Page 1
SE_AR8
OWNERS
MANUAL
MODEL NO.
919,150270
Listed
7"21Y
Air
Compressor
CRAFTSMAN
COMPACT AIR COMPRESSOR
Record In the spaces provided.
(1) The model number which can be
found On the Io1_1on the back of tha
unit.
IMPORTANT
Read the Safety Guideline=;
and All Instructions
Carefully Before Operstlng
S1_30-0_2-C !t/88
(2) The date €ode number which can be
found on t_e foil lahet onme bottom
ofthe unlL
ASSEMBLY
OPERATION
MAINTENANCE
REPAIR PARTS
Sears, Roebuck and Co., Chicago, IL 60684 U.S.A.
Retain mue numbers for future
refelr_,
Page 2
TABLE OF CONTENTS
WARRANTY ....................................................... 3
SAFETY GUIDELINES AND CHART .............................. 3
WARNING CHART ................................................. 4
SPECIFICATION CHART .......................................... s
.GLOSSARY ........................................................ ,5
GENERAL INFORMATION ........................................ 5
DESCRIPTION OF OPERATION .................................. 5
UNPACKING INSTRUCTIONS ..................................... 6
ASSEMBLY INSTRUCTIONS ...................................... 6
Tools Needed for AssemDly......................................... 6
Installing RubberFeet ............................................. 6
INSTALLATION AND START-UP PROCEDURES ................. 6
L_ation of Air Compressor......................................... 6
Extension Cords .................................................. 6
GroundingInstructions............................................. 6
OPERATING PROCEDURES ..................................... 7
MAINTENANCE ................................................... 7
Air Int_<eFilter- Replacement...................................... 7
Motor............................................................ 7
WiringDiagram........................................... "........ 8
STORAGE ......................................................... 8
GUIDE TO ACCESSORIES ................................. 8
TROUBLESHOOTING GUIDE ..................................... 9
AIR COMPRESSOR DIAGRAM ................................... lo
ust ........................................................ _o
COMPRESSOR PUMP DIAGRAM ............................... 11
Parts List ....................................................... 11
HOW TO ORDER REPAIR PARTS ............................... 12
Page 3
FULL ONE YEAR WARRANTY
ON AIR COMPRESSORS
If this air compressor fails due to a def_-t in material orworkmanship within one year from the
date of purchase, return it to the nearest Sears Service Canter/Department throughout the United
States and Sears will repair it, free of charge.
Ifthis air compressor is used for commercial or rental purposes, the warranty will apply for ninety
days from the date of purchase,
This warranty gives you specifm legal rights and you may have other rights which vary from state
to state.
Sears, Roebuck and Co., Sears Tower, Dept. 698/731 CR.W, Chicago, IL 60884
SAFETY GUIDELINES
This manual cont_ns information that is important for you tO know and understand.
This information relates to YOUR SAFETY and PREVENTING EQUIPMENT PROBLEMS.
To help yOurecognize this information, we use the following symbols. Please read the manual and
pay attention to tho_e sections.
URGENT SAFETY INFORMATION - A
HAZARD THAT W/LL CAUSE SERIOUS
INJURY OR LOSS OF LIFE.
L
WARNING ..........
I IIIIIIIIIIII
IMPORTANT SAFETY INFORMATION -
A HAZARD THAT MIGHT CAUSE
SERIOUS iNJURY OR LOSS OF LIFE.
information for preventing damage 1o
equipment.
NOTE
Information that you should pay special
attention to.
3
Page 4
HAZARDSCAN OCCUR IF EQUIPMENT IS NOT USED PROPERLY.
READ THE FOLLOWING CHART
N, , ,,,,,,, ,,,,,,,i ,,,,,,,,,,1111
WHAT TO LOOK FOR HOW TO PREVENT IT
Hot Parts The top of the compressor gets Nevertouchthetopoftheaircompressor during
hot when the compresSOris run- or immediately after operation. Always use the
ning. If you touch it, you may be handle,
seriously burned.
