SEARS CRAFTSMAN 919.154330 (01) PDF MANUAL

SEARS CRAFTSMAN 919.154330 (01) PDF SUMMARY:

What should I do before operating the air compressor?

Read the Safety Guidelines and All Instructions Carefully Before Operating.

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Where can I find the model number?

The model number can be found on the label on the back of the shroud.

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Where can I find the code number?

The code number can be found on the foil label on the back of the air tank.

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Where can I find the Manufacturers Number (ASME Code Compressors only)?

The Manufacturers Number is located on the metal data plate which is welded onto the back side of the air tank. This data plate is painted the same color as the tank.

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What should I do with the model number, code number, and manufacturer’s number?

Retain these numbers for future reference.

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What are some important safety guidelines?

• Hot Parts: The compressor head gets hot when the air compressor is running. If you touch it, you may be seriously burned. Never touch the air compressor head during or immediately after operation.
• Flammable Vapors: It is normal for the motor and pressure switch to spark when operating. if the sparks come into contact with vapors from gasoline, flammable paints or solvents, they may ignite, causing a fire or explosion. 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 a closed area. There must be a flow of fresh air at all times.
• Air Tank: Modifications to the air compressor can cause the air tank to rupture or explode. Never replace the air tank with a different model or a larger tank. Never drill into, weld, or in any way modify the air tank.
• Compressed Air: Compressed air can propel dust, dirt, or loose particles it comes in contact with. Never point any nozzle or sprayer toward a person or any part of the body. Always wear safety goggles or glasses when using the air compressor.
• Too much air pressure applied to air tools or accessories can cause damage or risk of bursting. Check the manufacturer’s maximum pressure rating for air tools and accessories. Regulator outlet pressure must never exceed the maximum pressure rating. Always turn the air compressor off before attaching or removing accessories.
• Electricity: Your air compressor is powered by electricity. Always unplug the air compressor prior to maintenance or repair. Never use the air compressor outdoors when it is raining. Always plug the cord into an electrical outlet with the specified voltage and adequate fuse protection.
• Toxic Vapors: It is normal for compressed air to contain toxic or irritating vapors. Such vapors are harmful if inhaled. Certain materials you are spraying (like paint, weed killer, sand or insecticide) may be harmful if you inhale them. Never directly inhale the compressed air produced by this unit. Use a mask or respirator if there is a chance of inhaling toxic sprayed materials. Read labels and safety data for all materials you spray. Follow all safety precautions.
• Unsuitable Solvents: The solvents 1,1,1 – Trichloroethane and Methylene Chloride can chemically react with aluminum 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. If the material you intend to spray contains these solvents, 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.

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What are the specification chart details for model number 919.154330?

• Horsepower: 2.5
• Displacement: 11.8
• Bore: 2 3/8"
• Stroke: 1.35"
• Voltage-Single Phase: 120/240
• Minimum Branch Circuit Requirement: 15 amps** “Fusetron” Type T***
• Air Tank Capacity: 20 gal.
• Approximate Cut-in Pressure: 80
• Approximate Cut-out Pressure: 100
• SCFM @ 40 psig: 7.5
• SCFM @ 90 psig: 5.6

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What are the specification chart details for model number 919.154430?

• Horsepower: 2.5
• Displacement: 11.8
• Bore: 2 3/8"
• Stroke: 1.35"
• Voltage-Single Phase: 120/240
• Minimum Branch Circuit Requirement: 15 amps** “Fusetron” Type T***
• Air Tank Capacity: 20gal. A.S.M.E.
• Approximate Cut-in Pressure: 80
• Approximate Cut-out Pressure: 100
• SCFM @ 40 psig: 7.5
• SCFM @ 90 psig: 5.6

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What is CFM?

Cubic feet per minute.

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What is SCFM?

Standard cubic feet per minute; a unit of measure of air delivery.

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What is PSIG?

Pounds per square inch gauge; a unit of measure of pressure.

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What does ASME mean?

American Society of Mechanical Engineers; made, tested, inspected and registered to meet the standards of the ASME.

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What does U.L. LISTED mean?

Samples of compressor outfits, taken from production, were submitted to U.L. and found to comply with their requirements for design and performance.

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What is “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 the motor will re-start automatically. The low pressure at which the motor automatically re-starts is called “cut-in pressure”.

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What is “Cut-Out Pressures”?

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 pressure higher than its capacity. The high pressure at which the motor shuts off is called “cut-out pressure”.

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What accessories can I use with the Sears Air Compressor?

• Spray guns
• Blowguns
• Air caulking guns
• Air powered washer guns
• Sandblasters
• Air brushes
• Air line filters
• Tire air chucks
• Paint tanks
• Air tanks
• Inflator kits
• Quick connector sets (various sizes)
• Viscosimeter
• Air pressure regulators
• Oil fog lubricators
• Air tools: Sanders, Drills, Impact wrenches, Hammers
• Air hose: ¼", 5/15" or 3/a" I.D. in various lengths

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What does the air compressor unit consist of?

