Craftsman PERMANENTLY LUBRICATED TANK MOUNTED AIR COMPRESSOR... User manual

Owner’s Manual
Permanently Lubricated
Tank Mounted
AIR COMPRESSOR
• Safety Guidelines
• Assembly
• Operation
• Maintenance
• Service and Adjustments
• Troubleshooting
• Repair Parts
CAUTION: Read the Safety Guidelines
and All Instructions Carefully Before
Operating.
Sears, Roebuck and Co., H "Off"man Estates, IL 60179 U.S.A.
Visit our Craftsman website: www.sears.com/craftsman
Model No.
919.167321
A17883 Rev. 0 4/24/07

2 - ENGA17883
TABLE OF CONTENTS
WARRANTY
ONE YEAR FULL WARRANTY
If this product fails due to a defect in material or workmanship within one year
from the date of purchase, Sears will at its option repair or replace it free of
charge. Contact Sears at 1-800-4-MY-HOME®to arrange for repair, or return it
to the place of purchase for replacement.
If this product is used for commercial or rental purposes, this warranty applies
for only 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, H "Off"man Estates, IL 60179
WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SPECIFICATION CHART. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SAFETY GUIDELINES - DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
IMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . 3-8
GLOSSARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
DUTY CYCLE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-11
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-14
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-16
SERVICE AND ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-18
STORAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-21
REPAIR PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22-25
ESPAÑOL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-41
REPAIR PROTECTION AGREEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . 43
HOW TO ORDER REPAIR PARTS . . . . . . . . . . . . . . . . . . . . . . back cover

3 - ENG A17883
SPECIFICATION CHART
Model No. 919.167321
Running HP 2.0
Bore 2.375"
Stroke 1.35"
Voltage-Single Phase 120V/60HZ/1PH
Minimum Branch Circuit Requirement 15 amps
Fuse Type Time Delay
Air Tank Capacity 33
Approx. Cut-In 120
Approx. Cut-out 150
SCFM @ 40 psig 8.6
SCFM @ 90 psig 6.4
*Tested per ISO 1217
Refer to Glossary for abbreviation.
SAFETY GUIDELINES - DEFINITIONS
This manual contains information that is important for you to know and under-
stand. This information relates to protecting YOUR SAFETY and PREVENTING
EQUIPMENT PROBLEMS. To help you recognize this information, we use the
symbols below. Please read the manual and pay attention to these symbols.
Indicates an
imminently hazardous
situation which, if not avoided, will
result in death or serious injury.
Indicates a potentially
hazardous situation
which, if not avoided, may result in
minor or moderate injury.
Indicates a potentially
hazardous situation
which, if not avoided, could result in
death or serious injury.
Used without the
safety alert symbol
indicates a potentially hazardous
situation which, if not avoided, may
result in property damage.
IMPORTANT SAFETY INSTRUCTIONS
Some dust created by power sanding, sawing, grinding,
drilling, and other construction 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
OSHA/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 personal injury.
This product contains chemicals, known to the State of
California to cause cancer, and birth defects or other
reproductive harm. Wash hands after handling.
Do not operate this unit until you read and
understand this instruction manual for safety,
operation and maintenance instructions.

4 - ENGA17883
SAVE THESE INSTRUCTIONS
HAZARD
RISK OF EXPLOSION OR FIRE
WHAT CAN HAPPEN HOW TO PREVENT IT
• It is normal for electrical contacts
within the motor and pressure
switch to spark.
• Always operate the compressor in a
well ventilated area free of combus-
tible materials, gasoline, or solvent
vapors.
• If electrical sparks from compressor
come into contact with flammable
vapors, they may ignite, causing fire
or explosion.
• If spraying flammable materials,
locate compressor at least 20 feet
(6.1 m) away from spray area. An
additional length of air hose may be
required.
• Store flammable materials in a
secure location away from com-
pressor.
• Restricting any of the compressor
ventilation openings will cause seri-
ous overheating 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.
• Unattended operation of this prod-
uct could result in personal injury
or property damage. To reduce the
risk of fire, do not allow the com-
pressor to operate unattended.
• Always remain in attendance with
the product when it is operating.
• Always turn "Off" and unplug unit
when not in use.
HAZARD
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 con-
tain carbon monoxide, toxic vapors,
or solid particles from the air tank.
Breathing these contaminant's can
cause serious injury or death.
• Air obtained directly from the com-
pressor should never be used to
supply air for human consumption.
In order to use air produced by this
compressor for breathing, 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
applicable local and federal codes
prior to human consumption.

