Craftsman 921166360 Owner’s Manual
Owner's Manual
AiR COMPRESSOR
5-gallon
1HP
Oil-Lubricated, Direct Drive
Model No. 921.1 66360
FILL WITH OIL BEFORE USE.
CAUTION:
Before using this product,
read this manual and follow
all its Safety Rules and
Operating Instructions.
,, Safety Instructions
,, Installation & Assembly
,, Operating Procedures
,, Maintenance & Storage
,, Troubleshooting Guide
,, Parts List
,, Espaffoi, p. 13
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.
WWW.Seal_S.com
12/14/2006
Part No. E102348
Table of Contents
Page
Warranty .............................................................. See Below
Safety Symbols .......................................................... 1
Important Safety Instructions & Guidelines ..................................... 1
Specifications ............................................................ 2
Glossary ................................................................ 2
Duty Cycle .............................................................. 2
Parts & Features ......................................................... 3
Installation & Assembly .................................................... 4
Operating Procedures ..................................................... 5
Detaching Unit from Dolly .................................................. 6
Maintenance ............................................................. 6
Storage ................................................................ 6
Troubleshooting Guide ..................................................... 7
Exploded View ........................................................... 8-9
Parts List ............................................................... 10-11
Espafiol ................................................................ 13
ONE YEAR FULL WARRANTY
If this Craftsman product fails due to a defect in material or workmanship within one year from the
date of purchase, return it to any Sears store, Sears Service Center, or other Craftsman outlet for
free repair (or replacement if repair proves impossible).
This warranty applies for only 90 days from the date of purchase if this product is ever used for
commercial or rental purposes.
This warranty gives you specific legal rights, and you may also have other rights which vary from
state to state.
Sears, Roebuck and Co, Hoffman Estates, IL 60179
Safety Symbols
The information listed below should be read and understood by the operator. This information is given to protect the
user while operating and storing the air compressor. We utilize the symbols below to allow the reader to recognize important
information about their safety.
Indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.
Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury
Indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury.
When used without the safety alert symbol indicates a
potentially hazardous situation which, if not avoided, may
result in property damage.
important Safety instructions and Guidelines
- Save all instructions
Improper operation or maintenance of this product could result in serious injury and/or property damage. Read and
understand all of the warnings and safety instructions provided before using this equipment.
The air compressor should be operated on a dedicated 15 amp circuit. If the circuit does
not have 15 free amps available, a larger circuit must be used. Always use more air
hose before utilizing extension cords. All extension cords used must be 12 gauge with a
maximum length of 25 ft. The circuit fuse type must be a time delay. Low voltage could
cause damage to the motor.
Risk of Moving Parts
I
I
1
1
1
1
Risk of Burns
Risk of Falling
Risk from Flying Objects
If the air compressor is in operation, all guards and covers should be attached or
installed correctly. If any guard or cover has been damaged, do not operate the
equipment until the proper personnel has correctly repaired the equipment. The power
cord should be free of any moving parts, twisting and/or crimping while in use and while
in storage.
There are surfaces on your air compressor that while in operation and thereafter can
cause serious burns if touched. The equipment should be allowed time to cool before
any maintenance is attempted. Items such as the compressor pump and the outlet tube
are normally hot during and after operation.
Operation of the air compressor should always be in a position that is stable. Never use
the air compressor on a rooftop or elevated position that could allow the unit to fall or
be tipped over. Use additional air hose for elevated jobs.
Always wear ANSt Z87.1 approved safety glasses with side shields when the air
compressor is in use. Turn off the air compressor and drain the air tank before
performing any type of maintenance or disassembly of the hoses or fittings. Never point
any nozzle or sprayer toward any part of the body or at other people or animals.
Important Safety Instructions & Guidelines
Risk of Breathing
Risk of
Electrical Shock
Risk of
Explosion or Fire
Risk of Bursting
!
Avoid using the air compressor in confined areas. Always have adequate space
(12 inches) on all sides of the air compressor. Also keep children, pets, and others out of
the area of operation. This air compressor does not provide breathable air for anyone or
any auxiliary breathing device. Spraying material will always need to be in another area
away from the air compressor to not allow intake air to damage the air compressor filter.
