CRAFTSMAN 919.167780 Oil-Less Air Compressor User Manual

Operators Manual
Permanently Lubricated
2-Stage
Twin V Portable
AIR COMPRESSOR
Model No. 919.167780

CAUTION: Read the Safety Guidelines and All Instructions Carefully Before Operating.

FULL ONE YEAR WARRANTY
AIR COMPRESSOR
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 REPAIR CENTER THROUGHOUT THE UNITED STATES AND SEARS WILL REPAIR IT, FREE OF CHARGE. If purchased from Orchard Supply Hardware, return it to the nearest Orchard Store and Orchard will repair it, free of charge.
If this 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 specific legal rights and you may have other rights which vary from state to state. Sears, Robebuck and Co., Deptr. 817WA, Hoffman Estates, Il 60170

SAFETY GUIDELINES – DEFINITIONS

 SAFETY and PREVENTING EQUIPMENT PROBLEMS. To help you recognize this information, we use the symbols below. Please read the manual and pay attention to these sections.

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.
Used without the safety alert symbol indicates a potentially hazardous situation which, if not avoided, may result in property damage.

IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS

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

RISK OF EXPLOSION OR FIRE

IT IS NORMAL FOR ELECTRICAL CONTACTS WITHIN THE MOTOR AND PRESSURE SWITCH TO SPARK.| ALWAYS OPERATE THE COMPRESSOR IN A WELL-VENTILATED AREA FREE OF COMBUSTIBLE MATERIALS, GASOLINE OR SOLVENT VAPORS.
IF ELECTRICAL SPARKS FROM THE COMPRESSOR COME INTO CONTACT WITH FLAMMABLE VAPORS, THEY
MAY IGNITE, CAUSING FIRE OR EXPLOSION.| IF SPRAYING FLAMMABLE MATERIALS, LOCATE THE COMPRESSOR AT LEAST 20 FEET
AWAY FROM THE SPRAY AREA.  AN ADDITIONAL LENGTH OF THE HOSE MAY BE REQUIRED. STORE FLAMMABLE MATERIALS IN A SECURE LOCATION AWAY FROM THE COMPRESSOR.
RESTRICTING ANY OF THE COMPRESSOR VENTILATION OPENINGS WILL CAUSE SERIOUS OVERHEATING AND
COULD CAUSE FIRE.| NEVER PLACE OBJECTS AGAINST OR ON TOP OF THE COMPRESSOR. 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. OPERATE THE COMPRESSOR IN A CLEAN, DRY, WELL-VENTILATED AREA. DO NOT OPERATE UNIT INDOORS OR IN ANY CONFINED AREA.
UNATTENDED OPERATION OF THIS PRODUCT COULD RESULTING IN PERSONAL INJURY OR PROPERTY DAMAGE.| ALWAYS REMAIN IN ATTENDANCE WITH THE PROD- UCT WHEN IT IS OPERATING.

HAZARD

RISK OF BURSTING

AIR TANK: THE FOLLOWING CONDITIONS COULD LEAD TO A WEAKENING OF THE TANK, AND RESULT IN A VIOLENT TANK EXPLOSION, AND COULD CAUSE PROPERTY DAMAGE OR SERIOUS INJURY.

