Craftsman 921164780 Owner’s Manual
Owner's Manual
CRRFTSl4Rli°
AiR COMPRESSOR
4-gallon
1HP
Direct-Drive, Oil-Lubricated
Model No. 921.164780
CAUTION"
Before using this product,
read this manual and follow
all its Safety Rules and
Operating Instructions.
Sears Brands Management Corporation, Hoffman Estates, IL 60179 U.S.A.
www.sears.com/craffsman
11/03/2011
Part No. 101-3368
• Safety Instructions
• Installation & Operation
• Maintenance & Storage
• Troubleshooting Guide
• Parts List
• Espa_ol, p. 11
Table of Contents
Page
Warranty ..............................................................
Safety Symbols .......................................................... 1
Important Safety Instructions & Guidelines ..................................... 1
Specifications ............................................................ 2
Glossary ................................................................ 2
Duty Cycle .............................................................. 2
Parts & Features ......................................................... 3
Installation & Assembly .................................................... 4
Operating Procedures ..................................................... 5
See Below
Maintenance ............................................................. 6
Storage ................................................................ 6
Troubleshooting Guide ..................................................... 7
Exploded View ........................................................... 8
Parts List ............................................................... 9
Espadol ................................................................ 10
CRAFTSMAN ONE YEAR FULL WARRANTY
FOR ONE YEAR from the date of purchase, this product is warranted against any defects in material or workmanship. A
defective product will receive free repair or replacement if repair is unavailable.
For warranty coverage details to receive free repair or replacement, visit the web site: www.craftsman.com
This warranty is void if this product is ever used while providing commercial services or if rented to another person.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
Sears Brands 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 12gauge 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
_:74o,._,hm!_.,2.,.
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 filter.
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-lube, direct=drive
Motor ............................ 1.0 HP (Induction)
Bore ....................................... 1.65"
Stroke ...................................... 1.26"
Voltage Single Phase ....................... 120 VAC
Minimum Circuit Requirement ................ 15 Amps
Glossary
CFM: Cubic feet per minute.
SCFM: Standard cubic feet per minute; a unit of measure
for air delivery.
PSlG: 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.
Duty Cycle
Air Tank Capacity ......................... 4 Gallons
Cut-in Pressure ............................. 95 PSI
Cut-out Pressure ........................... 125 PSI
SCFM @ 90 PSI................................ 2.4
Oil Capacity ......................... 90 mL or 3 oz.
Oil Type ........................ SAE 30 Non-detergent
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.
This is a 50% duty cycle air compressor.
could damage the air compressor.
Do not run the air compressor more than 30 minutes of one hour. Doing so
Parts & Features
See figures below for reference.
Quick Connect
Offers a quick release feature for
attaching and removing the air hose.
The air pressure coming from the air tank is controlled by the
regulator. To increase the pressure turn the knob clockwise and to
Regulator 1
decrease the pressure turn the knob counterclockwise.
Indicates the outgoing air pressure I
'_ Regulator Gauge "]
to the tool and is controlled by |
the regulator.
Pressure Relief Tube
Pressure Relief Valve "/
The pressure relief valve located on the side of the pressure|
J
switch, is designed to automatically release compressed air l
when the air compressor reaches cut-out pressure. The |
released air should only escape momentarily and the valve |
should then close.
Pressure Switch
This controls the power to the motor and also the cut-in/
cut-out pressure settings. This switch serves as the
AutolOff positions for the unit.
Tank Pressure Gauge
Indicates the reserve air pressure in the tank.
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.
/
J
When the pump is not in operation the valve closes to retain air
I Check Valve 1
pressure inside the tank. An internal component.
Tank Safety Valve
Used to allow excess tank pressure to escape
into the atmosphere. This valve should only
open when the tank pressure is above the
maximum rated pressure.
Oil Fill Cap
Oil Sight Gauge
Outlet Tube
Tank Drain Valve
Used to drain condensation from the air tank.
Located at bottom of 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 instruction.
Assembly
1. Remove air compressor, handle assembly, hardware,
oil bottle, intake filter, manual and accessories from
the styrofoam.
2. Remove the plastic plug from the compressor intake
port. (see diagram below)
3. Install the filter in the compressor intake port.
(see diagram below)
4. Remove the oil fill cap from the crankcase and fill until
the oil reaches the top of the red dot in the sight glass.
Oil capacity is 3 oz. (seebelow)Use SAE-30 non-deter
gent (API CG/CD heavy duty motor oil). Under extreme
cold weather conditions, 32° F (0°C) or below, use
SAE-10 weight oil.
5. Replace the oil cap.
Grounded
Outlet
Grounding Pin
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.
This product is for use on a circuit having a nominal rating
of 120 volts and is factory-equipped with a specific 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.
Estimated Assembly Time: Approximately 2 minutes
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.
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 at
top right corner.) The plug must be plugged into an outlet
that is properly installed and 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.
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 is factory tested to ensure proper operation and
performance.
Operating Procedures
Daily Start-Up Procedures
1. Set the Auto/Off lever to the Off position.
2. inspectthe 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 service dealer
before use.
3. Close the drain valve.
4. Check the oil level of the pump.
5. 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.
6. Plug the power cord into the proper receptacle.
7. Turn the Auto/Off lever to the Auto position and the
compressor will start and build air pressure in the
tank to cut-out pressure and then shut off automatically.
8. 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.
9. 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, rubber-tapered nozzle, inflation
needles, adapter, and blow gun adapter.
®
Daily Shut-Down Procedures
1. Set the Auto/Off lever 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. When draining
the tank, always use ear and eye protection. Drain the
tank in a suitable location; condensation will be present
in most cases of draining.
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 inthe valve.
When draining the tank, always use ear and eye protection.
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.
CLOSED _ OPEN
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
performed.
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.
Do not attempt to remove or adjust the safety valve.
items to Check/Change
Check Tank Safety Valve
Overall Unit Visual Check
Check Air Filter
Drain Tank
iCheck Power Cord for Damage
Change Oil
iCheck Oil Level
NOTE: The motor will automatically restart without
warning if the unit is left plugged in to an outlet with the
Auto/Off switch in the on position.
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.
Before each use
or daily
X
X
X
X
X
after first 50 hours
after every 100 hours
X
From time to time, the air filter needs to be removed and
cleaned.
1. Turn the air compressor off.
2. Unplug the air compressor.
3. Turn the air filter cover counterclockwise to remove.
4. Remove air filter from air filter housing.
5. Blow compressed air through the air filter for
10-15 seconds.
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.
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.
For more details, see Troubleshooting Guide (page 7).
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.
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