Never utilize the air compressor in the rain or wet conditions. Any electrical issues or
repairs should be performed by authorized personnel such as an electrician and should
comply with all national and local electrical codes. The air compressor should also have
the proper three prong grounding plug, correct voltage, and adequate fuse protection.
Never operate the compressor near combustible materials, gasoline or solvent vapors.
If spraying flammable materials, locate the air compressor at least 20 feet away from the
spray area. Never operate the air compressor indoors or in a confined area.
Always drain the air compressor tank daily or after each use. If the tank develops a leak,
then replace the air compressor. Never use the air compressor after a leak has been
found or try to make any modifications to the tank. Never modify the air compressor's
factory settings which control the tank pressure or any other function.
Specifications
Pump .......................... Oil-lube direct drive Air Tank Capacity ......................... 5 Gallons
Motor ............................ 1.0 HP (induction) Cut-in Pressure ............................. 95 PSI
Bore ....................................... 1.65" Cut-out Pressure ........................... 125 PSI
Stroke ...................................... t.26" SCFM @ 90 PSi................................ 2.4
Voltage Single Phase ....................... 120 VAC Oil Capacity ......................... 90 mL or 3 oz.
Minimum Circuit Requirement ................ 15 Amps Oil Type ........................ SAE 30 Non-detergent
Glossary
SCFM: Standard cubic feet per minute; a unit of measure
for air delivery.
PSlG: Pounds per square inch gauge; a unit of measure
for pressure.
ASME: American Society of Mechanical Engineers.
California Code: Unit may comply with California Code
462 (I) (2)/(M) (2).
Cut=In Pressure: The air compressor will automatically
start to refill the tank when the pressure drops
below the prescribed minimum.
Cut=Out Pressure: The point at which the motor stops
when the tank has reached maximum air
pressure.
Code Certification: Products that bear one or more of
the following marks: UL, ULc, ETL, CSA, have
been evaluated by OSHA-certified independent
safety laboratories and meet the applicable
Underwriters Laboratories Standards for Safety.
Duty Cycle
This is a 50% duty cycle air compressor.
could damage the air compressor.
Do not run the air compressor more than 30 minutes of one hour. Doing so
2
Parts & Features
See figures below for reference.
When the pump is not in operation the valve closes t
retain air pressure inside the tank. An internal |
I Check Valve o'_
component.
Offers a quick release feature for
I Quick Connect
attaching and removing the air hose.
Indicates the outgoing air pressure to the tool and is
I Regulator Gauge
controlled by the regulator.
I Regulator "_
The air pressure coming from the air tank is controlled I
by the regulator. To increase the pressure turn the r_
knob clockwise and to decrease the pressure turn the
knob counterclockwise.
J
f
Tank Pressure Gauge
Indicates the reserve air pressure
in the tank.
Tank Safety Valve
Used to allow excess tank pressure to escape into
the atmosphere. This valve should only open when
the tank pressure is above the maximum rated
pressure.
Pressure Switch
On/Auto/Off Lever: Turn this lever to On/Auto to provide
power to the pressure switch. Turn lever to Off when
compressor is no longer in use.
Pressure Switch: The pressure switch 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 Relief Valve
The pressure relief valve located on the side of the
pressure switch, is designed to automatically
release compressed air when the air compressor
reaches cut-out pressure. The released air should
only escape momentarily and the valve should then
close.
Pressure Relief
Air Intake Filter
Provides clean air to the pump and must always be
kept free of debris. Check on a daily basis or before
each use.
Tank Drain Valve
Used to drain condensation from the air tank.
Located at bottom of tank.
Installation & Assembly
The air compressor should be turned off, unplugged from
the power source, the air bled from the tank and the unit
allowed time to cool before any maintenance is performed.
Personal injuries could occur from moving parts, electrical
sources, compressed air or hot surfaces. The quick connect
assembly must be attached before use. Failure to assemble
correctly could result in leaks and possible injury. If unsure
of assembly instructions or you experience difficulty in the
assembly please contact your local authorized Sears or
another qualified service dealer.
Assembly
1. Remove air compressor, oil bottle, intake filter, manual
and accessories from the styrofoam.
2. Remove the plastic plug from the compressor intake
port. (see diagram below)
3. Install the filter in the compressor intake port.
(see diagram below)
4. Remove the oil fill cap from the crankcase and fill until
the oil reaches the top of the red dot in the sight glass.