Flammabie _/a_ It is normal for the motor's etectri- The air compressor must only be used in well
cal contacts to spark when the ventilated areas, free of gasoline or SOlvent
compressor starts or stops. A vapors.
spark can ignite flammable
vapors from gasoline or SOlvents, Do not operate the compressor white you are
causing an explosion or fire. carrying it, or in the spray amiL
om eased Ai Compressed air can propel dust, Never point any nozzle or sprayer toward a per-
Toxic Vapors ....
Electricity
Unsuitable
Solvents
;....................................................
dirt or loose particles itcomes in Son or any part of the body.
contact with.
Always wear safety goggles or glasses when
using the air compre6sor.
Always turn the air compressor off before
attaching or removing accessodas.
Too much air pressure applied to
air tools or accessories can
cause damage or riskof bursting.
It is normal for compressed air to
contain toxic or irritating vapors.
Such vapors are harmful if
inhaled.
Certain materials you are spray-
ing (like palm, weed Idller,sand or
insecticide) can be harmful if you
inhale them.
,, ,,,,,
Your air compresSOr is powered
by electricity. Like any other elec-
trically powered device, if It is not
used propertyitcan cause electri-
cal shock.
and Methylene Chloride can
chemically react with aluminum
used in paint spray guns, paint
pumps, etc., and cause an explo-
sion. These solvents can also
react with galvanized compo-
nents and cause corrosion and
weakening of parts, This wilt not
affect your air compressor, but it
may affect the equipment you
use.
Check the manufacturer's maximum pressure
rating for air tools and accessodes. Regulator
outlet pressure must never e_ceed the max-
imum pressure rating.
Never dim°tly inhale the compressed air pro-
duceq by this unit.
Read and follow the safety instructions pro-
vtded on the label or safety data sheet for the
material you are spraying. Use a respirator
mask if there is a chance of inhaling anything
you are spraying. Read all instructions.., be
sum that the respirator mask is suitable for yOur
application.
Aiways unplug the air _pressor priorto main- "
tenance or repair.
Never use the air compressor in the rain.
Always plug the cord into an electrical outlet
with the specified voltage and adequate fuse
protection.
.........
Read the label or data sheet supplied with the
material you intend to spray. If it contains the
solvents listed do not use accessories that con-
tain aluminum or galvanized parts. You must
either change the material you intend to spray,
or use only stainless steel spray equipment.
ii , i ,,,i,
Page 5
SPECIFICATION CHART
Model No. 919.1S0270
Horsepower _/,
SCFM @ 40 psig 2.7
SCFM @ 9Opsig 2.0
Disptecement CFM 4.0
Bore 2%"
Stroke ,9"
Voltage-Single Phase 110-120
Minimum Branch Circuit Requtrem_mt 15 AMPS
"Fuse Type Time Delay
Amperage at Max. Pressure 10.6
"A circuit breaker is preferred. Use only a fuse or circuit breaker that is the same rating as the branch cimult the air
compressor is operated on. If the air compressor is connected to a circuit pmtented by fuses, use time delay fuses.
GLOSSARY
SCFM or CFM: Standard Cubic Feet per Minute; a unit
of measurement of air delivery.
PSIG Or PSI: Pounds per Square inch gauge.
GENERAL INFORMATION
Congratutetions! You have pumhased a one cylinder, _Y=
HP compact oilisss compressor. The absence of a tank
gives you added mobility as well as ease In storage,
while the _/,=HP motor allows you to utilizemany airtools,
including Inflators, blow guns, spray guns. air brushes,
caulking guns and etchers. OJIlessdesign means you
neverhave to add oil and its oi!tsesfeature also guaran-
tees that you will spray entirely oil-free air.
DESCRIPTION OF OPERATION
AIR
U.L Listed: Underwriter laboratories; samples ofcorn-
pmssor outfits, takan from production, were submitted to
U.L and found to comply with their requirements for
design and performance.
A %" x 15' all"hose is supplied with yourcompreSsor, aS
well as an air chuck, Accossodes for use with your new
compressor are available through the current Sears
sales catalog, or at full line Sears stores. Your compres-
sor witl operate many accessodes. Check the pressure
and flow rating recommended by the accessory manu-
facturer- be sure it is compatible with the airdelivery of
your cOmpressor.
