DeWalt D55168 User manual

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iNSTRUCTiON MANUAL
GUIDE D'UTILISATION
MANUAL DE INSTRUCCIONES
INSTRUCTIVO DE OPERACION, CENTROS DE SERVICIO Y POLIZA
DE GARANTIA. ADVERTENClA: Lt_ASE ESTE INSTRUCTIVO ANTES
DE USAR EL PRODUCTO.
®
D55168
Oil Free Portable Air Compressor
Compresseur d'air portatif sans huile
Compresor de aire sin aceite portatil

D55168 Air Compressor
A. Auto(I)/Off(O) Switch F. Check Valve
B. Air Tank Pressure Gauge G. Safety Valve
C. Regulated Pressure Gauge H. Air Tank Drain Valve
D. Pressure Regulator I. Pressure Switch
E. Quick Connect J. Air Intake Filter
Pump/Motor Specifications
Voltage: Single Phase 120V
Minimum branch circuit requirement: 15 A
Fuse Type: Time delay
Specifications
MODEL D55168
WEIGHT 88 Ibs. (39.92 kg)
HEIGHT 41.75" (1060.5 mm)
WIDTH 19.0" (482.6 mm)
LENGTH 21.25" (539.8 mm)
AIR TANK CAPACITY 15 Gallon (56.8 liters)
APPROX CUT=IN PRESSURE 160 psi
APPROX. CUT=OUT PRESSURE 2OOpsi
SCFM @ 90 PSi 5.4*
NOISE LEVEL 78 dBA "-
*Tested per ISO 1217:1996
+Tested per ISO 3744:1994
FIG. 1
Declared Noise Emission Values
_er ISO 3744
Noise Emission Values LpA = 78.0 dBA re 20pPASound Pressure Level:
Uncertainty in the Sound Pressure Level: KpA = 3.0 dBA re 20/IPA I
I
Sound Power Level: LwA = 92.0 dBA re 1 pw I
Uncertainty in the Sound Power Level: KwA = 3.0 dBA re 1 pw
The sum of the emission value and the uncertainty is the limit
below which there is a 95% confidence the value of a single tool
will lie below when the tool is new.

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, 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 per-
sonal injury which, if not avoided, may result in
property damage.
IF YOU HAVE ANY QUESTIONS OR COMMENTS ABOUT
THIS OR ANY DEWALT TOOL, CALL US TOLL FREE AT:
I=800-4=DEWALT (1=800=433=9258)
Irnpertant Safety Instructions
WARNING: Do not operate this unit until you read and understand
this instruction manual for safety, operation and maintenance
instructions.
i_,WARNING: This product contains chemicals known to the State
of Cafifornia to cause cancer, and birth defects or other reproductive
harm. Wash hands after handling.
AWARNING: 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 HOWTO PREVENT IT
' It is normal for electrica! Con-• Always operate the c0mpreS:
tacts within the motor and sor in a well ventilated area
pressure switch to spark, free of Combustiblematerials,
gasoline, or solvent vapors.
• If electrical sparks from
compressor come into con-
tact with flammable vapors,
they may ignite, causing fire
or explosion.
• Ifspraying 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.

• Unattendedoperationof
thisproductcouldresultin
personalinjuryorproperty
damage.Toreducetherisk
offire,donotallowthe
compressortooperateunat-
tended.
,, Restricting any of the corn- - Never place objects against or
pressor ventilation openings on top of compressor.
will cause serious overheat- - Operate compressor in
ing and could cause fire. 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.
• Always remain in attendance
with the product when it is
operating.
Always turn off and unplug
unit when not in use.
_kDANGER: RISK TO BREATHING (ASPHYXIATION)
WHAT CAN HAPPEN HOWTO PREVENT iT
,, The compressed air directly ,, Never use air obtained directly
from your compressor is not from the compressor to supply
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
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.
air for human consumption
The compressor is not
equipped with suitable filters
and in-line safety equipment
for human consumption.
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
isdependent 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 oredict.
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 a r to suddenly and
forcefully escape, posing risk of injury to consumers.
Yourcompressor 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
Failureto properly drain
condensed water from
air tank, causing rust and
thinning of the steel air tank.
HOWTO PREVENT IT
Drain air tank daily or after
each use. Ifair tank develops
a leak, replace it immediately
with a new air tank or replace
the entire compressor.
Modifications or atter_pted ,
repa_rsto the air tank. Never drill into. weld. or make any modifications to the air
tank or its attachments. Never
attempt to repair adamaged 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.
Attachments &accessories:
The air tank is designed
to withstand specific
operating pressures. Never
make adjustments or parts
substitutions to alter the factory
set operating pressures.
Exceeding the pressure * Follow the equipment
rating of air tools, spray guns. manufacturers
air operated accessories, recommendation and never
tires,and other inflatables exceed the maximum allowable
can cause them to explode or pressure rating of attachments.
fly apart and could result in Never use compressor to
serious injury, inflate small low pressure
objects such as children's toys.
footballs, basketballs, etc.