1. FAILURE TO PROPERLY DRAIN CONDENSED WATER  FROM THE TANK, CAUSES RUST AND THINNING OF THE STEEL TANK.
2. MODIFICATIONS OR ATTEMPTED REPAIRS TO THE TANK.
3. UNAUTHORIZED MODIFICATIONS TO THE UNLOADER  VALVE, SAFETY VALVE, OR ANY OTHER COMPONENTS WHICH CONTROL THE TANK PRESSURE.
4. EXCESSIVE VIBRATION CAN WEAKEN THE AIR TANK AND CAUSE RUPTURE OR EXPLOSION.| DRAIN TANK DAILY OR AFTER EACH USE. IF THE TANK DEVELOPS A LEAK, REPLACE IT IMMEDIATELY WITH A NEW TANK OR REPLACE THE ENTIRE COMPRESSOR. NEVER DRILL INTO, WELD, OR MAKE ANY MODIFICATIONS TO THE TANK OR ITS ATTACHMENTS. THE TANK IS DESIGNED TO WITHSTAND SPECIFIC OPERATING PRESSURES. NEVER MAKE ADJUSTMENTS OR PARTS SUBSTITUTIONS TO ALTER THE FACTORY SET OPERATING PRESSURES.
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 (IF NOT EQUIPPED) OF YOUR COMPRESSOR. FOLLOW THE EQUIPMENT MANUFACTURER’S RECOMMENDATION AND  NEVER EXCEED THE MAXIMUM ALLOWABLE PRESSURE RATING OF ATTACHMENTS. NEVER USE A COMPRESSOR TO INFLATE SMALL LOW-PRESSURE OBJECTS SUCH AS CHILDREN’S TOYS, FOOTBALLS, BASKETBALLS, ETC.

RISK FROM FLYING OBJECTS

THE COMPRESSED AIR STREAM CAN CAUSE SOFT TISSUE DAMAGE TO EXPOSED SKIN AND CAN PROPEL DIRT, CHIPS, LOOSE PARTICLES, AND SMALL OBJECTS
AT HIGH SPEED, RESULTING IN PROPERTY DAMAGE OR PERSONAL INJURY.| 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.

HAZARD
RISK OF ELECTRICAL SHOCK

YOUR AIR COMPRESSOR IS POWERED BY ELECTRICITY. LIKE ANY OTHER ELECTRICALLY POWERED DEVICE, IF IT IS NOT USED PROPERLY IT MAY CAUSE
ELECTRIC SHOCK. REPAIRS ATTEMPTED BY UNQUALIFIED PERSONNEL CAN RESULT IN SERIOUS INJURY OR DEATH BY ELECTROCUTION.
ELECTRICAL GROUNDING:  FAILURE TO PROVIDE ADEQUATE GROUNDING TO THIS PRODUCT COULD RESULT IN SERIOUS INJURY OR DEATH FROM ELEC-
TROCUTION.  SEE GROUNDING INSTRUCTIONS.| NEVER OPERATE THE COMPRESSOR OUTDOORS WHEN IT IS RAINING OR IN WET CONDITIONS. NEVER OPERATE THE COMPRESSOR WITH PROTECTIVE COVERS REMOVED OR DAMAGED. ANY ELECTRICAL WIRING OR REPAIRS REQUIRED ON THIS PRODUCT SHOULD BE PERFORMED BY AN AUTHORIZED SERVICE CENTER PERSONNEL IN ACCORDANCE WITH NATIONAL AND LOCAL ELECTRICAL CODES. MAKE CERTAIN THAT THE ELECTRICAL CIRCUIT TO WHICH THE COMPRESSOR IS CONNECTED PROVIDES PROPER ELECTRICAL GROUNDING, CORRECT VOLTAGE, AND ADEQUATE FUSE PROTECTION.

