edge of the
disc that enters the disc point can be etched
into the surface of the material, causing
the disc to climb or push out.The disc
may jump in the direction or away from
the player, depending on the direction of
movement of the disc at the point of the
disc. Rough disks may also break under
these conditions.
The disadvantage is the result of improper
use of tools and or incorrect processes or
operating conditions and can be prevented
by taking the above precautions.
• Never place your hands near the rotary
accessory.The additional accessory may
help to move around.
• Keep your body away from the area where
the tool will move if page movement
occurs.The column will rotate the tool in
the opposite direction to the disk position at
the perception point.
• Use extreme caution when working on
sharp corners, edges, and the like. Avoid
jumping or grabbing accessories. Angles,
sharp edges, or pop-ups tend to grab the
rotary accessory and cause loss of control
or thrust.
• Do not connect a saw chain with a
questionable piece of wood or sawn.These
codes often generate the page and result in
loss of control of the tool.
Additional safety instructions for milling
and grinding operations
• Use only the recommended disk types for
your specific tools and protection tools
designed for the selected disk. Disks that
are not properly designed cannot be saved
and are therefore unsafe.
• The condom must be securely installed
on the tool and properly positioned for
maximum security, so that the minimum
disk size is detected in the user’s direction.
The protector helps prevent you from
breaking the disk particles and accidental
contact with the disk.
• Disks should be used only in the application
recommended to them. For example: Do
not sharpen the side of the cutting disc.
Coarse cutting discs intended for peripheral
grinding; lateral forces exerted on these
discs may cause them to crack.
• Always use undamaged discs in the right
size and shape for your chosen disc.
Appropriate disks support the disc, which
reduces the likelihood of a disk fracture.
Cutting disc extensions may be different
from cutting disc extensions.
• Worn disks from larger tools should not be
used. Discs designed for large pots do not
match the higher speed of smaller pots and
may collapse.
Additional safety instructions for rough
cutting operations
• Do not “stick” the cutting disc or press
firmly. Don’t try to deepen the pieces.
Excessive pressure on the disc increases
the load and sensitivity to deform or bend
the disc inside the pieces, allowing it to be
pushed or broken.
• Do not put your body in a line or behind the
turntable. Because the disc, at the operating
point, moves away from your body, the
possible page may lead the turntable and
tools directly to you.
• When the disc is tied or cut for any
reason, turn off the power tool and keep it
immobile until the disc stops completely.
Never try to remove the cutting disc from
the pieces while it is running, otherwise
it will cause a flap. Corrective check and
corrective action will solve the cause of the
disk attachment.
• Do not restart the cutting procedure on
work materials. Allow the disc to arrive
at full speed and carefully reinsert it into
pieces.The disc may stick, move up, or
repel if the tool is restarted when it is
locked inside the material.
• Support modules or any other large work
material to reduce the risk of page or page
penetration. Large work materials tend
to collapse under their weight.The sub-
workpiece shall be placed near the cutting
line and near the edge of the workpiece on