•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 incre-
ments and frequently use the tire
gauge to prevent over inflation.
WARNING: RISK OF ELECTRICAL SHOCK
WHAT CAN HAPPEN HOWTO PREVENT IT
Youiair C0mpressor is = Never Operate the compressor
powered byelectricity, outdoors when it israining or
Like any other electrically in wet Conditions.
powered device, If it is not • Never operate cornpress0r
used Properly it may Cause with protective €0vers
electric shock. ......... removed or damagedl
• Repairs attempted by • Any electrical wiring or
unqualified personnel can repairs required on this
result in serious injury or product should be performed
death by electrocution, by a DEWALT factory
service center or a DEWALT
authorized service center in
accordance with national and
local electrical codes.
. Electrical Grounding:' Make certain that the
Failure to provide adequate electricaI circuit to which the
grounding to this product Compressor is connected
Could resu!t in serious injury provides Proper electrical
or death from electrocution, grounding, correct voltage and
See Grounding adequate fuse protection.
Instructions under
Installation.
WARNING: RiSK FROM FLYING OBJECTS
WHAT CAN HAPPEN
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.
HOWTO PREVENT IT
• Always wear certified safety
equipment: ANSI Z87.1 eye
protection (CANiCSA 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.
_kWARNING: RISK OF HOT SURFACES
WHAT CAN HAPPEN HOWTO PREVENT iT
= Touching exposed metal such = Never touch any exposed
as the compressor head. metal parts on compressor
e_ gine head, engine exhaust during or immediatelyafter
or outlet tubes, can result in operation. Compressor will
serious burns, 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 HOWTO PREVENT IT
Moving parts such as the
pulley, flywheel, and belt can
cause serious injury ifthey
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
qaircan be caught in moving
parts.
• Air vents may cover moving
parts and should be avoided as
well.
• Attempting to operate - Any repairs required on this
compressor with damaged or product should be performed
missing parts or attempting by a DEWALTfactory service
to repair compressor with center or a DEWALT authorized
protective shrouds removed service center.
can expose you to moving
parts and can result in
serious injury.

WARNING: RiSK OF UNSAFE OPERATION
WHAT CAN HAPPEN HOWTO PREVENT IT
Unsafe operation of your air
compressor could lead to seri-
ous injury or death to you or
others.
• Review and understand all
instructions and warnings in
this manual.
• Become familiar with the
operation and controls of the
air compressor.
• Keep operating area clear of all
persons, pets, and obstacles.
• Keep children 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 operate machine with
missing, broken, or unautho-
rized parts.
%
_WARNiNG: RISK OF FALLING
WHAT CAN HAPPEN HOWTO PREVENT IT
,, A portable compressor ,, Always operate compressor
can fall from a table, in a stable secure position to
workbench, or roof causing prevent accidental movement
damage to the compressor of the unit. Never operate
and could result in serious compressor on a roof or
injury or death to the other elevated position. Use
operator, additional air hose to reach
high locations.
i_ WARNING: RISK OF INJURY FROM LIFTING
WHAT CAN HAPPEN HOW TO PREVENT IT
= Serious injury can result • The compressor is too heavy
from attempting to lift too to be lifted by one person.
heavy an object. Obtain assistance from
others before lifting.