F/gumI
Air Compressor Pump: To compress air, the piston
moves up and down in the cylinder. On the downstroke,
air isdrawn in through the air intake muffler° The exhaust
valve remains closed. On the upstrokeof the piston, air is
compressed. The intake valves close and compressed
air is forced out through the exhaust valve and then
through the air hose.
Adjustable Pressure Valve Knob: The pressure valve
knob controls the amount of pressure going from the air
compressor to the accessory, Pressure can be set at any
point between 10 and 100 RS,I. (100 P.S.I. is the highest
pressure this compressor will deliver,) Always set the
pressure valve knob at or below the required pressure for
the accessory being used, THE ADJUSTABLE PRES-
SURE VALVE KNOB MUST BE SET AT "START"
BEFORE YOU START THE COMPRESSOR,
5
Page 6
Tools Needed for Unpacking
A +/2"socket wrench.
Grasp the handle _undlift the air compressor out of the
carton. Remove the styrofoam and plastic brace.
ASSEMBLY INSTRUCTIONS
INSTRUCTIONS
Note the plastic brace attached to the air compres_
sot"by a hex screw, Using a _h" socket wrench, remove
the hex screw. Dlacard both the screw and the plastic
brace.
Tools Needed for Assembly
A phillips screwdriver.
Installing rubber feet.
Enclosed with this compressor you will find three
screws, three rubber feet, three eyelets and two flat
washers. You will attach these to the bottom of the unit.
Refer to the air compressor diagram on page 10,
INSTALLATION AND STAR'FUP PROCEDURES
Location of the Air Compressor
Operate the air compressor ina dry, dean, cool and well
ventilated area, The air intake muffler must be kept clear
of obstructions which could reduce air delivery of the air
compressor, The air compressor pump and case are
designed to allow for proper cooling. Clean or blow off
dust or dirt that collects on air compressor. A clean air
compressor runs cooler and provides longer service.
The ventilation openings on your air compressor are
necessary to maintain proper operating temperature.
Do not place rags or other containers on or near these
openings.
Extension Cords
USe extra air hose instead of an extension cord TOavoid
voltage drop end power loss to the motor.
.
Turn your compressor on its side.
2,
insert eyelet into rubber fool
3,
Center hole in rubber foot over fiat washer and hole in
bottom of unit. Insert screw and tighten. Note: Longer
screws and flat washers are to be used under front
twofeet on/y. Shorter screw istobe used onback foot
only. Continue this process until all three feet are on
unit,
.
The air compressor is designed for 120 voltoperation
only and is equipped with a cord having a grounding
wire with an appmgriate grounding plug. The plug
must be used with an outtet that has been instalted
and grounded inaccordance with all local codes and
ordinances (see figure 2). The outlet must have the
same configuration as the plug. DO NOT USE AN
ADAPTER.
2. 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 electrician.
3. Before each use, inspect the plug and cord. Do not
use if them are signs of damage.
If you mum use an extension cord be sure it is:
• a 3-wire extension cord that has a 3-blade grounding
plug, and a 3-slot receptacle that will accept the plug
on the compressor,
• in good condition.
• 50 feet or shorter.
• 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.
Grounding Instructions
=,,. ....,
l &RNING j
IIIII
IMPROPER GROUNDING CAN RESULT IN A
RISK OF ELECTRICAL SHOCK. IN THE
EVENT OF A SHORT CIRCUIT, GROUNDING
REDUCES THE RISK OF SHOCK BY PRO-
VIDING AN ESCAPE WIRE FOR THE ELEC-
MUST BE PROPERLY GROUNDED. READ
TRIC CURRENT_ THIS AIR COMPRESSOR _ _/I =_N._
THE FOLLOWING.
RISK OF ELECTRICAL SHOCK, IF REPAIR-
ING OR REPLACING CORD OR PLUG, THE
GROUNDING WIRE MUST BE KEPT SEPA-
RATE FROM THE CURRENT CARRYING
WIRES. NEVER CONNECT THE GROUND-
ING WIRE TO A FLAT BLADE PLUG TER-
MINAL, (THE GROUNDING WIRE HAS
EITHER GREEN INSULATION OR GREEN
INSULATION WITH A YELLOW STRIPE).
itthese grounding insttuotions are not completely under-
stood, or if in doubt as to wh_her the compressor is
properly grounded, have the installation _ by a
qualified electrician.
