Craftsman 919.165190 User manual

Owner’s Manual
Permanently Lubricated
Single Stage
Vertical Portable
AIR COMPRESSOR
• Safety Guidelines
• Assembly
• Operation
• Maintenance
• Service and Adjustments
• Troubleshooting
• Repair Parts
• Español
Model No.
919.165190
CAUTION: Read the Safety Guidelines
and All Instructions Carefully Before
Operating.
D24588 Rev. 4 9/23/02
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.
Visit our Craftsman website: www.sears.com/craftsman

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D24588
TABLE OF CONTENTS
WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
SPECIFICATION CHART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
SAFETY GUIDELINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8
GLOSSARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
DUTY CYCLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-12
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-15
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16-17
SERVICE AND ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . .18-19
STORAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . .21-23
REPAIR PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24-27
ESPAÑOL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28-49
HOW TO ORDER REPAIR PARTS . . . . . . . . . . . . . . . . . . . . .back cover
WARRANTY
FULL ONE YEAR WARRANTY AIR COMPRESSOR
If this air compressor fails due to a defect in material or workmanship within
one year from the date of purchase, RETURN IT TO THE NEAREST SEARS
REPAIR CENTER THROUGHOUT THE UNITED STATES AND SEARS WILL
REPAIR IT, FREE OF CHARGE. If purchased from Orchard Supply Hardware,
return to the nearest Orchard Store and Orchard will repair it, free of charge.
If this air compressor is used for commercial or rental purposes, the warranty
will apply for ninety days from the date of purchase.
This warranty gives you specific legal rights and you may have other rights
which vary from state to state.
Sears, Roebuck and Co., Dept. 817WA, Hoffman Estates, IL 60179

3- ENG D24588
SPECIFICATION TABLE
Model No. 919-165190
Max. Developed HP 5.5
Bore 2.38"
Stroke 1.35"
Voltage-Single Phase 120V/60Hz
Minimum Branch Circuit Requirement 15 amps
Fuse Type Time Delay
Air Tank Capacity 25 gallons
Approximate Cut-in Pressure 110
Approximate Cut-out Pressure 135
SCFM @ 40 psig 8.4
SCFM @ 90 psig 6.2
SAFETY GUIDELINES - DEFINITIONS
Indicates an imminent-
ly hazardous situation
which, if not avoided, will result in
death or serious injury.
Indicates a potentially
hazardous situation
which, if not avoided, could result in
death or serious injury.
Indicates a potentially
hazardous situation
which, if not avoided, may result in
minor or moderate injury.
Used without the
safety alert symbol
indicates a potentially hazardous situ-
ation which, if not avoided, may
result in property damage.
This manual contains information that is important for you to know and understand. This information
relates to protecting YOUR SAFETY and PREVENTING EQUIPMENT PROBLEMS. To help you rec-
ognize this information, we use the symbols below. Please read the manual and pay attention to these
sections.
IMPORTANT SAFETY INSTRUCTIONS
Some dust created by power sanding, sawing, grinding, drilling, and other con-
struction activities contains chemicals known (to the State of California) to cause
cancer, birth defects or other reproductive harm. Some example of these chemicals are:
●lead from lead-based paints
●crystalline silica from bricks and cement and other masonry products
●arsenic and chromium from chemically-treated lumber
Your risk from these exposures varies, depending on how often you do this type of work. To reduce
your exposure to these chemicals: work in a well ventilated area, and work with approved safety
equipment, always wear MSHA/NIOSH approved, properly fitting face mask or respirator when using
such tools.
When using air tools, basic safety precautions should always be followed to reduce the risk of of per-
sonal injury.
Refer to Glossary for abbreviations.

