Craftsman 919.728000, D21245 User Manual
CRAFTSMAN
Model No.
OWNERS MANUAL FOR
CRAFTSMAN
TANK MOUNTED
919.728000
IMPORTANT:
Read the Safety Guidelines
and All Instructions Carefully
Before Operating
AIR COMPRESSOR
SAFETY GUIDELINES
ASSEMBLY
OPERATION
MAINTENANCE
TROUBLESHOOTING
REPAIR PARTS
Record in the spaces provided.
(1) The Model Number can be found on the
maintenance label on top of the motor
shroud or on the bar code label on the
rear of air tank.
(2) The Date Code Number can be found on
the bar code label on the rear of the air
tank.
(3) The Serial Number can be found on the
bar code label on the rear of the tank.
(4) The Tank Registration Number is located
on the metal data plate which is welded
onto the backside of the air tank. (This
data plate is painted the same color as the
tank.)
Retain these numbers for future reference.
Model No________________________
Serial No________________________
Date Code_______________________
Tank Registration No______________
D21245 Rev. 4 7/18/01
Sold by Sears Canada, Inc., Toronto, Ont. M5B 2B8
TABLE OF CONTENTS
WARRANTY ......................................................... 2
SAFETY GUIDELINES ......................................... 2
WARNING CHART ............................................ 3-5
GENERAL INFORMATION ................................... 6
GLOSSARY .......................................................... 6
SPECIFICATION CHART ..................................... 7
DESCRIPTION OF OPERATION .......................... 7
TOOLS NEEDED FOR ASSEMBLY ...................... 7
ASSEMBLY .......................................................... 8
BREAK-IN PROCEDURES ................................... 8
Location of Air Compressor ............................ 8
Lubrication and Oil ......................................... 8
Grounding Instructions .................................... 8
Voltage and Circuit Protection ......................... 9
Extension Cords ............................................. 10
Piping ............................................................. 10
Additional Regulators and Controls ................. 10
Break-in Procedure ......................................... 10
OPERATING PROCEDURES ............................... 11
FULL ONE YEAR WARRANTY ON AIR COMPRESSORS
MAINTENANCE ........................................................... 12
Air Filter - Inspection and Replacement .................. 12
Check Valve -Replacement .................................... 12
Safety Valve - Inspection ........................................ 12
Belt-Replacement................................................... 13
Belt Guard - Removal and Installation ................... 13
Adjust Belt Tension ................................................. 13
Pressure Switch - Replacement ............................. 13
Motor Overload Protector - Reset ........................... 13
Pulley and Flywheel - Alignment ............................. 13
Servicing Intake and Exhaust Valves ...................... 13
Storage ................................................................... 14
TROUBLESHOOTING GUIDE ................................ 14-16
AIR COMPRESSOR DIAGRAM ................................... 18
PARTS LIST ................................................................. 19
COMPRESSOR PUMP DIAGRAM .............................. 20
PARTS LIST ................................................................. 21
HOW TO ORDER REPAIR PARTS ................ Back Cover
If this air compressor fails due to a defect in material or workmanship within one year from the date
of purchase, RETURN IT TO THE NEAREST SEARS SERVICE CENTER THROUGHOUT CANADA AND
SEARS WILL REPAIR IT, FREE OF CHARGE.
If this air compressor is used for commercial or rental purposes, the warranty will apply for ninety
days (90) from the date of purchase.
This Craftsman Air Compressor warranty gives you specific legal rights and you may have other
rights which vary from province to province.
Sears Canada, Inc., Toronto, Ont. M5B 2B8
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
to the right. Please read the manual and pay attention to these sections.
DANGER indicates an imminently hazardous situation which, if
not avoided, will result in death or serious injury.
CAUTION indicates a potentially hazardous situation which, if
not avoided, may result in minor or moderate injury.
WARNING indicates a potentially hazardous situation which, if
not avoided, could result in death of serious injury.
D21245
CAUTION used without the safety alert symbol indicates a
potentially hazardous situation which, if not avoided, may result
in property damage.
2 — ENG
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 OPERATING INSTRUCTIONS BEFORE USING THIS EQUIPMENT.
HAZARD
RISK OF EXPLOSION OR FIRE
WHAT CAN 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.