Ground
PIN
Page 7
OPERATING PROCEDURES
1. Before plugging inthe air compressor, set the adjust-
able pressure valve to =Start-. Make sure the _ON-
OFF* switch is in the "OFF" position.
2. Connect the air hose to the air outtetaclapter.Tighten
securely.
3, Connect the air tool or accessory to the air hose.
Tighten securely.
4. Plug the power cord into the grounded outlet.
5. Start the compressor by settJngthe "ON-OFF" switch
to the "ON" position.
I WARNING I
TOO MUCH AIR PRESSURE COULD CAUSE
AN AIR TOOL OR VEHICLE TIRE TO RUP-
TURE OR EXPLODE. CAREFULLY FOLLOW
STEPS 6 AND 7 EACH TIME YOU USE YOUR
COMPRESSOR.
6. Check the manufacturer's maximum pressure rating
for the air tool, accessory or vehicle tire being used.
The air compressor outlet pressure must never
exceed the maximum pressure rating.
7. Slowly Jr=creasethe pressuresetting ofthe adjuatabI
pressure valve. You should be able to hear and fe,
air pressure being relieved by the adjustable pressu_
valve. If pressure is not being relieved, turn the a
compressor off immediately. The pressure valv
must be replaced.
Compressed air from the outfit may contain
water rmndensation and oil mist, Do not
spray unfiltered air at an Item that could be
damaged, Some air operated toots or
devices may require filtered air. Read the
Instructions fix the air tool of device.
NOTE
Iftheair comPr_R,_ has been bdatly turned off,
the adjustable pressure valve must be reset to
the "Start" position. The aircompressor will not
start with backpressure applied to the piston.
MAINTENANCE
I WARNING I
DURING MAINTENANCE, YOU COULD BE EXPOSED TO VOLTAGE SOURCES, COMPRESSED
AIR OR MOVING PARTS, PERSONAL INJURIES CAN OCCUR. UNPLUG THE COMPRESSOR
AND BLEED OFF ALL AIR PRESSURE BY TURNING THE ADJUSTABLE PRESSURE VALVE TO
THE START POSITION BEFORE DOING ANY MAINTENANCE OR REPAIR.
Air Intake Filter- Replacement
NOTE
Keep air intake filter clean at all times. Do not
operate the compressor with the filterremoved.
A dirty air intake filter will not allow the compressor to
operate at full capacity. When the filter becomes dirty, it
must he cleaned or replaced. To re_e the filter, simply
pull it out and replace with a new one. if it is dirty, simply
pull it out - you may wash it with s mild detergent and
warm water.
Motor
The motor has an automatic meet thermal overload pro-
rector, If the motor overheats f0r any reason, the over-
load protect0r will shut offthe motor. The motormust be
allowed to cool. The motor will automatically re-start
after the motor has cooled.
NOTE
Ifif_ overload protector shuts the motor off fre-
quently, check for a possible voltage problem.
Low voltage can also be suspected when:
1. the motor does not get up to full power or
speed;
2, fuses b!ow out when starting the motor;
3. lights dim and remain dim when motor is
started and running.
7
Page 8
Motor I_eplaP.,ement - Wiring Diagram
m./_ K .... Conna=t
IG - s._
=i! ii!
1;= I tP,
I L'--= "I II i_!lui__
!i i
= I
STORAGE
When you have finished using the air c0mp_ssOr:.
1. Set the "ON-OFF" switch to _OFF" and unplug the '
cord.
2. Relieve all pressure from the air ¢ompressor head
and air hose byturning the adjustable pressure valve
tothe "Start"position.
3. Protect the electrical cord and air hose frOmdamage
by winding them loosely around the air compressor.
4. Store the air compressor ina clean arid dry location.
ACCESSORIES
Your new compressor can operate many air operated
tools and accessories. Below are some examples of
equipment available and a bi_et description of what can
be done with your compact compressor and this
equipmont
INFLATION EQUIPMENT
Using an air chuck, you can inflate tires by setting the
adjustable pressure valve at the pressure marked on the
tire. By using an adapter available in an inflatorKit, you
can inflate air mattresses, rafts, toys, bicycle tires, pools,
bails and much more.
