DeWalt D28409 Instructions Manual

D28409

2

B

A

D

C

FIG 1

FIG 3

FIG 2

FIG 4

H

G

E

F

FIG 5

FIG 7

FIG 6

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E N G L I S H

D28409 SANDER

Congratulations!

You have chosen a DEWALT tool. Years of experience,
thorough product development and innovation make
D

EWALT one of the most reliable partners for professional

power tool users.

Technical data

Power input
No-load speed
Spindle size
Pad size

Weight

DW849

W
Min

-1

mm
Kg

2,200
5,000
M14
172

5.2

General Safety Rules

WARNING! Read all instructions. Failure to
follow all instructions listed below may result
in electric shock, fire and/or serious injury.
The term “power tool” in all of the warnings
listed below refers to your mains-operated
(corded) power tool or battery-operated
(cordless) power tool.

SAVE THESE INSTRUCTIONS

1) WORK AREA SAFETY

Keep work area clean and well lit. Cluttered or 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 children and bystanders away while
operating a power tool. Distractions can cause you

to lose control.

2) ELECTRICAL SAFETY

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.

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
conditions. 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.

a)

b)

c)

Keep cord away from heat, oil, sharp edges or
moving parts. Damaged or entangled cords increase

the risk of electric shock. Replace or repair damaged
cords. Make sure your extension cord is in good
condition. Use only 3-wire extension cords that have
3-prong grounding-type plugs and 3-pole receptacles
that accept the tool’s plug.

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. When using an extension cord, be
sure to use one heavy enough to carry the current
your product will draw. An undersized cord will cause
a drop in line voltage resulting in loss of power and
overheating. The following table shows the correct
size to use depending on cord length and nameplate
ampere rating. If in doubt, use the next heavier
gauge. The smaller the gauge number, the heavier
the cord.

Using an extension cable

If an extension cable is required, use an approved
extension cable suitable for the power input of this tool (see
technical data). The minimum conductor size is 1.5 mm

2

.
When using a cable reel, always unwind the cable
completely.
Also refer to the table below.

a)

b)

c)

d)

e)

Conductor size (mm2) Cable rating (Amperes)

0.75 6

1.00 10

1.50 15

2.50 20

4.00 25

Cable length (m)

7.5 15 25 30 45 60

Voltage Amperes Cable rating (Amperes)

115 0 - 2.0 6 6 6 6 6 10

2.1 - 3.4 6 6 6 6 15 15

3.5 - 5.0 6 6 10 15 20 20

5.1 - 7.0 10 10 15 20 20 25

7.1 -12.0 15 15 20 25 25 -

12.1 -20.0 20 20 25 - - ­230 0 - 2.0 6 6 6 6 6 6

2.1 - 3.4 6 6 6 6 6 6

3.5 - 5.0 6 6 6 6 10 15

5.1 - 7.0 10 10 10 10 15 15

7.1 -12.0 15 15 15 15 20 20

12.1 -20.0 20 20 20 20 25 -

E N G L I S H

3) PERSONAL SAFETY

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.

Use safety equipment. Always wear eye
protection. Safety equipment such as dust mask,

non-skid safety shoes, hard hat, or hearing protection
used for appropriate conditions will reduce personal
injuries.

Avoid accidental starting. Ensure the switch is in
the off-position before plugging in. Carrying power

tools with your finger on the switch or plugging in
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
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, jewellery
or long hair can be caught in moving parts. Air

vents often cover moving parts and should also be
avoided.

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

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 preventive safety

measures reduce the risk of starting the power tool
accidentally.

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.

Maintain power tools. Check for misalignment or
binding of moving parts, breakage of parts and
any other condition that may affect the power
tools 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 and
in the manner intended for the particular type
of power tool, 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

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 Instructions

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.

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.
Clean your tool out periodically.

Do not operate this tool for long periods of time.

Vibration caused by the operating action of this tool
may cause permanent injury to fingers, hands, and
arms. Use gloves to provide extra cushion, take
frequent rest periods, and limit daily time of use.

WARNING: ALWAYS use eye protection.
All users and bystanders must wear eye
protection.

WARNING: Always wear proper personal
hearing protection during use. Under

some conditions and duration of use, noise
from this product may contribute to hearing
loss.

WARNING: ALWAYS use safety glasses.
Everyday eyeglasses are NOT safety
glasses. Also use face or dust mask if
cutting operation is dusty. ALWAYS WEAR
CERTIFIED SAFETY EQUIPMENT:

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.

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

5

a)

b)

c)

d)

e)

f)

g)

a)

b)

c)

d)

e)

a)

f)

g)

•

•

•

•

•

•

•

E N G L I S H

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.

WARNING: Use of this tool can generate
and/or disburse dust, which may cause
serious and permanent respiratory or other
injury. Always use approved respiratory
protection appropriate for the dust exposure.

Direct particles away from face and body.
The label on your tool may include the following
symbols. The symbols and their definitions are as
follows:

V volts
A amperes
Hz hertz
W watts
min minutes
alternating current
direct current

n

0

no load speed
earthing terminal
safety alert symbol
Class II Construction (double insulated)
…/min revolutions or reciprocation per minute
BPM beats per minute

Save these instructions

DESCRIPTION

Sidle handle
Spindle lock
Lock-on button
Trigger switch
Clamp washer
Spindle

Backing pad

Sanding paper

A
B
C
D
E
F
G
H

FEATURES

Side Handle

An side handle is furnished with your tool and can be
installed on either side of the front housing. This handle

should be used at all times to maintain complete control of
the tool.

release the trigger switch once. Do not unplug the tool with
the switch in the locked on condition. Make sure the tool is
not locked on when plugging in. A locked on tool will start
immediately when plugged in.

