Craftsman 919162121 Owner’s Manual
SEARS
OWNER'S
MANUAL
CRRFTSMRNo
PERMANENTLY LUBRICATED
TANK MOUNTED
IMPORTANT:
Read the Safety Guidelines and
All Instructions Carefully Before
Operating.
AIR COMPRESSOR
• SAFETY GUIDELINES
• ASSEMBLY
• OPERATION
• MAINTENANCE
• TROUBLESHOOTING
• REPAIR PARTS
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.
MG-UMCTAN 12/29/99
TABLE OF CONTENTS
Page
SAFETYGUIDELINES ...................................................................................................................... 3
WARNING CHART ........................................................................................................................... 3
GLOSSARY ..................................................................................................................................... 5
ACCESSORIES FOR USEWITH SEARSAIR COMPRESSORS ......................................................... 5
GENERAL INFORMATION ............................................................................................................... 5
DESCRIPTION OFOPERATION ....................................................................................................... 6
ASSEMBLY ..................................................................................................................................... 7
INSTALLATION AND BREAK-IN PROCEDURES ............................................................................... 7
Location ofAir Compressor ...................................................................................................... 7
Lubrication and Oil ................................................................................................................... 7
Extension Cords ....................................................................................................................... 7
Voltageand Circuit Protection ................................................................................................... 7
Grounding Instructions .............................................................................................................. 8
Break-in Procedure ................................................................................................................... 8
OPERATING PROCEDURES ........................................................................................................... 9
MAINTENANCE ............................................................................................................................. 10
Check Valve -Replacement .................................................................................................... 10
Safety Valve - Inspection ........................................................................................................ 10
Storage ................................................................................................................................... 10
TROUBLESHOOTING GUIDE ........................................................................................................ 11
HOWTOORDER REPAIR PARTS ................................................................................................. 14
WARRANTY .................................................................................................................................. 14
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 informa-
tion, we use symbols to the right.
Please read the manual and pay
attention to these sections.
I _" DANGER I
URGENT SAFETY INFORMATION - A HAZARD
THAT WILL CAUSE SERIOUS INJURY OR LOSS
OF LIFE.
I _&WARNING I
IMPORTANT SAFETY INFORMATION - A
HAZARD THAT MIGHT CAUSE SERIOUS
INJURY OR LOSS OF LIFE.
Information for preventing damage to
equipment.
Information that you should pay special
attention to.
I ,&.CAUTION I
I NOTE I
IMPORTANT SAFETY INSTRUCTIONS
• SAVETHESE INSTRUCTIONS •
IMPROPER OPERATION OR MAINTENANCE OF THIS PRODUCT COULD RESULT IN SERIOUS
INJURY AND PROPERTY DAMAGE. READ AND UNDERSTAND ALL WARNINGS AND OPERATING
INSTRUCTIONS BEFORE USING THIS EQUIPMENT.
HAZARD HOW TO PREVENT IT
Air Tank
• THE FOLLOWING CONDITIONS COULD
RISK OF BURSTING
WHAT CAN HAPPEN
lead to a weakening of the tank, and
RESULT IN A VIOLENT TANK
EXPLOSION:
1. FAILURE TO PROPERLY DRAIN
condensed WATER FROM THE
TANK, causing rust and thinning of
the tank steel.
DRAIN TANK DAILY OR AFTER EACH
USE. If tank develops a leak, replace it
immediately with anew tankor new
compressor outfit.
RISK OF ELECTRIC
SHOCK
2. MODIFICATIONS or attem pted
repairs TO THE TANK.
3. Unauthorized MODIFICATIONS
TO THE PRESSURE SWITCH,
SAFETY VALVE, OR any OTHER
COMPONENTS WHICH
CONTROL tankPRESSURE.
Attachments and Accessories
• EXCEEDING THE PRESSURE RATINGOF
AIR TOOLS, spray guns, air operated
accessories, tires AND other INFLATABLES
CAN CAUSE THEM TO EXPLODE or fly
apart, and could result inserious injury.