4- ENG
D24588
IMPORTANT SAFETY INSTRUCTIONS
Save these instructions
Improper operation or maintenance of this product could result in serious injury and
property damage. Read and understand all warnings and operation instructions before
using this equipment.
HAZARD
WARNING: Risk of explosion or fire
How To Prevent It
What Could Happen
It is normal for electrical contacts within
the motor and pressure switch to spark.
If electrical sparks from compressor
come into contact with flammable
vapors, they may ignite, causing fire or
explosion.
Restricting any of the compressor venti-
lation openings will cause serious over-
heating and could cause fire.
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 operate the compressor in a well
ventilated area free of combustible
materials, gasoline, or solvent vapors.
If spraying flammable materials, locate
compressor at least 20 feet away from
spray area. An additional length of hose
may be required.
Store flammable materials in a secure
location away from compressor.
Never place objects against or on top
of compressor. Operate compressor in
an open area at least 12 inches away
from any wall or obstruction that would
restrict the flow of fresh air to the ventila-
tion 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 disconnect electrical power by
moving pressure switch lever to the off
position and drain tank daily or after
each use.

5- ENG D24588
WARNING: Risk of Bursting
Air Tank: The following conditions could lead to a weakening of the tank, and result
in a violent tank explosion and could cause property damage or serious injury.
How To Prevent It
What Could Happen
WARNING: Risk from Flying Objects
HOW TO PREVENT IT
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, result-
ing in property damage or personal injury.
Always wear ANSI Z87.1 approved safety
glasses 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 tank
before attempting maintenance, attaching
tools or accessories.
HAZARD
HAZARD
Drain tank daily or after each use. If
tank develops a leak, replace it immedi-
ately with a new tank or replace the entire
compressor.
1. Failure to properly drain con-
densed water from tank, causing
rust and thinning of the steel tank.
2. Modifications or attempted repairs
to the tank.
3. Unauthorized modifications to the
unloader valve, safety valve, or any
other components which control
tank pressure.
Never drill into, weld, or make any modi-
fications to the tank or its attachments.
4. Excessive vibration can weaken
the air tank and cause rupture or
explosion
The tank is designed to withstand specific
operating pressures. Never make adjust-
ments or parts substitutions to alter the
factory set operating pressures.
For essential control of air pressure, you
must install a pressure regulator and
pressure gauge to the air outlet (if not
equipped) of your compressor. Follow the
equipment manufacturers recommenda-
tion 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.
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.

6- ENG
D24588
HOW TO PREVENT IT
WHAT CAN HAPPEN
WARNING: Risk to Breathing
WARNING: Risk of Electrical Shock
HOW TO PREVENT IT
WHAT CAN HAPPEN
HAZARD
HAZARD
Your air compressor is powered by
electricity. Like any other electrically
powered device, If it is not used properly
it may cause electric shock.
Repairs attempted by unqualified per-
sonnel can result in serious injury or
death by electrocution.
Electrical Grounding: Failure to provide
adequate grounding to this product
could result in serious injury or death
from electrocution.
See grounding instructions.
Never operate the compressor outdoors
when it is raining or in wet conditions.
Never operate compressor with protec-
tive covers removed or damaged.
Any electrical wiring or repairs required
on this product should be performed by
authorized service center personnel in
accordance with national and local electri-
cal codes.
Make certain that the electrical circuit
to which the compressor is connected
provides proper electrical grounding,
correct voltage and adequate fuse pro-
tection.
The compressed air directly from your
compressor is not safe for breathing.
The air stream may contain carbon
monoxide, toxic vapors, or solid parti-
cles from the tank. Breathing these con-
taminants can cause serious injury or
death.
Sprayed materials such as paint, paint
solvents, paint remover, insecticides,
weed killers, may contain harmful vapors
and poisons.
Air obtained directly from the compressor
should never be used to supply air for
human consumption. In order to use air
produced by this compressor for breath-
ing, suitable filters and in-line safety
equipment must be properly installed.
In-line filters and safety equipment used
in conjunction with the compressor must
be capable of treating air to all applica-
ble local and federal codes prior to
human consumption.
Work in an area with good cross venti-
lation. Read and follow the safety
instructions provided on the label or
safety data sheets for the materials you
are spraying. Use a NIOSH/ MSHA
approved respirator designed for use
with your specific application.

