CRAFTSMAN Air Compressor Manual L9120135

User Manual: CRAFTSMAN CRAFTSMAN Air compressor Manual CRAFTSMAN Air compressor Owner's Manual, CRAFTSMAN Air compressor installation guides

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SEARS
CRAFTSMAN

OWNERS

Model No.
919.727360

MANUAL

FOR

CRAFTSMAN
PERMANENTLY
LUBRICATED
TANK MOUNTED
AIR COMPRESSOR

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

located on the metal data plate which
welded onto the backside of the air
tank. (This data plate is painted the
same color as the tank.)
Retain these numbers

IMPORTANT:
Read the Safety Guidelines
and All Instructions Carefully
Before Operating

SAFETY GUIDELINES
ASSEMBLY
OPERATION

Model

MAINTENANCE
TROUBLESHOOTING
REPAIR PARTS

Date Code

Sold
MGP-727360

9/20/99

by Sears

for future reference.

Serial No

Tank Registration

Canada,

Inc.,

Toronto,

Ont.

M5B

2B8

TABLE OF CONTENTS
Page
WAR RANTY ............................................................
2
SAFETY GUIDELINES-DEFINITIONS

Page
Lubrication and Oil ............................................ 8
Grounding Instructions .....................................
Voltage and Circuit Protection ..........................
Extension Cords ...............................................
Break-in Procedure ...........................................

...................... 2

SAFETY GUIDELINES .............................................

8
9
9
9

IMPORTANT SAFETY INSTRUCTIONS ................... 3

OPERATING PROCEDURES .................................

GENERAL INFORMATION .......................................

MAINTENANCE

GLOSSARY .............................................................

SPECIFICATION CHART .........................................

.....................................................

Air Filter - Inspection and Replacement
..........
Check Valve -Replacement
.............................
Safety Valve - Inspection
................................
Motor ..............................................................

11
11
1t
11

Storage

...........................................................

DESCRIPTION OF OPERATION .............................. 7
TROUBLESHOOTING

GUIDE ............... ................ 12

TOOLS NEEDED FOR ASSEMBLY ......................... 7
AIR COMPRESSOR

ASSEMBLY ..............................................................

COMPRESSOR

INSTALLATION AND BREAK-IN PROCEDURES ..... 8
Location of Air Compressor .............................. 8
FULL

ONE

YEAR

DIAGRAM

.............................

HOW TO ORDER

WARRANTY

PUMP

DIAGRAM

........................

REPAIR PARTS .........................

AIR COMPRESSORS

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
(90) from the date of purchase.
This Craftsman Air Compressor
warranty
which vary from province to province.

Sears

SAFETY

Canada,

or rental purposes,

gives you specific

will apply for ninety days

legal rights and you may have other rights

Inc., Toronto,

GUIDELINES

the warranty

Ont.

M5B 2B8 .........

- DEFINITIONS-----'

This manua_ contains information that is important for you to know and understand.
This information retates to protecting
YOUR SAFETY and PREVENTING EQUIPMENT PROBLEMS. To help you recognize this informat
,
symbots to the right. Please read the manual and pay attention to these sections.
............

_o_
DANGER indicates an imminently hazardous situation which, if
not avoided, will result in death or serious inlay.

CAUTION
indicates a potentially
not avoided,
_
result in mjnor

hazardous
situation
which,
or moderate
iniur_.

WARNING indicates a potentially hazardous situation which, if
not avoided, could result in death of serio s i "u .

CAUTION used without the safety alert symbol indicates a
potentially hazardous situation which, if not avoided, _
result
n p_j_d_Ldam_g._

IMPORTANT SAFETY INSTRUCTIONS

IMPROPER OPERATION OR MAINTENANCE
OF THIS PRODUCT COULD RESULT IN SERIOUS INJURY AND PROPERTY
AGE. READ AND UNDERSTAND ALL WARNINGS AND OPERATING INSTRUCTIONS
BEFORE USING THIS EQUIPMENT.

DAM-

HAZARD
RISK OF EXPLOSION OR FIRE

HOWTOPREVENTIT

WHAT CAN HAPPEN
IT IS NORMAL FOR ELECTRICAL CONTACTS WITHIN THE
MOTOR AND PRESSURESWITCHTO SPARK.

