Craftsman 919175261 Owner’s Manual
SEARS
OWNERS
MANUAL
MODEL NO.
919.175261
Usted
721Y
Air
Compressor
iMPORTANT:
Read the Safety Guidelines
and Al! instructions
Carefully Before Operating
AiR COIVIPRE= OR
ASSEMBLY
0PERATION
MAINTENANCE
REPAIR PARTS
ONE STAGE
Record in the spaces provided.
(1) The model number which can be found
on the label on the front of the air tank
saddle.
(2) The code number which can be found
on the foil label on the side of the air
tank.
(3) The Manufacturer's Number (ASME
Code Compressors only} is located on
the metal data plate which is welded
onto the side of the air tank. (This data
plate is painted the same color as the
tank.)
(4} The Motor Manufacturer's name which
is located on the motor label.
(5) The Motor Mfg. number - also located
on the motor _abel.
Retain these numbers for future refer-
once,
Model No.
Code No.
Mfg. No.
Motor Mfg. Name
[ 8t9
Motor Mfg. No.
Sears, Roebuck and Coo, Chicago, IL 60684 U.S.A,
Page
WARRANTY ........................................................................... 2
SAFETY GUIDELINES ............................................................... 3
WARNING CHART ................................................................... 3
SPECZFICATION CHART ........................................................... 5
GLOSSARY ............................................................................ 5
ACCESSORIES FOR USE WITH
SEARS AIR COMPRESSORS ................................................ 5
GENERAL INFORMATION ......................................................... 6
DESCRiPTiON OF OPERATION .................................................. 6
iNSTALLATION AND 8REAKqN PROCEDURES ............................ 6
Location of Air Compressor ................................................. 6
Piping .............................................................................. 7
Lubrication and Oil ............................................................. 7
Wiring _nstructions ............................................................. 7
Wiring Diagram .................................................................. 7
8reakqn Procedures ........................................................... 8
OPERATING PROCEDURES ....................................................... 8
MAINTENANCE ...................................................................... 8
Air Compressor ................................................................. 8
Air Filter - inspection and Replacement ................................. 8
Oil - Checking and Changing ............................................... 9
Air Tank - Draining Water ................................................... g
Check Vatve- Inspection and RepJacement ............................ 9
Safety Valve inspection ...................................................... £
Motor .............................................................................. 9
Belt - Replacement ............................................................. 9
PuJte¥ and Ftywheel - Alignment .......................................... I0
TROUBLESHOOTING GUIDE ..................................................... 10
AIR COMPRESSOR DIAGRAM .................................................. 12
Parts List .......................................................................... 13
COMPRESSOR PUMP D_AGRAM ............................................... 14
Parts List .......................................................................... 15
HOW TO ORDER REPAIR PARTS ............................................... 16
FULL ONE YEAR WARRANTY
ON AiR COMPRESSORS
8fthis air compressor fai_sdue to a defect in materia_or workmanship whhin one year from the date of purchase, return
it to the nearest Sears Service Center/Department throughout the United States and Sears will repair it, free of charge.
This warrant,/gives you specific legal rights and you may have other rights that vary from state to state.
Sears, Roebuck and Co., Sears Tower, Dept. 698!731CR-2_ Chicago, _L 60684
Thismanualcontainsinformation that is important for you to kno_v and understand. This
information relates to protecting your safety and preventing equipmenlt problems. To help you
recognize this information, we use the following symbols. Please read the manuat end pay special
attention to sections headed by these symbo!so
iMPORTANT SAFETY iNFORMATiON o A
HAZARD THAT MIGHT CAUSE SERIOUS
iNJURY OR LOSS OF LIFE.
HAZARDS CAN OCCUR iF EQUIPMENT 1S NOT USED PROPERLY.
PLEASE READ THE FOLLOWING CHART.
WHAT TO
LOOK FOR WHAT COULD HAPPEN
Hot Parts
Flammable
Vapors
The compressor head and tubes get hot when
the air compressor is running, if you touch them,
you can be seriously burned.
It is normal for the motor's electrical contacts
and pressure switch contacts to spark when the
compressor starts or stops. A spark can ignite
flammable vapors from gasoline, flammable paints
or solvents, causing an explosion or fire.
Information for preventing damage to equip-
ment.
NOTE
Information that you should pay special at-
tention to.
HOW TO PREVENT IT
Never touch the air compressor head or tubes
during or immediately after operation.
Operate the compressor in well ventilated
areas that are free of gasoline, flammable paint
or solvent vapors.
if spraying a flammable material - provide
ample ventilation. Never spray in aclosed area.
There must be a flow of fresh air at all times.
Do not operate the compressor in the spray
area.
Unsuitable
Solvents
Compressed Air
The soJvents 1,1,1-Trichlorethane and Methyl-
ene Ch!oride can chemically react with amumi-
num used in paint spray guns, paint pumps, etc.
and cause an explosion. These solvents can also
react with galvanized components and cause
corrosion and weakening of parts. This does not
affect your air compressor - but it may affect the
equipment being used.
Compressed air can propel dust, dirt or tease
particles it comes in contact with.
Too much airpressure appliedto airtoo_sor
accessoriescan cause damage or riskof burst-
_ng.
if the material you intend to spray contains the
solvents listed at left (read the label or data
sheet}, do not use accessories that contain
aluminum or galvanized parts. You must either
change the material you intend to spray, or use
only stainless steel spray equipment.