RISK TO BREATHING

THE COMPRESSED AIR DIRECTLY FROM YOUR COMPRESSOR IS NOT SAFE FOR
BREATHING. THE AIRSTREAM
IT MAY CONTAIN CARBON MONOXIDE, TOXIC VAPORS, OR SOLID PARTICLES
FROM THE TANK. BREATHING THESE CONTAMINANTS CAN CAUSE
SERIOUS INJURY OR DEATH.| AIR OBTAINED DIRECTLY FROM THE COMPRESSOR SHOULD NEVER BE USED TO SUPPLY AIR TO HUMAN CONSUMPTION. IN ORDER TO USE AIR PRODUCED BY THIS COMPRESSOR FOR BREATHING, SUITABLE FILTERS, AND IN-LINE SAFETY EQUIPMENT MUST BE PROPERLY INSTALLED. IN-LINE FILTERS AND SAFETY EQUIPMENT USED IN CONJUNCTION WITH THE COMPRESSOR MUST BE CAPABLE OF TREATING AIR TO ALL
APPLICABLE LOCAL AND FEDERAL CODES PRIOR TO HUMAN CONSUMPTION.
SPRAYED MATERIALS SUCH AS PAINT, PAINT SOLVENTS, PAINT REMOVER, INSECTICIDES, AND WEED KILLERS, CONTAIN HARMFUL VAPORS AND POISONS.| WORK IN AN AREA WITH GOOD CROSS-VENTILATION.
READ AND FOLLOW THE SAFETY INSTRUCTIONS PROVIDED ON THE LABEL OR SAFETY DATASHEETS FOR THE MATERIAL YOU ARE SPRAYING. USE A NIOSH/MSHA-APPROVED RESPIRATOR DESIGNED FOR USE WITH YOUR SPECIFIC APPLICATION.

RISK OF BURNS

TOUCHING EXPOSED METAL SUCH AS THE COMPRESSOR HEAD OR OUTLET TUBES,
CAN RESULT IN  SERIOUS BURNS.| NEVER TOUCH ANY EXPOSED METAL PARTS ON THE COMPRESSOR DURING OR IMMEDIATELY AFTER OPERATION. THE COMPRESSOR WILL REMAIN HOT FOR SEVERAL MINUTES AFTER OPERATION. DO NOT REACH AROUND PROTECTIVE SHROUDS OR ATTEMPT MAINTENANCE UNTIL THE UNIT HAS BEEN ALLOWED TO COOL.

RISK FROM MOVING PARTS

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 ATTEMPTS TO REPAIR
COMPRESSORS WITH PROTECTIVE SHROUDS REMOVED CAN EXPOSE YOU TO MOVING PARTS AND CAN RESULT IN SERIOUS INJURY.| NEVER OPERATE THE COMPRESSOR WITH GUARDS OR COVERS THAT ARE DAMAGED OR REMOVED. ANY REPAIRS REQUIRED ON THIS PRODUCT SHOULD BE PERFORMED BY AUTHORIZED SERVICE CENTER PERSONNEL.

RISK OF FALLING

A PORTABLE COMPRESSOR CAN FALL FROM A TABLE, WORKBENCH, OR ROOF CAUSING DAMAGE TO THE
COMPRESSOR AND COULD RESULT IN SERIOUS INJURY OR DEATH TO THE OPERATOR.| ALWAYS OPERATE THE COMPRESSOR IN A STABLE SECURE POSITION TO PREVENT ACCIDENTAL MOVEMENT OF THE UNIT. NEVER OPERATE THE COMPRESSOR ON A ROOF OR OTHER ELEVATED POSITION. USE ADDITIONAL AIR HOSE TO REACH HIGH
LOCATIONS.

RISK OF PROPERTY DAMAGE WHEN TRANSPORTING COMPRESSOR
(Fire, Inhalation, Damage to Vehicle Surfaces)
For units requiring oil in pump or gasoline engines

OIL CAN LEAK OR SPILL AND COULD RESULT IN FIRE OR BREATHING HAZARDS, SERIOUS INJURY, OR DEATH CAN RESULT.  OIL LEAKS WILL DAMAGE CARPET, PAINT
OR OTHER SURFACES IN VEHICLES OR TRAILERS.| ALWAYS PLACE THE COMPRESSOR ON A PROTECTIVE MAT WHEN TRANSPORTING TO PROTECT AGAINST DAMAGE TO VEHICLE FROM LEAKS. REMOVE THE COMPRESSOR FROM THE VEHICLE IMMEDIATELY UPON ARRIVAL AT YOUR DESTINATION.