The air compressor unit consists of a 1 cylinder, single-stage air compressor pump, an air tank, air hose, wheels, handles, and associated controls. You will also find an air chuck.

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Does the air compressor require oil?

This air compressor requires no oil.

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What can the air compressor be used for?

Your air compressor can be used for operating paint spray guns, air tools, caulking guns, grease guns, air brushes, sandblasters, or inflating tires and plastic toys, spraying weed killers, insecticides, etc.

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What should I use when applicable for air regulation and/or moisture and dirt removal?

Separate air transformers which combine the functions of air regulation and/or moisture and dirt removal should be used where applicable.

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How does the air compressor pump work?

To compress air, the piston moves up and down in the cylinder. On the downstroke, air is drawn in through the air intake valves. The exhaust valve remains closed. On the upstroke of the piston, air is compressed. The intake valves close and compressed air is forced out through the exhaust valve, through the outlet tube, through the check valve and 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.

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What is the function of the 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.

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What is the function of the 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. If the air is not released, the motor will try to start, but will be unable to. The pressure release valve allows the motor to restart freely. When the motor stops running, air will be heard escaping from the valve for a few seconds. No air should be heard leaking when the motor is running.

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What is the function of the 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.

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What is the function of the 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 pre-set pressure.

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What is the function of the regulator?

The air pressure coming from the air tank is controlled by the regulator knob. Turn the 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 particular accessory, the outlet regulated air pressure might have to be adjusted while operating the accessory.

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What does the outlet pressure gauge indicate?

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 or equal to the tank pressure.

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What does the tank pressure gauge indicate?

The tank pressure gauge indicates the reserve air pressure in the tank.

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What tools are needed for assembly?

• pipe thread sealant (not included)
• an adjustable wrench for attaching the pressure regulator
• a 9/ 15" socket or open end wrench for attaching the wheels, wheel plates and hose adapter
• a 7/15" open end wrench for attaching the air pressure gauge
• a 3/ 15" hex key for installing the plug in the regulator
• a 3/s" open end wrench to tighten handle screws.
• a #2 phillips screwdriver for attaching the control cover.

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What should I keep in mind when installing the wheels and handle?

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.

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How do I install the handle?

1. Install the 7/s’’ dia. handle to the outside of the compressor saddle at the control end of the outfit.
2. Line up holes in handle with saddle holes and install two screws, one on each side, in the holes farthest from the handle’s end.
3. Slide shrink tubing into position on the ¾" dia. handle.
4. Dip in boiling water or use a heat gun to shrink tubing on handle.
5. Slide the small handle inside of large handle and line up holes.
6. Install two remaining screws and tighten all four screws securely.

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What should I keep in mind when attaching the wheels, wheel plates, and the rubber foot strip?

It may be necessary to brace or support one end of the outfit when attaching the wheels, wheel plates, and the rubber foot strip, because the air compressor will have a tendency to tip.

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How do I install the wheels?

1. Attach one wheel to each side of the air compressor.
2. Use one shoulder bolt and one nut for each wheel.
3. Tighten securely.

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How do I install the rubber foot strip?

1. Attach the foot strip to the bottom of the air tank leg.
2. Press firmly into place.

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How do I install the regulator?

1. Use a small amount of pipe thread sealant on all pipe thread joints.
2. Install the regulator on the end of the manifold using the short pipe nipple. The arrow on the bottom of the regulator must point away from the manifold in order for the regulator to function properly.
3. Install the adapter and plug in the regulator. The plug is supplied with the regulator.
4. Install the rear cover and the gauges at the same time.
5. Install the control cover. Fasten it to the manifold using the phillips screw. Install the plastic mounting ring to the regulator to fasten the top of the control cover.

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Where should I locate 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 air.

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What should I do if the humidity is high?

If humidity is high a Sears air filter can be installed on the air outlet adapter to remove excessive moisture. Follow the instructions packaged with the air filter for proper installation.

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What should I do if I need to use an extension cord?

Use extra air hose instead of an extension cord to avoid voltage drop and power loss to the motor. 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.)

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What can happen if the air compressor is not grounded properly?

Improper grounding can result in 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.

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How should the air compressor be grounded?

1. The 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.
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. Inspect the plug and cord before each use. Do not use if there are signs of damage.
4. 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.)

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What should I do if I don’t understand the grounding instructions?

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.

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What is the break-in procedure?

This procedure is required only once, before the air compressor is put into service.

1. Set the pressure switch OFF/AUTO lever to the “OFF” position.
2. Plug the power cord into the correct branch circuit receptacle.
3. Turn the regulator clockwise, opening it fully, to prevent air pressure build-up in the tank.
4. Move the OFF/AUTO lever to “AUTO”. The compressor will start.
5. Run the compressor for 15 minutes. Make sure the regulator is open and there is no tank pressure build up.
6. After 15 minutes, close the regulator by turning it counter-clockwise. The air tank will fill to cut-out pressure and then the motor will stop.

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What are the operating procedures?