ALWAYS OPERATE THE COMPRESSOR IN A WELL VENTILATED
AREA FREE OF COMBUSTIBLE
MATERIALS, GASOLINE OR
SOLVENT VAPORS.

IF ELECTRICAL SPARKS FROM COMPRESSOR COME INTO
CONTACT WITH FLAMMABLE
VAPORS, THEY MAY IGNITE,
CAUSING FIRE OR EXPLOSION.

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.

RESTRICTING
ANY OF THE COMPRESSOR
VENTILATION
OPENINGS WILL CAUSE SERIOUS OVERHEATING AND COULD
CAUSE FIRE.

NEVER
PLACE
OBJECTS
AGAINST
OR ON TOP
OF
COM PRESSOR. 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.

COMBUSTIBLE MATERIALS WHICH COME INTO CONTACT WITH
HOT ENGINE PARTS CAN BECOME IGNITED.

ADD FUEL OUTDOORS iN A WELL VENTILATED AREA MAKE
SURE THERE ARE NO SOURCES OF IGNITION, SUCH AS
CIGARE]q-ES NEAR REFUELING LOCATION.
OPERATE COMPRESSOR 1N A CLEAN, DRY, WELL VENTILATED
AREA A MINIMUM OF FOUR FEET FROM ANY BUILDING, OBJECT
OR WALL. DO NOT OPERATE UNIT INDOORS OR IN ANY CONFINED AREA.

UNATTEN DED OPERATION OF THIS PRODUCT COULD RESULT
IN PERSONAL INJURY OR PROPERTY DAMAGE.

RISKOF BURSTING
AIR TANK:

ALWAYS REMAIN IN ATTENDANCE
WHEN IT IS OPERATING.

WITH

THE

PRODUCT

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

HOWTO PREVENT IT

1. FAILURE TO PROPERLY DRAIN CONDENSED WATER
FROM THE TANK, CAUSING RUST AND THINNING OF THE
STEEL TANK.

DRAIN TANK DALLY OR AFTER EACH USE. IF TANK DEVELOPS A
LEAK, REPLACE IT IMMEDIATELY WITH A NEW TANK OR REPLACE
THE ENTIRE COMPESSOR,

2. MODIFICATIONS

NEVER DRILL INTO, WELD, OR MAKE ANY MODIFICATIONS
THE TANK OR ITS ATFACHMENTS.

OR A]q-EMPTED REPAIRS TO THE TANK.

3. UNAUTHORIZED MODIFICATIONS TO THE UNLOADER
VALVE, SAFETY VALVE, OR ANY OTHER COMPONENTS
WHICH CONTROL TANK PRESSURE.

THE TANK IS DESIGNED TO WITHSTAND SPECIFIC OPERATING
PRESSURES.
NEVER
MAKE
ADJUSTMENTS
OR PARTS
SUBSTITUTIONS
TO ALTER THE FACTORY SET OPERATING
PRESSURES.

4. EXCESSIVE VIBRATION CAN WEAKEN THE AIR TANK AND
CAUSE RUPTURE OR EXPLOSION. EXCESSIVE
VIBRATION WILL OCCUR IF THE COMPRESSOR IS NOT
PROPERLY MOUNTED OR IF THE ENGINE OPERATES
ABOVE RECOMMENDED RPM

DO NOT REMOVE THE STIFFENER
BAR CONNECTING THE
COMPRESSOR PUMP TO THE ENGINE, EXCEPT TO ADJUST BELT
TENSION, THEN SECURELY TIGHTEN THE STIFFNER BAR NUTS.
THIS BAR CONTROLS OUTFIT VIBRATION.

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

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 ATrACHMENTS.
NEVER USE COMPRESSOR TO INFLATE SMALL LOW-PRESSURE
OBJECTS SUCH AS CHILDREN'S TOYS, FOOTBALLS, BASKETBALLS. ETC.