GLOSSARY

Become familiar with these terms before operating the unit.
CFM: Cubic feet per minute.
SCFM: Standard cubic feet per minute; a unit of measure of air delivery.
PSIG: Pounds per square inch gauge; a unit of measure of pressure.
ASME: American Society of Mechanical Engineers; made, tested, inspected, and registered to meet the standards of the ASME.
Code Certification : Products that bear one or more of the following marks: UL, CUL, ETL, CETL, have been evaluated by OSHA-certified independent safety laboratories and meet the applicable Underwriters Laboratories Standards for Safety.
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 the factory set low pressure the motor will restart automatically. The low pressure at which the motor automatically restarts is called “cut-in” pressure.
Cut-Out Pressure: When an air compressor is turned on and begins to run, air pressure in the air tank begins to build. It builds to a factory set high pressure before the motor automatically shuts off protecting your air tank from pressure higher than its capacity. The high pressure at which the motor shuts off is called “cut-out”  pressure.Branch Circuit: Circuit carrying electricity from electrical panel to outlet.

ACCESSORIES

This unit is capable of powering the following Accessories. The accessories are available through the current Power and Hand Tool Catalog or full-line Sears stores.

Accessories

• In Line Filter
• Tire Air Chuck
• Quick Connector Sets (various sizes)
• Air Pressure Regulators
• Oil Fog Lubricators
• Air Hose: 1/4″, 3/8″ or 1/2″ I.D. in various lengths

Specialty Tools

• Inflating/Blow Gun
• Grease Gun
• Caulk Gun
• Engine Cleaner
• Sand Blaster

Carpentry Tools

• Finishing Nailer / Stapler
• Construction Nailer /Stapler

Socket Driving

• 1″ Impact Wrench
• 3/4″ Impact Wrench
• 1/2″ Impact Wrench
• 3/8″ Impact/Butterfly Wrench
• 1/2″ Ratchet
• 3/8″ Ratchet
• 1/4″ Ratchet

Material Shaping

• 2.625″ Hammer
• 1.625″ Hammer
• 1/2″ Drill
• 3/8″ Drill
• High Speed Rotary
• Mini High Speed Rotary
• Cut-Off Tool
• Shear
• 4″ Angle Grinder
• Reciprocating Saw
• Nibbler

Spray Painting

• Multi-Purpose Spray Gun
• Automotive Spray Gun
• HVLP Spray Gun

Finishing/Sanding

• High Speed Sander
• Random Orbit Sander
• 6″ DA Sander
• Jitterbug Sander
• Straight Line Sander

ASSEMBLY

Contents of Carton
1 – Air Compressor
2 – Wheels
2 – Shoulder Bolts, 3/8-16
2 – Hex Nuts, 3/8-16
2 – Rubber Bumpers
2 – Screws, 1/4-20 x .75

Tools Required for Assembly
1 – 9/16” socket or open end wrench
1 – 1/2” socket or open end wrench

Unpacking

1. Remove all packaging leaving the air compressor on the pallet.

2. Remove and discard the (4) screws holding the air compressor to the pallet.
   It may be necessary to brace or support one side of the air compressor when removing the pallet because the air compressor will have a tendency to tip.

3. Carefully remove the air compressor from the pallet.
   Assemble Wheels
   It will be necessary to brace or support one side of the outfit when installing the wheels because the compressor will have a tendency to tip.

4. Attach wheels with shoulder bolts and nuts as shown.

5. Tighten securely. NOTE: The outfit will sit level if the wheels are properly installed.

The wheels and handle do not provide adequate clearance, stability, or support for pulling the unit up and down stairs or steps. The unit must be lifted or pushed up a ramp.

Assemble Rubber Feet

1. Attach rubber feet with the screws provided as shown in previous figure.
2. Tighten securely.

INSTALLATION

HOW TO SET UP YOUR UNIT
Location of the Air Compressor

Locate the air compressor in a clean, dry, and well-ventilated area. The air compressor should be located at least 12″ away from the wall or other obstructions that will interfere with the flow of air. The air compressor pump and shroud are designed to allow for proper cooling. The ventilation openings on the compressor are necessary to maintain proper operating temperature. Do not place rags or other containers on or near these openings. The air filter must be kept clear of obstructions which could reduce airflow to the air compressor.

