DeWalt D55141 User manual

D55141
Oil Free Portable Air Compressor
Compresseur d’air portatif sans huile
Compresor de aire sin aceite portátil
INSTRUCTION MANUAL
GUIDE D'UTILISATION
MANUAL DE INSTRUCCIONES
INSTRUCTIVO DE OPERACIÓN, CENTROS DE SERVICIOY PÓLIZA
DE GARANTÍA.ADVERTENCIA: LÉASE ESTE INSTRUCTIVO ANTES
DE USAR EL PRODUCTO.
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

2

A. On (I) /Off (O) Switch
B. Air Tank Pressure Gauge
C. Regulated Pressure Gauge
D. Pressure Regulator
E. Quick Connects

Voltage: Single 120V
Minimum branch circuit requirement: 15 A
Fuse Type: Time delay

MODEL D55141
WEIGHT 30 lbs. (13.6 kg)
HEIGHT 10.5" (266.7 mm)
WIDTH 19.125" (485.8 mm)
LENGTH 21.375” (542.9 mm)
AIR TANK CAPACITY 2.0 gallons (7.6 liters)
APPROX CUT-IN PRESSURE
120 psi
APPROX. CUT-OUT PRESSURE
150 psi
SCFM @ 100 PSI 1.7

C
FIG. 1 NOT A
STEP
DRAIN TANK DAILY
H
A
D
B
E
I
G
F
F. Check Valve
G. Safety Valve
H. Air Tank Drain Valve
I. Power Cord Wrap

3
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
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, will result in death or serious
injury.
WARNING: Indicates a potentially hazardous situation
which, if not avoided, could 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 not related to personal injury
which, if not avoided, may result in property damage.
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)

WARNING: Do not operate this unit until you read and understand
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. Wash hands after handling.
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.

DANGER: RISK OF EXPLOSION OR FIRE
WHAT CAN HAPPEN HOW TO PREVENT IT
 • Itisnormalforelectricalcon-
tacts within the motor and
pressure switch to spark.
 • Alwaysoperatethecompres-
sor in a well ventilated area
free of combustible materials,
gasoline, or solvent vapors.
 • Ifelectricalsparksfrom
compressor come into con-
tact with flammable vapors,
they may ignite, causing fire
or explosion.
 • Ifsprayingflammablemateri-
als, locate compressor at
least 20 feet (6.1 m) away
from spray area. An addi-
tional length of hose may be
required.
 • Storeflammablematerialsin
a secure location away from
compressor.
 • Restrictinganyofthecom-
pressor ventilation openings
will cause serious overheat-
ing and could cause fire.
 • Neverplaceobjectsagainstor
on top of compressor.
 • Operatecompressorin
an open area at least 12"
(30.5 cm) away from any
wall or obstruction that would
restrict the flow of fresh air to
the ventilation openings.
 • Operatecompressorina
clean, dry well ventilated area.
Do not operate unit indoors or
in any confined area.

4
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 • Unattendedoperationof
this product could result in
personalinjuryorproperty
damage. To reduce the risk
of fire, do not allow the
compressor to operate unat-
tended.
 • Alwaysremaininattendance
with the product when it is
operating.
 • Alwaysdisconnectelectrical
power by moving the On/Off
switch in the OFF position
and drain tank daily or after
each 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
monoxide, toxic vapors,
or solid particles from the
air tank.Breathing these
contaminants can cause
seriousinjuryordeath.
• Neveruseairobtaineddirectly
from the compressor 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 activities 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
provided on the label or safety
data sheets for the materials
you are spraying. Always use
certified safety equipment:
NIOSH/OSHA respiratory
protection or properly fitting
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 installations, field modifica-
tions, and the level of maintenance. The exact effect of these fac-
tors on air receiver life is difficult to predict.
If proper maintenance procedures are not followed, internal corro-
sion 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:

5
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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 accessories,
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 frequent-
ly 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.

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 • 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 DeWALT factory
service center or a DeWALT
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
particles,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.