SAFETYVALVE
Ifthepressureswitchdoesnotshutofftheair
compressoratitscut-outpressuresetting,the
_,CAUTION: RISK FROM NOISE safety valve (G) will protect against high
WHAT CAN HAPPEN HOWTO PREVENT iT pressure by popping out at its factory set
.Under S0me €0ndiflons and o A!wayswearCertifiedsafe_ pressure (slightly higher than the pressure
duration of use, noise from equ!pment: ANSI $!2.6 switch cut-out setting).
this product may contribute ($3,19)hearing protection, CHECK VALVE
to hearing loss. When the air compressor is operating, the check valve (F) is
SAVE THESE INSTRUCTIONS
FOR FUTURE USE
FEATURES
AUTO/OFF SWITCH
Place this switch (A) 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 (I) automatically F
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.
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 (B) indicates
the reserve air pressure in the tank. B
REGULATED PRESSURE GAUGE C
The outlet pressure gauge (C) indicates
the air pressure available at the outlet
side of the regulator. This pressure is
controlled by the regulator.
REGULATOR
The regulator (D) 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 BODY
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.
DRAIN VALVE
The drain valve (H) 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.
AIR INTAKE FILTER
The filter (J) is designed to clean air entering the pump. To ensure
the pump continually receives a clean, cool, and dry air supply the
filter must always be clean and the filter intake must be free from
obstructions.
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 Auto/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 AUTO position.
INSTALLATION
Assembly
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). Coupler will snap into place.
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.
1. Ensure regulated pressure gauge reads 0 psi.
2. Pull coupler on quick connect body back to release Quick
Connect plug on hose.
Grounding instructions
_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 (M) with this unit
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.
lO

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 quafified
electrician.
* Repairs to the cord set or plug MUST be made by a quafified
electrician.
Extension Cords
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
• no longer than 50 feet (15.2 m)
• 12 gauge (AWG) or larger. (Wire size increases as gauge
number decreases. 10 AWG and 8 AWG may also be used. DO
NOT USE 14 OR 16 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.
Voltage and Circuit Protection
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 ff 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.
If any of the above conditions cannot be met, or ff 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.
Compatibility
NOTE: Always use an air line filter to remove moisture and oil vapor
when spraying paint.
£ocation
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.
11

&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 and wheels.
ELECTRICAL
Refer to all safety instructions before using unit. Observe extension
cord safety instructions if necessary. Always move the Auto/Off
switch (A) to the OFF position before removing the plug from the
outlet.
TRANSPORTING
When transporting the compressor in a vehicle, trailer, etc., make
sure the tank is drained and the unit issecured with straps to prevent
tipping. Use care when driving to prevent tipping the unit over in the
vehicle. Damage can occur to the compressor or surrounding items
if the compressor is tipped.
LIFTING
Always use two people when lifting and lift
from the recommended lift points (N). DO
NOT lift by wheels or shroud.
MOVING
_,CAUTION: The wheels and handle do
not provide adequate clearance, stability, or
support for pulling the unit up and down stairs
or steps. The unit must be lifted or pushed up
a ramp.
1. Grasp handle of compressor and tilt
compressor back to rest on wheels.
_&WARNING: Risk of Unsafe Operation. Ensure proper footing and
use caution when rolling compressor so that unit does not tip or
cause loss of balance.
2. When location is reached slowly lower compressor to ground.
Always store compressor in a vertical position resting on
the rubber bumpers and wheels.
PREPARATION FOR USE
WARNING: Do not operate this unit until you read this instruction
manual for safety, operation and maintenance instructions.
Pre-Start Checklist (Fig. 1)
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.
6. Pullthe 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. NOTE: Always use a minimum
3/8" (9.5 mm) or greater air hose rated at 300 psi.
_&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.
12