5 - ENG A17883
• Sprayed materials such as paint,
paint solvents, paint remover, insec-
ticides, 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:
OSHA/MSHA/NIOSH respiratory
protection designed for use with
your specific application.
HAZARD
RISK OF BURSTING
Air Tank: The air tank on your Air Compressor is designed and may be UM coded
(for units with air tanks greater than 6 inch diameter) according to ASME Section VIII,
Div. 1 rules. All pressure vessels should be inspected once every two years. To find
your state pressure vessels inspector, look under the Division of Labor and Industries
in the government section of a phone book .
The following conditions could lead to a weakening of the air tank, and result in a
violent air tank explosion:
WHAT CAN HAPPEN HOW TO PREVENT IT
• Failure to properly drain condensed
water from air tank, causing rust
and thinning of the steel air tank.
• Drain air tank daily or after each
use. If air tank develops a leak,
replace it immediately with a
new air tank or replace the entire
compressor.
• Modifications or attempted repairs
to the air tank. • Never drill into, weld, or make any modifications to the air tank or its
attachments. Never attempt to
repair a damaged or leaking air
tank. Replace with a new air tank.
• Unauthorized modifications to
the safety valve or any other
components which control air tank
pressure.
• The air tank is designed to
withstand specific operating
pressures. Never make adjustments
or parts substitutions to alter the
factory set operating pressures.
Attachments & accessories:
• Exceeding the pressure rating of
air tools, spray guns, air operated
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.

6 - ENGA17883
HAZARD
RISK OF ELECTRICAL SHOCK
WHAT CAN HAPPEN HOW TO PREVENT IT
• Your air compressor is powered by
electricity. Like any other electrically
powered device, If it is not used
properly it may cause electric
shock.
• Never operate the compressor
outdoors when it is raining or in wet
conditions.
• Never operate compressor with
protective covers removed or
damaged.
• Repairs attempted by unqualified
personnel can result in serious
injury or death by electrocution.
• Any electrical wiring or repairs
required on this product should be
performed by authorized service
center personnel 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.
Refer to "Grounding Instructions"
paragraph in the "Installation"
section.
• Make certain that the electrical
circuit to which the compressor
is connected provides proper
electrical grounding, correct voltage
and adequate fuse protection.
HAZARD
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 equip-
ment: 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 attempt-
ing maintenance, attaching tools or
accessories.

7 - ENG A17883
HAZARD
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.
HAZARD
RISK FROM MOVING PARTS
WHAT CAN HAPPEN HOW TO PREVENT IT
• Moving parts such as the pulley, fly-
wheel, and belt can cause serious
injury if they come into contact with
you or your clothing.
• Never operate the compressor with
guards or covers which are dam-
aged 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 authorized
service center personnel.

8 - ENGA17883
HAZARD
RISK OF UNSAFE OPERATION
WHAT CAN HAPPEN HOW TO PREVENT IT
• Unsafe operation of your air com-
pressor could lead to serious injury
or death to you or others.
• Review and understand all instruc-
tions and warnings in this manual.
• Become familiar with the operation
and controls of the air compressor.
• Keep operating area clear of all per-
sons, 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 features of
this product.
• Equip area of operation with a fire
extinguisher.
• Do not operate machine with miss-
ing, broken, or unauthorized parts.
HAZARD
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 compres-
sor 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.
HAZARD
RISK FROM NOISE
WHAT CAN HAPPEN HOW TO PREVENT IT
• Under some conditions and dura-
tion of use, noise from this product
may contribute to hearing loss.
• Always wear certified safety equip-
ment: ANSI S12.6 (S3.19) hearing
protection.
SAVE THESE INSTRUCTIONS
FOR FUTURE USE

9 - ENG A17883
GLOSSARY
Become familiar with these terms
before operating the unit.
CFM: Cubic feet per minute.
SCFM: Standard cubic feet per min-
ute; a unit of measure of air delivery.
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
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
Refer to the selection chart located on
the unit to select the tools this unit is
capable of powering.
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.
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.
average duty cycle be maintained;
that is, the air compressor pump
should not run more than 30-45
minutes in any given hour.
continue to use your accessory. When
the tank pressure drops to a certain
low level the motor will restart auto-
matically. The low pressure at which
the motor automatically restarts is
called "cut-in" pressure.
Cut-Out Pressure: When an air com-
pressor 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 automati-
cally 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.
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%

