DeWalt D28492, D28493, D28490, D28491 Instruction Manual

D28492, D28493

Heavy-Duty Angle Grinder

INSTRUCTION MANUAL

English 1

Simplified Chinese 10

English

1

SAVE THESE INSTRUCTIONS

WARNING! Read and understand all instructions. Failure to
follow all instructions listed below, may result in electric shock, fire
and/or serious personal injury.

General Safety Instructions

Technical data

WORK AREA

• Keep your work area clean and well lit. Cluttered benches

and dark areas invite accidents.

• 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.

• Keep bystanders, children, and visitors away while operat-

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

ELECTRICAL SAFETY

• Grounded tools must be plugged into an outlet properly in-

stalled and grounded in accordance with all codes and

ordinances. Never remove the grounding prong or modify

power supply system. Applicable only to Class II (double
insulated) tools.

• Avoid body contact with grounded surfaces such as pipes,

radiators, ranges and refrigerators. There is an increased risk

of electric shock if your body is grounded.

• Don’t expose power tools to rain or wet conditions. Water
entering a power tool will increase the risk of electric shock.

• Do not abuse the cord. Never use the cord to carry the tools
or pull the plug from an outlet. Keep cord away from heat, oil,

sharp edges or moving parts. Replace damaged cords immedi­ately. Damaged cords increase the risk of electric shock.

PERSONAL SAFETY

• Stay alert, watch what you are doing and use common
sense when operating a power tool. Do not use tool while
tired or under the influence of drugs, alcohol, or medica­tion. A moment of inattention while operating power tools may

result in serious personal injury.

D28492 D28493 D28492-B1 D28493-B1

Voltage Volt 220V 220V 220-240V 220-240V

Power input W 2200W 2200W 2200W 2200W

No-Load speed min

-1

6500 8500 6500 8500

Wheel diameter mm 230 180 230 180

Spindle M14 M14 M14 M14

Net weight kg 4.6 4.6 4.6 4.6

the plug in any way. Do not use any adapter plugs. Check
with a qualified electrician if you are in doubt as to whether
the outlet is properly grounded. If the tools should electrical-

ly malfunction or break down, grounding provides a low resist­ance path to carry electricity away from the user. Applicable

only to Class I (grounded) tools.

• Double insulated tools are equipped with a polarized plug
(one blade is wider than the other.) This plug will fit in a
polarized outlet only one way. If the plug does not fit fully in
the outlet, reverse the plug. If it still does not fit, contact a
qualified electrician to install a polarized outlet. Do not

change the plug in any way. Double insulation eliminates the
need for the three wire grounded power cord and grounded

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2

• Dress properly. Do not wear loose clothing or jewelry.
Contain long hair. Keep your hair, clothing, and gloves
away from moving parts. Loose clothes, jewelry, or long hair

can be caught in moving parts. Air vents often cover moving
parts and should also be avoided.

• Avoid accidental starting. Be sure switch is off before plug­ging in. Carrying tools with your finger on the switch or plugging

in tools that have the switch on invites accidents.

• Remove adjusting keys or wrenches before turning the tool
on. A wrench or a key that is left attached to a rotating part of

the tool may result in personal injury.

• Do not overreach. Keep proper footing and balance at all
times. Proper footing and balance enables better control of the

tool in unexpected situations.

• Use safety equipment. Always wear eye protection. Dust
mask, non-skid safety shoes, hard hat, or hearing protection
must be used for appropriate conditions.

TOOL USE AND CARE

• Use clamps or other practical way to secure and support
the workpiece to a stable platform. Holding the work by hand

or against your body is unstable and may lead to loss of control.

• Do not force tool. Use the correct tool for your application.

The correct tool will do the job better and safer at the rate for
which it is designed.

• Do not use tool if switch does not turn it on or off. Any tool
that cannot be controlled with the switch is dangerous and must
be repaired.

• Disconnect the plug from the power source before making
any adjustments, changing accessories, or storing the tool.

Such preventative safety measures reduce the risk of starting
the tool accidentally.

• Store idle tools out of reach of children and other untrained

persons. Tools are dangerous in the hands of untrained users.

• Maintain tools with care. Keep cutting tools sharp and

clean. Properly maintained tools, with sharp cutting edges are

less likely to bind and are easier to control.

• Check for misalignment or binding of moving parts, break­age of parts, and any other condition that may affect the
tools operation. If damaged, have the tool serviced before

using. Many accidents are caused by poorly maintained tools.

• Use only accessories that are recommended by the manu­facturer for your model. Accessories that may be suitable for

one tool may become hazardous when used on another tool.

SERVICE

• Tool service must be performed only by qualified repair
personnel. Service or maintenance performed by unqualified

personnel could result in a risk of injury.

• When servicing a tool, use only identical replacement parts.

Follow instructions in the Maintenance section of this manual.
Use of unauthorized parts or failure to follow Maintenance
instructions may create a risk of electric shock or injury.