RISK FROM FLYING OBJECTS

WHAT CAN HAPPEN
THE COMPRESSED
AIR STREAM
DAMAGE TO EXPOSED SKIN AND
LOOSE PARTICLES AND SMALL
RESULTING IN PROPERTY DAMAGE

CAN CAUSE SOFT TISSUE
CAN PROPEL DIRT, CHIPS,
OBJECTS AT HIGH SPEED.
OR PERSONAL INJURY

HOWTO 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.

RISK TO BREATHING

WHAT CAN HAPPEN

HOWTO PREVENT IT

THE COMPRESSED AIR FROM YOUR COMPRESSOR IS NOT SAFE
FOR BREATHING!
THE AIR STREAM MAY CONTAIN CARBON
MONOXIDE, TOXIC VAPORS OR SCUD PARTICLES FROM THE
TANK.

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

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

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.

HOWTO

PREVENT

NEVER OPERATE THE COMPRESSOR
RAINING OR IN WET CONDITIONS.
NEVER OPERATE COMPRESSOR
REMOVED OR DAMAGED.

IT
OUTDOORS

WITH COVER

WHEN

IT IS

COMPONENTS

REPAIRS ATTEMPTED
BY UNQUALIFIED
PERSONNEL CAN
RESULT IN SERIOUS INJURY OR DEATH BY ELECTROCUTION.

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

ELECTRICAL GROUNDING:
FAILURE TO PROVIDE ADEQUATE
GROUNDING TO THIS PRODUCT COULD RESULT IN SERIOUS
INJURY OR DEATH FROM ELECTROCUTION.
SEE GROUNDING
.INSTRUCTIONS

MAKE CERTAIN THAT THE ELECTRICAL CIRCUIT TO WHICH THE
COMPRESSOR IS CONNECTED PROVIDES PROPER ELECTRICAL
GROUNDING,
CORRECT
VOLTAGE AND ADEQUATE
FUSE
PROTECTION.

RISK FROM MOVING

PARTS

WHAT CAN HAPPEN

HOW

THE ENGINE CAN START ACCIDENTALLY
IF THE FLYWHEEL IS
TURNED BY HAND OR MOVED BY PULLING ON THE STARTER
ROPE
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.

TO PREVENT

ALWAYS DISCONNECT THE SPARK PLUG AND BLEED PRESSURE
FROM THE TANK BEFORE PERFORMING MAINTENANCE.
NEVER OPERATE THE COM PRESSOR WITH GUARDS OR COVERS
WHICH ARE DAMAGED OR REMOVED.

ANY REPAIRS REQUIRED ON THIS PRODUCT SHOULD RE
PERFORMED BY AUTHORIZED SERVICE CENTER PERSONNEL.

RISK OF BURNS

WHAT CAN HAPPEN

HOWTO PREVENT IT

TOUCHING EXPOSED METAL SUCH AS THE COMPRESSOR HEAD
OR OUTLET TUBES OR CONTACT WITH HOT ENGINE PARTS,
SUCH AS THE MUFFLER, CAN RESULT IN SERIOUS BURNS.
THE GASOLINE ENGINE, THE ENGINE MUFFLER, THE COMPRESSOR HEAD AND TUBING BECOME VERY HOT DURING OPERATION.

NEVER TOUCH

ANY EXPOSED

METAL PARTS ON ENGINE

COMPRESSOR
DURING OR IMMEDIATELY AFTER OPERATION
ENGINE AND 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

WHATCANHAPPEN
A PORTABLE
COMPRESSOR
CAN FALL FROM A TABLE,
WORKBENCH OR ROOF CAUSING DAMAGETO THE COMPRESSOR AND COULD RESULTIN SERIOUSINJURY
OR DEATH TO
THE OPERATOR.

HOWTO

PREVENT

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.

RISK OF PROPERTY DAMAGE WHEN TRANSPORTING
COIVlPFESSOR
(Fire, Inhalation,
Damage to Vehicle Surfaces)
WHAT CAN HAPPEN

HOWTO PREVENT IT

FUEL OR OIL CAN LEAK OR SPILL AND COULD RESULT IN FIRE
OR BREATHING HAZARD, SERIOUS INJURY OR DEATH CAN RESULT.
FUEL OR OIL LEAKS WILL DAMAGE CARPET, PAINT OR OTHER SURFACES IN VEHICLES OR TRAILERS.

