DeWalt DW474 Instruction Manual

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ROTATABLE'

STEEL GUARD

DgWALT...BU,

LT

J O

BSIT

E TO

U Grl

DeWALT high

performance

industrial

tools are made lor America's

toughest industrial and

construction applications. The design

of every

tool in the line

-

from

drills to sanders to

grinders

-

is the resuli

of

rigorous use on

jobsites

and throughout industry. Each

tool is

produced

with

painstaking precision

using advanced manufacturing

systems and intense

qualiÿ

control. Every tool is

checked before it

leaves

the

factory

to make

sure

that it

meets

your

standards for

durabiliÿ, reliabiliÿ

and

power.

DeWALT

Built Jobsite Tough...WE

GUARANTEE lT.

.-':r.:,.

:-r1,,-+;-Ë.4§*æ++

lmportant Salety

lnstructions

WARNING: When using electric

tools, basic safety

precautions

should always be

followed to reduce risk of

fire, electric shock, and

personal

inlury, including the

following:

READ ALL INSTRUCTIONS

Double

lnsulation

Double insulated tools are constructed

throughout with

two

separate

layers of electrical

insulation

or one double

thickness of

insulation

between

you

and the tool's electrical

system.

Tools

built

with this

insulation system are

not intended to be

grounded.

As

a

result,

your

tool is equipped

with a two

prong plug

which

permits you

to use

extension cords

without concem for maintaining

a

ground

connection.

NOTE: Double

insulation does not take the

place

of normal safeÿ

precautions

when operating

this tool. The

insulation system is for

added

protection

against

injury resulting from a

possible

electrical

insulation

failure within the tool.

CAUTION:

WHEN SERVICING USE

ONLY

IDENTICAL

REPLACEMENT

PARTS.

Repair

or

replace damaged cords.

Polarized

Plugs

Polarized

plugs (one

blade is

wider

than

the other) are used on

equipment

to reduce the risk of electric shock.

When

provided,

this

plug

will fit into

a

polarized

outlet only one

way. lf the

plug

does not fit

fully in the outlet, reverse the

plug.

lf it

still

does not fit, contact a

qualified

electrician

to install the

proper

outlet.

Do not change the

plug

in

any

way.

Salety

Instruclions

For All Tools

.

KEEP

WORK AREA CLEAN. Cluttered areas and benches

invite injuries.

.

CONSIDER

WORK AREA ENVIRONMENT.

Don't

expose

power

tools to rain. Don't use

power

tools

in

damp or

wet

locations.

Keep

work area

well lit. Do not use tool

in

presence

of flammable

liquids or

gases.

GUARD

AGAINST

ELECTRIC

SHOCK

Prevent boÜ contact

with

grounded

surtaces.

For example;

pipes,

radiators,

ranges,

and

ref rige rator enclosu

re s.

KEEP CHILDREN

AWAY. Do

not let visitors contact

tool or

extension

cord.

All visitors should be

kept away

from work

area.

STORE

IDLE TOOLS.

When not in use,

tools

should

be stored

in

dry,

and high or

locked-up

plaæ

-

out of

reach

of children.

DON'T

FORCE TOOL.

lt will do

the

iob

better and safer

at the

rate for which

it was

intended.

llSE RIGHT

TOOL. Don't

torce small

tool or attachment

to do

the

iob

of

a

heavy-duty tool.

Don't use tool

for

purpose

not

intended.

DRESS

PROPERLY.

Do

not wear loose clothing

or

iewelry.

They can be caught

in moving

parts.

Rubber

gloves

and

non-

skid tootwear

are

recommended

when working outdoors.

Wear

protective

hair

covering

to contain

long

hair.

USE SAFETy

GLASSES.

Also use

face

or

dust

mask if

operation

is dusÿ.

DON'T

ABUSE CORD.

Never carry

tool by cord or

yank

it to

disconnect

from receptacle.

Keep cord

from heat, oil, and

sharp

edges.

SECURE

WORK.

Use clamps or a

vise to hold

work. lt's safer

than using

your

hand and

it frees both

hands to operate tool.

DON'T OVERREACH.

Keep

proper

footing and balance

at all

times.

MAINTAIN

TOOLS WITH CARE.

Keep tools sharp and

clean

for better and

safer

pertormance.

Follow

instructions

for

lubricating and changing

accessories.

lnspect tool cords

periodically

and

if damaged,

have repaired by

authorized

1

I

_.1

seruice

facilÿ. lnspæt

ertension

ærds

peiodically

and

replace if

damaged.

Keep handles

dry, clean, and lree from

oil and

grease.

DISCONNECT

OR LOCK

OFF TOOLS when

not in use,

before

seruicing,

and

when

changing

accessories,

such as blades, bits,

cutters.

REMOVE

ADJUSTING KEYS

AND WRENCHES.

Form habit

of

checking

to see that keys

and adjusting wrenches

are removed from

tool

before tuming it

on.

AVOID

UN,NTENTIONAL

STARTING. Don't

carry tool with finger

on switch. Be

sure switch is

off

when

plugging

in.