Oil capacity is 3 oz. (seebelow)Use SAE-30 non-
detergent (APt CG/CD heavy duty motor oil). Under
extreme cold weather conditions, 32° F (0°C) or below,
use SAE-10 weight oil.
5. Replace the oil cap.
6. Check to ensure that unit is mounted securely to the
dolly before transporting. (seepage 6)
all local codes and ordinances. Check with a qualified
electrician or service personnel if these instructions are not
completely understood or if in doubt as to whether the tool
is properly grounded.
Grounded
Outlet
Grounding Pin
Improper installation of the grounding plug will result in a
risk of electric shock, tf repair or replacement of the cord
or plug is necessary, do not connect the grounding wire to
either flat blade terminal. The wire with insulation having an
outer surface that is green with or without yellow stripes is
the grounding wire. Check with a qualified electrician or
serviceman if the grounding instructions are not completely
understood, or if in doubt as to whether the product is
properly grounded. Do not modify the plug provided.
If it will not fit the outlet, have the proper outlet installed
by a qualified electrician.
This product is for use on a circuit having a nominal rating
of 120 volts and is factory-equipped with a specific electric
cord and plug to permit connection to a proper electric
circuit. Make sure the product is connected to an outlet
having the same configuration as the plug. An adapter
should not be used with this product, tf the product must
be reconnected for use on a different type of electric circuit,
qualified service personnel should make the reconnection.
Estimated Assembly Time: Approximately 5 minutes
Getting Started - Location of the Air Compressor
The air compressor should always be located in a clean,
dry and well ventilated environment. The unit should have
at minimum, 12 inches of space on each side. The air filter
intake should be free of any debris or obstructions.
Check the air filter on a daily basis to make sure it is clean
and in working order.
Grounding Instructions
This product should be grounded. In the event of an electrical
short circuit, grounding reduces the risk of electric shock by
providing an escape wire for the electric current.
This product is equipped with a cord having a grounding
wire with an appropriate grounding plug. (See the figure at
top right corner.) The plug must be plugged into an outlet
that is properly installed and grounded in accordance with
Extension Cords
Use only a 3-wire extension cord that has a 3-blade
grounding plug and a 3-slot receptacle that will accept the
plug on the product. Make sure your extension cord is in
good condition. When using an extension cord, be sure to
use one heavy enough to carry the current your product will
draw. Cords must not exceed 25 feet and No. 12 AWG size
must be used. An undersized cord will cause a drop in line
voltage resulting in loss of power and overheating.
Break In Procedures
No break in procedure is required by the user.
This product is factory tested to ensure proper operation and
performance.
Operating Procedures
Daily Start=Up Procedures
1. Set the Auto-On/Off lever to the Off position.
2. Inspect the air compressor, air hose, and any
accessories/tools being used for damage or obstruction.
If any of these mentioned itemsare in need of repair/
replacement, contact your local authorized Sears or
another qualified service dealer.
3. Close the drain valve.
4. Check the oil level of the pump.
5. Connect the air hose to the quick connect socket on
the regulator assembly by inserting the quick connect
plug on the air hose into the quick connect socket. The
quick connect socket collar will snap forward and lock
the plug into place providing an air tight seal between
the socket and plug. To release the air hose push the
collar back on the quick connect socket.
6. Plug the power cord into the proper receptacle.
7. Turn the Auto-On/Off lever to the On-Auto position and
the compressor will start and build air pressure in the
tank to cut-out pressure and then shut off automatically.
8. Adjust the regulator to a PSI setting that is needed for
your application and be sure it is within the safety
standards required to perform the task. If using a
pneumatic tool, the manufacturer should have
recommendations in the manual for that particular
tool on operating PSI settings.
9. The air compressor is now ready for use. The following
inflation and cleaning accessories packaged with this
unit should only be operated at maximum pressure
of 90PSI: blow gun, rubber-tapered nozzle, inflation
needles, adapter, and blow gun adapter.
Daily Shut=Down Procedures
1. Set the Auto-On/Off lever to the Off position.
2. Unplug the power cord from the receptacle.
3. Set the outlet pressure to zero on the regulator.
4. Remove any air tools or accessories. Always use
approved ear and eye protection.
5. Open the drain valve allowing air to bleed from the
tank. After all of the air has bled from the tank, close
the drain valve to prevent debris buildup in the valve.