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WARNING: RISK FROM MOVING PARTS
WHAT CAN HAPPEN HOW TO PREVENT IT
• Movingpartssuchasthe
pulley, flywheel, 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 attempting
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 DeWALT factory service
center or a DeWALT authorized
service center.
WARNING: RISK OF UNSAFE OPERATION
WHAT CAN HAPPEN HOW TO PREVENT IT
• Unsafeoperationofyourair
compressor could lead to seri-
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
operation and controls 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 product.
• Equipareaofoperationwitha
fire extinguisher.
• Donotoperatemachinewith
missing, broken, or unautho-
rized parts.
•Neverstandonthe
compressor.

8

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 movement
of the unit. Never operate
compressor on a roof or
other elevated position. Use
additional air hose to reach
high locations.
CAUTION: RISK FROM NOISE
WHAT CAN HAPPEN HOW TO PREVENT IT
 • Under some conditions and
duration of use, noise from
this product may contribute
to hearing loss.
 • Alwayswearcertifiedsafety
equipment: ANSI S12.6
(S3.19) hearing protection.



ON (I) / OFF (O) SWITCH
Place this switch (A) in the ON (I) position to A
provide automatic power to the pressure switch
and OFF (O) to remove power at the end of
each use.
PRESSURE SWITCH
The pressure switch 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
G
F
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 (F) 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.

9

TANK PRESSURE GAUGE
The tank pressure gauge (B) indicates C
D
B
E
the reserve air pressure in the tank.
OUTLET PRESSURE GAUGE
The outlet pressure gauge (C)
indicates the air pressure available at
the outlet side of the regulator. This
pressure is controlled by the regulator
and is always less than or equal to the tank pressure.
REGULATOR
The regulator (D) controls the air pressure shown on the outlet
pressure gauge.Turn regulator knob clockwise to increase pressure
and counterclockwise to decrease pressure.
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. The two quick connect bodies allow the use of two tools at the
same time.
DRAIN VALVE
The drain valve (H) is located at the base of the air
DRAIN TANK DAILY
H
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.
MOTOR OVERLOAD PROTECTOR
The motor has a thermal overload protector. If the motor overheats
for any reason, the overload protector will shut off the motor. The
motor must be allowed to cool down before restarting. To restart:
1. Set the On/Off lever to “Off” and unplug unit.
2. Allow the motor to cool.
3. Plug the power cord into the correct branch circuit receptacle.
4. Set the Auto/Off lever to “On” position.


INSTALLING HOSES
WARNING: Risk of unsafe operation. Firmly grasp hose in hand
when installing or disconnecting to prevent hose whip.
1. Ensure regulated pressure gauge reads 0 psi.
2. Grasp the hose at the Quick Connect plug and push the plug
into the Quick Connect body (E).
3. Grasp the hose and pull to ensure coupler is seated.
DISCONNECTING HOSES
WARNING: Risk of unsafe operation. Firmly grasp hose in hand
when installing or disconnecting to prevent hose whip.

10

1. Ensure regulated pressure gauge reads 0 psi.
2. Pull coupler on Quick Connect body back to release Quick
Connect plug on hose.

WARNING: Risk of Electrical Shock. In the event of a short
circuit, grounding reduces the risk of shock by providing an escape
wire for the electric current. This air compressor must be properly
grounded.
The portable air compressor is equipped with a cord having a
grounding wire with an appropriate grounding plug.
1. The cord set and plug (J) with this unit
L
J
K
contains a grounding pin (L). This plug
MUST be used with a grounded outlet
(K).
IMPORTANT: The outlet being used must
be installed and grounded in accordance
with all local codes and ordinances.
2. Ensure the outlet being used has the same configuration as the
grounded plug. DO NOT USE AN ADAPTER.
3. Inspect the plug and cord before each use. Do not use if there
are signs of damage.
4. If these grounding instructions are not completely understood, or
if in doubt as to whether the compressor is properly grounded,
have the installation checked by a qualified electrician.
DANGER: Risk of Electrical Shock. IMPROPER GROUNDING
CAN RESULT IN ELECTRICAL SHOCK.
• Do not modify the plug provided.If it does not fit the available outlet,
a correct outlet should be installed by a qualified electrician.
• Repairs to the cord set or plug MUST be made by a qualified
electrician.