_kWARNING: 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.
OPERATING PROCEDURES
Start-up (Fig. 1)
1. Follow Pre-Start Checklist under Preparation for Use.
2. Move the Auto/Off switch to the ON position and allow tank
pressure to build. Motor will stop when tank pressure reaches
cut-out pressure.
NOTICE: Risk of Property Damage. Compressed air from the unit
may contain water condensation and oil mist. Do not spray unfil-
tered air at an item that could be damaged by moisture. Some air
operated tools or devices may require filtered air. Read the instruc-
tions for the air tool or device.
3. Adjust regulator (D) to desired setting. See Regulator under
Features.
Shut-down (Fig. 1)
1. Move Auto/Off switch (A) to the OFF position. NOTE: Iffinished
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. Pullthe 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.
_kWARNING: 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. ff 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.
MA#NTENANCE
The following procedures must be followed when maintenance or
service is performed on the air compressor.
1. Ensure Auto/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.
NOTE: Any service operations not included in this section should
be performed by a DEWALT factory service center or a DEWALT
authorized service center.
13

Maintenance Chart
Procedure Daily Weekly See tank
warning label
Check safety valve X
Inspect air filter X
Drain air tank X
Checkfor unusual noise/vibration X
Check for air leaks I X
Clean compressor exterior
Remove tank from service x X 2
1- To check for air leaks apply a solution of soapy water around joints.
While compressor is pumping to pressure and after pressure cuts
out, look for air bubbles to form.
2 - For more information,call 1-800-4-DEWALT(1-800-433-9258)
Checking Safety Valve
WARNING: Risk of bursting. If the safety valve does not work
properly, over-pressurization may occur, causing air tank rupture or
an explosion.
AWARNING: 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. NOTE: Ring may
be difficult to pull when air tank pressure is at 0 psi. If the valve is
stuck or does not operate smoothly, it must be replaced with the
same type of valve.
Draining Air Tank (Fig. 1)
_WARNING: Risk of unsafe operation. Risk from noise. Air tanks
contain high pressure air. Keep face and other body parts away from
outlet of drain. Use eye protection [ANSI Z87.1 (CAN/CSA Z94.3)]
when draining as debris can be kicked up into face.
_WARNING: Risk from nobe. Use ear protection [ANSI S12.6
(S3.19)] as air flow nobe b 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 Auto/Off switch is in the OFF position.
2. Place a suitable container under the drain valve (H) to catch
discharge.
3. Grasp lever on drain valve.
4. Slowly rotate lever to gradually bleed air from air tank.
WARNING: Risk of bursting. Drain air tank daily, Water will
condense in air tank. ff not drained, water will corrode and weaken
the air tank causing a risk of air tank rupture.
NOTICE.: Risk of Property Damage. Drain water from air tank may
contain oil and rust, which can cause stains.
5. When air tank pressure gauge reads 10 psi, rotate valve to the
fully open position.
6. Close drain valve when finished.
14

Checking Air Filter Element (Fig. 1)
_kWARNING: Hot surfaces. Risk of burn. Outlet tube, pump head,
and surrounding parts are very hot, do not
touch. Allow compressor to cool prior to
servicing.
1. Ensure Auto/Off switch (A) is in the
OFF Position.
2. Allow unit to cool.
3. Remove filter cover (J) from base.
4. Remove element from filter base.
5. Place new element back in filter base. Purchase replacement
parts from your local dealer or authorized service center. Always
use identical replacement parts.
6. Snap filter cover to filter base.
_,CAUTION: Risk of unsafe operation. Do not operate without air
inlet filter
ACCESSORIES
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 DEWALT Industrial Tool Co., 701 East Joppa Road,
Baltimore, MD 21286, call 1-800-4-DEWALT (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.
SERVICE INFORMATION
Please have the following information available for all service calls:
Model Number Serial Number
Date and Place of Purchase
Repairs
To assure product SAFETY and RELIABILITY, repairs, maintenance
and adjustment should be performed by a DEWALT factory service
center, a DEWALT authorized service center or other qualified
service personnel. Always use identical replacement parts.
Full One Year Warranty
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-DEWALT (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.
15

FREE WARNING LABEL REPLACEMENT: If your warning labels
become illegible or are missing, call 1-800-4-DEWALT for a free
replacement.
SUPERFICIESCALIENTES|
SU_ACESCHAVDESJ
16

