• Home
• Brands
• DeWalt Manuals
• DeWalt D55146
• DeWalt OIL FREE PORTABLE AIR COMPRESSOR D55146 Important Safety Instructions Manual

DeWalt OIL FREE PORTABLE AIR COMPRESSOR D55146 Important Safety Instructions Manual

Download Instruction manual of DeWalt D55146 Air Compressor for Free or View it Online on All-Guides.com.

1

2

3

4

5

6

7

INSTRUCTION MANUAL

GUIDE D'UTILISATION

MANUAL DE INSTRUCCIONES

D55146

Oil Free Portable Air Compressor

Compresseur d’air portatif sans huile

Compresor de aire sin aceite portátil

INSTRUCTIVO DE OPERACIÓN, CENTROS DE SERVICIO

Y PÓLIZA DE GARANTÍA. ADVERTENCIA: LÉASE ESTE

INSTRUCTIVO ANTES DE USAR EL PRODUCTO.

DeWALT Industrial Tool Co., 701 East Joppa Road, Baltimore, MD 21286

(AUG10) Part No. N087150 D55146 Copyright © 2007, 2008, 2009, 2010 D

eWALT

The following are trademarks for one or more DeWALT power tools: the yellow and black color scheme; the “D”

shaped air intake grill; the array of pyramids on the handgrip; the kit box configuration; and the array of lozenge-

shaped humps on the surface of the tool.

If you have questions or comments, contact us.

Pour toute question ou tout commentaire, nous contacter.

Si tiene dudas o comentarios, contáctenos.

1-800-4-De

Definitions: Safety Guidelines

The definitions below describe the level of severity for each signal word. Please read

the manual and pay attention to these symbols.

DANGER: Indicates an imminently hazardous situation which, if not avoided, 

result in death or serious injury.

WARNING: Indicates a potentially hazardous situation which, if not avoided, 

result in death or serious injury.

CAUTION: Indicates a potentially hazardous situation which, if not avoided, may

result in minor or moderate injury.

NOTICE: Indicates a practice  which, if not avoided,

may result in 

IF YOU HAVE ANY QUESTIONS OR COMMENTS ABOUT THIS OR ANY D

e

WALT TOOL,

CALL US TOLL FREE AT: 1-800-4-D

e

WALT (1-800-433-9258)

Important Safety Instructions

WARNING: Do not operate this unit until you read this instruction manual for safety,

operation and maintenance instructions.

WARNING: This product contains chemicals known to the State of California to cause

cancer, and birth defects or other reproductive harm. 

WARNING: Some dust contains chemicals known to the State of California to cause

cancer, birth defects or other reproductive harm such as asbestos and lead in lead based

paint.

SAVE THESE INSTRUCTION

DANGER: RISK OF EXPLOSION OR FIRE

WHAT CAN HAPPEN HOW TO PREVENT IT

 • Itisnormalforelectricalcontactswith-

in the motor and pressure switch to

spark.

 • Always operate the compressor in a well

ventilated area free of combustible materi-

als, gasoline, or solvent vapors.

 • If electrical sparks from compressor

come into contact with flammable

vapors, they may ignite, causing fire or

explosion.

 • Ifsprayingflammablematerials,locatecom-

pressor at least 20' (6.1 m) away from spray

area. An additional length of hose may be

required.

 • Storeflammablematerialsinasecureloca-

tion away from compressor.

 • Restrictinganyofthecompressorven-

tilation openings will cause serious

overheating and could cause fire.

 • Never place objects against or on top of

compressor pump.

• Operatecompressorinanopenareaatleast

12" (30.5 cm) away from any wall or obstruc-

tion that would restrict the flow of fresh air to

the ventilation openings.

 • Operatecompressorinaclean,drywellven-

tilated area. Do not operate unit indoors or in

any confined area.

 • Unattended operation of this product

couldresultinpersonalinjuryorprop-

erty damage. To reduce the risk of fire,

do not allow the compressor to operate

unattended.

 • Alwaysremaininattendancewiththeprod-

uct when it is operating.

 • Alwaysturnoffandunplugunitwhennotin

use.

DANGER: RISK TO BREATHING (ASPHYXIATION)

WHAT CAN HAPPEN HOW TO PREVENT IT

 • The compressed air directly from your

compressor is not safe for breathing.

The air stream may contain carbon mon-

oxide, toxic vapors, or solid particles

from the air tank. Breathing these con-

taminants can cause serious injury or

death.

 • Neveruseairobtaineddirectlyfromthecom-

pressor to supply air for human consumption.

The compressor is not equipped with suitable

filters and in-line safety equipment for human

consumption.

 • Exposuretochemicalsindustcreated

by power sanding, sawing, grinding,

drilling, and other construction activi-

ties may be harmful.

 • Sprayedmaterialssuchaspaint,paint

solvents, paint remover, insecticides,

weed killers, may contain harmful

vapors and poisons.

 • Workinanareawithgoodcrossventilation.

Read and follow the safety instructions pro-

vided on the label or safety data sheets for

the materials you are spraying. Always use

certified safety equipment: NIOSH/OSHA

respiratory protection or properly fit ting face

mask designed for use with your specific

application.