If an extension cord must be used, be sure it is:
 • a3wireextensioncordthathasa3bladegroundingplug,and
a 3-slot receptacle that will accept the plug on the product
 • ingoodcondition
 • plugisnotworn
 • nolongerthan50feet(15.2m)
 • 14 gauge (AWG) or larger. (Wire size increases as gauge
number decreases. 12 AWG and 10 AWG may also be used. DO
NOT USE 16 OR 18 AWG.)
NOTICE: Risk of property damage. The use of an undersized
extension cord will cause voltage to drop resulting in power loss
to the motor and overheating. Instead of using an extension cord,
increase the working reach of the air hose by attaching another
length of hose to its end. Attach additional lengths of hose as
needed.

Refer to the Voltage and Minimum Branch Circuit Requirements
under Pump/Motor Specifications.
CAUTION: Certain air compressors can be operated on a
15 amp circuit if the following conditions are met.
• VoltagesupplytocircuitmustcomplywiththeNationalElectrical
Code.
• Circuitisnotusedtosupplyanyotherelectricalneeds.
• Extensioncordscomplywithspecifications.
• Circuit is equipped with a 15 amp circuit breaker or 15 amp
time delay fuse. NOTE: If compressor is connected to a circuit
protected by fuses, use only time delay fuses. Time delay fuses
should be marked “D” in Canada and “T” in the US.

11

If any of the above conditions cannot be met, or if operation of the
compressor repeatedly causes interruption of the power, it may be
necessary to operate it from a 20 amp circuit. It is not necessary
to change the cord set.

Air tools and accessories that are run off the compressor must be
compatible with petroleum-based products. If you suspect that a
material is not compatible with petroleum products, an air line filter
for removal of moisture and oil vapor in compressed air is required.
NOTE: Always use an air line filter to remove moisture and oil vapor
when spraying paint.

Place the air compressor in a clean, dry and well ventilated area
at least 12" (30.5 cm) away from the wall or other obstructions that
will interfere with the flow of air. Keep the compressor away from
areas that have dirt and/or volatile fumes in the atmosphere. These
impurities may clog the intake filter and valves, causing inefficient
operation.
WARNING:The air compressor pump and shroud are designed to
allow for proper cooling.The ventilation openings on the compressor
are necessary to maintain proper operating temperature. Do not
place rags or other containers on or near these openings.
Place the air compressor on a flat surface resting on the rubber
feet.
NOISE CONSIDERATIONS
Consult local officials for information regarding acceptable noise
levels in your area.To reduce excessive noise, use vibration mounts
or silencers, relocate the unit or construct total enclosures or baffle
walls. Contact a D
e WALT service center or call 1-800-4-D e WALT
(1-800-433-9258) for assistance.
ELECTRICAL
Refer to all safety instructions before using unit. Observe extension
cord safety instructions if necessary. Always move the On/Off
switch (A) to the OFF position before removing the plug from the
outlet.
TRANSPORTING
When transporting the compressor in a vehicle, trailer, etc., ensure
that the tank is drained and the unit is secured.Use care when driving
to avoid tipping the unit over in the vehicle. Damage can occur to the
compressor or surrounding items if the compressor is tipped.
MOVING
When moving the compressor, grasp the handle and carry the
compressor as close to the body as possible.
WARNING: Ensure proper footing and use caution when carrying
compressor to avoid a loss of balance.

WARNING: Do not operate this unit until you read and understand
this instruction manual for safety, operation and maintenance
instructions.

1. Ensure the Auto/Off switch (A) is in the OFF position.
2. Plug the power cord into the correct branch circuit receptacle. See
Voltage and Circuit Protection under Installation.
3. Ensure air tank is drained, see Draining Air Tank under
Maintenance.
4. Ensure the drain valve (
H ) is closed.
5. Ensure safety valve (
G ) is functioning properly, see Checking
Safety Valve under Maintenance.