7- ENG D24588
HOW TO PREVENT IT
WHAT CAN HAPPEN
WARNING: RISK OF BURNS
Touching exposed metal such as the
compressor head 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.
HOW TO PREVENT IT
WHAT CAN HAPPEN
WARNING: RISK FROM MOVING PARTS
Never operate the compressor with
guards or covers which are damaged or
removed.
Moving parts such as the pulley, flywheel,
and belt can cause serious injury if they
come into contact with you or your cloth-
ing.
HAZARD
HAZARD
Any repairs required on this product
should be performed by authorized
service center personnel.
Attempting to operate compressor with
damaged or missing parts or attempting
to repair compressor with protective
shrouds removed can expose you to mov-
ing parts and can result in serious injury.
HOW TO PREVENT IT
WHAT CAN HAPPEN
WARNING: RISK OF SERIOUS INJURY OR PROPERTY DAM-
AGE WHEN TRANSPORTING COMPRESSOR
Oil can leak or spill and could result in
fire or breathing hazard; serious injury or
death can result. Oil leaks will damage
carpet, paint or other surfaces in vehicles
or trailers.
Always place compressor on a protec-
tive mat when transporting to protect
against damage to vehicle from leaks.
Remove compressor from vehicle immedi-
ately upon arrival at your destination.
(Fire, Inhalation, Damage to Vehicle Surfaces)
HAZARD

8- ENG
D24588
HOW TO PREVENT IT
WHAT CAN HAPPEN
WARNING: RISK OF UNSAFE OPERATION
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 compres-
sor at all times.
Do not operate the product when
fatigued or under the influence of alco-
hol or drugs. Stay alert at all times.
Never defeat the safety features of this
product.
Equip area of operation with a fire extin-
guisher.
Do not operate machine with missing,
broken, or unauthorized parts.
Unsafe operation of your air compressor
could lead to serious injury or death to
you or others.
HAZARD

9- ENG D24588
ACCESSORIES
This unit is capable of powering the following Accessories. The accessories are
available through the current Power and Hand Tool Catalog or full-line Sears
stores.
GLOSSARY
Become familiar with these terms
before operating the unit.
CFM: Cubic feet per minute.
SCFM: Standard cubic feet per
minute; a unit of measure of air deliv-
ery.
PSIG: Pounds per square inch
gauge; 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 Underwriters
Laboratories Standards for Safety.
Cut-In Pressure: While the motor is
off, air tank pressure drops as you
continue to use your accessory.
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 auto-
matically 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: Circuit carrying elec-
tricity from electrical panel to outlet.
Accessories
• In Line Filter
• Tire Air Chuck
• Quick Connector Sets (various
sizes)
• Air Pressure Regulators
• Oil Fog Lubricators
• Air Hose:1/4", 3/8" or 1/2" I.D. in
various lengths
DUTY CYCLE
Air compressors should be operated
on not more than a 50% duty cycle.
This means an air compressor that
pumps air more than 50% of one
hour is considered misuse, because
the air compressor is undersized for
the required air demand. Maximum
compressor pumping time per hour is
30 minutes.
Refer to the selection chart located
on the unit to select the tools this unit
is capable of powering.

