Craftsman 919.724321 User Manual
Owner’s Manual
Permanently Lubricated
Single Stage
Portable
AIR COMPRESSOR
Model No.
919.724321
• Safety Guidelines
• Assembly
• Operation
• Maintenance
• Service and Adjustments
• Troubleshooting
• Repair Parts
CAUTION: Read the Safety Guidelines
and All Instructions Carefully Before
Operating.
Sold by Sears Canada, Inc. Toronto, Ont. M5B 2B8
A14411 Rev. 0 9/08/05
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
HOW TO ORDER REPAIR PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
WARRANTY
FULL ONE YEAR WARRANTY
If this CRAFTSMAN Inflator 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 your nearest Sears Service Center (1-8004-MY-HOME®) to arrange for product repair, or return the CRAFTSMAN
product to the place of purchase for replacement.
If this Air Compressor 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 also have other
rights which vary from province to province.
Sears Canada, Inc. Toronto, Ont. M5B 2B8
A14411
2- ENG
SPECIFICATION CHART
Model No. 919-724321
Running HP ----Bore 2.375"
Stroke 1.35"
Voltage-Single Phase 120
Minimum Branch Circuit Requirement 15 amps
Fuse Type Time Delay
Air Tank Capacity 30
Approx. Cut-In 120
Approx. Cut-out 150
SCFM @ 40 psig 7.8
SCFM @ 90 psig 5.5
Refer to Glossary for abbreviations.
SAFETY GUIDELINES - DEFINITIONS
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 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, could result in
death or serious injury.
which, if not avoided, may result in minor
or moderate injury.
indicates a potentially hazardous situation
which, if not avoided, may result in
property damage.
Indicates a potentially
hazardous situation
Used without the
safety alert symbol
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 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 personal injury.
3- ENG
A14411A14411
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
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
ventilation openings will cause serious
overheating and could cause fire.
Unattended operation of this product
could result in personal injury or
property damage. To reduce the risk
of fire, do not allow the compressor to
operate unattended.
How To Prevent It
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
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 disconnect electrical power by
moving pressure switch lever to the off
position and drain tank daily or after
each use.
A14411
4- ENG
HAZARD
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.
What Could Happen
Failure to properly drain condensed
water from tank, causing rust and
thinning of the steel tank.
Modifications or attempted repairs to
the tank.
Unauthorized modifications to the
unloader valve, safety valve, or any
other components which control tank
pressure.
Excessive vibration can weaken the
air tank and cause rupture or
explosion
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.
HAZARD
How To Prevent It
Drain tank daily or after each use. If tank
develops a leak, replace it immediately
with a new tank or replace the entire
compressor.
Never drill into, weld, or make any
modifications to the tank or its
attachments.
The tank is designed to withstand specific
operating pressures. Never make
adjustments 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 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.
WARNING: Risk from Flying Objects
What Could 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.
How To Prevent It
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.
5- ENG
A14411
HAZARD
WARNING: Risk of Electrical Shock
What Could Happen
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
personnel 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.
HAZARD
WARNING: Risk to Breathing
What Could Happen
The compressed air directly from your
compressor is not safe for breathing.
The air stream may contain carbon
monoxide, toxic vapors, or solid
particles from the tank. Breathing these
contaminants can cause serious injury
or death.
Sprayed materials such as paint, paint
solvents, paint remover, insecticides,
weed killers, may contain harmful
vapors and poisons.
How To Prevent It
Never operate the compressor outdoors
when it is raining or in wet conditions.
Never operate compressor with
protective 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
electrical codes.
Make certain that the electrical circuit
to which the compressor is connected
provides proper electrical grounding,
correct voltage and adequate fuse protection.
How To Prevent It
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
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.
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. Use a NIOSH/MSHA
approved respirator designed for use
with your specific application.
A14411
6- ENG
HAZARD
WARNING: Risk of Burns
What Could Happen
Touching exposed metal such as the
compressor head or outlet tubes, can
result in serious burns.
HAZARD
WARNING: Risk from Moving Parts
What Could Happen
Moving parts such as the pulley,
flywheel, and belt can cause serious
injury
if they come into contact with you
or your clothing.
Attempting to operate
damaged or missing parts
attempting to repair compressor with
protective shrouds removed can expose
you to moving parts and
serious injury.
compressor with
or
can result in
HAZARD
How To Prevent It
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
Never operate the compressor with
guards or covers which are
removed.