SPRAY GUNS
There are several types of spray guns available for use
with yourcompaof compressor. Youcan paint toys, lawn
lumiture, fermes and do a variety ofother small painting
jobs. Where you might have used a spray can of paint
before, a spray gun will give you morn control, less mess,
less waste and a better finish.
BLOW GUN
Another handy item is tim blow gun. It can be used to
blow dust and dirt from many types of equipment. For
example, your air conditioner, vents on your car,
refrigerator,yourfurnace and filters, work bangles, table
sews, and clogged fuel lines. (All electrical equipment
must be unplugged before cleaning.)
AIR BRUSHES
There are also several air brushes available foruse with
your compressor. With these you can pinstripe, outline.
do stenciling, detailing on t-shirts, decoys, ceramics,
print banners and Signs and many other types of
detailed painting. Artists and hobbyists can find many
uses for air brushes.
POWER WASHER
The power washer works wellformany outside cleaning
jobs. It will help clean your home and siding as wellaS
your driveway and car. It can degrease car engines arid
tools. By adding foliage Spray, you can spray your
bushes and plants for Insects.
ETCHER/CLEANER
Used with your compact compressor you can decora-
tively etch wood or glass with the etcher/cleaner. It can
also be used to remove paint or rust from small engines
or metal tools,
DRAIN CLEANER
This item can be used to clean most household drains, It
keeps your hands out of the mess and comes with a
spleshback shield to protecl you.
OTHER ACCESSORIES
There are a variety of accessories available to make
using your compressor nluch easier. There are a variety
of sizes and types of hoses to suit any need, Quick
disconnects are available for ease of changing hoses
and accessories. Several types oli air fitters and
regulators can be purchased to make your compressor
more efficient.
These are just a few of the many uses and types of
equipment you can use. There are other tools and
accessories available that can be considered for use
with this compressor. Check the specifications on al!
tools and equipment before pumhasing and use-
CAULKING GUN
There is a handy toot for many common household jobs.
The caulking gun is excellent for caulking and glazing
around windows, bath tubs. window casements and wall
tile. It is also a handy tool for applying adhesives, such
as for dry wall application.
8
Page 9
TROUBLESHOOTING GUIDE
WAINING
F ,,,,,, ., i I
IIIIIIII
VOLTAGE SOURCES, MOVING PARTS, OR COMPRESSED AIR SOURCES ARE EXPOSED WHEN
REPAIRING THE COMPRESSOR. PERSONAL INJURY CAN OCCUR. UNPLUG THE COMPRES-
SOR AND BLEED OFF ALL AIR PRESSURE BY TURNING THE ADJUSTABLE PRESSURE VALVE
TO THE START POSITION BEFORE ATTEMPTING ANY REPAIRS.
I_EM "' i ,,,,,,,,, ,,,,,,,,,,,,,,,,,,, ,,11 ,,, i
PROB CAUSE CORRECTION
....... ,,,, i ,,,,,,,,,., ,,,,,, i ,,,,,,,,,,,ll
Air Leaks Hose firing loose, ,,,,,Tightentiffing, ,......................
, ,,,.., i i ,, ,,N.I ..................
Compressor is not deliver- Prolonged excessive use of air, Decrease the amount of air usage. Your com-
Ing _nough air_ pressor is not large enough for the air
requiremenL
Restricted air inta_ filter.
Clean or replace the air intake filter, (See page
7).
Hole in hose.
,.,,,.,,,.,,.,, ,,...._.............. ,ll, i ,,,,,,,,,,,,,,. .. ,,,.,
Air leaps. Tighten fittings.
I.l.l.l.l.l.l.l.l.l_trictedAir Intake Dirty air tilter. Clean or replace with new tilter. Do not oper-
,,, ,, ,, ,,
Compressor will not start Compressed air is in compres- Set the adjustable pressure valve knob at
sor pump, "Start" to relieve pressure before starting the
, ,,,,,i ,,,,,,, , ,q , ,,,i, ,, i ......................
Motor will not run Motor ovedoad protection switch Let motor cool off and the compressor will
has tripped, automatically re-starL
Fuse blown, circuit breaker
tripped.