10- ENG
D24588
Assemble Wheels
It will be necessary
to brace or support
one side of the air compressor
when installing the wheels because
the air compressor will have a ten-
dency to tip.
1. Attach wheels with shoulder
bolts and nuts as shown.
2. Tighten securely. NOTE: The air
compressor will sit level if the
wheels are properly installed.
The wheels and
handle do not pro-
vide 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.
Assemble Rubber Feet
1. Attach rubber feet with the
screws provided as shown in
previous figure.
2. Tighten securely.
Rubber
Feet
Screw
Nut
Wheel Shoulder
Bolt
ASSEMBLY
Tools Required for Assembly
1 - 9/16" socket or open end wrench
1 - 1/2" socket or open end wrench
Unpacking
1. Remove all packaging leaving
the air compressor on the pallet.
2. Remove and discard the (4)
screws holding the air compres-
sor to the pallet.
It may be neces-
sary to brace or
support one side of the air com-
pressor when removing the pallet
because the air compressor will
have a tendency to tip.
3. Carefully remove the air com-
pressor from the pallet.
Screws
Contents of Carton
1 - Air Compressor
2 - Wheels
2 - Shoulder Bolts, 3/8-16
2 - Hex Nuts, 3/8-16
2 - Rubber Bumpers
2 - Screws, 1/4-20 x .75

11- ENG D24588
INSTALLATION
HOW TO SET UP YOUR
UNIT
Location of the Air Compressor
Locate the air compressor in a clean,
dry and well ventilated area. The air
compressor should be located at
least 12" away from the wall or other
obstructions that will interfere with
the flow of air. The air compressor
pump and shroud are designed to
allow for proper cooling. The ventila-
tion openings on the compressor are
necessary to maintain proper operat-
ing temperature. Do not place rags or
other containers on or near these
openings.The air filter must be kept
clear of obstructions which could
reduce air flow to the air compressor.
GROUNDING INSTRUCTIONS
RISK OF ELECTRI-
CAL SHOCK. In
the event of a short circuit, ground-
ing reduces the risk of shock by
providing an escape wire for the
electric current. This air compres-
sor must be properly grounded.
The portable air compressor is
equipped with a cord having a
grounding wire with an appropriate
grounding plug (see following illustra-
tions). The plug must be used with
an outlet that has been installed and
grounded in accordance with all local
codes and ordinances.
1. The cord set and plug with this
unit contains a grounding pin.
This plug MUST be used with a
grounded outlet.
IMPORTANT: The outlet being used
must be installed and grounded in
accordance with all local codes and
ordinances.
2. Make sure the outlet being used
has the same configuration as
the grounded plug. DO NOT
USE AN ADAPTER. See illustra-
tion.
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 ground-
ed, have the installation checked
by a qualified electrician.
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 elec-
trician.
Grounding Pin
Grounded
Outlets
Plug

12- ENG
D24588
Extension Cords
Using extension cords is not recom-
mended. The use of extension cords
will cause voltage to drop resulting in
power loss to the motor and over-
heating.
Instead of using extension cords
attach extra air hoses to each other
starting at the air outlet.
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
• 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.)
Voltage and Circuit Protection
Refer to the specification table for the
voltage and minimum branch circuit
requirements.
Certain air compressors can be oper-
ated on a 15 amp circuit if the follow-
ing conditions are met.
1. Voltage supply through branch
circuit is 15 amps.
2. Circuit is not used to supply any
other electrical needs (lights,
appliances, etc.).
3. Extension cords comply with
specifications.
4. Circuit is equipped with a 15
amp circuit breaker or 15 amp
time delay fuse. NOTE: If com-
pressor 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 if operation of the com-
pressor repeatedly causes interrup-
tion of the power, it may be neces-
sary to operate it from a 20 amp cir-
cuit. It is not necessary to change the
cord set.

