Craftsman 921.169130 User Manual
Owner's IVlanual
CRRFTSl4Rli
AiR COMPRESSOR
20-gallon
1.5 HP
Oil=Free, Direct Drive
Model No. 921.169130
CAUTION"
Before using this product,
read this manual and follow
all its Safety Rules and
Operating instructions.
Sears Brand Management Corporation, Hoffman Estates, IL 60179 U.S.A.
WWW. se a r s. co ITt/c r a{1csITt a rll
07/16/2012
Part No. E106172
• Safety instructions
• Installation & Operation
• Maintenance & Storage
• Troubleshooting Guide
• Parts List
• Espa5ol, p. 10
Table of Contents
Page
Warranty .............................................................. See Below
Safety Symbols .......................................................... 1
Important Safety Instructions & Guidelines ..................................... 1
Specifications ............................................................ 2
Glossary ................................................................ 2
Duty Cycle .............................................................. 2
Parts & Features .......................................................... 3
Installation & Assembly .................................................... 4
Operating Procedures ..................................................... 5
Maintenance ............................................................. 6
Storage ................................................................ 6
Troubleshooting Guide ..................................................... 7
Exploded View ........................................................... 8
Parts List ............................................................... 9
EspaSol ................................................................ 10
ONE YEAR FULL WARRANTY ON CRAFTSMAN AIR COMPRESSOR
If this Craftsman Air Compressor fails due to manufacturer's defects in material or workmanship
within one year of the date of purchase, RETURN IT TO THE NEAREST SEARS STORE OR
SERVICE CENTER IN THE UNITED STATES and it will be replaced or repaired (at our option),
free of charge.
If this Air Compressor is used for commercial or rental purposes, this warranty applies for only 90
days from the date of purchase. This warranty gives you specific legal rights and you may also
have other rights which vary from state to state.
Sears Brand Management Corporation, Hoffman Estates, IL 60179 U.S.A.
Safety Symbols
The information listed below should be read and understood by the operator. This information is given to protect the
user while operating and storing the air compressor. We utilize the symbols below to allow the reader to recognize important
information about their safety.
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
Indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury.
When used without the safety alert symbol indicates a
potentially hazardous situation which, if not avoided,
may result in property damage.
important Safety instructions and Guidelines
• Save all instructions
Improper operation or maintenance of this product could result in serious injury and/or property damage. Read and
understand all of the warnings and safety instructions provided before using this equipment.
The air compressor should be operated on a dedicated 15 amp circuit. If the circuit
does not have 15 free amps available, a larger circuit must be used. Always use more
air hose before utilizing extension cords. All extension cords used must be 12 gauge
with a maximum length of 25 ft. The circuit fuse type must be a time delay. Low voltage
could cause damage to the motor.
Risk of Moving Parts
Risk of Burns
Risk of Falling
Risk from Flying Objects
If the air compressor is in operation, all guards and covers should be attached or
installed correctly. If any guard or cover has been damaged, do not operate the
equipment until the proper personnel has correctly repaired the equipment. The power
cord should be free of any moving parts, twisting and/or crimping while in use and
while in storage.
There are surfaces on your air compressor that while in operation and thereafter can
cause serious burns if touched. The equipment should be allowed time to cool before
any maintenance is attempted. Items such as the compressor pump and the outlet
tube are normally hot during and after operation.
Operation of the air compressor should always be in a position that is stable. Never use
the air compressor on a rooftop or elevated position that could allow the unit to fall or
be tipped over. Use additional air hose for elevated jobs.
Always wear ANSI Z87.1 approved safety glasses with side shields when the air
compressor is in use. Turn off the air compressor and drain the air tank before
performing any type of maintenance or disassembly of the hoses or fittings. Never
point any nozzle or sprayer toward any part of the body or at other people or animals.
1
Important Safety Instructions & Guidelines
Risk of Breathing
Risk of
Electrical Shock
Risk of
Explosion or Fire
Risk of Bursting
Avoid using the air compressor in confined areas. Always have adequate space
(12 inches) on all sides of the air compressor. Also keep children, pets, and others out
of the area of operation. This air compressor does not provide breathable air for anyone
or any auxiliary breathing device. Spraying material will always need to be in another
area away from the air compressor to not allow intake air to damage the air compressor
Never utilize the air compressor in the rain or wet conditions. Any electrical issues
or repairs should be performed by authorized personnel such as an electrician and
should comply with all national and local electrical codes. The air compressor should
also have the proper three prong grounding plug, correct voltage, and adequate fuse
protection.