Replace the hose.
air compressor. (See Operating Procedures
.on page 7.)
1. Check fuse box fOr blown fuse and replace
as necessary. Reset circuit breaker. Do not
use a fuse or circuit breaker with higher rating
than that specified for your particular branch
circuit.
2. Check for proper fuse. You should be using
a Time Delay fuse.
3. Check for low voltage problem. See the
"NOTE" on page 7 fOrdetails,
.i
High Discharge Pressure -
cannot be adjusted lower
4. Check the extension cord. See page 6 for
extension cord information.
5. Disconnect the other electrical appliances
from circuit or operate the compressor on its
own branch circuiL
Extension cord is wrong length Check the extension cord, See page 6 for
or gauge, extension cord information.
Loose electrical connections.
Check wiring connection inside terminal box
areB.
Faulty motor.
, ,,,, ,,
Have checked at a local Sears service center,
,,,,,, H i ..........
Adjustable pressure valve not
functioning.
1 WA, NING
RISK OF BURSTING. DO NOT OPERATE
THE COMPRESSOR IF THIS PROBLEM
EXISTS, ADJUSTABLE PRESSURE VALVE
MUST BE REPLACED.
9
Page 10
NR COMPRESSOR DIAGRAM
[
s
L
KEY
NO.
1
2
3
4
5
6
7
8
g
10
11
12
22
PARTNUMBER
LA-G25
SSF-8129-ZN
LA-1780-1
CAC-4259
SSW-7428
SST-S_
STDSt0807
SSN-S3
STD6108f0
21
PARTS LIST
mESCRFTION
Not used
Hot surfaea label
Locimut 1/,_-20 (2 used)
Not used
Warning label
Rear shroud assembly
Sears logo label -
not available
_(3 .sed)
Recess bumper (3 used)
Screw #8 AB x % LG
Rat washer (2 used)
Screw #8 ABx I LG
(=.ead)
KEY
NO.
13
14
lS
16
17
18
19
:0
21
22
23
24
25
17
PART NUMBER
SSW-_J67
SSS-lS
CAC-348-1
CAC-4252
CAC-4231
TIA-4378
LA-1787
SSF_131
CAC-3S2
1!-2102
LA-1786
LA-1789
14
15
16
DESCRIPTION
SWain relief
Switch
Terminal be0( cover
Cordmemb;y
Jumper wire
Adjustable pressure valve
Performance labal
Speednut (Sused)
Shroud - front
k_er
Maintenance label
Model No, label
Compressor eseeml_y-
Not available
!0
Page 11
KEY
NO.
PARTS LIST
PARTNUMBER
COMPRESSOR PUMP OIAGRAM
DESCRIPTION
26 CAC-280-2
27 CAC-1018
28
29
30 SSF-2043
31 SSF-6637
31A SSF-927
*,'n,'32 CAC-4234
33 CAC-245-1
SSF-98_!
35 CAC-251-2
36 CAC-38g
37 CAC-246-3
"_'_ 38 CAC.4203-1
39 SSG-8133
J" 40 CAC-4202
_" 41 CAC-249-1
42 MO-5421
43 CAC-4201
44 CAC-255-1
45 SSF-3101
Filter
Intake muffler
Not used
Not used
Set screw
Shoulder stud _':20 x 11/e"
(2used)
Screw %%20 x 11/8"
(2used)
Head essy.
Flapper valve intake
Screw #5-40 x _/4"
(3 used)
Gasket
Restrlntor
Flapper valve exhaust
Valve plate assy.
O-ring
Connecting rod assembly
Cylinder sleeve
MOtor % HP
ECcenb'Ic auembly
Fan
Screw #10-24 x %"
26
27
31A
NOT ILLUSTRATED
916163
9-16271
$1-30-09-2-C
Key 44, can only be purchased
as part of KK-4485 which
includes (1) SSF-3101 (Key 45).
_," Key 40, 41 can only be
purshased as part of
KK-4464 connecting
rod kit
_,'_" Key 32, Includes Iea. of Key 33 & 34
Key 30, includes Iea. of Key 34, 36 & 37
Hose assembly (_/,'x 15')
Air chuck
Owners Manual
42
43
44
11
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