13- ENG D24588
Tank Pressure Gauge: The tank
pressure gauge indicates the reserve
air pressure in the tank.
Regulator: Controls the air pressure
shown on the outlet pressure gauge.
Pull the knob out and turn clockwise
to increase pressure and counter-
clockwise to decrease pressure.
When the desired pressure is reached
push knob in to lock in place.
Drain Valve: The drain valve is locat-
ed at the base of the air tank and is
used to drain condensation at the
end of each use.
Cooling System (not shown): This
compressor contains an advanced
design cooling system. At the heart
of this cooling system is an engi-
neered fan. It is perfectly normal for
this fan to blow air through the vent
holes in large amounts. You know
that the cooling system is working
when air is being expelled.
Description of Operation
Become familiar with these controls
before operating the unit.
On/Auto/Off Switch: Turn this switch
ON to provide automatic power to
the pressure switch and OFF 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" pres-
sure. 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 will protect against high
pressure by "popping out" at its fac-
tory set pressure (slightly higher than
the pressure switch "cut-out" setting).
Outlet Pressure Gauge: The outlet
pressure gauge indicates the air pres-
sure 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.
OPERATION
Know Your Air Compressor
READ THIS OWNER’S MANUAL AND SAFETY RULES BEFORE OPERATING
YOUR UNIT. Compare the illustrations with your unit to familiarize yourself with
the location of various controls and adjustments. Save this manual for future
reference.
Drain
Valve
Safety Valve
On/Auto/Off
Switch
Regulator
Outlet
Pressure
Gauge
Tank Pressure Gauge
Pressure
Switch

14- ENG
D24588
Air Compressor Pump (not shown):
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.
Check Valve: When the air compres-
sor is operating, the check valve is
"open”, allowing compressed air to
enter the air tank. When the air com-
pressor reaches "cut-out" pressure,
the check valve "closes”, allowing air
pressure to remain inside the air tank.
Pressure Release Valve: The pres-
sure release valve located on the side
of the pressure switch, is designed to
automatically release compressed air
from the compressor head and the
outlet tube when the air compressor
reaches "cut-out" pressure or is shut
off. The pressure release valve allows
the motor to restart freely. When the
motor stops running, air will be heard
escaping from this valve for a few
seconds. No air should be heard
leaking when the motor is running or
after the unit reaches "cut-out" pres-
sure.
Motor Overload Protector: The
motor has an automatic reset thermal
overload protector. If the motor over-
heats for any reason, the overload
protector will shut off the motor. The
motor must be allowed to cool down
before restarting. The compressor
will automatically restart after the
motor cools.
Check Valve
Pressure
Release
Valve
Before First Start-up
Serious damage
may result if the
following break-in instructions are
not closely followed.
This procedure is required before the
air compressor is put into service and
when the check valve or a complete
compressor pump has been
replaced.
1. Make sure the On/Auto/Off lever
is in the "OFF" position.
NOTE: If quick connect is installed,
pull coupler back until it clicks to pre-
vent air from escaping through the
quick connect.
2.
Plug the power cord into the cor-
rect branch circuit receptacle.
(Refer to Voltage and Circuit
Protection paragraph in the
Installation section of this manu-
al.)
3. Open the drain valve fully (coun-
terclockwise) to permit air to
escape and prevent air pressure
build up in the air tank during the
break-in period.
NOTE: Always drain tank on a wash-
able surface or in a suitable container
to prevent damaging or staining sur-
faces.
How to Use Your Unit
How to Stop:
1. Set the On/Auto/Off lever to
"OFF”.
If the overload protector shuts the
motor off frequently, check for a pos-
sible voltage problem. Low voltage
can also be suspected when:
1. The motor does not get up to full
power or speed.
2. Fuses blow out when starting
the motor; lights dim and remain
dim when motor is started and is
running.