RISK OF BURSTING
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 OBSTRUC-
TION THAT WOULD RESTRICT THE FLOW OF FRESH AIR TO
THE VENTILATION OPENINGS.
OPERATE COMPRESSOR IN A CLEAN, DRY, WELL VENTI-
LATED AREA. DO NOT OPERATE UNIT INDOORS OR IN ANY
CONFINED AREA.
ALWAYS REMAIN IN ATTENDANCE WITH THE PRODUCT
WHEN IT IS OPERATING.
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 CAN HAPPEN
1. FAILURE TO PROPERLY DRAIN CONDENSED WATER
FROM THE TANK, CAUSING RUST AND THINNING OF THE
STEEL TANK.
2. MODIFICATIONS OR ATTEMPTED REPAIRS TO THE TANK.
3. UNAUTHORIZED MODIFICATIONS TO THE UNLOADER
VALVE, SAFETY VALVE, OR ANY OTHER COMPONENTS
WHICH CONTROL TANK PRESSURE.
4. 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.
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 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.
HOW TO PREVENT IT
3 — ENG
D21245
HAZARD
RISK FROM FLYING OBJECTS
WHAT CAN 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.
RISK TO BREATHING
WHAT CAN HAPPEN
THE COMPRESSED AIR FROM YOUR COMPRESSOR IS NOT
SAFE FOR BREATHING! THE AIR STREAM MAY CONTAIN
CARBON MONOXIDE, TOXIC VAPORS OR SOLID PARTICLES
FROM THE TANK.
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.
HOW TO PREVENT IT
ALWAYS OPERATE AIR COMPRESSOR OUTSIDE IN A CLEAN,
WELL VENTILATED AREA. AVOID ENCLOSED AREAS SUCH AS
GARAGES, BASEMENTS, STORAGE SHEDS, WHICH LACK A
STEADY EXCHANGE OF AIR. KEEP CHILDREN, PETS AND
OTHERS AWAY FROM AREA OF OPERATION.
NEVER INHALE AIR FROM THE COMPRESSOR EITHER
DIRECTLY OR FROM A BREATHING DEVICE CONNECTED TO
THE COMPRESSOR.
SPRAYED MATERIALS SUCH AS PAINT, PAINT SOLVENTS,
PAINT REMOVER, INSECTICIDES, WEED KILLERS, CONTAIN
HARMFUL VAPORS AND POISONS.
RISK OF ELECTRICAL SHOCK
WHAT CAN 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 GROUND-
ING INSTRUCTIONS.
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.
HOW TO PREVENT IT
NEVER OPERATE THE COMPRESSOR OUTDOORS WHEN IT IS
RAINING OR IN WET CONDITIONS.
NEVER OPERATE COMPRESSOR WITH COVER COMPONENTS
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.
D21245
4 — ENG
HAZARD
RISK FROM MOVING PARTS
WHAT CAN 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 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.
RISK OF BURNS
WHAT CAN HAPPEN
TOUCHING EXPOSED METAL SUCH AS THE COMPRESSOR
HEAD OR OUTLET TUBES, CAN RESULT IN SERIOUS BURNS.
HOW TO PREVENT IT
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.
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.
RISK OF FALLING
WHAT CAN HAPPEN
A PORTABLE COMPRESSOR CAN FALL FROM A TABLE,
WORKBENCH OR ROOF CAUSING DAMAGE TO THE COM-
PRESSOR AND COULD RESULT IN SERIOUS INJURY OR
DEATH TO THE OPERATOR.
RISK OF PROPERTY DAMAGE WHEN TRANSPORTING
COMPRESSOR
(Fire, Inhalation, Damage to Vehicle Surfaces)
WHAT CAN 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.
HOW TO PREVENT IT
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.
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.
ESW-99 9/26/99
5 — ENG
D21245
GENERAL INFORMATION
You have purchased an air compressor unit consisting
of an aluminum 2 cylinder, single-stage air compressor
pump (with cast iron sleeves), an air tank, wheels,
handle, associated controls and instruments.
Your air compressor can be used for operating paint
spray guns, air tools, caulking guns, grease guns, air
brushes, sandblasters, inflating tires and plastic toys,
spraying weed killers, insecticides, etc. An air pressure regulator is required for most of these applications.
GLOSSARY
CFM: Cubic Feet per Minute.
