Milwaukee Tool 2780-21 User Manual

Page 2

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PERSONAL SAFETY

GENERAL POWER TOOL SAFETY WARNINGS

WORK AREA SAFETY

ELECTRICAL SAFETY

• Keep work area clean and well lit. Cluttered or

dark areas invite accidents.

• Do not operate power tools in explosive atmos-

pheres, such as in the presence of fl ammable
liquids, gases or dust.
Power tools create sparks
which may ignite the dust or fumes.

• Keep children and bystanders away while

operating a power tool. Distractions can cause
you to lose control.

• 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.
Unmodifi ed plugs and matching outlets will
reduce risk of electric shock.

• 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.

• Do not expose power tools to rain or wet condi-

tions. Water entering a power tool will increase
the risk of electric shock.

• 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.

• 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.

• 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.

result in personal injury.

• Do not overreach. Keep proper footing and

balance at all times. This enables better control
of the power tool in unexpected situations.

• Dress properly. Do not wear loose clothing or

jewellery. Keep your hair, clothing and gloves
away from moving parts.
Loose clothes, jewel-
lery or long hair can be caught in moving parts.

• 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.

WARNING

READ ALL SAFETY WARNINGS AND ALL INSTRUCTIONS.

Failure to follow the warnings and instructions may result in electric shock, fi re 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.

POWER TOOL USE AND CARE

• 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.

• 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.

• 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 pre-
ventive safety measures reduce the risk of starting
the power tool accidentally.

• Store idle power tools out of the reach of chil-

dren 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.

• 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.

• Keep cutting tools sharp and clean. Properly

maintained cutting tools with sharp cutting edges
are less likely to bind and are easier to control.

• 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.

• 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 infl uence of drugs, alcohol or medication.
A
moment of inattention while operating power tools
may result in serious personal injury.

• 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.

• 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 fi nger on the switch or energising power tools
that have the switch on invites accidents.

• 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

• Recharge only with the charger specifi ed by

the manufacturer. A charger that is suitable for
one type of battery pack may create a risk of fi re
when used with another battery pack.

• Use power tools only with specifi cally desig-

nated battery packs. Use of any other battery
packs may create a risk of injury and fi re.

• When battery pack is not in use, keep it away

from other metal objects like paper clips,

BATTERY TOOL USE AND CARE

tection must be capable of stopping fl ying debris
generated by various operations. The dust mask
or respirator must be capable of fi ltrating particles
generated by your operation. Prolonged exposure
to high intensity noise may cause hearing loss.

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 fl y away and cause injury beyond immediate
area of operation.

Hold the power tool by insulated gripping

surfaces only, when performing an operation
where the cutting accessory may contact hid-
den wiring.
Contact with a “live” wire will also
make exposed metal parts of the power tool “live”
and could give the operator an electric shock.

Never lay the power tool down until the ac-

cessory has come to a complete stop. The
spinning accessory may grab the surface and
pull the power tool out of your control.

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.

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.

Do not operate the power tool near fl ammable

materials. Sparks could ignite these materials.

Do not use accessories that require liquid

coolants. Using water or other liquid coolants
may result in electrocution or shock.

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 acces-
sory’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.
Maintain a fi rm 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 kick-
back forces, if proper precautions are taken.

Never place your hand near the rotating acces-

sory. Accessory may kickback over your hand.

Do not position your body in the area where

power tool will move if kickback occurs. Kick-

SPECIFIC SAFETY RULES

This power tool is intended to function as a

grinder, sander, wire brushing or cut-off tool.
Read all safety warnings, instructions, illus-
tr ations and specifi cations provided with this
power tool.
Failure to follow all instructions listed
below may result in electric shock, fi re and/or se-
rious injury

.

Operations such as polishing are not recom-

mended to be performed with this power tool. Op-
erations for which the power tool was not designed
may create a hazard and cause personal injury.

Do not use accessories which are not specifi -

cally designed and recommended by the tool
manufacturer.
Just because the accessory can
be attached to your power tool, it does not assure
safe operation.

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 fl y apart.

The outside diameter and the thickness of your

accessory must be within the capacity rating
of your power tool.
Incorrectly sized accesso-
ries cannot be adequately guarded or controlled.

The arbour size of wheels, fl anges, backing

pads or any other accessory must properly fi t
the spindle of the power tool.
Accessories with
arbour holes that do not match the mounting hard-
ware of the power tool will run out of balance, vi-
brate excessively and may cause loss of control.

Do not use a damaged accessory. Before

each use inspect the accessory such as
abrasive wheels for chips and cracks, back-
ing 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.

Wear personal protective equipment. Depend-

ing on application, use face shield, safety gog-
gles or safety glasses. As appropriate, wear
dust mask, hearing protectors, gloves and
workshop apron capable of stopping small
abrasive or workpiece fragments.
The eye pro-

SERVICE

coins, keys, nails, screws, or other small metal
objects that can make a connection from one
terminal to another.
Shorting the battery terminals
together may cause burns or a fi re.

• Under abusive conditions, liquid may be eject-

ed from the battery; avoid contact. If contact
accidentally occurs, fl ush with water. If liquid
contacts eyes, additionally seek medical help.
Liquid ejected from the battery may cause irritation
or burns.

• Have your power tool serviced by a qualifi ed

repair person using only identical replacement
parts.
This will ensure that the safety of the power
tool is maintained.

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