12

6. Pull the regulator knob (D) out and turn counterclockwise until fully
closed. Ensure regulated pressure gauge reads 0 psi. Push knob
in to lock in place.
7. Attach hose and accessories.
WARNING: Risk of unsafe operation. Firmly grasp air hose in hand
when installing or disconnecting to prevent hose whip.
WARNING: Risk of unsafe operation. Do not use damaged or
worn accessories.
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.


1. Follow Pre-Start Checklist under Preparation for Use.
NOTICE: Risk of property damage. Do not operate in vertical
position.Verticalpositionisforstorageonly.
2. Move the Auto/Off switch to the AUTO position and allow tank
pressure to build. Motor will stop when tank pressure reaches
cut-out pressure.
CAUTION: Risk of unsafe operation. Compressed air from the
unit may contain water condensation and oil mist. Do not spray
unfiltered air at an item that could be damaged by moisture. Some
air operated tools or devices may require filtered air. Read the
instructions for the air tool or device.
 3.Adjust regulator (D) to desired setting. See Regulator under
Features.

1. Move Auto/Off switch (A) to the OFF position. NOTE: If finished
using compressor, follow Steps 2 - 6.
NOTE: When the unit has been turned off, it is normal to hear a short
hiss of air being released.
2. Pull the regulator knob (D) out and turn counterclockwise until fully
closed. Ensure regulated pressure gauge reads 0 psi. Push knob
in to lock in place.
3. Remove hose and accessory.
WARNING: Risk of unsafe operation. Firmly grasp air hose in hand
when installing or disconnecting to prevent hose whip.
4. Drain the air tank,
see Draining Air Tank under Maintenance .
Ensure air tank pressure gauge reads 0 psi.
WARNING: Risk of bursting. Drain air tank daily. Water will
condense in air tank. If not drained, water will corrode and weaken
the air tank causing a risk of air tank rupture.
5. Allow the compressor to cool down.
6. Wipe air compressor clean and store in a safe, non-freezing area.
CAUTION: Risk of unsafe operation. Do not operate in vertical
position.Verticalpositionisforstorageonly.

The following procedures must be followed when maintenance or
service is performed on the air compressor.
1. Ensure On/Off switch is in the OFF position.
2. Remove air compressor plug from outlet.
3. Drain air tank.
4. Allow air compressor to cool down before starting service.
NOTE: All compressed air systems contain maintenance parts (e.g.,
oil, filters, separators) that are periodically replaced. These used parts
may contain substances that are regulated and must be disposed of in
accordance with local, state, and federal laws and regulations.
NOTE: Take note of the positions and locations of parts during
disassembly to make reassembly easier.

13

NOTE: Any service operations not included in this section should
be performed by a D
e WALT factory service center or a D e WALT
authorized service center.

Procedure Before
Each Use Daily or after each use
See tank
warning
label
Check safety valve X
Drain air tank X
Remove tank from
service X1
1- For more information, call 1-800-4-D e WALT (1-800-433-9258)

WARNING: Risk of bursting. If the safety valve does not work
properly, over-pressurization may occur, causing air tank rupture or
an explosion.
WARNING: Risk from flying objects. Always wear certified safety
equipment: ANSI Z87.1 eye protection (CAN/CSA Z94.3) with side
shields when using the compressor.
Before starting compressor, pull the ring on the safety valve to
make sure that the safety valve operates freely. If the valve is stuck
or does not operate smoothly, it must be replaced with the same
type of valve.

WARNING: Risk of unsafe operation. Air tanks contain high
pressure air. Keep face and other body parts away from outlet of
drain. Use safety glasses when draining as debris can be kicked up
into face.
WARNING: Risk from noise. Use ear protection [ANSI S12.6
(S3.19)] as air flow noise is loud when draining.
NOTE: All compressed air systems generate condensate that
accumulates in any drain point (e.g., tanks, filter, aftercoolers,
dryers). This condensate contains lubricating oil and/or substances
which may be regulated and must be disposed of in accordance with
local, state, and federal laws and regulations.
1. Ensure On/Off switch (A) is in the OFF position.
2. Move compressor into an inclined position so drain valve (H) is
at the lowest point (this will assist in removing moisture, dirt, etc.
from air tanks)
3. Place a suitable container under the drain valve to catch
discharge.
4. Grasp black lever on drain valve.
5. Slowly rotate lever to gradually bleed air from air tank.
6. When air tank pressure gauge reads 10 psi, rotate valve to the
fully open position.
7. Close drain valve when finished.