SCFM: Standard Cubic Feet per Minute; a unit of
measure of air delivery.
PSI: Pounds per Square Inch; a unit of measure of
pressure.
ASME: American Society of Mechanical Engineers;
made, tested, inspected and registered to meet the
standards of the ASME.
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
and the pressure switch lever is in "Auto", the motor
will restart automatically. The low pressure at which
the motor automatically restarts is called “cut-in
pressure.”
An air line filter is usually required for removal of
moisture and oil vapor in compressed air when a paint
spray gun is used.
An in-line lubricator is usually required for air tools to
prolong tool life.
Separate air transformers which combine the functions
of air regulation and/or moisture and dirt removal
should be used where applicable.
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 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.”
CSA: Electrical products sold in Canada are required
to be certified to the applicable CSA standard (s).
Canadian Standards Association (CSA) is a standards
writing and safety testing organization. Products that
are CSA certified have been evaluated and tested and
found to meet or exceed the applicable CSA standard
(s) for safety and electrical performance.
D21245
SPECIFICATION CHART
Model No.
Bore
Stroke
Voltage - Single Phase
Minimum Branch Circuit Requirement
Fuse Type
Amperage at Maximum Pressure
Air Tank/Capacity
Approximate Cut-in Pressure
Approximate Cut-out Pressure
SCFM @ 40 psi
SCFM @ 90 psi
6 — ENG
919.728000
2 3/8"
1.35"
120/240
15 amps
Time Delay
15.0
ASME/30 gal. (U.S.)
100
125
7.2
5.6
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.
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 Switch: The pressure switch is fitted with a
small lever. It is labeled "Auto/O" for automatic run or
off. In the "O" position, the motor will not run. In the "Auto"
position, it 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.
Pressure Release Valve: The pressure release valve located on the side of the pressure switch is designed to
automatically release compressed air trapped within the
compressor head and outlet tube. This short release of
air will occur when the air compressor reaches "cut-out"
pressure or the unit is shut off. If the air is not released,
the motor will not be able to start when next required.
Flow Valve: The flow valve allows air to flow from the
head as the motor is getting “up to speed”. Once the
motor reaches normal operating speed, the flow valve
closes and the pump begins to compress air, thus requiring less amp draw on initial start.
Regulator: The air pressure coming from the air tank is
controlled by the regulator. The regulator control knob is
a vibration proof design. Lift the regulator knob to engage and depress the knob to lock. Turn the regulator
knob clockwise to increase pressure and counter-clockwise to decrease pressure. To avoid minor readjustment
after making a change 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 pressure may have to be adjusted while operating the accessory.
Regulator 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. See “Operating Procedures”.
Tank Pressure Gauge: The tank pressure gauge indicates the reserve air pressure in the tank.
Air Intake Filter: This filter is designed to clean air coming
into the pump. This filter must always be clean and ventilation openings free from obstructions. See "Maintenance".
Drain Valve: This valve is located at the bottom of the
tank. To drain accumulated moisture from the tank, pull
on the safety valve until tank pressure is 15 PSI. Unscrew the drain valve and allow the water to drain.
Safety Valve: If the pressure switch does not shut off the
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).
TOOLS NEEDED FOR ASSEMBLY
• a 9/16" socket and an open end wrench for attaching
the wheels
7 — ENG
• a 3/8" open end wrench or socket to tighten handle
screws
D21245
ASSEMBLY
It may be necessary to brace or support one
end of the outfit when attaching the wheels
because the air compressor will have a
tendency to tip.
1. Remove the protective paper strip from the adhesive backed rubber foot strip. Attack the rubber foot
strip to the bottom of the air tank leg. Press firmly
into place.
2. The leg bracket on the underside of the air compressor tank has 2 holes on each side for mounting the
wheels. Place one shoulder bolt through the hole in
a wheel. On models with 10" wheels, push the bolt
through the TOP hole of the leg bracket. For models
with 8" wheels, push the bolt through the BOTTOM
hole of the leg bracket. Screw on one hex locking
nut. The special locking nut does not turn freely.
Tighten the nut firmly until it contacts the tank leg.
The outfit will sit level if the wheels are properly
installed.
NOTE
The side of the wheel, that the hub protrudes
out past the wheel edge, should be bolted to
the compressor leg.