WARNING: RISK OF BURSTING

Air Tank: On February 26, 2002, the U.S. Consumer Product Safety Commission published

Release # 02-108 concerning air compressor tank safety:

Air compressor receiver tanks do not have an infinite life. Tank life is dependent upon several

factors, some of which include operating conditions, ambient conditions, proper installa-

tions, field modifications, and the level of maintenance. The exact effect of these factors on

air receiver life is difficult to predict.

If proper maintenance procedures are not followed, internal corrosion to the inner wall of the

air receiver tank can cause the air tank to unexpectedly rupture allowing pressurized air to

suddenlyandforcefullyescape,posingriskofinjurytoconsumers.

Your compressor air tank must be removed from service by the end of the year shown on

your tank warning label.

The following conditions could lead to a weakening of the air tank, and result in a violent air

tank explosion:

WHAT CAN HAPPEN HOW TO PREVENT IT

 • Failure to properly drain condensed

water from air tank, causing rust and

thinning of the steel air tank.

• Drainairtankdailyoraftereachuse.Ifairtank

develops a leak, replace it immediately with a

new air tank or replace the entire compressor.

 • Modificationsorattemptedrepairstothe

air tank.

 • Neverdrillinto,weld,ormakeanymodifications

to the air tank or its attachments. Never

attempt to repair a damaged or leaking air

tank. Replace with a new air tank.

 • Unauthorizedmodificationstothesafety

valve or any other components which

control air tank pressure.

 • Theairtankisdesignedtowithstandspecific

operatingpressures.Nevermakeadjustments

or parts substitutions to alter the factory set

operating pressures.

Attachments & accessories:

• Exceeding the pressure rating of air

tools, spray guns, air operated acces-

sories, tires, and other inflatables can

cause them to explode or fly apart, and

couldresultinseriousinjury.

• Follow the equipment manufacturers

recommendation and never exceed the

maximum allowable pressure rating of

attachments. Never use compressor to

inflate small low pressure objects such as

children’s toys, footballs, basketballs, etc.

Tires:

 • Over inflation of tires could result in

seriousinjuryandpropertydamage.

 • Use a tire pressure gauge to check the tires

pressure before each use and while inflating

tires; see the tire sidewall for the correct tire

pressure.

NOTE: Air tanks, compressors and similar

equipment used to inflate tires can fill small

tires very rapidly. Adjust pressure regulator on

air supply to no more than the rating of the

tire pressure. Add air in small increments and

frequently use the tire gauge to prevent over

inflation.

WARNING: RISK OF ELECTRICAL SHOCK

WHAT CAN HAPPEN HOW TO PREVENT IT

• Your air compressor is powered by

electricity. Like any other electrically

powered device, If it is not used properly

it may cause electric shock.

 • Neveroperatethecompressoroutdoorswhen

it is raining or in wet conditions.

 • Never operate compressor with protective

covers removed or damaged.

 • Repairs attempted by unqualified

personnelcanresultinseriousinjuryor

death by electrocution.

 • Anyelectricalwiringorrepairsrequiredonthis

product should be performed by a D

eWALT

factory service center or a D

eWALT authorized

service center in accordance with national

and local electrical codes.

 • Electrical Grounding: Failure to provide

adequate grounding to this product

could result in serious injury or death

from electrocution. See Grounding

Instructions under Installation.

 • Make certain that the electrical circuit to

which the compressor is connected provides

proper electrical grounding, correct voltage

and adequate fuse protection.

WARNING: RISK FROM FLYING OBJECTS

WHAT CAN HAPPEN HOW TO PREVENT IT

 • The compressed air stream can cause

soft tissue damage to exposed skin

and can propel dirt, chips, loose par-

ticles,andsmallobjectsathighspeed,

resulting in property damage or personal

injury.

 • Always wear certified safety equipment: ANSI

Z87.1 eye protection (CAN/CSA Z94.3) with

side shields when using the compressor.

 • Neverpointanynozzleorsprayertowardany

part of the body or at other people or animals.

 • Always turn the compressor off and bleed

pressure from the air hose and air tank before

attempting maintenance, attaching tools or

accessories.

WARNING: RISK OF HOT SURFACES

WHAT CAN HAPPEN HOW TO PREVENT IT

 • Touching exposed metal such as the

compressor head, engine head, engine

exhaust or outlet tubes, can result in

serious burns.

 • Never touch any exposed metal parts on

compressor during or immediately after

operation. Compressor will remain hot for

several minutes after operation.

 • Do not reach around protective shrouds or

attempt maintenance until unit has been

allowed to cool.

WARNING: RISK FROM MOVING PARTS

WHAT CAN HAPPEN HOW TO PREVENT IT

 • Moving parts such as the pulley, fly-

wheel,andbeltcancauseseriousinjury

if they come into contact with you or

your clothing.

 • Neveroperatethecompressorwithguardsor

covers which are damaged or removed.

 • Keep your hair, clothing, and gloves away

frommovingparts.Looseclothes,jewelry,or

long hair can be caught in moving parts.