10 - ENGA17883
ASSEMBLY
Unpacking
1. Remove unit from carton and discard all packaging.
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" (30.5 cm)
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 ventilation
openings on the compressor are
necessary to maintain proper
operating temperature. Do not
place rags or other containers on
or near these openings.
GROUNDING INSTRUCTIONS
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 (see following
illustrations).
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 illustration.
Grounding Pin
Grounded
Outlets
Plug
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 compres-
sor is properly grounded, have the
installation checked by a qualified
electrician.
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.

11 - ENG A17883
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 overheat-
ing.
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.
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
• 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.)
Voltage and Circuit Protection
Refer to the specification chart for the
voltage and minimum branch circuit
requirements.
Risk of Opertion.
Certain air
compressors can be operated on
a 15 amp circuit if the following
conditions are met.
1. Voltage supply to circuit must
comply with the National
Electrical Code.
2. Circuit is not used to supply any
other electrical needs.
3. Extension cords comply with
specifications.
4. 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 if operation of the compres-
sor 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.

12 - ENGA17883
Regulator: Controls the air pressure
shown on the outlet pressure gauge.
Turn regulator knob clockwise to
increase pressure and counterclock-
wise to decrease pressure.
Cooling System (not shown): This
compressor contains an advanced
design cooling system. At the heart of
this cooling system is an engineered
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.
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.
Drain Valve:
Drain
Valve
The drain valve
is located at
the base of the
air tank and is
used to drain
condensation at the end of each use.
Description of Operation
Become familiar with these controls
before operating the unit.
On/Auto/Off Lever: Place this switch
in the "On/Auto" position to provide
automatic power to the pressure
switch and "Off" to remove power at
the end of each use.
Pressure Switch (not shown): 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 compres-
sor at its "cut-out" pressure setting,
the safety valve will protect against
high pressure by "popping out" at its
factory set pressure (slightly higher
than the pressure switch "cut-out"
setting).
Tank Pressure Gauge: The tank
pressure gauge indicates the reserve
air pressure in the tank.
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.
Safety Valve
On/Auto/Off
Switch Regulator
Outlet
Pressure
Gauge
Tank Pressure Gauge
Pressure
Switch

13 - ENG A17883
Check Valve: When the air
compressor is operating, the check
valve is "open", allowing compressed
air to enter the air tank. When the
air compressor reaches "cut-out"
pressure, the check valve "closes",
allowing air pressure to remain inside
the air tank.
Pressure Release Valve: The
pressure 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" pressure.
Motor Overload Protector (not
shown): The motor has an automatic
reset 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. The
compressor will automatically restart
after the motor cools.
HOW TO USE YOUR UNIT
How to Stop:
1. Set the On/Auto/Off lever to "Off".
Before Starting
Do not operate this
unit until you read
and understand this instruction
manual for safety, operation and
maintenance instructions.
Break-in Procedure
Risk of Unsafe
Operation. 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.
2.
Plug the power cord into the
correct branch circuit receptacle.
(Refer to Voltage and Circuit
Protection paragraph in the
Installation section of this
manual.)
3. Open the drain valve (counter-
clockwise) fully to permit air to
escape and prevent air pressure
build up in the air tank during the
break-in period.
4. Move the On/Auto/Off lever
to "On/Auto" position. The
compressor will start.
5. Run the compressor for 15
minutes. 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 by turning clockwise. The
air receiver will fill to "cut-out"
pressure and the motor will stop.
The compressor is now ready for use.
Before Each Start-Up:
1. Set the On/Auto/Off lever to "Off".
2. Pull the regulator knob out and
turn counterclockwise to set the
outlet pressure to zero.
3. Attach hose and accessories.
Pressure
Release
Valve
Check Valve

14 - ENGA17883
Risk of unsafe
operation. Firmly
grasp air hose in hand when
installing or disconnecting to
prevent hose whip.
Risk of unsafe
operation. Do not
use damaged or worn accessories.
NOTE: The hose or accessory will
require a quick connect plug if the air
outlet is equipped with a quick con-
nect socket.
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.
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 tools and
accessories may require filtered
air. Read the instructions for the air
tools and accessories.
How to Start:
1. Set the On/Auto/Off lever to "On/
Auto" and allow tank pressure to
build. Motor will stop when tank
pressure reaches "cut-out" pres-
sure.
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.
If any unusual
noise or vibration
is noticed, stop the compressor
immediately and have it checked by
a trained service technician.
The compressor is ready for use.