3. Rotate each retaining clip clockwise and press
down until it snaps into place over the pull handle
(Fig. 4).
4. If the handle has excessive movement, it is improperly installed. Check the following.
A. Are both tabs inside the handle (Step #1)?
B. Does each clip pass through both the saddle
and handle (Step #2)?
FIG. 1
FIG. 2
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.
DO NOT LIFT THE UNIT BY THE MANIFOLD
ASSEMBLY. THE UNIT CAN BE DAMAGED.
Installing Handle
1. Insert the open end of the handle under the saddle
(Fig. 1). Before attaching handle, you may have to
pull the open ends of the handle apart so they fit
tightly against the side of the saddle. Looking in
from the open end of the saddle, position the handle
toward the two bent tabs, on the inside walls of the
saddle. Slowly push the open ends of the handle
onto both tabs at the same time (Fig. 2). Continue
pushing the handle into the saddle until the holes on
the side of the saddle and handle are in line.
2. Guide the straight end of each retaining clip through
the addle hole and both handle holes (Fig. 3).
FIG. 3
FIG. 4
D21245
8 — ENG
BREAK-IN PROCEDURES
Location of the Air Compressor
Operate the air compressor in a clean, dry and well
ventilated area. The fan bladed flywheel must be kept
clear of obstructions that could interfere with the flow of
air through the air intake filter. The pump crankcase and
head are designed with fins to provide proper cooling.
If humidity is high, an air filter can be installed on the air
outlet adapter to remove excessive moisture. Closely
follow the instructions packaged with the filter for proper
installation. It must be installed as close as possible to
the accessory.Do not place the air compressor where
heat is excessive.
When locating the compressor outside, make sure there
is a mimum of 12 inches on each side of the compressor. There must be fresh air flow for proper cooling.
NOT ALLOW THE COMPRESSOR TO GET WET.
DO
Lubrication and Oil
Compressors are shipped without oil. Do not
attempt to operate this air compressor
without first adding oil to the crankcase.
Serious damage can result from even limited
operation unless filled with oil and broken in
correctly. Make sure to closely follow initial
start-up procedures.
Place unit on a level surface. Remove oil fill plug and slowly
add a special compressor oil such as Sears 9-16426 or SAE
20-20W SF motor oil until it is even with the top of the oil fill
hole. (It must not be allowed to be lower than 3/8" -- 6
threads down -- from the top at any time.) When filling the
crankcase, the oil flows very slowly. If the oil is added too
quickly, it will overflow and appear to be full. Crankcase oil
capacity is 16 fluid ounces. Under winter-type conditions
use SAE 10W oil. Multi-viscosity oil, 10W 30, will leave
carbon deposits on critical components, reducing performance and compressor life. Replace oil fill plug.
NOTE
Drain and refill the compressor pump crankcase after the first 100 hours of operation.
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.
This portable air compressor is equipped with a cord
having a grounding 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 ordinances. The outlet must have the
same configuration as the plug. DO NOT USE AN
ADAPTER.
Inspect the plug and cord before each use. Do not use if
there are signs of damage.
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 installed by a qualified technician.
If repairing or replacing 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.
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.
Voltage and Circuit Protection
Refer to your Specification Chart (page 6) for voltage and
circuit protection requirements of your compressor. Use
only a fuse or circuit breaker that is the same rating as
the branch circuit the air compressor is operated on. If
the compressor is connected to a circuit protected by
fuses, use only dual element time delay fuses.
9 — ENG
D21245
Certain air compressors can be converted from
120V to 240V operation. When converting an
air compressor to 240V operation, the
attached three-prong 120V cord assembly
must be replaced with a three-pronged 240V
cord assembly that can be purchased through
a Sears Service Center.
Some models have a dual voltage motor, 120 and 240
volt. They are wired for 120 volt but can be converted
to 240 volt operation. Instructions for connecting the
motor for operation at 240 volt can be found printed on
the label attached to the side of the motor.
Certain air compressor models can be operated
on a 15 amp circuit if:
1. Voltage supply to circuit is normal.
2. Circuit is not used to supply any other electrical
needs (lights, appliances, etc.)
3. Extension cords comply with specifications in
this manual.