Recommended accessories for use with your tool are available
for purchase from your local dealer or authorized service center.
If you need assistance in locating any accessory for your tool,
please contact D
e WALT Industrial Tool Co., 701 East Joppa Road,
Baltimore, MD 21286, call 1-800-4-D
e WALT (1-800-433-9258) or
visit our website www.dewalt.com.
WARNING: The use of any other accessory not recommended for
use with this tool could be hazardous. Use only accessories rated
equal to or higher than the rating of the air compressor.

14


Please have the following information available for all service calls:
Model Number ____________ Serial Number _________________
Date and Place of Purchase ______________________________

To assure product SAFETY and RELIABILITY, repairs, maintenance
andadjustmentshouldbeperformedbyaD
e WALT factory service
center, a D
e WALT authorized service center or other qualified
service personnel. Always use identical replacement parts.

DeWALT heavy duty industrial tools are warranted for one year from
date of purchase. We will repair, without charge, any defects due to
faulty materials or workmanship. For warranty repair information, call
1-800-4-D
e WALT (1-800-433-9258). This warranty does not apply to
accessories or damage caused where repairs have been made or
attempted by others. This warranty gives you specific legal rights and
you may have other rights which vary in certain states or provinces.
LATIN AMERICA: This warranty does not apply to products sold
in Latin America. For products sold in Latin America, see country
specific warranty information contained either in the packaging, call
the local company or see website for warranty information.
FREE WARNING LABEL REPLACEMENT: If your warning labels
become illegible or are missing, call 1-800-4-D
e WALT (1-800-433-
9258) for a free replacement.

15


CFM: Cubic feet per minute.
SCFM: Standard cubic feet per minute; a unit of measure of air delivery.
PSI: Pounds per square inch; a unit of measure of pressure.
Code Certification: Products that bear one or more of the following marks: UL®*, CUL, ETL®*, CETL, have been evaluated by OSHA
certified independent safety laboratories and meet the applicable Standards for Safety.
*UL®is a registered trademark of Underwriters Laboratories and ETL®is a registered trademark of Electrical Testing Laboratories.
Cut-In Pressure: While the motor is off, air tank pressure drops when accessory is used. When the tank pressure drops to a certain low
level the motor will restart automatically. The low pressure at which the motor automatically restarts is called cut-in pressure.
Cut-Out Pressure: When an air compressor is turned on and begins to run, air pressure in the air tank begins to build. It builds to a
certain high pressure before the motor automatically shuts off, protecting your air tank from pressure higher than its capacity. The high
pressure at which the motor shuts off is called cut-out pressure.
Branch Circuit: The circuit carrying electricity from electrical panel to outlet.
Duty Cycle: This air compressor pump is capable of running continuously. However, to prolong the life of your air compressor, it
is recommended that a 50%-75% average duty cycle be maintained; that is, the air compressor pump should not run more than
30-45 minutes in any given hour.

16


This section provides a list of the more frequently encountered malfunctions, their causes and corrective actions.The operator or maintenance
personnel can perform some corrective actions, and others may require the assistance of a qualified DeWALT technician or your dealer.
Problem Code
Excessive air tank pressure-safety valve pops off ......................................................................1, 2
Air leaks ....................................................................................................................................3
Air leaks in air tank or at air tank welds ....................................................................................4
Air leaks between head and valve plate....................................................................................5
Air leaks from safety valve.........................................................................................................6
KnockingNoise..........................................................................................................................6
Pressure reading on the regulated pressure gauge drops when an accessory is used...........7
Compressor is not supplying enough air to operate accessories..............................................8, 9, 10, 11, 12
Regulator knob has continuous air leak ....................................................................................13
Regulator will not shut off air outlet ...........................................................................................13

CODE POSSIBLE CAUSE POSSIBLE SOLUTION
1 Pressure switch does not shut off motor when compressor
reaches cut-out pressure Set the On/Off switch to OFF, if the unit does not shut
off contact a D
e WALT factory service center or a D e WALT
authorized service center.
2Pressure switch cut-out too high Contact a D
e WALT factory service center or a D e WALT
authorized service center.
3Tube fittings are not tight enough Tighten fittings where air can be heard escaping. Check
fittings with soapy water solution. Do Not Overtighten.