GROUNDING INSTRUCTIONS

RISK OF ELECTRICAL SHOCK. In the event of a short circuit, grounding reduces the risk of shock by providing an escape wire for the electric current. This air compressor must be properly grounded.
The portable air compressor is equipped with a cord having a grounding wire with an appropriate grounding plug (see following illustrations). The plug must be used with an outlet that has been installed and grounded in accordance with all local codes and ordinances.

1. The cord set and plug with this unit contain a grounding pin. This plug MUST be used with a grounded outlet.
   IMPORTANT: The outlet being used must be installed and grounded in accordance with all local codes and ordinances.

2. Make sure the outlet being used has the same configuration as the grounded plug. DO NOT USE AN ADAPTER. See illustration.

3. Inspect the plug and cord before each use. Do not use if there are signs of damage.

4. 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.

IMPROPER GROUNDING CAN RESULT IN ELEC
TRICAL SHOCK.
Do not modify the plug provided. If it does not fit the available outlet, a correct outlet should be installed by a qualified electrician. Repairs to the cord set or plug MUST be made by a qualified electrician.

Extension Cords
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:

• 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
• in good condition
• no longer than 50 feet
• 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.)

Voltage and Circuit Protection
Refer to the Parts Manual for the voltage and minimum branch circuit requirements.
Certain air compressors can be operated on a 15 amp circuit if the following conditions are met.

1. Voltage supply through branch circuit is 15 amps.
2. Circuit is not used to supply any other electrical needs (lights, appliances, etc.).
3. Extension cords comply with specifications.
4. Circuit is equipped with a 15 amp circuit breaker or 15 amp time delay fuse. NOTE: If compressor is connected to a circuit protected by fuses, use only time delay fuses. Time delay fuses should be marked “D” in Canada and “T” in the US.

If any of the above conditions cannot be met, or if operation of the compressor repeatedly causes interruption of the power, it may be necessary to operate it from a 20 amp circuit. It is not necessary to change the cord set.

OPERATION

Know Your Air Compressor
READ THIS OWNER’S MANUAL AND SAFETY RULES BEFORE OPERATING YOUR UNIT. Compare the illustrations with your unit to familiarize yourself with the location of various controls and adjustments. Save this manual for future reference.

Description of Operation
Become familiar with these controls before operating the unit.
On/Auto/Off Switch : Turn this switch ON to provide automatic power to the pressure switch and OFF to remove power at the end of each 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.
Safety Valve: If the pressure switch does not shut off the air compressor at its “cut-out” pressure setting, the safety valve will protect against high pressure by “popping out” at its factory set pressure (slightly higher than the pressure switch “cut-out” setting).
Outlet Pressure 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.
Tank Pressure Gauge: The tank pressure gauge indicates the reserve air pressure in the tank.
Regulator: Controls the air pressure shown on the outlet pressure gauge. Pull the knob out and turn clockwise to increase pressure and counterclockwise to decrease pressure. When the desired pressure is reached push knob in to lock in place.

Drain Valve: The drain valve is located at the base of the air tank and is used to drain condensation at the end of each use.

Cooling System (not shown): 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.
Air Compressor Pump (not shown) : Compresses air into the air tank. Working air is not available until the compressor has raised the air tank pressure above that required at the air outlet.
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 “cutout” pressure, the check valve “closes”, allowing air pressure to remain inside the air tank.

Pressure Release Valve: The pressure release valve located on the side of the pressure switch is designed to automatically release compressed air from the compressor head
and the outlet tube when the air compressor reaches “cut out” pressure or is shut off. The pressure release valve allows the motor to restart freely. When the motor stops running, air will be heard escaping from this valve for a few seconds. No air should be heard leaking when the motor is running, or continuous leaking after unit reaches “cut-out” pressure.

How to Use Your Unit
How to Stop:

1. Set the On/Auto/Off lever to “OFF”.

Before Starting
Break-in Procedure

Serious damage may result if the following break-in instructions are not closely followed.
This procedure is required before the air compressor is put into service and when the check valve or a complete compressor pump has been replaced.