When draining the tank, always use ear and eye protection.
Drain the tank in a suitable location; condensation will be
present in most cases of draining.
Water that remains in the tank during storage will corrode
and weaken the air tank which could cause the tank to
rupture. To avoid serious injury, be sure to drain the tank
after each use or daily.
Detaching unit from dolly
Do not use the dolly for any other means other than transporting this air compressor.
Do not move air compressor/dolly combo without tightening the knob that safely secures the compressor to the dolly.
Removing the air compressor from the dolly:
1. Turn off the compressor and unplug it from the power
source.
2. Turn the knob on the bottom of the dolly counter-
clockwise, (as viewed from the bottom), until the knob
releases from the air compressor. (This should be 1-2
revolutions)
3. While holding the dolly cart handle with one hand,
lift up on the air compressor handle to remove the
compressor.
Attaching the air compressor to the dolly:
1. Turn off the compressor and unplug it from the power
source.
2. Align the compressor's rubber isolators with the
depressions in the dolly frame.
3. Insert knob bolt into the air compressor and rotate
clock-wise, (as viewed from the bottom), until tight.
(If the compressor is not properly aligned onto the
frame the knob will not tighten. Reposition compressor
and try again.)
Maintenance
NOTE: Any service procedure not covered in the
maintenance schedule should be performed by qualified
service personnel. Contact your local authorized Sears
or another qualified service dealer.
The air compressor should be turned off, unplugged from
the power source, air bled from the tank and allowed
time to cool before any maintenance is performed.
To ensure efficient operation and longer life of the air
compressor unit, a routine maintenance schedule should
be followed. The following schedule is geared toward
a consumer whose compressor is used in a normal
working environment on a daily basis.
Storage
For storing the air compressor, be sure to do the following:
1. Turn the unit off and unplug the power cord from the
receptacle.
2. Remove all air hoses, accessories, and air tools from
the air compressor.
3. Perform the daily maintenance schedule.
Items to Check/Change
Check Tank Safety Valve
Overall Unit Visual Check
Check Air Filter
Drain Tank
Check Power Cord for Damage
Change Oil
Check Oil Level
4. Open the drain valve to bleed all air from the tank.
5. Close the drain valve.
6. Store the air compressor in a clean and dry location.
Before each use
or daily
X
X
X
X
X
after first 50 hours
after every 100 hours
X
Troubleshooting Guide
The air compressor should be turned off and unplugged from the power source before any maintenance
is performed as well as the air bled from the tank and the unit allowed time to cool. Personal injuries
could occur from moving parts, electrical sources, compressed air, or hot surfaces.
PROBLEM POSSIBLE CORRECTION
Air leaks at the check valve A defective check valve results in a constant air leak at the pressure relief valve
or at the pressure relief valve, when there is pressure in the tank and the compressor is shut off. Drain the tank,
then remove and clean or replace the check valve.
Air leaks between head and Be sure of proper torque on head bolts. If leak remains, contact a service technician.
cylinder.
Air leak from safety valve. Operate the safety valve manually by pulling on the ring. If the valve continues to
leak when in the closed position, it should be replaced.
Pressure reading on the
regulated pressure gauge
drops when an accessory is
used.
Excessive tank pressure.
Motor will not start.
Excessive moisture in the
discharge air.
If there is an excessive amount of pressure drop when the accessory is used,
replace the regulator.
Adjust the regulated pressure under flow conditions (while accessory is being used).
It is normal for the gauge to show minimal pressure loss during initial use of the
tool.
Move the Auto-On/Off lever to the Off position. If the unit doesn't shut off, unplug it
from the power source and contact a service technician.
Make sure power cord is plugged in and the switch is on. Inspect for the proper size
fuse in your circuit box. If the fuse was tripped, reset it and restart the unit. tf
repeated tripping occurs, replace the check valve or contact a service technician.
Remove the water in the tank by draining after each use. High humidity
environments will cause excessive condensation. Utilize water filters on your air
line.
Air leaks from the tank body
or tank welds.
Water condensation is not caused by compressor malfunction. Be sure the
compressor's air output is greater than your tool's air consumption rate.
Never drill into, weld or otherwise modify the air tank or it will weaken. The tank can
rupture or explode. Compressor cannot be repaired. Discontinue use of the air
compressor.
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