IF COMPRESSOR IS EQUIPPED WITH A FUEL SHUT-OFF VALVE,
TURN THE VALVE TO THE OFF POSITION BEFORE TRANSPORTING TO AVOID FUEL LEAKS. IF COMPRESSOR IS NOT EQUIPPED
WITH A FUEL SHUT-OFF VALVE, DRAIN THE FUEL FROM TANK
BEFORE TRANSPORTING
TRANSPORT FUEL ONLY IN AN OSHA
APPROVED CONTAINER ALWAYS PLACE COMPRESSOR ON A PRO
TECTIVE MAT WHEN TRANSPORTING TO PROTECT AGAINST DAMAGE TO VEHICLE FROM LEAKS. REMOVE COMPRESSOR FROM
VEHICLE IMMEDIATELY UPON ARRIVAL AT YOUR DESTINATION.

$5W.99

8/2/99

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, blow guns, nailers/staplers,
air brushes,

and inflator kits. An air pressure regulator is required for
most of the applications.
An inline air filter which removes moisture and dirt from
compressed air should be used where applicable.
An inline regulator can be used if a more precise adjustment of air pressure is needed downstream.

GLOSSARY
CFM:

Cubic Feet per Minute.

SCFM: Standard
of air delivery.

Cubic Feet per Minute; a unit of measure

PSh Pounds per Square Inch; a unit of measure of pressure.
ASME: American
tested, inspected
the ASME,

Society of Mechanical Engineers; made,
and registered to meet the standards of

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 pres
sure 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

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 automati-

the applicable
performance.

CSA standard

(s) for safety and electrical

cally. The low pressure at which the motor automatically
restarts is called "cut-in pressure."

SPECIFICATION
Model
Bore
Stroke

No.

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

CHART
919.727360
2 3/8"
1.35"
120
15 amps
Time Delay
15,0
ASME!30 gal. (U.S.)
100
130
7.8
5.5

DESCRIPTION
Air Compressor
Pump: To compress air, the piston moves
up and clown 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:
lever. It is labeled

The pressure switch is fitted with a small
"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 Io+
cated 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
wilt 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.

OF OPERATION
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 )articular accessory, the outlet regulated air pressure ma, 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.
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.
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
• a 9/16" socket and an open end wrench for attaching
the wheels

for Assembly
• a 3/8" open end wrench or socket to tighten handle
screws

ASSEMBLY
Installing Wheels,
Foot Strip

Handles,

Rubber
1. Attach the handle to the compressor saddle by
inserting the handle inside the compressor saddle and
lining up the two bolt holes on each side. Install the
four screws, two on each side. Tighten securely.

THE WHEELS AND HANDLE DO NOT
PROVIDE ADEQUATE CLEARANCE,
STABILITY OR SUPPORT FOR
PULLING THE UNIT UP AND DOWN
STAIRS OR STEP& THE UNIT MUST
BE LIFTED, OR PUSHED UP A RAMP.

Install one shoulder bolt and one nut for each wheel.
Tighten securely. The compressor will sit level if the
wheels are properly installed.

Clean and dry underside of air tank leg opposite wheels.
Remove the protective paper strip from the adhesive
backed rubber foot strip. Attach the rubber foot strip
to the bottom of leg. Press firmly into place,

BREAK-IN PROCEDURES
Location

of the Air Compressor

Locate the air compressor
in a clean, dry and well ventilated area. The air filter must be kept clear of obstructions
which could reduce air delivery of the air compressor. The
air compressor should be located at least 12" away from
the wall or other obstructions that will interfere with the flow
of fresh
intake and cooling air.

Lubrication

CAN RESULT IN

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.

and Oil

This unit needs no lubrication

Grounding

IMPROPER GROUNDING
ELECTRICAL SHOCK.

or oiling.

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.

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.

120 Volt Models
white

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.

15 AMP PLUG

OUTLET

_GROUNDED

GR_N_SG J
PIN

Voltage and Circuit Protection
Refer to page 5 (Specification Chart) 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 the air compressor
is operated on. If the
compressor is connected to a circuit protected by fuses,
use only dual element time delay fuses.