1. Make sure the On/Auto/Off lever is in the “OFF” position.
   NOTE: If hose end adapter was replaced with quick connect, pull the coupler back until it clicks to prevent air from escaping through the quick connect.

2. Plug the power cord into the correct branch circuit receptacle. (Refer to Voltage and Circuit
   Protection paragraph in the Installation section of this manual.)

3. Open the drain valve fully (counter-clockwise) to permit air to escape and prevent air pressure buildup in the air tank during the break-in period.

4. Move the On/Auto/Off lever to “ON/AUTO” position. The compressor will start.

5. Run the compressor for 15 minutes. Make sure the drain valve is open and there is minimal air pressure build-up in tank.

6. After 15 minutes, move the On/Auto/Off lever to the “OFF” position and close the drain valve (clockwise).

7. Move the On/Auto/Off lever to “ON/AUTO” position. The air receiver will fill to “cut-out” pressure and the motor will stop.
   The compressor is now ready for use.

Before Each Start-Up

1. Place the On/Auto/Off lever to “OFF”.
2. Pull the regulator knob out, and turn it counter-clockwise until it stops. Push the knob in to lock in place.
3. Attach hose and accessories. NOTE: The hose or accessory will require a quick connect plug if the air outlet is equipped with a quick connect.

Too much air pressure causes a hazardous risk of bursting. Check the manufacturer’s maximum pressure rating for air tools and accessories. The regulator outlet pressure must never exceed the maximum pressure rating.

How to Start

1. Turn the On/Auto/Off lever to “AUTO” and allow tank pressure to build. Motor will stop when tank pressure reaches “cut-out” pressure.
2. Pull the regulator knob out and turn clockwise to increase pressure. When the desired pressure is reached push knob in to lock in place. The compressor is ready for use.
   NOTE: Always operate the air compressor in well-ventilated areas free of gasoline or other combustible vapors. If the compressor is being used to operate a sprayer DO NOT place it near the spray area.

MAINTENANCE

Customer Responsibilities

| Before each use| Daily or after
each use| Frequently| Yearly
---|---|---|---|---
Check Safety Valve| | | |
Drain Tank| | | |
Air Filter| | | |
Air compressor pump intake and exhaust valves| | | |

Unit cycles automatically when power is on. When performing maintenance, you may be exposed to voltage sources, compressed air, or moving parts. Personal injuries can occur. Before performing any maintenance or repair, disconnect the power source from the compressor and bleed off all air pressure.
To ensure efficient operation and longer life of the air compressor outfit, a routine maintenance schedule should be prepared and followed. The following routine maintenance schedule is geared to an outfit in a normal working environment operating on a daily basis. If necessary, the schedule should be modified to suit the conditions under which your compressor is used. The modifications will depend upon the hours of operation and the working environment.
Compressor outfits in an extremely dirty and/or hostile environment will require a greater frequency of all maintenance checks. NOTE: See the “Operation” section for the location of controls.

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

To Drain Tank

1. Set the On/Auto/Off lever to “OFF”.

2. Pull the regulator knob out and turn clockwise to set the outlet pressure to zero.

3. Remove the air tool or accessory.

4. Pull the ring on the safety valve allowing air to bleed from the tank until tank pressure is approximately 20 psi. Release the safety valve ring.

5. Drain water from the air tank by opening drain valve (counter-clockwise) on the bottom of the tank.
   Water will condense in the air tank. If not drained, water will corrode and weaken the air tank causing a risk of air tank rupture.

6. After the water has been drained, close the drain valve (clockwise). The air compressor can now be stored.
   NOTE: If drain valve is plugged, release all air pressure.
   The valve can then be removed, cleaned, then reinstalled.