Any
repairs required on this product
should be performed by authorized
service center personnel.
damaged or
WARNING: Risk of Falling
What Could Happen
A portable
a table, workbench, or roof c
damage to the compressor and could
result in serious injury or death to the
operator.
compressor can fall from
ausing
How To Prevent It
Always operate compressor in a stable
secure position to prevent accidental
movement of the unit.
compressor on a roof or other elevated
position. Use additional air hose to
reach high locations.
7- ENG
Never operate
A14411
HAZARD
WARNING: Risk of Serious Injury or Property Damage
When Transporting Compressor
(Fire, Inhalation, Damage to Vehicle Surfaces)
What Could Happen
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.
HAZARD
WARNING: Risk of Unsafe Operation
How To Prevent It
Always place COMPRESSOR on a
protective mat when transporting to
protect against damage to vehicle from
leaks. Remove COMPRESSOR from
vehicle immediately upon arrival at your
destination.
What Could Happen
Unsafe operation of your air compressor
could lead to serious injury or death to
you or others.
SAVE THESE INSTRUCTIONS
How To Prevent It
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 features of this
product.
Equip area of operation with a fire
extinguisher.
Do not operate machine with missing,
broken, or unauthorized parts.
A14411
8- ENG
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 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 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: Circuit carrying electricity from electrical panel to outlet.
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.
Accessories
• In Line Filter
• Tire Air Chuck
• Quick Connector Sets (various
sizes)
Refer to the selection chart located on the unit to select the tools this unit is
capable of powering.
• Air Pressure Regulators
• Oil Fog Lubricators
• Air Hose:1/4", 3/8" or 1/2" I.D. in
various lengths
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.
9- ENG
A14411A14411
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"
ASSEMBLY
Assemble Wheels
It will be neces-
sary to brace or
support one side of the outfit when
installing the wheels because the
compressor will have a tendency
to tip.
1. Attach wheels with shoulder
bolts and nuts as shown.
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.
Screws
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.
-
-
-
Nut
-
Wheel
2. Tighten securely. NOTE: The out-
fit will sit level if the wheels are
properly installed.
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.
Assemble Rubber Feet
1. Attach rubber feet with the
screws provided as shown in
previous figure.
2. Tighten securely.
Rubber
Feet
Screw
Shoulder
Bolt
A14411
10- ENG
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 ventilation openings on the compressor are
necessary to maintain proper operating 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 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). 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
illustration.
Plug
Grounded
Outlets
Grounding Pin
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.
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
A14411
Extension Cords
Using extension cords is not recommended. The use of extension cords
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
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 Parts Manual for the
voltage and minimum branch circuit
requirements.
Risk of Unsafe
Operation. 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
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.
A14411
12- ENG
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.
Pressure
Switch
On/Auto/Off
Switch
Tank Pressure Gauge
Safety Valve
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" pressure. It stops the motor when the air
tank pressure reaches the factory set
"cut-out" pressure.
Safety Valve: If the pressure switch
does not shut off the air compressor
at its "cut-out" pressure setting, the
safety valve will protect against high
pressure by "popping out" at its factory set pressure (slightly higher than
the pressure switch "cut-out" setting).
Outlet Pressure Gauge: The outlet
pressure gauge indicates the air pressure available at the outlet side of the
regulator. This pressure is controlled
by the regulator and is always less
than or equal to the tank pressure.
Tank Pressure Gauge: The tank
Outlet
Pressure
Gauge
Universal
QuickConnect
Body
Regulator
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 counterclockwise to decrease pressure.
When the desired pressure is reached
push knob in to lock in place.
Universal Quick-Connect Body:
The universal quick-connect body
accepts the three most popular styles
of quick-connect plugs- Industrial,
automotive (Tru-flate), and ARO. One
hand push-to-connect operation
makes connections simple and easy.
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.
Drain
Valve
13- ENG
A14411
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.
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.
Check Valve
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.
Pressure
Release
Valve
No air should
be heard
leaking when
the motor is
running, or
continuous
leaking after unit reaches "cut-out"
pressure.
How to Use Your Unit
How to Stop:
1. Set the On/Auto/Off lever to
"OFF".
Before Starting
Break-in instructions
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.
NOTE: If quick connect is installed,
pull coupler back until it clicks to
prevent air from escaping through the
quick connect.
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 fully (coun-
ter-clockwise) 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 washable surface or in a suitable container
to prevent damaging or staining surfaces.
4. Move the On/Auto/Off lever to
"ON/AUTO" position. The compressor will start.
A14411
14- ENG
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 (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. Place On/Auto/Off lever to
"OFF".
2. Pull regulator knob out, turn
counter-clockwise 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.
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.
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 pressure. When the desired pressure
is reached push knob in to lock
in place. The compressor is
ready for use.
15- ENG
A14411
Loading...