Extension

Cords

It is preferable to use extra air hose instead of an extension cord to avoid voltage drop and power loss to the
motor, and to prevent overheating.

If an extension

cord must be used, be sure it is:

12 gauge (AWG) or heavier. (Wire size increases as
gauge number decreases.
10 AWG and 8 AWG may
also be used. DO NOT USE 14 OR 16 AWG.)
a three-wire extension cord that has a three-connector grounding plug, and a three-slot receptacle that
wi!l accept the plug.
n,: longer than 50 feet
rr] good condition

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 clockwise,
opening it fully, to
prevent air pressure build-up in the tank.
5. Move the "AUTO/C)" tever to AUTO".
The compressor will start,
6. RUN THE COMPRESSOR
FOR 15 MINUTES.
Make
sure the regulator is open and there is no tank prossure build up.
7. After 15 minutes, close the regulator by turning _t
counterclockwise.
The air tank will fill to cut out
pressure and then the motor will stop.

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.

6. 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.

2. Attach hose and accessories.
WHEN YOU ARE FINISHED:
7. Set the "AUTO/O" lever to "O".
8. Turn the regulator counterclockwise
outlet pressure to zero,

TOO MUCH AIR PRESSURE CREATES A
HAZARDOUS RISK OF BURSTING. CAREFULLY FOLLOW STEPS 3 AND 5 BELOW
EACH TIME THE COMPRESSOR IS
USED.

and set the

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 pressure
is approximately
20 psi.
11. Drain water from air tank.

Compressed
air from the outfit
may
contain
water condensation.
Do not
spray

unfiltered

air at an item

that

could
WATER

be damaged.
Some air operated
tools
or devices
may require
filtered
air. Read
the instructions
for the air tool or

CAUSING
TURE.

device.

3. Check the manufacturer's maximum pressure rating
for air tools and accessones.
The regulator outlet
pressure must never exceed the maximum pressure
rating.
4. Turn the "AUTO/O"

WILL

CONDENSE

TANK.
IF NOT DRAINED,
CORRODE
AND WEAKEN
A RISK

THE

AIR

WATER WILL
THE AIR TANK

OF AIR

TANK

RUP-

NOTE:
If drain cock valve is plugged, release
all air pressure. The valve can then be
removed, cleaned, then reinstalled.

lever to "AUTO" and allow tank

pressure to build. Motor will stop when tank pressure
reaches "cut-out" pressure.

12.After the water has been drained, close the drain
valve. The air compressor can now be stored

5. Open the regulator by turning it clockwise.
Adjust
the regulator to the correct pressure setting. Your
compressor is ready for use.

MAINTENANCE
UNIT CYCLES AUTOMATICALLYWHEN POWER IS ON. WHEN DOING MAINTENANCE, YOU MAY BE
EXPOSED TO VOLTAGESOURCES, COMPRESSED AIR OR MOVING PARTS.PERSONALINJURIES CAN
OCCUR. BEFORE PERFORMING ANY MAINTENANCE OR REPAIR, UNPLUG THE COMPRESSOR AND
BLEED OFF ALL AIR PRESSURE.
ALL MAINTENANCE AND REPAIR OPERATIONS NOT LISTED MUST BE DONE BY A QUALIFIED SERVICE TECHNICIAN.

Air Filter - Inspection

and Replacement

Safety Valve - Inspection

Hot surfaces. Risk of burn. Compressor heads
are exposed when filter cover is removed. Allow
compressor to cool prior to servicing.

"_"-_--Filter

If the safety valve does not work properly,
over-pressurization
may occur, causing air tank
rupture or an explosion. Before starting compressor, pull the ring on the safety valve to make sure
that the safety valve operates freely. If the valve is
stuck or does not operate smoothly, it must be
replaced with the same type of valve.

Retainer

Filter
Keep the air filter clean at all times. Do not operate the compressor with the air filter removed.

Motor

A dirty air filter will not allow the compressor to operate at full
capacity. Before you use the compressor, check the air filter to
be sure it is clean.

Check Valve Cleaning

The motor has an automatic reset thermal overload protector.
If the motor overheats for any reason, the overload protector
will shut off the motor. The motor must be allowed to coot
down before restarting. The compressor will automatically
restart after the motor cools.