Your AIR COMPRESSOR is powered by
electricity. Like any other electrically
powered device, IF it is NOT USED
PROPERLY it MAY CAUSE ELECTRICAL
SHOCK.
ELECTRICAL GROUNDING: FAILURE TO
PROVIDE ADEQUATE GROUND-ING TO
THIS PRODUCT COULD RESULT IN
SERIOUS INJURY OR DEATH FROM
ELECTROCUTION. SEE GROUNDING
INSTRUCTIONS IF APPLICABLE.
• NEVER drill into, weld, or MAKE ANY
MODIFICATIONS TO THE TANK or its
attachments. Never attempt to repair a
damaged or leaking tank. Replace with a
new tank.
• The tank is designed to withstand specific
operating pressures. NEVER MAKE
ADJUSTMENTS OR PARTS
SUBSTITUTIONS TO alter the FACTORY
SEToperating PRESSURES.
• Follow the equipment manufacturers
recommendation and never exceed the
maximum allowable pressure rating of
attachments. NEVER USE THE
COMPRESSOR TO INFLATE SMALL
LOW-PRESSURE OBJECTS SUCH AS
CHILDREN'S TOYS, FOOTBALLS,
BASKETBALLS, ETC.
Any ELECTRICAL WIRING OR REPAIRS
required to this product SHOULD BE
PERFORMED BY QUALIFIED SERVICE
PERSONNEL OR a LICENSED
ELECTRICIAN, 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.
Never operate the compressor outdoors
when it is raining.
HAZARD WHAT CAN HAPPEN HOW TO PREVENTIT
RISK OF
ELECTRICAL SHOCK
(cont'd)
RISK FROM
FLYING OBJECTS
RISK TO BREATHING
REPAIRS ATTEMPTED BY UNQUALIFIED PER-
SONNEL CAN RESULT IN SERIOUS INJURY OR
DEATH BY ELECTROCUTION.
ELECTRICAL GROUNDING: FAILURE TO
PROVIDE ADEQUATE GROUNDING TO THIS
PRODUCT COULD RESULT IN SERIOUS
INJURY OR DEATH FROM ELECTROCUTION.
SEE GROUNDING INSTRUCTIONS.
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 PER-
SONAL INJURY.
THE COMPRESSED AIR FROM YOUR COM-
PRESSOR IS NOT SAFE FOR BREATHING! THE
AIR STREAM MAY CONTAIN CARBON MONOX-
IDE, TOXIC VAPORS OR SOLID PARTICLES.
SPRAYED MATERIALS SUCH AS PAINT, PAINT
SOLVENTS, PAINT REMOVER, INSECTICIDES,
WEED KILLERS, ETC.. CONTAIN HARMFUL
VAPORS AND POISONS.
ANY ELECTRICAL WIRING OR REPAIRS RE-
QUIRED ON THIS PRODUCT SHOULD BE
PERFORMED BY AUTHORIZED SERVICE CEN-
TER 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 AD-
EQUATE FUSE PROTECTION.
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.
NEVER INHALE AIR FROM THE COMPRESSOR
EITHER DIRECTLY OR FROM A BREATHING
DEVICE CONNECTED TO THE COMPRESSOR.
WORK IN AN AREA WITH GOOD CROSS-
VENTILATION. READ AND FOLLOW THE SAFETY
INSTRUCTIONS PROVIDED ON THE LABEL OR
SAFETY DATA SHEETS FOR THE MATERIAL
YOU ARE SPRAYING. USE A NIOSH/MSHA
APPROVED RESPIRATOR DESIGNED FOR USE
WITH YOUR SPECIFIC APPLICATION.
RISK
OF FALLING
RISK FROM
MOVING PARTS
RISK OF BURNS
A PORTABLE COMPRESSOR CAN FALL FROM
A TABLE, WORKBENCH OR ROOF CAUSING
DAMAGE TO THE COMPRESSOR WHICH
COULD RESULT IN SERIOUS INJURY.
THE COMPRESSOR CYCLES AUTOMATICALLY
WHEN THE PRESSURE SWITCH IS IN THE ON/
AUTO POSITION.