15- ENG D24588
How to Start:
1. Turn the On/Auto/Off lever to
"AUTO" and allow tank pressure
to build. Motor will stop when
tank pressure reaches "cut-out"
pressure.
2. Pull the regulator knob out and
turn clockwise to increase pres-
sure. When the desired pressure
is reached push knob in to lock
in place. The compressor is
ready for use.
NOTE: Always operate the air com-
pressor in well-ventilated areas free
of gasoline or other combustible
vapors. If the compressor is being
used to operate a sprayer DO NOT
place near the spray area.
Before Each Start-Up:
1. Place On/Auto/Off lever to
"OFF”.
2. Pull regulator knob out, turn
counterclockwise until it stops.
Push knob in to lock in place.
3. Attach hose and accessories.
NOTE: The hose or accessory
will require a quick connect plug
if the air outlet is equipped with a
quick connect.
Too much air pres-
sure causes a haz-
ardous risk of bursting. Check the
manufacturer’s maximum pressure
rating for air tools and accessories.
The regulator outlet pressure must
never exceed the maximum pres-
sure rating.
4. Move the On/Auto/Off lever to
"ON/AUTO" position. The com-
pressor will start.
5. Run the compressor for 15 min-
utes. Make sure the drain valve is
open and there is minimal air
pressure build-up in tank.
6. After 15 minutes, close the drain
valve (clockwise). The air receiver
will fill to "cut-out" pressure and
the motor will stop.
The compressor is now ready for use.

16- ENG
D24588
MAINTENANCE
Customer Responsibilities
Daily or
after
each
use
Before
each
use
●●●
Every
40
hours
Every
100
hours
Yearly
●(1)
1- more frequent in dusty or humid conditions
Check Safety Valve
Drain Tank
Air Filter
NOTE: See "Operation" section for
the location of controls.
To ensure efficient operation and
longer life of the air compressor out-
fit, a routine maintenance schedule
should be prepared and followed.
The following routine maintenance
schedule is geared to an outfit in a
normal working environment operat-
ing on a daily basis. If necessary, the
schedule should be modified to suit
the conditions under which your
compressor is used. The modifica-
tions will depend upon the hours of
operation and the working environ-
ment. Compressor outfits in an
extremely dirty and/or hostile environ-
ment will require a greater frequency
of all maintenance checks.
Unit cycles auto-
matically when
power is on. When performing
maintenance, you may be exposed
to voltage sources, compressed
air, or moving parts. Personal
injuries can occur. Before perform-
ing any maintenance or repair, dis-
connect power source from the
compressor and bleed off all air
pressure.
To Check Safety Valve
If the safety valve
does not work
properly, over-pressurization may
occur, causing air tank rupture or
an explosion.
1. 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.
Air compressor pump intake
and exhaust valves ●
To Drain Tank
1. Set the On/Auto/Off lever to
"OFF”.
2. Pull the regulator knob out and
turn clockwise to set the outlet
pressure to zero.
3. Remove the air tool or accesso-
ry.
4. Pull ring on safety valve allowing
air to bleed from the tank until
tank pressure is approximately
20 psi. Release safety valve ring.
5. Drain water from air tank by
opening drain valve (counter-
clockwise) on bottom of tank.
Water will con-
dense in the air
tank. If not drained, water will cor-
rode and weaken the air tank caus-
ing a risk of air tank rupture.

17- ENG D24588
6. After the water has been drained,
close the drain valve (clockwise).
The air compressor can now be
stored.
NOTE: If drain valve is plugged,
release all air pressure. The valve
can then be removed, cleaned, the
reinstalled.
Air Filter Inspection and
Replacement
Hot surfaces. Risk
of burn.
Compressor heads are exposed
when filter cover is removed.
Allow compressor to cool prior to
servicing.
A dirty air filter will not allow the com-
pressor to operate at full capacity.
Keep the air filter clean at all times.
1. Remove the air filter retainer.
Air Compressor Pump Intake
and Exhaust Valves
Once a year have a Trained Service
Technician check the air compressor
pump intake and exhaust valves.
2. Remove the air filter and make
sure it is clean.
IMPORTANT: Do not operate the
compressor with the air filter
removed.
3. If dirty, rinse air filter with warm
water and squeeze dry.
4. Replace air filter and air filter
retainer.
NOTE: If the air filter is extremely
dirty it will need to be replaced. Refer
to the "Repair Parts" for the correct
part number.
Air Filter
Air Filter
Retainer