1. Before attaching air hose or accessories, make sure the OFF/AUTO lever is set to “OFF” and the air regulator is closed. (Close it by turning it counterclockwise.)
2. Attach hose and accessories.
3. Check the manufacturer’s maximum pressure rating for air tools and accessories. The regulator outlet pressure must never exceed the maximum pressure rating.
4. Move the OFF/AUTO lever to “AUTO” and allow the pressure to build. Motor will stop when tank pressure reaches “cut-out” pressure.
5. Open the regulator by turning it clockwise. Adjust the regulator to the correct pressure setting. Your compressor is ready for use.
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.
7. When you are finished : Set the “OFF-AUTO” lever to “OFF”.
8. Turn the regulator counter-clockwise and set the outlet pressure to zero.
9. 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.

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Why should I drain water from the air 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.

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How should I drain water from the air tank?

With tank pressure at approximately 20 psi., open the drain cock and allow moisture to drain. If drain cock valve is plugged, release all air pressure. The valve can then be removed, cleaned, then reinstalled. After the water has been drained, close the drain cock. The air compressor can now be stored.

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What should I do before performing maintenance or repair?

Before performing any maintenance or repair, unplug the compressor and bleed off all air pressure.

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How do I inspect the air filter?

Keep the air filter clean at all times. Do not operate the compressor with the air filter removed. 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. If it is dirty, simply pull it out. You may wash it with a mild detergent and warm water, or replace it.

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How do I replace the check valve?

1. Release all air pressure from air tank and unplug outfit.
2. Remove shroud.
3. Loosen the top and bottom nuts and remove the outlet tube.
4. Remove the pressure release tube and fitting.
5. Unscrew the check valve (turn counterclockwise) using a socket wrench.
6. Check that the valve disc moves freely inside the 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 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.

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How do I inspect the safety valve?

Occasionally 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.

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What should I do if the motor overheats?

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 re-start after the motor cools.

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What are the symptoms of a possible voltage problem?

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.

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What should I do before I store the air compressor?

1. Review the “Maintenance” section and perform maintenance as necessary. Be sure to drain water from the air tank.
2. Protect the electrical cord and air hose from damage. Wind them loosely around the compressor handle. Store the air compressor in a clean and dry location.

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What should I do before attempting any repairs?

Prior to attempting any repairs unplug the air compressor and bleed off tank air pressure.

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What should I do if there is excessive tank pressure and the safety valve pops off?

The pressure switch does not shut off the motor when the compressor reaches “cut-out” pressure. Move the pressure switch lever to the “OFF” position. If the outfit doesn’t shut off, and the electrical contacts are welded together, replace the pressure switch. If the contacts are good, check to see if the pin in the bottom of the pressure release valve is stuck. If it does not move freely, replace the valve. The pressure switch “cut-out” may be too high. Return the outfit to a Sears Service Center to check and adjust, or replace switch.

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What should I do if there are air leaks at the fittings?

Tighten fittings where air can be heard escaping. Check fittings with soapy water solution. DO NOT OVER-TIGHTEN.

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What should I do if there are air leaks at the 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.

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What should I do if there are air leaks at the pressure switch release valve?

Remove and replace the release valve.

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What should I do if there are air leaks in the air tank?

Air tank must be replaced. Do not repair the leak.

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What should I do if there are air leaks between the head and valve plate?

Torque head screws to 8 ft. lbs. If this does not stop leak replace gasket.

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What should I do if 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.

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What should I do if there is an air leak from the safety valve?

Operate safety valve manually by pulling on ring. If valve still leaks, it should be replaced.

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What should I do if there is a knocking noise?

Remove and clean or replace the check valve.

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What should I do if the compressor is not supplying enough air to operate accessories?

Decrease amount of air usage. Check the accessory air requirement. If it is higher than the pressure supplied by your air compressor, you need a larger compressor. Clean or replace air intake filter. Do not operate the air compressor in the paint spray area. Check and replace hose if required. Remove and clean or replace check valve. Tighten Fittings.

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What should I do if the motor will not run?

Let motor cool off and overload switch will automatically reset. The motor will start automatically when tank pressure drops below “cut-in” pressure of pressure switch. Check for proper gauge wire and cord length. Remove and clean or replace check valve. Check wiring connection inside pressure switch and terminal box area. Return to Sears Service Center for inspection or replacement if necessary. Have checked at Sears Service Center. Do not operate the compressor in the paint spray area. Check fuse box for blown fuse and replace if necessary. Re-set 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 “Fusetron” type T fuses are acceptable. Check for low voltage conditions and/or proper extension cord. Disconnect the other electrical appliances from circuit or operate the compressor on its own branch circuit.

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What should I do if there is a continuous air leak from the regulator knob or the regulator will not shut-off at air outlet?

Bleed the line by pushing the lever on the pressure switch to the “Off” position ; if the valve does not open, replace it. Clean or replace regulator, or internal parts.

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Where is the model number located for ordering repair parts?

The model number of your Sears Air Compressor is 919. ___ _ . This number can be found on the label which is located on the back of the shroud.

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What information should I provide when ordering repair parts?

• PART NUMBER
• PART DESCRIPTION
• MODEL NUMBER
• NAME OF ITEM