17

CODE POSSIBLE CAUSE POSSIBLE SOLUTION
4 Defective air tank Air tank must be replaced. Do not repair the leak.
WARNING: Risk of bursting. Do not drill into, weld or
otherwise modify air tank or it will weaken. The air tank can
rupture or explode.
5 Leaking seals Contact a D
e WALT factory service center or a D e WALT
authorized service center.
6 Defective safety valve Operate safety valve manually by pulling on ring. If valve
still leaks, it must be replaced.
7Regulatorisnotadjustedcorrectlyforaccessorybeing
used It is normal for some pressure drop to occur when an acces- soryisused,adjusttheregulatorasinstructedinRegulator
under Features if pressure drop is excessive.
NOTE:Adjusttheregulatedpressureunderflowconditions
while accessory is being used.
8 Prolonged excessive use of air Decrease amount of air usage.
9 Compressor is not large enough for accessory Check the accessory air requirement. If it is higher than
the CFM or pressure supplied by your air compressor, a
larger compressor is needed to operate accessory.
10 Hole in air hose Replace air hose.
11 Check valve restricted Remove, clean or replace.
12 Air leaks Tighten fittings.
13 Regulator is damaged Replace.

18


C
FIG. 1 PAS UNE
ÉTAPE
A
D
B
E
I
G
F
A. Interrupteur auto/arrêt
[AUTO(I)/OFF(O)]
 B.Manomètreduréservoird’air
C. Manomètre régulé
D. Régulateur de pression
E. Branchements rapides
F. Clapet
G. Soupape de sûreté
H. Soupape de purge du
réservoird’air
I. Rembobineur de cordon
d’alimentation

Tension : monophasé, 120V
Exigence minimale du circuit de dérivation : 15 A
Type de fusible : temporisation

MODÈLE D55141
POIDS 13,6 kg (30 lbs.)
HAUTEUR 266,7 mm (10,5 po)
LARGEUR 485,8 mm (19,125 po)
LONGUEUR 542,9 mm (21,375 po)
CAPACITÉ DU RÉSERVOIR D’AIR 7,6 liters (2,0 gallons)
PRESSION D’ENCLENCHEMENT
APPROX.
(120 psi)
ENV. PRESSION DE DÉCLENCHEMENT
(150 psi)
PCMS (SCFM) @ 100 PSI 1,7
DRAIN TANK DAILY
H

19



Les définitions ci-dessous décrivent le niveau de gravité pour
chaquesymbole.Veuillezlirelemoded’emploietporteruneatten-
tion particulière à ces symboles.
DANGER : Indique une situation dangereuse imminente qui, si
elle n’est pas évitée, causera la mort ou des blessures graves.
AVERTISSEMENT : Indique une situation potentiellement dan-
gereuse qui, si elle n’est pas évitée, pourrait se solder par un
décès ou des blessures graves.
ATTENTION : Indique une situation potentiellement dangereuse
qui, si elle n’est pas évitée pourrait se solder par des blessures
mineures ou modérées.
AVIS : Indique une pratique ne posant aucun risque de dom-
mages corporels mais qui par contre, si rien n’est fait pour
l’éviter, pourrait poser des risques de dommages matériels.
POURTOUTESQUESTIONSOUCOMMENTAIRESRELATIFS(VES)
À L’OUTIL OU À PROPOS DE TOUT AUTRE OUTIL DeWALT,
COMPOSER SANS FRAIS LE : 1-800-4-DeWA LT
(1-800-433-9258)

AVERTISSEMENT : Ne pas utiliser cet appareil avant d’avoir lu
et compris le mode d’emploi ainsi que l’intégralité des directives de
sécurité, d’utilisation et d’entretien.
AVERTISSEMENT : Ce produit contient des produits chimiques
reconnus par l’État de la Californie comme étant cancérigènes
et pouvant entraîner des anomalies congénitales ou d’autres
problèmes liés aux fonctions reproductrices. Se laver les mains
après toute manipulation.
AVERTISSEMENT : Certaines poussières contiennent des
produits chimiques reconnus par l’État de la Californie comme
cancérigènes et pouvant entraîner des anomalies congénitales
et d’autres problèmes liés aux fonctions reproductrices, tels que
l’amiante et le plomb contenus dans les peintures au plomb.