Never operate the compressor near combustible materials, gasoline or solvent vapors.
If spraying flammable materials, locate the air compressor at least 20 feet away from
the spray area. Never operate the air compressor indoors or in a confined area.
Always drain the air compressor tank daily or after each use. If the tank develops a leak,
then replace the air compressor. Never use the air compressor after a leak has been
found or try to make any modifications to the tank. Never modify the air compressor's
factory settings which control the tank pressure or any other function.
Specifications
Pump ......................... Oil-Free Direct Drive
Motor .................................... 1.5 HP
Bore ....................................... 2.28"
Stroke ...................................... 0.87"
Voltage Single Phase ...................... 120 VAC
Minimum Circuit Requirement .............. 15.0 Amps
Air Tank Capacity ........................ 20 Gallons
Cut-in Pressure ........................... 120 PSI
Cut-out Pressure .......................... 150 PSI
SCFM @ 90 PSI ............................... 3.8
SCFM @ 40 PSI ............................... 5.1
Glossary
CFM: Cubic feet per minute.
SCFM: Standard cubic feet per minute; a unit of measure
for air delivery.
PSIG: Pounds per square inch gauge; a unit of measure
for pressure.
ASME: American Society of Mechanical Engineers.
California Code: Unit may comply with California Code
462 (I)(2)/(M) (2).
Cut-In Pressure: The air compressor will automatically
start to refill the tank when the pressure drops
below the prescribed minimum.
Cut-Out Pressure: The point at which the motor stops
when the tank has reached maximum air
pressure.
Code Certification: Products that bear one or more of
the following marks: UL, ULc, ETL, CSA, have
been evaluated by OSHA-certified independent
safety laboratories and meet the applicable
Underwriters Laboratories Standards for Safety.
Duty Cycle
This is a 50% duty cycle air compressor. Do not run the air compressor more than 30 minutes of one hour. Doing so
could damage the air compressor.
Parts & Features
See figures below for reference
Tank Pressure Gauge
indicates the reserve air
pressure in the tank.
Tool Gauge
indicates the outgoing air pressure to the tool and
is controlled by the regulator.
Quick Connect
Offers a quick release feature for
attaching and removing the air hose.
H. Air Intake Filter
Provides clean air to the pump and must
always be kept free of debris. Check on a
daily basis or before each use.
Regulator
The air pressure coming from the air tank is
controlled by the regulator. To increase the pressure
turn the knob clockwise and to decrease the
pressure turn the knob counterclockwise.
I Pressure Switch
This controls the power to the motor and also |
the cut-in/cut-out pressure settings. This
switch serves as the Auto-On/Off positions
for!,e==i!i
Used to allow excess tank pressure to escape into
the atmosphere. This valve should only open when
I ank Safety Valve
the tank pressure is above the maximum rated
pressure.
Outlet Tube
/
J
I=
Relief Tube
Pressure Relief Valve
The pressure relief valve located on the side of the
pressure switch, is designed to automatically
release compressed air when the air compressor
reaches cut-out pressure. The released air should
only escape momentarily and the valve should
then dose.
Used to drain condensation from the
I ank Drain Valve
air tank. Located at bottom of tank. ,,
i heck Valve "_
When the pump is not in operation the valve |
closes to retain air pressure inside the tank. |
Installation & Assembly
The air compressor should be turned off, unplugged from
the power source, the air bled from the tank and the unit
allowed time to cool before any maintenance is performed.
Personal injuries could occur from moving parts, electrical
sources, compressed air or hot surfaces. The quick
connect assembly must be attached before use. Failure
to assemble correctly could result in leaks and possible
injury. If unsure of assembly instructions or you experience
difficulty in the assembly please call your local service
department for further information.
The wheels are disassembled. Remove 2 wheels (D),2 bolts
(E),washers (F)and 2 nuts (G)from the bag and install them
on the foot section of the tank as shown below.