Never point any nozzle or sprayer toward a
person or any partof the body.
AEways wear safety goggles or g!ssses when
using the air compressor.
Always turn the air compressor off and release
a}r pressure from hose before attaching or
removing accessories.
Check the manufacturer's maximum pressure
rating for tools and accessories. The regulator
outte_ pressure must never exceed the maxi-
mum pressure rating.
WHAT TO
LOOK FOR
WHAT COULD HAPPEN HOW TO PREVENT IT
Electricity
Moving Parts
Toxic Vapors
Your air compressor is powered by eiectricityo
Like any othar eJectricaiJy powered device, if it is
not used proper_y it can cause electrical shock.
This compressor cycles automatically when the
switch is in the "On-Auto" position, if you
attempt repair or maintenance while the com-
pressor is operating, or with the switch in the
"On-Auto" position you can expose yourself to
moving parts. These moving parts can cause
serious injury or damage if they coma into
contact with you or your cgothing.
It is normal for compressed air to contain toxic or
irritatingvapors. Such vapors are harmful if
inhaJed.
Certain materials you are spraying (like paint,
weed killer, sand or insecticide) can be harmful
if you inhate them.
Always turn off and lock out electrical power
3riot to maintenance or repair.
Wiring of the pressure switch, motor and On/
Off switch should be done by a licensed elec-
trician in accordance with national and local
codes.
Always turn off and lock out power before
repair or maintenance.
Never operate the compressor with the belt
guard removed.
Never diractJy inhale the compressed air pro-
duced by this unit.
Read labels and safety data for aHmaterials you
spray. Follow atl safety precautions.
Use a mask or respirator if there is a chance of
inhaling toxic sprayed materials. Masks and
respirators have limits and will only provide
protection against some kinds and limited
amounts of toxic material. Raad mask and
respirator instructions carefultyo Consult with a
safety expert or industrial hygienist if you are
not svre about the use of a certain mask or
respirator.
Air Tank
Vibration
Modifications to the air compressor can cause
the air tank to rupture or explode.
Changing the air tank will cause it to weaken.
The tank can rupture or explode.
If your compressor is not properiy anchored it
will vibrata. Excessive vibration can cause tank
rupture or explosion.
Do not adjust, remove or tamper with the
safety valve or pressure switch, if safety valve
or pressure switch replacement is necessary, a
_art with the same pressure rating must be
used.
Never usa a motor with a higher horsepower
rating than the one supplied.
Do not substitute a gas engine for the
motot...this compressor was not designed to
ba powered by a gasomina engine.
Never replace the compressor pump with a
different model
Never increase the compressor pump speed.
Never drill into, weld, or in any way modify the
air tank. Do not repair a leaking tank; it must be
rapmacad.
Never replace the air tank with a different
model or a larger tank.
Make sure your sir compressor is bolted to the
floor. Sea "Location of the Air Compressor" in
this manual.
SPECIFICATION CHART J
Model No.
Horsepower
Displacement CFM at Max. Pressure
Bore
Stroke
Voltage - Single Phase
Minimum Branch Circuit Requirement
•Fuse Type
Amperage at Max. Pressure
Air Tank Capacity - Gallons
Approximate Cut-in Pressure
Approximate Cut-out Pressure
SCFM @!25 psig
SCFM @ 90 psig
SCFM @ 40 psig
UL Usted
•A circuit breaker is preferred. Use only a fuse or circuit breaker that is the same rating as the branch circuit
the air compressor is operated on.
i
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.
GLOSSARY
Cut-Out Pressure: When you turn on your air com-
pressor 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 airtank from pressure higher than its
capacity. The high pressure at which the motor shuts
off is called "cut-out pressure."
919.175261
6
15
2 7/8
2"
220
20 amp
Fusetron Type "T"
15
60 gal ASME
100 psig
125 psig
9.2
10.2
12.5
Yes
I
ASME: American Society of Mechanical Engineers;
made, tested, inspected and registered to meet the
standards of the ASME.
UL Listed: Underwriters Laboratories; samples of
compressor outfits taken from production were sub-
mitted to UL and found to comply with their require-
ments for design and performance.
Cut-In Pressure: While the motor is off, air tank
pressure drops as you continue to use your acces-
sory. When the tank pressure drops to a certain low
level the motor will re-start automatically. The low
pressure at which the motor automatically re-starts
is called "cut-in pressure."
To Lock-Out Power: Place a lock on the line power
switch so no one else can turn on the power.
:ESSORIES FOR USE WITH SEARS AIR COMPRESSORS
The following accessories are available
SPRAY GUNS • PAINT TANKS • AiR TOOLS
• BLOW GUNS • AIR TANKS Sanders
• AIR CAULKING GUNS • iNFLATOR KITS Drills
• AIR POWERED WASHER GUNS • QUICK CONNECTOR SETS Impact Wrenches
• SAND BLASTERS (various sizes) Hammers
• AIR BRUSHES • VISCOSIMETER ® AiR HOSE:
• AIR LINE FILTERS • AIR PRESSURE REGULATORS 1/4", 5t16" OR 3/8" I.D.
• TIRE AIR CHUCKS = OIL FOG LUBRICATORS in various lengths
through the current general sales catalog or at full-line Sears stores.
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