- Replacement

If the overload protector shuts the motor off frequently, check
for a possible voltage problem. Low voltage can also be suspected when:

Risk of personal injury. Manifold assembly contains compressed air which can be hazardous.
Manifold gets hot during operation.
Before servicing:
•
Unplug or disconnect electrical supply to
compressor.
•
Bleed tank of pressure.
Allow compressor to cool.

1. The motor does not get up to full power or speed.
2. Fuses blow out when starting the motor; lights dim and
remain dim when motor is started and is running.

1. Release all air pressure from air tank and unplug outfit.
2. Remove shroud. (Key Nos. 1 and 2)
3. Loosen the top and bottom nuts and remove the outlet
tube. (Key Nos. 31, 33, and 34)
4. Remove the pressure release tube, fitting, and connecto[
(Key Nos. 25, 26 and 27)
5. Unscrew the check valve (turn counterclockwise)
using a
socket wrench. (Key No. 17)
6. Check that the valve disc moves freely inside the check
valve and that the spring holds the disc in the upper,
closed position. The check valve may be cleaned with a
solvent, such as paint and varnish remover.
7. Apply a Teflon based pipe sealant to the check valve
threads. Reinstall the check valve (turn clockwise).
8. Replace the pressure release tube and fitting.
9. Replace the outlet tube and tighten top and bottom nuts.
10. Replace the shroud.

Storage
Before you store the air compressor, make sure you do the
following:
1. Review the Maintenance and "Operating Procedures"
sections and perform maintenance as necessary. Be
sure to drain water from the air tank.
2. Protect the electrical cord and air hose from damage
(such as being stepped on or run over). Wind them
loosely around the compressor handle,
Store

the air compressor

in a clean

and dry location.

TROUBLESHOOTING

GUIDE

PERFORMING REPAIRS MAY EXPOSE VOLTAGE SOURCES, MOVING PARTS OR COMPRESSED AIR SOURCES.
PERSONAL INJURY MAY OCCUR. PRIOR TO ATTEMPTING ANY REPAIRS, UNPLUG THE COMPRESSOR AND
BLEED OFF TANK AIR PRESSURE.

PROBLEM

CAUSE

Excessive tank pressure - safety
valve pops off.

Air leaks at fittings

or hose.

Air leaks at pressure switch
release valve.

CORRECTION

Pressure switch does not shut off
motor when compressor reaches
cut-out pressure.

Move the pressure switch lever to the "O"
position. If the compressor doesn't shut off,
disconnect from the electrical outlet source
and return to a Sears Service Center to replace the pressure switch.

Pressure switch

Return the compressor to Sears Service Center to check and adjust, or replace switch.

cut-out

too high.

Tube or hose fittings are not tight
enough.

Tighten fittings ustng teflon tape where air
can be heard escaping. Check fittings with
soapy water solution. DO NOT OVERTIGHTEN.

Defective pressure switch release valve.

Return to Sears Service Center for replacement of pressure switch.
Check to see if the pin in the bottom of the
pressure release valve is stuck. If it does not
move freely, return to the Service Center for
replacement of pressure switch.

Air leaks in air tank or at air tank
welds.

Defective or dirty check valve.

A defective check valve results in a constant
air leak at the pressure release valve when
there is pressure in the tank and the compressor is shut off. Remove and clean or replace check valve. DO NOT OVERTIGHTEN.

Defective air tank.

Air tank must be replaced. Do not repair the
leak. Return compressor to Sears Service
Center.

DO NOT DRILL INTO, WELD OR OTHERWISE MODIFY
AIR TANK OR IT WILL
WEAKEN. THE TANK CAN RUPTURE OR
EXPLODE.

Air leaks between head and valve
plate.

Leaking seal.

Torque head screws to 7-10 ft. Ibs. If this does
not stop leak, replace seal.

Pressure reading on the regulated
pressure gauge drops when an
accessory is used.

It is normal for some pressure drop
to occuE

If there is an excessive amount of pressure
drop when the accessory is used, adjust the
regulator.
NOTE
Adjust the regulated pressure under flow conditions (while accessory is being used).