D
E
properly installedand grounded in accordance with all local
codes and ordinances. Check with a qualified electrician or
service personnel if these instructions are not completely
understood or if in doubt as to whether the tool is properly
grounded. _,-_.............
Improper installation of the grounding plug will result in a
risk of electric shock. If repair or replacement of the cord
or plug is necessary, do not connect the grounding wire to
either flat blade terminal. The wire with insulation having
an outer surface that is green with or without yellow stripes
is the grounding wire. Check with a qualified electrician or
serviceman if the grounding instructions are not completely
understood, or if in doubt as to whether the product is
properly grounded. Do not modify the plug provided.
If it will not fit the outlet, have the proper outlet installed
by a qualified electrician.
Getting Started - Location of the Air Compressor
The air compressor should always be located in a clean,
dry and well ventilated environment. The unit should have
at minimum, 12 inches of space on each side. The air filter
intake should be free of any debris or obstructions.
Check the air filter on a daily basis to make sure it is clean
and in working order.
Risk Of Fire Or Explosion
This product incorporates snap action switch contacts
and a universal electric motor which tend to produce arcs
and sparking and therefore should not be exposed to
flammable liquids or vapors. This product is not intended
for installation or use in a commercial garage or shop
environment.
Grounding Instructions
This product should be grounded. In the event of an electrical
short circuit, grounding reduces the risk of electric shock
by providing an escape wire for the electric current.
This product is equipped with a cord having a grounding
wire with an appropriate grounding plug. (See the figure
below.) The plug must be plugged into an outlet that is
This product is for use on a circuit having a nominal rating
of 120 volts and is factory-equipped with aspecific electric
cord and plug to permit connection to a proper electric
circuit. Make sure the product is connected to an outlet
having the same configuration as the plug. An adapter
should not be used with this product. If the product must
be reconnected for use on a different type of electric circuit,
qualified service personnel should make the reconnection.
Extension Cords
Use only 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. Make sure your extension cord is in
good condition. When using an extension cord, be sure to
use one heavy enough to carry the current your product
will draw. Cords must not exceed 25 feet and No. 12 AWG
size must be used. An undersized cord will cause a drop
in line voltage resulting in loss of power and overheating.
Break In Procedures
No break in procedure is required by the user.
This product isfactory tested to ensure proper operation and
performance.
Operating Procedures
Daily Start=Up Procedures
1. Set the Auto-On/Off switch to the Off position.
2. Inspect the air compressor, air hose, and any
accessories/tools being used for damage or obstruction.
If any of these mentioned items are in need of repair/
replacement, contact your local authorized dealer before
use,
3. Close the drain valve.
4. Connect the air hose to the quick connect socket on
the regulator assembly by inserting the quick connect
plug on the air hose into the quick connect socket. The
quick connect socket collar will snap forward and lock
the plug into place providing an air tight seal between
the socket and plug. To release the air hose push the
collar back on the quick connect socket.
5. Plug the power cord into the proper receptacle.
6. Turn the Auto-On/Off switch to the On-Auto position and
the compressor will start and build air pressure in the
tank to cut-out pressure and then shut off automatically.
7. Adjust the regulator to a PSi setting that is needed for
your application and be sure it is within the safety
standards required to perform the task. If using a
pneumatic tool, the manufacturer should have
recommendations in the manual for that particular
tool on operating PSI settings.
8. The air compressor is now ready for use. The following
inflation and cleaning accessories packaged with this
unit should only be operated at maximum pressure
of 90PSI: Blow gun, adapter and inflation needle.
Daily Shut=Down Procedures
1. Set the Auto-On/Off switch to the Off position.
2. Unplug the power cord from the receptacle.
3. Set the outlet pressure to zero on the regulator.
4. Remove any air tools or accessories.
5. Open the drain valve allowing air to bleed from the
tank. After all of the air has bled from the tank, close
the drain valve to prevent debris buildup in the valve.
®
When draining the tank, always use ear and eye protec-
tion. Drain the tank in a suitable location; condensation
will be present in most cases of draining.
Water that remains in the tank during storage will corrode
and weaken the air tank which could cause the tank to
rupture. To avoid serious injury, be sure to drain the tank
after each use or daily.