 • Airventsmaycovermovingpartsandshould

be avoided as well.

 • Attemptingtooperatecompressorwith

damaged or missing parts or attempt-

ing to repair compressor with protective

shrouds removed can expose you to

moving parts and can result in serious

injury.

 • Any repairs required on this product should

be performed by a D

eWALT factory service

center or a D

eWALT authorized service center.

WARNING: RISK OF UNSAFE OPERATION

WHAT CAN HAPPEN HOW TO PREVENT IT

 • Unsafeoperationofyouraircompres-

sorcouldleadtoseriousinjuryordeath

to you or others.

 • Reviewandunderstandallinstructionsand

warnings in this manual.

 • Becomefamiliarwiththeoperationandcon

trols of the air compressor.

 • Keep operating area clear of all persons,

pets, and obstacles.

 • Keepchildrenawayfromtheaircompressor

at all times.

 • Donotoperatetheproductwhenfatiguedor

under the influence of alcohol or drugs. Stay

alert at all times.

 • Neverdefeatthesafetyfeaturesofthisprod

uct.

 • Equip area of operation with a fire extin-

guisher.

 • Donotoperatemachinewithmissing,bro-

ken, or un au tho rized parts.

 • Neverstandonthecompressor.

WARNING: RISK OF FALLING

WHAT CAN HAPPEN HOW TO PREVENT IT

•  A portable compressor can fall from

a table, workbench, or roof causing

damage to the compressor and could

resultinseriousinjury ordeathtothe

operator.

 • Always operate compressor in a stable

secure position to prevent accidental move-

ment of the unit. Never operate compressor

on a roof or other elevated position. Use

additional air hose to reach high locations.

WARNING: RISK OF

INJURY FROM LIFTING

WHAT CAN HAPPEN HOW TO PREVENT IT

 • Seriousinjurycanresultfromattempting

tolifttooheavyanobject.

 • Thecompressoristooheavytobeliftedby

one person. Obtain assistance from others

before lifting.

WARNING: RISK FROM NOISE

WHAT CAN HAPPEN HOW TO PREVENT IT

 • Undersomeconditionsanddurationof

use, noise from this product may con-

tribute to hearing loss.

 • Alwayswearproperhearingprotectionduring

use.

SAVE THESE INSTRUCTIONS

FOR FUTURE USE

Components (Fig. 1)

A. Sliding Handles H. Pressure Switch

B. Handle Grip I. Cord Wrap

C. Storage Support J. Air Filter

D.RegulatedPressureGauge K.TankPressureGauge

E. Quick Connects L. Auto(I)/Off(O) Switch

F. Regulator M. Drain Valve

G. Safety Valve

FEATURES (FIG. 1)

AUTO/OFF SWITCH

Place this switch (L) in the AUTO (I) position to provide automatic power to the pressure

switch and OFF (O) to remove power at the end of each use.

PRESSURE SWITCH

The pressure switch (H) automatically starts the motor when the air tank pressure drops

below the factory set cut-in pressure. It stops the motor when the air tank pressure

reaches the factory set cut-out pressure.

SAFETY VALVE

If the pressure switch does not shut off the air compressor at its cut-out pressure setting,

the safety valve (G) will protect against high pressure by popping out at its factory set

pressure (slightly higher than the pressure switch cut-out setting).

CHECK VALVE

When the air compressor is operating, the check valve is open, allowing compressed air

to enter the air tank. When the air compressor reaches cut-out pressure, the check valve

closes, allowing air pressure to remain inside the air tank.

TANK PRESSURE GAUGE

Thetankpressuregauge(K)indicatesthereserveairpressureinthetank.

REGULATED PRESSURE GAUGE

The regulated pressure gauge (D) indicates the air pressure available at the outlet side of

the regulator. This pressure is controlled by the regulator.

REGULATOR

The regulator (F) controls the air pressure shown on the regulated pressure gauge. Pull the

knob out and turn clockwise to increase pressure and counterclockwise to decrease pressure.

When the desired pressure is reached push knob in to lock in place. The regulated pressure

range is 7–150 psi.

WARNING: Risk of Bursting. Too much air pressure causes a hazardous risk of bursting.

Check the manufacturer’s maximum pressure rating for air tools and accessories. The

regulator outlet pressure must never exceed the maximum pressure rating.

UNIVERSAL QUICK CONNECT BODIES

The universal quick connect body (E) accepts the three most popular styles of quick connect

plugs: Industrial, automotive, and ARO. One hand push-to-connect operation makes

connections simple and easy. The two quick connect bodies allow the use of two tools at

the same time.

DRAIN VALVE

The drain valve (M) is located at the base of the air tank and is used to drain condensation

at the end of each use.

See Draining Air Tank under Maintenance.

COOLING SYSTEM

This compressor contains an advanced design cooling system. It is normal for this fan to

blow air through the vent holes in large amounts. The cooling system is working when air

is expelled.

AIR COMPRESSOR PUMP

The pump compresses air into the air tank. Working air is not available until the compressor

has raised the air tank pressure above that required at the air outlet.