Additional Specific Safety Instructions
for Grinders

• Always use proper guard with grinding wheel. A guard pro­tects operator from broken wheel fragments and wheel contact.

• Accessories must be rated for at least the speed recom­mended on the tool warning label. Wheels and other acces-

sories running over rated speed can fly apart and cause injury.
Refer to the table below. Accessory ratings are above rated no­load tool speeds because actual tool speeds may vary.

NOTE: The rated no load tool speed is printed on the name plate
and embossed on the gear case.

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CAUTION: Use extra care when grinding into a corner because a
sudden, sharp movement of the grinder may be experienced when the
wheel contacts a secondary surface.

• Clean out your tool often, especially after heavy use. Dust

and grit containing metal particles often accumulate on interior
surfaces and could create an electric shock hazard.

CAUTION: Wear appropriate personal hearing protection dur-

ing use. Under some conditions and duration of use, noise from this

product may contribute to hearing loss.

WARNING: Some dust created by power sanding, sawing, grind­ing, drilling, and other construction activities contains chemicals
known to cause cancer, birth defects, or other reproductive harm.
Some examples of these chemicals are:

• lead from lead-based paints,

• crystalline silica from bricks and cement and other masonry
products, and

• arsenic and chromium from chemically-treated lumber (CCA).

Your risk from these exposures varies, depending on how often you
do this type of work. To reduce your exposure to these chemicals:
work in a well ventilated area, and work with approved safety equip­ment, such as those dust masks that are specially designed to fil­ter out microscopic particles.

• Avoid prolonged contact with dust from power sanding,

sawing, grinding, drilling, and other construction activities.
Wear protective clothing and wash exposed areas with
soap and water. Allowing dust to get into your mouth, eyes, or

lay on the skin may promote absorption of harmful chemicals.

• The label on your tool may include the following symbols.

V ..........volts A..............amperes

Hz ........hertz W ............watts

min ......minutes ............alternating current

• Hold tool by insulated gripping surfaces when performing
an operation where the cutting tool may contact hidden
wiring or its own cord. Contact with a “live” wire will make

exposed metal parts of the tool “live” and shock the operator.

• Before using, inspect recommended accessory for cracks
or flaws. If such a crack or flaw is evident, discard the acces-

sory. The accessory should also be inspected whenever you
think the tool may have been dropped.

• When starting the tool with a new or replacement wheel, or
a new or replacement wire brush installed, hold the tool in
a well protected area and let it run for one minute. If the

wheel has an undetected crack or flaw, it should burst in less
than one minute. If the wire brush has loose wires, they will be
detected. Never start the tool with a person in line with the
wheel. This includes the operator.

• In operation, avoid bouncing the wheel or giving it rough
treatment. If this occurs, stop the tool and inspect the wheel.

• Direct sparks away from operator, bystanders or flammable
materials. Sparks may be produced while using a sander or

grinder. Sparks may cause burns or start fires.

• Always use side handle. Tighten the handle securely. The
side handle should always be used to maintain control of the tool
at all times.

....direct current

n

o ............no load speed

........Class II Construction …/min......revolutions or

........earthing terminal ................reciprocation per

........safety alert symbol ................minute

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Features

SWITCH

The tool is controlled by a trigger switch (A). A lock-on button (B)
provides increased comfort in extended use applications.

MULTIPLE SIDE HANDLE POSITIONS

The side handle can be properly positioned in two locations based
on personal preference and application. The side handle must be
used at all times to maintain proper control of the tool.

SPINDLE LOCK

The spindle lock pin is provided to pre­vent the spindle from rotating when
installing or removing wheels. Operate
the spindle lock pin only when the tool is
turned off and unplugged from the power
source. To engage the lock, depress the
spindle lock button (C) and rotate the
spindle until you are unable to rotate it
further.
NOTE: Never depress the spindle lock button while the grinder is
running. Never turn on the grinder while the spindle lock button is
depressed. Damage to your tool may result.

MOUNT

The grinder is equipped with a mount, enabling easy wheel instal­lation and removal.

Accessories and Attachments

It is important to choose the correct guards, backing pads
and flanges to use with grinder accessories. See the chart on
pages 5 for information on choosing the correct accessories.

C

FAMILIARIZATION

Large Angle Grinders and Large Angle Sanders are designed for
heavy material removal in extended use applications. The following
grinders and sanders are described in this manual.

Components

A. Trigger Switch
B. Lock On Button
C. Spindle Lock
D. Guard
E. Side Handle

A

B

D

E

C

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5

CAUTION: Accessories must be rated for at least the speed
recommended on the tool warning label. Wheels and other acces­sories running over rated speed can fly apart and cause injury.

NOTE: Wheel size must match guard size; i.e., a new 180mm wheel may not be used with a
230mm guard. The bottom surface of wheel must be inside the bend of the guard lip.