Maintenance
NOTE: Any service procedure not covered in the
maintenance schedule should be performed by qualified
service personnel.
The air compressor should be turned off, unplugged
from the power source, air bled from the tank and
allowed time to cool before any maintenance is
Do not attempt to remove or adjust the safety valve.
Check the safety valve by performing these three steps:
1. Plug the compressor in and run until shut-off pressure
is reached.
2. Wearing safety glasses, pull out on the safety valve ring
to release pressure from the tank.
3. The safety valve should close automatically at
approximately at 40-50 PSI. If the safety valve does not
allow air to be released when you pull out on the ring, or
does not close automatically, it must be replaced.
Items to Check/Change
Check Tank Safety Valve
Overall Unit Visual Check
Drain Tank
Check Power Cord for Damage
To ensure efficient operation and longer life of the air
compressor unit, a routine maintenance schedule should
be followed. The following schedule is geared toward a
consumer whose compressor is used in a normal working
environment on a daily basis.
This compressor is equipped with an automatic reset
thermal overload protector which will shut off motor if it
becomes overheated. If the thermal overload protector is
actuated, the motor must be allowed to cool down before
start-up is possible.
Before each use
or daily
X
X
X
X
Storage
For storing the air compressor, be sure to do the following:
1. Turn the unit off and unplug the power cord from the
receptacle.
2. Remove all air hoses, accessories, and air tools from
the air compressor.
3. Perform the daily maintenance schedule.
NOTE: The motor will automatically restart without warn-
ing ifthe unit is left plugged in to an outlet with the Auto-
On/Off switch in the on position
4. Open the drain valve to bleed all air from the tank.
5. Close the drain valve.
6. Store the air compressor in a clean and dry location.
Troubleshooting Guide
The air compressor should be turned off and unplugged from the power source before any
maintenance is performed as well as the air bled from the tank and the unit allowed time to cool.
Personal injuries could occur from moving parts, electrical sources, compressed air, or hot surfaces.
PROBLEM POSSIBLE CORRECTION
Air leaks at the check valve or at the pres- A defective check valve results in a constant air leak at the pressure relief valve
sure relief valve, when there is pressure in the tank and the compressor is shut off. Drain the tank,
then remove and clean or replace the check valve.
Air leaks between head and cylinder. Be sure of proper torque on head bolts, tf leak remains, contact a service techni-
Air leak from safety valve. Operate the safety valve manually by pulling on the ring. tf the valve continues to
Pressure reading on the regulated
drops when an accessorypressure gauge
cian.
leak when in the closed position, it should be replaced.
tf there is an excessive amount of pressure drop when the accessory is used,
replace the regulator.
is used.
Adjust the regulated pressure under flow conditions (while accessory is being
used), tt is normal for the gauge to show minimal pressure loss during initial use
of the tool.
Excessive tank pressure.
Motor will not start.
Move the Auto-On/Off switch to the Off position. If the unit doesn't shut off,
unplug it from the power source and contact a service technician.
Make sure power cord is plugged in and the switch is on. Inspect for the proper
size fuse in your circuit box. If the fuse was tripped, reset it and restart the unit. If
repeated tripping occurs, replace the check valve or contact a service technician.
Make sure the Thermal Overload Switch has not tripped. The motor has
a built in thermal cut out that trips when necessary to protect the motor
from damage when overheated.
To reset the motor overload toggle/turn the pressure switch Auto/Off lever to
the Off position and unplug the unit from the power outlet. Allow 10 minutes
(minimum) for motor overload cut-out to cool and reset. Unit can then be plugged
in and re-started.
Thermal overload protector cuts
out repeatedly.
Excessive moisture in the discharge air.
Air leaks from the tank body or tank welds.
1. Lack of ventilation, room temperature too high. Move to cooler
environment.
2. Excessive air usage, compressor too small for this application. Lower rate of
consumption.
Remove the water in the tank by draining after each use. High humidity
environments will cause excessive condensation. Utilize water filters on your air
line.
Water condensation is not caused by compressor malfunction. Be sure the
compressor's air output is greater than your tool's air consumption rate.
Never drill into, weld or otherwise modify the air tank or it will weaken. The tank
can rupture or explode. Compressor cannot be repaired. Discontinue use of the
air compressor.
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