15 - ENG A17883
MAINTENANCE
Unit cycles
automatically when
power is on. When performing
maintenance, you may be exposed
to voltage sources, compressed air,
or moving parts. Personal injuries
can occur. Before performing any
maintenance or repair, disconnect
power source from the compressor
and bleed "Off" all air pressure.
NOTE: See Operation section for the
location of controls.
To Check Safety Valve
Risk of Bursting.
If the safety valve
does not work properly, over-
pressurization may occur, causing
air tank rupture or an explosion.
Risk from Flying
Objects. Always
wear certified safety equipment:
ANSI Z87.1 eye protection (CAN/CSA
Z94.3) with side shields
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.
To Drain Tank
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 ANSI Z87.1 eye protection
(CAN/CSA Z94.3) when draining as
debris can be kicked up into face.
Use ear protection (ANSI S12.6
(S3.19) hearing protection) as air
flow noise is loud when draining.
1. Set the On/Auto/Off lever to "Off".
2. Pull the regulator knob out and
turn counterclockwise to set the
outlet pressure to zero.
3. Remove the air tool or accessory.
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 on bottom of
tank.
Risk of Bursting.
Water will condense
in the air tank. If not drained, water
will corrode and weaken the air tank
causing a risk of air tank rupture.
Risk of Property
Damage. Drain
water from air tank may contain oil
and rust which can cause stains.
6. After the water has been drained,
close the drain valve. 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.
Customer Responsibilities
Daily
or after
each
use
Before
each
use
●
●
Every
100
hours Yearly
●1
1- more frequent in dusty or humid conditions
Check Safety Valve
Drain Tank
Air Filter
Air compressor pump intake
and exhaust valves ●

16 - ENGA17883
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.
Keep the air filter
clean at all times.
Do not operate the air compressor
with the air filter removed.
A dirty air filter will not allow the
compressor to operate at full
capacity. Keep the air filter clean at
all times.
1. Remove the air filter and make
sure it is clean.
IMPORTANT: Do not operate the
compressor with the air filter
removed.
2. If dirty, rinse air filter with warm
water and squeeze dry.
3. Replace air filter.
4. Replace filter cover.
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 Compressor Pump Intake
and Exhaust Valves
Once a year have a Trained Service
Technician check the air compressor
pump intake and exhaust valves.
Air Filter

17 - ENG A17883
To Replace or Clean Check
Valve
1. Release all air pressure from air
tank. See "To Drain Tank" in the
Maintenance section.
2. Set the On/Auto/Off lever to "Off"
and unplug unit.
3. Using an adjustable wrench,
loosen outlet tube nut at air tank
and pump. Carefully move outlet
tube away from check valve.
4. Using an adjustable wrench,
loosen pressure relief tube nut
at air tank and pressure switch.
Carefully move pressure relief
tube away from check valve.
5. Unscrew the check valve (turn
counterclockwise) using a 7/8"
open end wrench. Note the
orientation for reassembly.
6. 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.
SERVICE AND ADJUSTMENTS
ALL MAINTENANCE AND REPAIR OPERATIONS NOT LISTED MUST BE
PERFORMED BY TRAINED SERVICE TECHNICIAN.
Risk of Unsafe Operation. Unit cycles automatically when
power is on. When servicing, you may be exposed to
voltage sources, compressed air, or moving parts. Before servicing unit
unplug or disconnect electrical supply to the air compressor, bleed tank of
pressure, and allow the air compressor to cool.
7. Clean or replace the check
valve. A solvent, such as paint or
varnish remover can be used to
clean the check valve.
8. Apply sealant to the check valve
threads. Reinstall the check valve
(turn clockwise).
9. Replace the pressure release
tube. Tighten nuts.
10. Replace the outlet tube and
tighten nuts.
11. Perform the Break-in Procedure.
See "Break-in Procedure" in the
Operation section.
To Replace Regulator
1. Release all air pressure from air
tank. See "To Drain Tank" in the
Maintenance section.
2. Set the On/Auto/Off lever to "Off"
and unplug unit.
3. Remove the outlet pressure
gauge and quick connect (if
equipped) from the regulator.
Outlet Tube
Check
Valve
Nut
Nut
Pressure
Relief
Tube
In closed position
disc is visible.
In open
position
nothing is
visible.
Screwdriver