MOVING PARTS CAN CAUSE SERIOUS INJURY
OR DAMAGE IF THEY COME INTO CONTACT
WITH YOU OR YOUR CLOTHING.
ATTEMPTING TO OPERATE OR REPAIR
COMPRESSOR WITH PROTECTIVE SHROUDS
REMOVED CAN EXPOSE YOU TO MOVING
PARTS AND ELECTRICAL SHOCK.
TOUCHING EXPOSED METAL SUCH AS THE
COMPRESSOR HEAD OR OUTLET TUBE CAN
RESULT IN SERIOUS BURNS.
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.
ALWAYS TURN OFF THE COMPRESSOR, BLEED
AND UNPLUG FROM ELECTRICAL OUTLET
BEFORE PERFORMING MAINTENANCE OR
ATTACHING TOOLS AND ACCESSORIES.
DO NOT REMOVE THE PROTECTIVE COVERS
FROM THIS PRODUCT. NEVER OPERATE THE
COMPRESSOR WITH GUARDS OR COVERS
WHICH ARE DAMAGED OR REMOVED.
ANY REPAIRS REQUIRED ON THIS PRODUCT
SHOULD BE PERFORMED BY AUTHORIZED
SERVICE CENTER PERSONNEL.
NEVER TOUCH ANY EXPOSED METAL PARTS
ON COMPRESSOR DURING OR IMMEDIATELY
Ah ItcH UIJtcHA I IUN. COM pHI-S_5OH WILL
REMAIN HOT FOR SEVERAL MINUTES AFTER
OPERATION.
GLOSSARY
CFM: Cubic feet per minute.
SCFM: Standard cubic feet per minute; a unit of measure
of air delivery.
PSlG: Pounds per square inch gauge; a unit of measure
of pressure.
ASME: American Society of Mechanical Engineers; made,
tested, inspected and registered to meet the standards of
theASME.
U.L. Listed: This product is Listed by Underwriters
Laboratories, Inc. (UL). Samples of this product have been
evaluated by UL and meet applicable UL Standards for
Safety.
ACCESSORIES FOR USE WITH SEARS
AIR COMPRESSORS
Cut-In Pressure: Whilethe motor is off, airtank 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 re-starts is called "cut-in pressure."
Cut-Out Pressure: When you turn on your air compressor
and it begins to run, air pressure in the air tank begins to
build. It builds to acertain 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."
•SPRAYGUNS
•BLOWGUNS
•AIRCAULKING GUNS
•AIRBRUSHES
•AIR LINE FILTERS
•TIREAIR CHUCKS
•PAlNTTAN KS
oAIRTANKS
•INFLATOR KITS
oQUICK CONNECTOR SETS
(various sizes)
GENERAL INFORMATION
You have purchased an air compressor unit consisting of
a one cylinder, single-stage air compressor pump and air
tank. Included are wheels, regulator, gauges, and handle.
This air compressor requires no oil. Now you can enjoy all
the benefits of having an air compressor without ever
having to purchase, add or change oil.
Your air compressor can be used for operating paint spray
guns, air tools, air brushes, or inflating tires and plastic
•AIR PRESSURE REGULATORS
•OIL FOG LUBRICATORS
oAIR TOOLS:
Drills - Intermittent Use
Impact Wrenches - Intermittent
Use
•AIR HOSE:
1/4", 5/16" or 3/8" I.D.
in various lengths
•NAILER/STAPLERS
•DRAIN CLEANER
toys, spraying weed killers, insecticides, etc. An air
pressure regulator is required for most of the applications.
An air filter which removes moisture and dirt from com-
pressed air should be used where applicable.
These accessories can be purchased from most Sears
stores or from the Sears Power Tool Catalog.
DESCRIPTION OF OPERATION
Air Compressor Pump: To compress air, the piston
moves up and down in the cylinder. On the downstroke,
air is drawn in through the air intake valves. The exhaust
valves remain closed. On the upstroke of the piston, air
is compressed. The intake valves close and compressed
air is forced out through the exhaust valves, through the
outlet tube, through the check valve and into the air tank.
Working air isnot 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.