Air Filter – Inspection and Replacement

Hot surfaces. Risk of burn. Compressor heads are exposed when the filter cover is removed. Allow the compressor to cool prior to servicing. A dirty air filter will not allow the compressor to operate at full capacity. Keep the air filter clean at all times.

1. Remove the air filter cover.

2. Remove the air filter and make sure it is clean.
   IMPORTANT: Do not operate the compressor with the air filter removed.

3. If dirty, rinse air filter with warm water and squeeze it dry.

4. Replace air filter and air filter cover.
   NOTE: If the air filter is extremely dirty it will need to be replaced. Refer to the “Repair Parts” for the correct part number.

Air Compressor Pump Intake and Exhaust Valves
Once a year have a Trained Service Technician check the air compressor pump intake and exhaust valves.

Motor
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 cool down before restarting. The compressor will automatically restart after the motor cools.
If the overload protector shuts the motor off frequently, 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 blow out when starting the motor; lights dim and remain dim when the motor is started and is running.

SERVICE AND ADJUSTMENTS

Unit cycles automatically when power is on. When doing Maintenance, you may be exposed to voltage sources, compressed air or moving parts. Personal injuries 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 PERFORMED BY A TRAINED SERVICE TECHNICIAN.

Before servicing:

• Unplug or disconnect the electrical supply to the air compressor.
• Bleed tank of pressure.
• Allow the air compressor to cool.

To Replace or Clean Check the Valve

1. Release all air pressure from the air tank. See “To Drain Tank” in the Maintenance section.

2. Unplug the outfit.

3. Using a phillips screwdriver remove the air filter cover.

4. Remove the rear shroud using a T-20 Torx wrench.

5. Using an adjustable wrench loosen the outlet tube nut at the air tank. Carefully move the outlet tube away from the check valve.

6. Using an adjustable wrench loosen the pressure relief tube nut at the air tank. Carefully move the pressure relief tube away from the check valve.

7. Unscrew the check valve (turn counterclockwise) using a 7/8” open end wrench. Note the orientation for reassembly.

8.  Using a screwdriver, carefully push the valve disc up and down. NOTE: The valve disc should move freely up and down on a spring that holds the valve disc in the closed position, if not the check valve needs to be cleaned or replaced.

9. Clean or replace the check valve. A solvent, such as paint or varnish remover can be used to clean the check valve.

10. Apply sealant to the check valve threads. Reinstall the check valve (turn clockwise).

11. Replace the pressure release tube. Tighten nut.

12. Replace the outlet tube and tighten nut.

13. Replace the shroud and air filter.

14. Perform the Break-in Procedure. See “Break-in

Procedure” in the Operation section.

To Replace Regulator

1. Release all air pressure from air tank. See “To Drain Tank” in the Maintenance section.

2. Unplug outfit.

3. Remove the outlet pressure gauge and quick connect (if equipped) from the regulator.

4. Remove the regulator.

5. Apply pipe sealant tape to the nipple.

6. Assemble the regulator and orient as shown.
   NOTE: Arrow indicates the flow of air. Make sure it is pointing in the direction of airflow.

7. Reapply pipe sealant to the outlet pressure gauge and quick connect.

8. Reassemble outlet pressure gauge and quick connect. Orient outlet pressure gauge to read correctly. Tighten quickly and connect with a wrench.

STORAGE

Before you store the air compressor, make sure you do the following:

1. Review the “Maintenance” section on the preceding pages and perform scheduled maintenance as necessary.

2. Set the On/Auto/Off lever to “OFF”.

3. Turn the regulator counterclockwise and set the outlet pressure to zero.

4. Remove the air tool or accessory.

5. Pull the ring on the safety valve allowing air to bleed from the tank until tank pressure is approximately 20 psi. Release the safety valve ring.

6. Drain water from the air tank by opening the drain valve on the bottom of the tank.
   **** Water will condense in the air tank. If not drained, water will corrode and weaken the air tank causing a risk of air tank rupture.

7. After the water has been drained, close the drain valve.
   NOTE: If drain valve is plugged, release all air pressure. The valve can then be removed, cleaned, then reinstalled.