Air leak from

Knocking

safety

noise

valve.

Possible

Defective

defect

check

in safety

vatve.

valve.

Operate safety valve manually by pul{ing on
ring. If valve still leaks, it should be
replaced.
Remove

and clean,

or replace.

TROUBLESHOOTING

GUIDE (Continued)

PROBLEM

CAUSE

CORRECTION

Compressor is not supplying
enough air to operate accessories.

Compressor is not large enough for
air requirement.

Check the accessory air requirement. If it is higher
than the SCFM or pressure supplied by your air
compressor, you need a larger compressor.

Restricted air intake filter.

Clean or replace air intake filter. Do not operate the
air compressor in any paint spray or drywall
sanding area.

Hole in hose.

Check and replace if required.

Check valve restricted.

Remove and clean, or replace.

Air leaks.

Tighten fittings.

Present tank pressure exceeds
pressure switch "cut-in" pressure.

Motor will start automatically when tank pressure
drops below "cut-in" pressure of pressure switch.

Fuse blown, circuit breaker tripped.

Check fuse box for blown fuse and replace, if
necessary. Reset circuit breaker. Do not use a
fuse or circuit breaker with higher rating than
that specified for your particular branch circuit.

Check for proper fuse; only Time Delay fuses
ere acceptable.

Check

for low voltage

proper

extension

Motor

will not run or restart.

Regulator knob continuous air
leak. Regulator will not shut
off at air outlet.

conditions

and/or

cord.

Disconnect the other electrical appliances
from circuit or operate the compressor on its
own branch circuit.

Check for loose electrical connections.

Motor overload protection switch has
tripped.

Let motor cool off and overload switch will automatically reset.

Possible defective motor or
capactioc

Return to Sears Service Center for inspection or
replacement, if necessary.

Paint spray on internal motor parts.

Have compressor checked at Sears Service
Center. Do not operate the compressor in the paint
spray area. See flammable vapor warning.

Check valve stuck open, putting
pressure on head.

Remove and c_ean, or replace the check valve.

Pressure release valve on pressure
switch has not unloaded head
pressure.

Bleed the line by pushing the lever on the pressure
switch to the "0" position; if the valve does not
open, replace it.

Broken exhaust varve.

Inspect and replace if necessary.

Di_y ordamaged
paKs.

Replace regulator.

regul_orinternal

AIR COMPRESSOR

DIAGRAM

?
l

5O
_47

PARTS LIST
KEY
NO.
1
2
3
4
5
6
7
x8
x9
10
11
12
13
14
15
16
17
18
19
22
23
24
26
27
31
32
33
34
37
38
39
40
41
42
43A
43
44
45
46
47
48
49
50
51

QUANTITY

PART NUMBER

DESCRIPTION

1
1
1
1
1
1
1
1
1
1
1
1
1
1

CAC-1317
AC-O029
LA-3143
LA-3260
CL-1222
SSF-553-1
SSG-3102
CAC-1373
CAC-1372
AC-0012
CAC-61
AC-0009-1
AC-0010-1
AC-0374

Shroud, Front
Shroud, Rear
Label, Performance
Label, Billboard
Label, Model Number
Screw #10-24x9/16 Pan HD (Torque 15-35 in./Ibs.)
O-ring
Filter Retainer
Filter Foam
Console, Shroud
Ring Panel Mounting
Gauge RT hand
Gauge LT hand
Manifold

1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
2
2
3
1
1
1
1
1
1
1
2
2
2
1
4

SSP-480
LA-2632-1
AC-0631
SSP-485
AC-O007
97503734
H-2101
AC-0375
SSP-7811
AC-0028
SSP-7821-1
SSG-3105
SSP-7813
AC-0097
SUDL-413-2
ACG-18
91895680
ACG-19
TA-4318
LA-3069
LA-2633
LA-1978-1
SSP-470-1
SS-2707
SUDL-6-1
CAC-60
CAC-4313
SSF-8080-ZN
AC-0564
SSF-981