Pressure Release Valve: The pressure release valve
located on the side of the pressure switch, is designed to
automatically release compressed air from the compres-
sor head and the outlet tube when the air compressor
reaches "cut-out" pressure or is shut off. If the air is not
released, the motor will not be able to start. The pressure
release valve allows the motor to restart freely. When the
motor stops running, air will be heard escaping from the
valvefor afewseconds. Noairshould beleakingwhenthe
motor is running.
SafetyValve: Ifthe pressure switch does not shut offthe
air compressor at its cut-out pressure setting, the safety
valve will protect the tank against high pressure by
"popping out" at its factory set pressure (slightly higher
than the pressure switch cut-out setting).
Regulator: The air pressure coming from the air tank is
controlled bythe regulator. Turn the regulator knob clock-
wise to increase pressure and counter-clockwise to de-
crease pressure. To avoid minor readjustment after
making achange in pressure setting, always approach the
desired pressure from a lower pressure. When reducing
from a higher to a lower setting, first reduce to some
pressure less than that desired, then bring up to the
desired pressure. Depending on the air requirements of
each particular accessory, the outlet regulated air pres-
sure may have to be adjusted while operating the acces-
sory.
Outlet Pressure Gauge: The outlet pressure gauge
indicates the air pressure available at the outlet side ofthe
regulator. This pressure iscontrolled by the regulator and
is always less or equal to the tank pressure. See
"Operating Procedures".
Pressure Switch: The pressure switch automatically
starts the motor when the air tank pressure drops below
the factoryset"cut-in" pressure. Itstopsthe motor when
the air tank pressure reaches the factory set "cut-out"
pressure.
Tank Pressure Gauge: The tank pressure gauge indi-
cates the reserve air pressure in the tank.
Cooling System: 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.
TOOLS NEEDED FOR ASSEMBLY
• a 9/16" socket or open end wrench for attaching the • a 3/8" open end wrench or socket to tighten handle
wheels screws
Installing Wheels, Handles, Molded
Foot Bumpers
THE WHEELS AND HANDLE DO NOT PRO-
VIDE ADEQUATE CLEARANCE, STABILITY
OR SUPPORT FOR PULLING THE UNIT UP
AND DOWN STAIRS OR STEPS. THE UNIT
MUST BE LIFTED, OR PUSHED UP A RAMP.
ASSEMBLY
It will be necessary to brace or support
one side of the outfit when installing the
wheels because the corn pressor will have
a tendency to tip over.
2. Install one shoulder bolt and one nut for each wheel.
Tighten securely. The outfit will sit level if the wheels
are properly installed.
1.
Attach the handletothe compressor saddle by insert-
ingthe handle insidethecompressor saddleand lining
up the bolt holes on each side. Install thetwo screws,
one on each side. Tighten securely.
INSTALLATION AND BREAK-IN PROCEDURES
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 aircom pressor pumpand
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.
Lubrication and Oil
3.
Clean and dry underside of air tank leg opposite
wheels. Remove the protective strip from the adhe-
sive backed molded foot bumpers. Attach the foot
bumpers to the bottom of leg on each end. Press
firmly into place.
If an extension cord must be used, be sure it is:
• a3-wire extension cord that has a 3-blade grounding
plug, and a 3-slot receptacle that will accept the plug
on the product
• ingood 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.)
This unit needs no lubrication or oiling.
Extension Cords
Use extra air hose instead of an extension cord to avoid
voltage drop and power loss to the motor, and to prevent
overheating.
Voltage and Circuit Protection
Refer to your Parts List Manual for the voltage and circuit
protection requirements of your compressor. Use only a
fuse or circuit breaker that is the same rating as the branch
circuit theair compressor isoperated on. Ifthecompressor
isconnected to
a circuit protected by fuses, use only dual element time
delay fuses, as noted inthat Service Bulletin.
RefertoPartsListManualforyourcompressor.Certainair
compressormodelscanbeoperatedona15ampcircuit
if:
1. Voltagesupplytocircuitisnormal.
Ifrepairing cord or plug, the grounding wire must be kept
separate from the current-carrying wires. Never connect
the grounding wire to a flat blade plug terminal. The
grounding wire has insulation with an outer surface that is
green - with or without yellow stripes.