8. Protect the electrical cord and air hose from damage (such as being stepped on or run over).
   Wind them loosely around the compressor handle (If so equipped).
   Store the air compressor in a clean and dry location.

TROUBLESHOOTING

Performing repairs may expose voltage sources, moving parts or compressed air sources, moving parts, or compressed air sources. Personal injury may occur. Prior to attempting any repairs, unplug the air compressor and bleed off all air tank air pressure.

shut off the motor when the compressor reaches “cut-out” pressure.Pressure switch “cut-out” too high.| Move On/Auto/Off lever to the “OFF” position, if the outfit does not shut off contact a Trained Service Technician. Contact a Trained Service Technician.
Air leaks at fittings.| Tube fittings are not tight enough.| Tighten fittings where air can be heard escaping. Check fittings with soapy water solution. DO NOT OVER TIGHTEN.
Air leaks at or inside check valve| Check valve seat damaged.| 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. Replace the check valve. Refer the “To Replace or Clean Check Valve” in the “Service and Adjustment” section.
Air leaks at pressure switch release valve.| Defective pressure switch release valve.| Contact a Trained Service Technician.
Air leaks in air tank or at air tank welds.| Defective air tank.| The Air tank must be replaced. Do not repair the leak.
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.| Contact a Trained Service Technician.
The pressure reading on the regulated pressure gauge drops when an accessory is used.| It is normal for “some” pressure drop to occur.| If there is an excessive amount of pressure drop when the accessory is used, adjust the regulator following the instructions in the “Description of Operation” paragraph in the “Operation Section.

NOTE: Adjust the regulated pressure under flow conditions (while the accessory is being used).

Operate the safety valve manually by pulling on the ring. If the valve still leaks, it should be replaced. Remove and clean, or replace.
Compressor is not supplying enough air to operate accessories.| Prolonged excessive use of air.  The compressor is not large enough for the air requirement. Hole in the hose. Check valve restricted. Air leaks. Restricted air intake filter| Decrease the amount of air usage. Check the accessory air requirement. If it is higher than the SCFM or pressure supplied by your air compressor, you need a larger compressor.  Check and replace if required. Remove and clean, or replace. Tighten fittings. Clean or replace air intake filter. Do not operate the air compressor with the filter removed. Refer to the “Air Filter” paragraph in the “Maintenance “ section
Regulator knob has a continuous air leak.| Damaged regulator| Replace
Regulator will not shut off the air outlet.| Damaged regulator| Replace
PROBLEM| CAUSE| CORRECTION
---|---|---
Motor will not run.| Motor overload protection switch has tripped| Let motor cool off and the overload switch will automatically reset.
| Tank pressure exceeds pressure switch “cut-in” pressure.| Motor will start automatically when tank pressure drops below the “cut-in” pressure of the pressure switch.
| Extension cord is the wrong length or gauge.| Check for proper gauge wire and cord length.
|

Check valve stuck open.

| Remove and clean, or replace.
| Loose electrical connections.| Check the wiring connection inside the pressure switch and terminal box area.
| Possible defective motor or start capacitor.| Have checked by a Trained Service Technician.
| Paint spray on internal motor parts.| Have checked by a Trained Service Technician. Do not operate the compressor in the paint spray area. See flammable vapor warning.
| Pressure release valve on the pressure switch has not unloaded head pressure.| Bleed the line by pushing the lever on the pressure switch to the “off” position; if the valve does not open, replace the switch.
| Fuse blown, circuit breaker tripped.| 1. Check fuse box for a blown fuse and replace it 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 use a time delay fuse.
| | 3. Check for low voltage conditions and/or proper extension cord.
| | 4. Disconnect the other electrical appliances from the circuit or operate the compressor on its own branch circuit.

Sears, Roebuck and Co., Hoffman Estates, IL 60170 U.S.A.
Visit our Craftsman website:www.sears.com/craftsman
D22130 Rev. 1 11/8/01

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