18- ENG
D24588
SERVICE AND ADJUSTMENTS
5. Using an adjustable wrench,
loosen pressure relief tube nut at
air tank and pressure switch.
Carefully move pressure relief
tube away from check valve.
6. Unscrew the check valve (turn
counterclockwise) using a 7/8"
open end wrench. Note the ori-
entation for reassembly.
7. Using a screwdriver, carefully
push the valve disc up and
down. NOTE: The valve disc
should move freely up and down
on a spring which holds the valve
disc in the closed position; if not
the check valve needs to be
cleaned or replaced.
8. Clean or replace the check valve.
A solvent, such as paint or var-
nish remover can be used to
clean the check valve.
9. Apply sealant to the check valve
threads. Reinstall the check valve
(turn clockwise).
10. Replace the pressure release
tube. Tighten nut.
11. Replace the outlet tube and
tighten nut.
12. Replace the shroud and air filter.
13. Perform the Break-in Procedure.
See "Break-in Procedure" in the
Operation section.
Unit cycles auto-
matically when
power is on. When doing
Maintenance, you may be exposed
to voltage sources, compressed air
or moving parts. Personal injuries
can occur. Before performing any
Maintenance or repair, unplug the
compressor and bleed off all air
pressure.
ALL MAINTENANCE AND REPAIR
OPERATIONS NOT LISTED MUST
BE PERFORMED BY A TRAINED
SERVICE TECHNICIAN.
To Replace or Clean Check
Valve
1. Release all air pressure from air
tank. See "To Drain Tank" in the
Maintenance section.
2. Unplug outfit.
3. Remove shrouds.
4. Using an adjustable wrench,
loosen outlet tube nut at air tank
and pump. Carefully move outlet
tube away from check valve.
Outlet Tube
Check
Valve
Nut
Nut
Pressure
Relief
Tube
In closed position
disc is visible.
In open
position
nothing is
visible.
Screwdriver
Before servicing:
• Unplug or disconnect electrica
supply to the air compressor.
• Bleed tank of pressure.
• Allow the air compressor to
cool.

To Replace Regulator
1. Release all air pressure from air
tank. See "To Drain Tank" in the
Maintenance section.
2. Unplug air compressor.
3. Remove the outlet pressure
gauge and quick connect (if
equipped) from the regulator.
4. Remove the regulator.
5. Apply pipe sealant tape to the
nipple.
19- ENG D24588
6. Assemble the regulator and ori-
ent as shown.
NOTE: Arrow indicates flow of air.
Make sure it is pointing in the direc-
tion of air flow.
7. Reapply pipe sealant to outlet
pressure gauge and quick con-
nect.
8. Reassemble outlet pressure
gauge and quick connect. Orient
outlet pressure gauge to read
correctly. Tighten quick connect
with wrench.
Nipple
Outlet
Pressure
Gauge
Quick
Connect
Regulator
Regulator
Arrow
Regulator

20- ENG
D24588
STORAGE
Before you store the air compressor,
make sure you do the following:
1. Review the "Maintenance" sec-
tion on the preceding pages and
perform scheduled maintenance
as necessary.
2. Set the On/Auto/Off lever to
"OFF”.
3. Turn the regulator counterclock-
wise and set the outlet pressure
to zero.
4. Remove the air tool or accesso-
ry.
5. Pull ring on safety valve allowing
air to bleed from the tank until
tank pressure is approximately
20 psi. Release safety valve ring.
6. Drain water from air tank by
opening drain valve on bottom of
tank.
Water will con-
dense in the air
tank. If not drained, water will cor-
rode and weaken the air tank caus-
ing a risk of air tank rupture.
7. After the water has been drained,
close the drain or drain valve.
NOTE: If drain valve is plugged,
release all air pressure. The valve
can then be removed, cleaned, then
reinstalled.
8. Protect the electrical cord and air
hose from damage (such as
being stepped on or run over).
Wind them loosely around the
compressor handle. (If so
equipped)
Store the air compressor in a clean
and dry location.