Nipple, 1/4 x 2.5"
Label Warning
Check Valve
Reducer
Regulator
Safety Valve
Adaptor
Pressure Switch
Nut/Sleeve Assy.
Pressure Relief Tube
Nut, Compression (Torque 120-140 in./Ibs.)
O-Ring
NuVSleeve Assy. (Torque-hand tight plus one turn)
Outlet Tube
Cord Assembly
Cup, Saddle Mount
Screw, 1/4_20 x .75 (Torque 9-12 ft./Ibs.)
Isolator
Tank - 30 Gal. (U.S.)
Label, Sears Craftsman
Label, Drain Tank (French)
Label, Drain Tank
Hex Reducer Bushing
Drain Valve
Strip, Rubber Foot
Shoulder Bolt
Wheel, 10"
Nut, Hex 3/8"
Handle
Screw

X Key No's. 8 and 9 can be purchased

as KK-5041

Muffler/Foam

Kit

COMPRESSOR

PUMP

DIAGRAM

86
/

PARTS LIST

KEY
NO.

+
+
+
+
+

QUANTITY

52
53
54
56
57
"58
• 59
*60
"61
*62
63
64
"65
66
67
68
69

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4
1

NOT ILLUSTRATED
MGP-727360

ALSO INCLUDED
•
H-7040-1
•
AC90
•
AC100
•
AC20
•
AC150
•

9-71715

PART NUMBER

DESCRIPTION

MO-9083
AC-0140
AC-0108
SSF-586
SSF-615
AC-0263
ACG-2
DAC-308
ACG-29
SSF-3158-1
SSG-8156
AC-0032
ACG-45
CAC-1371
AC-0037
SSF-927
DAC-161

Motor
Eccentric Bearing Assy.
Fan Kit
Screw 1/4 - 20 (Torque 100-120 in./Ibs.)
Screw (Eccentric, Torque 100-120 in./Ibs.)
Sleeve, Cylinder
Connecting Rod
Compression Ring
Connecting Rod Cap
Screw, #10-24 (Torque 61-70 in./Ibs.)
O-ring
Valve Plate Assy.
O-ring, Head
Muffler
Head
Screw 1/4" - 20 x 1 1/4" (Torque 7-10 ft./Ibs.)
Shim Rolled Edge

Owners Manual

Hose, 3/8" x 25' Long
Quick Connect 1/4" Female (qty 2)
Quick Connect Plug 1/4" Male (qty 2)
Dual Tire Chuck
Blow Gun
Sears Ratchet

• Key No's. 58, 59, 60, 61,62, and 65 can be purchased as KK-4835 Connecting Rod Kit.
+ Key No's 58, 60, 62, 63, and 65 can be purchased as K-0058, Compression
Ring Kit.

NOTES

SE_A/R6
CRAFTSMAN

MODEL

NO.

OWNERS MANUAL FOR
PERMANENTLY
LUBRICATED
TANK MOUNTED
AIR COMPRESSOR
The model number of your Sears Air Compressor can be found
on the maintenance
rabel on the top of the shroud or on the bar
code label on the rear of the air tank.

SERVICE

SERVICE
CALL

AND

REPAIR

PARTS

1-800-665-4455"

Keep this number

handy should you require a service call or
need to order repair parts.
If ordering parts make sure you have the name, make and
model no. of the merchandise
and the name and number of
the part you wish to order.

*If calling locally, please use one of the following
Regina
Toronto
Kitchener

- 566-5124
- 744-4900
- 894-7590
Vancouver

HOW TO ORDER
REPAIR PARTS

Montreal
Halifax
Ottawa

numbers:

- 333-5740
- 454-2444
- 738-4440

- 420-8211

WHEN ORDERING REPAIR PARTS,
FOLLOWING
INFORMATION:

ALWAYS

GIVE THE

• PART NUMBER

• PART DESCRIPTION

• MODEL NUMBER

• NAME OF ITEM

All parts listed may be ordered
and most Sears stores.

from any Sears Service Center

If the parts you need are not stocked locally, your order will be
electronically
transmitted to a Sears Repair Parts Distribution
Center for handling.

Sold

By Sears

Canada,

Inc., Toronto,

Ont.

MSB

2B8

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CRAFTSMAN Air Compressor Manual L9120135

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