18 - ENGA17883
NOTE: Arrow indicates flow of air.
Make sure it is pointing in the
direction of air flow.
7. Reapply pipe sealant to outlet
pressure gauge and quick
connect.
8. Reassemble outlet pressure
gauge and quick connect. Orient
outlet pressure gauge to read
correctly. Tighten quick connect
with wrench.
4. Remove the regulator.
5. Apply pipe sealant tape to the
nipple.
6. Assemble the regulator and
orient as shown.
Outlet
Pressure
Gauge
Quick
Connect
Regulator Regulator
Arrow
Regulator
Niple
STORAGE
Before you store the air compressor,
make sure you do the following:
1. Review the Maintenance section
on the preceding pages and per-
form scheduled maintenance as
necessary.
2. Set the On/Auto/Off lever to "Off"
and unplug unit.
3. Turn the regulator counterclock-
wise and set the outlet pressure to
zero.
4. Remove the air tool or accessory.
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 open-
ing drain valve on bottom of tank.
Risk of Bursting.
Water will condense
in the air tank. If not drained, water
will corrode and weaken the air tank
causing a risk of air tank rupture.
7. After the water has been drained,
close drain valve by turning clock-
wise.
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 com-
pressor handle.
9. Store the air compressor in a
clean and dry location.

19 - ENG A17883
TROUBLESHOOTING
PROBLEM CAUSE CORRECTION
Pressure switch does not
shut "Off" motor when
compressor reaches
"cut-out" pressure.
Pressure switch "cut-out"
too high.
Move On/Auto/Off lever to
the "Off" position, if the unit
does not shut "Off"
contact a Trained Service
Technician.
Contact a Trained Service
Technician.
Excessive tank
pressure - safety
valve pops "Off".
Tube fittings are not tight
enough.
Tighten fittings where air
can be heard escaping.
Check fittings with soapy
water solution. Do Not
Overtighten.
Air leaks at
fittings.
Air leaks at
pressure switch
release valve.
Defective pressure switch
release valve.
Contact a Trained Service
Technician.
Air leaks in air
tank or at air
tank welds.
Defective air tank.
Air leaks
between head
and valve plate.
Leaking seal.
Air leaks at or
inside check
valve.
Check valve seat damaged. A defective check valve
results in a constant air leak
at the pressure release valve
when there is pressure in the
tank and the compressor is
shut "Off". Replace check
valve. Refer to the "To
Replace or Clean Check
Valve" in the "Service and
Adjustment" section.
Contact a Trained Service
Technician.
Air tank must be replaced.
Do not repair the leak.
Risk of
Bursting.
Do not drill into, weld or
otherwise modify air tank
or it will weaken. The tank
can rupture or explode.
Risk of Unsafer Operation. Performing repairs may
expose voltage sources, moving parts, or compressed
air sources. Personal injury may occur. Before servicing: Unplug or
disconnect electrical supply to the air compressor, bleed tank of pressure,
and allow the air compressor to cool.

20 - ENGA17883
PROBLEM CAUSE CORRECTION
It is normal for "some"
pressure drop to occur.
If there is an excessive
amount of pressure drop
when the accessory is used,
adjust the regulator following
the instructions in the
"Description of Operation"
paragraph in the Operation
Section.
NOTE: Adjust the regulated
pressure under flow
conditions (while accessory is
being used).
Possible defect in safety
valve.
Operate safety valve
manually by pulling on ring.
If valve still leaks, it should
be replaced.
Defective check valve. Remove and clean, or
replace.
Knocking Noise.
Compressor is
not supplying
enough air
to operate
accessories.
Prolonged excessive use of
air.
Compressor is not large
enough for air requirement.
Hole in hose.
Check valve restricted.
Air leaks.
Restricted air intake filter.
Decrease amount of air
usage.
Check the accessory air
requirement. If it is higher
than the SCFM or pressure
supplied by your air
compressor, you need a
larger compressor.
Check and replace if
required.
Remove and clean, or
replace.
Tighten fittings.
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.
Damaged regulator. Replace.
Regulator knob
has continuous
air leak.
Pressure reading
on the regulated
pressure gauge
drops when an
accessory is
used.