EXTENSION

CORDS. Make

sure

your

ertension cord is in

good

condition. When

using

an ertension cord,

be sure to uæ one heavy

enough to

cany the cunent

your product

will draw. An

undersized

cord will

cause a drop in line

voltage resulting in lo*s

of

power

and

overheating.

The following table

shows the correct

size to use

depending on

cord

length

and nameplate

ampere rating. lt in doubt,

use

the next heavier

gage.

The

smaller the

gage

number,

the

heavier the

cord.

OUTDOOR USE EXTENSION

CORDS. When

tool is used

outdoors,

use onÿ

ertension cords intended lor

use outdoors and

so marked.
STAY ALERT. Watch

what

you

are

doing. Use common

sense.

Do

not

operate tool when

you

are tired.

.

CHECK DAMAGED

PARTS.

Before

tufircr

use

of thë tool,

a

guard

or

other

part

that is

damaged

should

be carefully

cheçked

to

determine

that

it will

operate

properly

and

pertorm

its intended

function.

Check for

alignment

of moving

pails,

binding

of moving

parts,

breakage

of

pafts,.

mounting,

and

any other

conditions

that

may

atfect its

operation.

A

guard

or other

part

that is

damaged

should

be

properly

repaired

or replaced

by

an authorized

seruice

center

unless

otherwise indicated

elsewhere

in

this instruction

manual.

Have

defective

switches replaced

by authorized

service

center.

Do not

use tool if switch

does not

tum it

on and off.

.

ALWAYS

WEAR EYE PNOTECNON.

.

KEEP

GIIARDS lN

PLACE.

.

Use only

grinding

wheels

having a maximum

operating speed

at

least

high as

"No

Load RPM" marked

on the

tool's nameplate.

.

Before

using, inspect reæmmended

accessory

for cracks

or flaws. lf

such

a crack

or

flaw is

evident,

discard

the accessory. The

accessory

should

also be inspected

whenever

you

think the

tool

may have

been

dropped.

When

btaiing

the tool

(with

a new

or

replacement

wheel installed)

hold

the tool in

a well

protected

area

and let it run for

one minute. lf

the wheel

has

an undetected

crack or ftaw,

it shoutd

burst in tess

than

one minute.

Never stan the

tæl with

a

person

in line

with the

wheel.

This includes

the

operator.

ln

operation,

avoid bouncing the

wheel or

giving

rt rough

treatment.

lf this

occurs,

stop the tool

and inspect

the wheet.

ALWAYS

USE GUARDS with

depressed

center

wheels

or

flaring

cup

ginding

wheels.

Clean

your

tool out

periodically.

CAUTION:

Some wood

contains

preservatives

such as

copper

chromium

arsenate

(CCA)

which

can be toxic.

When

sanding these

materials

extra care

should be taken

to avoid inhalation

and

minimize

skin

contact.

SAVE THESE INSTRUCTIONS

FOR

FUTURE USE

Volts

r20v

I hon

Minimum

Goge

for

Cond Sets

Totul tengrh

of Cond in Feet

o-25 26-50

5t

-l

00 I 0t

-150

Not more

Thon

Americon

Wire Goge

0

6

l0

12

6 t8

10

t8

12

16

t6

l6
l6

l6

14

1À

14
12
12

16 14 12 Not Recommenderl

COUNTER CLOCKWISE

Ftc.s

-

FIG.1

NOTE:

The

Guard

will fit in

one

position.

lf the holes

are

not

aligned,

rotate

Guard

until they are.

FlG. 4

LOCK

BUTTON

BACKING

HUB

FIBRE

Guard lnstallation

(FlG.l

)

Turn

off

and unplug

grinder.

A wheel

guard

is

packed

with

your grinder

that must

be used

whenever

using

a depressed

center

grinding

wheel.

NOTE: A

special

guard

is

required for

use with a Flaring

Cup

Wheel.

Do not

attempt

to use a flaring

cup wheel

with the wheel

guard

supplied with

your grinder.

(See page

4.)

To install

the

guard

to the

grinder,

place

it over the

spindle, as shown

in Figure

1, and install

the

provided

three

socket head screws

(5/32"

hex)

and

lock

washers in

the three holes in

the housing

adjacent

to the spindle.

Tighten these

screws

securely.

NOTE:

The

guard

will

only fit in one

position.

lf the holes

are not

aligned,

loosen

the

hex

nut, rotate

guard

until they

are and

retighten

the hex nut.

An

adjustable

skirt

guard

is

available

at extra cosl lor

use with flaring

cup wheels

only.

(wheels

also

available at

extra cost) The

adjustable

skirt

guard

installs

to the

same center three

holes

used to mount

the

wheel

guard

included

with

the tool. The

depressed

center wheèl

guard

must

be

removed

before mounting

the adjustable

skirt

guard.

NOTE:

NEVER

ATTEMPT

TO

USE ANY TYPE

OF GRINDING

WHEEL

WITHOUT

THE PROPER

GUARD. TO

DO

SO

WOULD

BE

EXTREMELY

HMARDOUS.

Swr'tch

Operation

(FIG.

2,

To

start tool

press

buttons A

and B at the

same time. For continuous

operation

with

switch locked

ON

press

only button B. To release

switch

press

button A and release.

LOGK

BUTTON

SANDING

DISC

BACKING

CLOCKWISE