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Spindle Lock Button (Fig. 1)

WARNING: To reduce the risk of
serious personal injury, turn tool off and
disconnect tool from power source before
making any adjustments or removing/
installing attachments or accessories.

In order to prevent the spindle of the tool from rotating
while installing or removing accessories, a spindle lock
button has been provided in the gear head of the machine.
To lock the spindle, depress and hold the lock button.
NEVER DEPRESS THE SPINDLE LOCK BUTTON WITH
THE TOOL RUNNING OR COASTING.

The tool can be locked on for continuous use by squeezing
the trigger switch fully and depressing the lock button
shown in Figure 2. Hold the lock button in as you gently
release the trigger switch. The tool will continue to run. To
turn the tool off from a locked on position, squeeze and

OPERATION

WARNING: To reduce the risk of
serious personal injury, turn tool off and
disconnect tool from power source before
making any adjustments or removing/
installing attachments or accessories.

Sanding Application

ATTACHING AND REMOVING BACKING PAD
OR SANDING PAPER

(Figures 4, 5, and 6)

To attach the sanding paper, push the hub of the clamp
washer through the center of the backing pad and sanding
paper, as far as it will go, and also through the backing
pad. Engage the clamp washer threads on the tool spindle
and thread assembly clockwise, completely down on the
spindle. Hold the spindle from rotating by engaging the
spindle lock button.

To remove the backing pad and sanding, use a cloth or
glove to protect your hand. Turn the clamp washer assembly

counterclockwise

(Figure 6). Hold the spindle from rotating

by engaging the spindle lock button.

Sanding

(See Figure 7) When using an abrasive disc, hold the tool
so that an angle of 10˚ to 15˚ exists between the disc and
the work. If only the outer edge of the sanding disc is used,
a rough cut will result. If the sanding disc is pressed flat
against the work, the sanding action will be irregular and
bumpy, and the tool will be difficult to control.

MAINTENANCE

WARNING: To reduce the risk of
serious personal injury, turn tool off and
disconnect tool from power source before
making any adjustments or removing/
installing attachments or accessories.

7

N028856

E N G L I S H

Cleaning

Blowing dust, polishing bonnet lint, and grit out of the
motor housing using compressed air is a necessary regular
maintenance procedure. Dust and grit containing metal
particles often accumulate on interior surfaces could create
an electrical shock hazard if not frequently cleaned out.

WARNING: Never use solvents or
other harsh chemicals for cleaning the
non-metallic parts of the tool. These
chemicals may weaken the plastic
materials used in these parts. Use a cloth
dampened only with water and mild soap.
Never let any liquid get inside the tool;
never immerse any part of the tool into
a liquid.

Lubrication

DEWALT tools are properly lubricated at the factory and are
ready for use. Tools should be relubricated regularly every
sixty days to six months, depending on usage. (Tools used
constantly on production or heavy-duty jobs and tools
exposed to heat may require more frequent lubrication.)
This lubrication should only be attempted by trained power
tool repairpersons such as those at D

EWALT service

centers or other authorized service locations.

Motor Brushes

Be sure tool is unplugged before inspecting brushes.
Carbon brushes should be regularly inspected for wear.
To inspect brushes, unscrew the plastic brush inspection
caps (located in the sides of the motor housing) and the
spring and brush assemblies may be withdrawn from the
tool. Keep brushes clean and sliding freely in their guides.
Carbon brushes have varying symbols stamped into them,
and if the brush is worn down to the line closest to the
spring, they must be replaced.

Accessories

Warning: Since accessories, other than
those offered by DEWALT, have not
been tested with this product, use of
such accessories with this tool could be
hazardous. To reduce the risk of injury,
only D

EWALT recommended accessories

should be used with this product.

Use only accessories having a maximum operating speed
at least as high as the highest “NO LOAD RPM” marked
on the tool’s nameplate. This precaution applies to any
accessory on any tool.

Protecting the environment

Separate collection. This product must
not be disposed of with normal household
waste.

Should you find one day that your D

EWALT product needs

replacement, or if it is of no further use to you, do not
dispose of it with household waste. Make this product
available for separate collection.

Separate collection of used products and
packaging allows materials to be recycled
and used again. Re-use of recycled materials
helps prevent environmental pollution and
reduces the demand for raw materials.

Service Information

DEWALT offers a full network of company-owned and
authorized service locations throughout Asia. All D

EWALT

Service Centers are staffed with trained personnel to
provide customers with efficient and reliable power tool
service. Wether you need technical advice, repair, or
genuine factory replacement parts, contact the D

EWALT

location nearest to you.

Notes

DEWALT’s policy is one of continuous improvement
to our products and, as such, we reserve the right to
change product specifications without prior notice.
Standard equipment and accessories may vary by
country.
Product specifications may differ by country.
Complete product range may not be available in all
countries. Contact your local D

EWALT dealers for range

availability.

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