2. Circuitisnotusedtosupplyanyotherelectricalneeds
(lights,appliances,etc.).
3. Extensioncordscomplywithspecifications.
4. Circuitisequippedwitha15ampcircuitbreakeror15
amptimedelayfuse.
Ifanyoftheaboveconditionscannotbemet,orifoperation
ofthecompressorrepeatedlycausesinterruptionofthe
power,it maybenecessarytooperateitfroma 20amp
circuit.Itisnotnecessaryto changethecordset.
GROUNDING INSTRUCTIONS
RISK OR 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 com-
pressor must be properly grounded.
Ifthese grounding instructions are not completely under-
stood, or if in doubt as to whether the compressor is
properly ground-ed, have the installation checked by a
qualified electrician.
White
Ground
15 AMP Plug
Grounded
Outlet
Outlet
@
/
Grounding
Pin
Break-in Procedure
The portable air compressor is equipped with a cord
having
agrounding wire with an appropriate grounding plug. The
plug must be used with an outlet that has been installed
and
grounded in accordance with all local codes and ordi-
nances.
The outlet must have the same configuration as the plug.
IMPROPER GROUNDING CAN RESULT IN
ELECTRICAL SHOCK.
Do not modify the plug that has been
provided. If it does not fit the available
outlet, the correct outlet should be in-
stalled by a qualified electrican.
Serious damage may result if the following
break-in instructions are not closely followed.
This procedure is required only once, before the air
compressor is put into service.
1. Set the pressure switch OFF/AUTO lever in the
"OFF" position.
2. Plug the power cord into the correct branch circuit
receptacle.
3. Turn the regulator clockwise, opening it fully, to
prevent air pressure build-up in the tank.
4. Move the OFF/AUTO lever to "AUTO". The com-
pressor will start.
5. Run the compressor for 15 minutes. Make sure the
regulator is open and there is no tank pressure build-
up.
6. After 15 minutes, close the regulator by turning it
counterclockwise. The air tank will fill to cut-out
pressure and then the motor will stop.
Refer to "Operating Procedures".
OPERATING PROCEDURES
Before attaching air hose or accessories, make sure
the OFF/AUTO lever is set to "OFF" and the air
regulator is closed.
6. Always operate the air compressor in well-ventilated
areas; free of gasoline or other solvent vapors.
2. Attach hose and accessories.
TOO MUCH AIR PRESSURE CREATES A
HAZARDOUS RISK OF BURSTING. CARE-
FULLY FOLLOW STEPS 3 AND 5 EACH TIME
THE COMPRESSOR IS USED.
Compressed air from the outfit may contain
water condensation. Do not spray unfiltered air
at an item that could be damaged. Some air
operated tools or devices may require filtered
air. Read the instructions for the air tool or
device.
3. Check the manufacturer's maximum pressure rating
for air tools and accessories. The regulator
outlet pressure must never exceed the maxi-
mum pressure rating. If your
compressor is not supplied with a regulator with
gauge, install one before using accessories.
4. Turn the OFF/AUTO lever to "AUTO" and allow tank
pressureto build. Motor will stop when tank pressure
reaches "cut-out" pressure.
Do not operate the compressor near the spray area.
When you are finished:
7. Set the "OFF/AUTO" lever to "OFF".
8. Turn the regulator counterclockwise and set the
outlet pressure to zero.
9. Remove the air tool or accessory.
10. Open the regulator and allow the air to slowly bleed
from the tank. Close the regulator when tank pres-
sure is approximately 20 psi.
11. Drain water from air tank.
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.
With tank pressu reat approximately 20 psi, open the drain
cock or drain valve.
NOTE:
Ifdrain cock valve is plugged, release all air
pressure. The valve can then be removed,
cleaned,then reinstalled.
5. Opentheregulatorbyturningitclockwise. Adjustthe
regulator to the correct pressure setting. Your com-
pressor is ready for use.
12. After the water has been drained, close drain cock
or drain valve. The air compressor can now be
stored.
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