GLOSSARY
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.
kPa (kilopascal): Metric pressure measurement. 1 kilopascal equal 1000 pascals.
Code Certification: Products that bear one or more of the following marks: ULc_*,CUL, ETL®*, CETL, have been evaluated by OSHA
certified independent safety laboratories and meet the applicable Standards for Safety.
*UE_is a registered trademark of Underwriters Laboratories and ETE_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.
17

Troubleshooting Guide
This section provides a listof 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, 22
Regulator knob has continuous air leak .................................................................................... 13
Regulator will not shut off air outlet ........................................................................................... 13
Motor will not run ....................................................................................................................... 6, 14, 15, 16, 17, 18, 19, 20
Squealing Sound ....................................................................................................................... 21
Troubleshooting Codes
CODE POSSIBLE CAUSE POSSIBLE SOLUTION
Pressure switch d0eS not shut 0ff m0tor when if the Unit doeS not shut 0ff €ontaCt
compressor reaches cut:out pressure a DEWALTfactory service center or a DEWALT authorized service
. center:
2 Pressure switch cut-out too high Contact a DEWALT factory service center or a DEWALT authorized
service center.
Tube fittings aie not Tighten fitt ngs where air Canbe heard esCapingl check f ttingS
'. with soapy water solution. Do Not Overtighten,
18

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 other-
wise modify air tank or it will weaken. The air tank can rupture or
explode.
i
5 Leaking seals Contact a DEWALTfactory service center 0r a DEWALT auth0r!zed
. service center.
6 Defective safety valve Operate safety valve manually by pulling on ring. If valve still leaks,
it must be replaced.
Regulat0i is not adjuSted Correctly for accessory, it is n#rmal for S0me preSsure drop tooccur when an access0iy
is used, adjust the regulator as instructed in Regulator under
iFeatures if pressure drop is excessive:
i
, NOTE:Adjust the regulated pressure under fl0w c0nditi0ns whi!e
accessory is being used.
8 Prolonged excessive use of air Decrease amount of air usage.
c0mp_ess0r is n0t iarge en0ugh f0i access0ry check the access0rY air requiremenL If it iS highei than the CFM
I or pressure supplied by Your air compressor, a larger compressor
,. is needed to operate accessory.
10 Hole in air hose Replace air hose.
Check valve restricted Remove; clean or replacel
12 Air leaks Tighten fittings.
13
14 Motor overload protection switch has tripped Refer to Motor Overload Protection under Features. If motor over-
load protection trips frequently, contact a DEWALT factory service
center or a DEWALT authorized service center.
19

CODE POSSIBLE CAUSE POSSIBLE SOLUTION
I
i5 Tank pressure exceeds pressure switch cut-in Motor wil! start automatically when tank pressure drops below CUt-
pressure in pressure of pressure switch.
16 Extension cord is wrong length or gauge Check for proper gauge wire and cord length refer to the Extension
Cords under Installation.
17 L0ose electrical Connecti0nS check wiring Connection inside pressure Switch and terrnina! box
• area.
18 Possible defective motor Contact a DEWALT factory service center or a DEWALT authorized
service center.
Paint spiay on inteinal motor parts Contact a DEWALTfactoiy seWice Center or a DEWALTauthorized
' service center: Do notoperate the compressor in the paint spray
! area. See flammable vapor warning.
20 Fuse blown, circuit breaker tripped 1. Check fuse box for blown fuse and replace as necessary. Reset
circuit breaker. Do not use a fuse or circuit breaker with higher
rating than that specified for our particular branch circuit.
2. Check for proper fuse. You should use a time delay fuse.
3. Check for low voltage conditions and/or proper extension cord.
4. Disconnect the other electrical appliances from circuit or operate
the compressor on its own branch circuit.
2i worn Belt Contact a DEWALT factory serVice center or aDEWALT aUth0rized
• service center.
22 Restricted air intake filter Clean or replace air intake filter. Do not operate the air compressor
with the filter removed. Refer to the Air Filter paragraph in the
Maintenance section.
2O