4. Circuit is equipped with a 15 amp circuit
breaker or 15 amp time delay fuse.
Extension Cords
To avoid voltage drop and power loss to the motor, and to
prevent overheating, use extra air hose instead of an
extension cord.
If an extension cord must be used:
• use only a 3-wire extension cord that has a 3blade grounding plug and a 3-slot receptacle that
will accept the plug on the extension cord.
• make sure the extension cord is in good condition.
• the extension cord should be no longer than 50
feet.
• the minimum wire size is 12 gauge (AWG). (Wire
size increases as gauge number decreases. 10
AWG and 8 AWG may also be used. DO NOT USE
14 AWG or 16 AWG.)
can gather and freeze. Apply pressure before underground lines are covered to make sure all pipe joints
are free of leaks.
Connect the piping to the 3/8" NPT air outlet opening
at the end of the air tank.
Additional Regulators and Controls
Since the air tank pressure is usually greater than that
which is needed, a separate regulator is employed to
control the air pressure ahead of any individual air
driven device.
Separate air transformers which combine the function
of air regulation, moisture and dirt removal should be
used where applicable.
Break-in Procedure
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 "AUTO/O" lever in the
"O" position for "Off".
2. Plug the power cord into the correct branch circuit
receptacle.
3. Do not attach hose to outlet. Leave the outlet open
to the atmosphere.
4. Turn the regulator
prevent air pressure build-up in the tank.
5. Move the "AUTO/O" lever to "AUTO". The compressor will start.
6. RUN THE COMPRESSOR FOR 30 MINUTES.
Make sure the regulator is open and there is no tank
pressure build-up.
7. After 30 minutes, close the regulator by turning it
counterclockwise
pressure and then the motor will stop.
clockwise
, opening it fully, to
. The air tank will fill to cut-out
Piping
Plastic or PVC pipe is not designed for use with
compressed air. Regardless of its indicated
pressure rating, plastic pipe can burst from air
pressure. Use only metal pipe for air distribution
lines.
If a pipe line is necessary, use pipe that is the same
size as the air tank outlet. Piping that is too small will
restrict the flow of air. If piping is over 100 feet long,
use the next larger size. Bury underground lines below
the frost line and avoid pockets where condensation
D21245
10 — ENG
OPERATING PROCEDURES
1. Before attaching air hose or accessories, make
sure the "AUTO/O" lever is set to “O” and the air
regulator is closed.
2. Make sure that nothing is blocking the belt guard
air openings or air filter inlet.
3. Pull the ring on all safety valve to make sure the
valve moves freely and smoothly.
4. Check the oil level; add oil if necessary.
5. Clean or blow off fins or any part of compressor
that collects dust and dirt. Compressor will run
cooler and provide longer service.
6. Before attaching an air hose or accessory make
sure the pressure switch lever is in the "OFF"
position. Close the air regulator outlet by turning it
counterclockwise.
7. Attach hose and accessories.
TOO MUCH AIR PRESSURE CREATES A
HAZARDOUS RISK OF BURSTING. CAREFULLY FOLLOW STEPS 3 AND 5 BELOW EACH
TIME THE COMPRESSOR IS USED.
9. Turn the "AUTO/O" lever to “AUTO” and allow tank
pressure to build. Motor will stop when tank
pressure reaches “cut-out” pressure.
10. Open the regulator by turning it clockwise. Adjust
the regulator to the correct pressure setting. Your
compressor is ready for use.
11. Always operate the air compressor in well-ventilated areas; free of gasoline or other solvent
vapors. Do not operate the compressor near the
spray area.
WHEN YOU ARE FINISHED:
12. Set the “AUTO/O” lever to “O”.
13. Turn the regulator counterclockwise and set the
outlet pressure to zero.
14. Remove the air tool or accessory.
15. Open the regulator and allow the air to slowly
bleed from the tank. Close the regulator when
tank pressure is approximately 20 psi.
16. 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.
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.
8. Check the manufacturer’s maximum pressure
rating for air tools and accessories. The regulator
outletpressure must never exceed the maximum
pressure rating.
NOTE:
If drain cock valve is plugged, release all air
pressure. The valve can then be removed,
cleaned, then reinstalled.
17. After the water has been drained, close the drain
valve. The air compressor can now be stored.
11 — ENG
D21245
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