AVERTISSEMENT : Risque d’explosion ou d’incendie
CE QUI PEUT SE PRODUIRE COMMENT L’ÉVITER
 • Ilestnormalquedes
contacts électriques dans le
moteur et le manocontacteur
fassent une étincelle.
 • Faitestoujoursfonctionner
le compresseur dans une
zone bien aérée sans matière
combustible, essence ou
vapeur de solvant.
 • Siuneétincelleélectrique
provenant du compresseur
entre en contact avec des
vapeurs inflammables,
ellepeuts’enflammeret
causer un incendie ou une
explosion.
 • Sivousaspergezdes
matériaux inflammables,
placez le compresseur à
au moins 6,1 m (20 pieds)
de la zone pulvérisée. Il est
possible que vous ayez besoin
d’unelongueurdetuyau
additionnelle.
 • Entreposezlesmatières
inflammables dans un
endroit sécuritaire, éloigné du
compresseur.

20

 • Lefaitdelimiterles
ouverturesd’aérationde
compresseur causera une
importante surchauffe et
pourrait causer un incendie.
 • Neplacezjamaisdesobjets
contre le compresseur ou sur
celui-ci.
 • Faitesfonctionnerle
compresseur dans un endroit
aéré à au moins 30,5 cm
(12 po) du mur ou de
l’obstructionquipourraitlimiter
ledébitd’airfraisdansles
ouverturesd’aération.
 • Faitesfonctionnerle
compresseur dans un endroit
propre, sec et bien aéré.
Nepasutiliserl’appareilà
l’intérieuroudansunendroit
exigu.
 • Lefonctionnementdece
produit sans surveillance
pourrait se solder par des
blessures personnelles
ou des dommages à la
propriété. Afin de réduire
lerisqued’incendie,ne
pas laisser le compresseur
fonctionner sans surveillance.
 • Êtretoujoursprésentlorsque
le produit est en marche.
 • Toujoursdébrancherlecordon
d’alimentationenmettant
l’interrupteur marche/arrêt en
position ARRÊT et purger le
réservoir quotidiennement ou
après chaque utilisation.
DANGER : RISQUE REPIRATOIRE (ASPHYXIE)
CE QUI PEUT SE PRODUIRE COMMENT L’ÉVITER
• Ilestdangereuxderespirer
l’aircomprimésortantdu
compresseur.Lefluxd’air
peut contenir du monoxyde
de carbone, des vapeurs
toxiques ou des particules
solides provenant du réservoir
d’air.Larespirationdeces
contaminants peut causer de
sérieuses blessures, voire la
mort.
• Nejamaisutiliserl’airobtenu
directement du compresseur
pourl’alimentationenair
destinée à la consommation
humaine. Le compresseur
n’estpasmunidefiltreset
d’équipementdesécuritéen
ligne qui conviennent à la
consommation humaine.
•
Une exposition aux produits
chimiques présents dans
la poussière générée par
les activités de ponçage,
sciage, meulage, perçage
et autres, peut être nocive
• Les matériaux vaporisés
comme la peinture, les
solvants de peinture, les
décapants, les insecticides,
les herbicides, pourraient
contenir des vapeurs
nocives et du poison.
• Travailler dans un endroit
ayant une bonne aération
transversale. Lire et
respecter les directives
en matière de sécurité
impriméessurl’étiquette
ou les fiches signalétiques
des matériaux qui sont
pulvérisés.Toujoursutiliser
un équipement de sécurité
homologué : une protection
respiratoire conforme aux
normes NIOSH/OSHA, ou
unmasquefacialbienajusté,
conçus spécifiquement pour
votre utilisation particulière.