SEARS 919.155150 Craftsman Spray Gun Owner’s Manual

GENERAL OWNERS MANUAL
MODEL NO.
919.155150

919.155150 Craftsman Spray Gun

CRAFTSMAN SPRAY GUN
IMPORTANT : Read the Safety Guidelines and All Instructions Carefully Before Operating
FULL ONE YEAR WARRANTY ON CRAFTSMAN SPRAY GUNS
If this Craftsman Spray Gun fails due to a defect in material or workmanship within 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 warranty gives you specific legal rights and you may have other rights which vary from state to state.
Sears, Roebuck and Co., Sears Tower, Dept. 731CR-W, Chicago, IL 60684

SAFETY GUIDELINES

This manual contains information that is important for you to know and understand. This information relates to protecting YOUR SAFETY and PREVENTING EQUIPMENT PROBLEMS. To help you recognize this information,  we use the following symbols. Please read the manual and pay attention to these sections.

WARNING
IMPORTANT SAFETY INFORMATION­ A HAZARD THAT M/GHTCAUSE SERIOUS INJURY OR LOSS OF LIFE.
CAUTION
Information for preventing damage to equipment.

NOTE
Information that you should pay special attention to.
WARNING
HAZARDS CAN OCCUR DURING NORMAL USE OF THIS EQUIPMENT.
PLEASE READ THE FOLLOWING CHART.

Flammable Spray
Materials| When paints or materials are sprayed, they are broken into very small particles and mixed with air. This will cause certain paints and materials to become extremely flammable.| Never spray near open flames or pilot lights in stoves or heaters.
Never smoke while spraying.
Provide ample ventilation when spraying indoors. Never
spray in a closed area. There must be a flow of fresh
air at all times.
Toxic Vapors| Some paints and coatings may be harmful if inhaled or allowed to come into contact with skin or eyes.| Read labels and safety data for all material you spray. Follow all 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. Read mask and respirator instructions carefully. Consult with a safety expert or Industrial hygienist if you are not sure about the use of a certain mask or respirator.
Compressed Air| Compressed air may propel dirt, metal shavings, etc. and possibly cause an injury.| Never point any nozzle or sprayer toward a person or part of the body.
Always wear safety goggles or glases when spraying.
Pressurized Parts| C-pertain parts are under pressure wheneverlhe gun is connected to a pressurized air line. These parts may be propelled f the gun is disassembled.| Disconnect the gun from the air line, or completely
depressurize the air line whenever the gun is to be
disassembled.
Explosion Hazard – Incompatible Materials| The solvents 1,1,1-Trichloroethane and Methylene Chloride can chemically react with the aluminum used in most spray equipment, and this gun and cup, to produce an explosion hazard.| Read the label or data sheet for the material you intend to spray.
1. Do not use any type of spray coating material
containing these solvents.
1 1 2. Do not use these solvents for equipment cleaning or flushing.
1 3. If in doubt as to whether a material is compatible, contact your material supplier.

GENERAL INFORMATION

SPRAY GUN

This versatile Craftsman Spray Gun is shipped ready for use with most air compressors 3 horsepower and higher. It is a non-bleeder gun, which is compatible with Sears and most other modern compressors. Non­ bleeder guns require air from an air compressor having an air regulator and an automatic start/stop pressure switch or an automatic pressure unloader. The gun has a built-in air valve which shuts off the airflow through the gun when the trigger is released.
As a standard feature on this gun, you have a siphon and pressure feed setting. It is set at the factory for siphon feed application, which makes it ideal for apply­ ing light and medium bodied paints (stain, lacquer) to large size jobs such as complete auto refinishing. The cup provided with this gun is designed for suction feed only. However, this gun can also be used with a remote pressure feed paint tank (see page 6) for spraying on larger painting applications. When applying heavy bodied paints, the SGE-6 air cap is recommended (see “Op­ tional Accessories”).
There are a variety of other accessories available to add further to the versatility of your Craftsman Spray Gun.
For more information, please refer to the optional accessory section. The accessories, air caps and fluid tips are sold separately and are available at your local Sears Service Center. 9-15967 Gasket Kit is available through Sears Catalog or Service Centers.
NOTE
This gun is designed for use with most finishing materials. It is not designed for use with corro­ sive or highly abrasive materials. Using these materials can lead to poor performance and/or failure of this product.

AIR CAPS

External Mix- The air and material are mixed outside the air cap. This type of cap is best suited for quick drying paints, such as latex, lacquers, etc.
Internal Mix – The air and material are mixed inside the air cap. This type of cap is normally used for thick paint where fast application is desired and where quality of finish is less important. Internal mix must be used with pressure feed set-up.
To change air caps, turn the retaining ring (1) counter­ clockwise and remove from gun. Remove air cap (2) and replace with different cap. Reassemble in reverse order.

NOTE
Matched air cap and fluid tip combinations are recommended for optimum performance and are available as accessories. (See the “Op­ tional Accessories” section for a listing of op­ tional air caps and fluid tips.) The fluid tip is removed with a 1/2″ socket. When assembling, be sure the plastic baffle is in place and the tip is not cross threaded or over tightened (160­ 220 in.-lbs. Torque).

PREPARATION FOR SPRAYING
Your Craftsman spray gun is shipped completely as­ sembled, and set-up for siphon feed spraying. Instal­ lation is accomplished by connecting an air line tot he air inlet adapter (18).
This spray gun should be flushed with solvent prior to spraying with paint.
The fluid needle packing (13) in this gun may be loose when received. Tighten the packing retainer (14) until it grabs and holds the fluid needle (9), then back off the packing retainer (approx. 1/4 turn) until the fluid needle is free to travel into the fluid tip (3).
Be sure the surface to be sprayed is dry and free of all dirt, grease, oil and loose paint. Mix and prepare the paint according to the manufacturer’s instructions. The use ol a Sears viscosimeter can be very helpful. Strain the material to be sprayed thorugh a 60 to 90 mesh screen or equivalent.
Set air pressure at 40 psi as a starting point and follow the safety precautions in the “Safety Guidelines” before you begin.

CONVERTING TO REMOTE PRESSURE FEED

1. Remove suction cup and lid assembly by loosening and removing the swivel nut (21 ). This will require a 3/4″ open end wrench.
2. The spray gun is now ready to be connected to any pressure feed tank with a standard 3/8″ straight pipe female connection.

OPERATION

1. Shut off fluid flow through gun by turning fluid needle adjusting screw ( 12) clockwise as far as it will go. Do not force.
2. Keep the air pressure as low as possible.
3. Open (turn counterclockwise) air valve assembly (6) until the first thread is flush with the back of gun. This is the full open position.
4. Holdthetrigger(17) back and gradually open the fluid needle adjusting screw (12) until a desired pattern is obtained.
5. Trigger the gun quickly, one second on-off. Spray a small test pattern.
6. If the gun sprays too fast (runs or sags), lower the air and fluid pressure. If too slow, increase pressure.
   Adjust to balance pressure.
   When using internal mix air cap, begin with the same air and fluid pressure.

CAUTION

The SGE-418 air valve (6) is under pressure whenever the gun is triggered. If the valve is turned out too far, it may leave the gun forcefully when the gun is triggered. The “O” ring may also be damaged. Do not turn the valve out past the first thread-there will be no effect on the spray pattern after that position.

MAINTENANC

Thoroughly clean the spray gun after each use.

1. Turn off air supply, and remove cup from lid.

2. Empty the material from cup and rinse with a clean solvent (thinner).

3. Fill cup with solvent and attach to the lid.
   NOTE
   Always clean with reduced air pressure. An air pressure no greater than 15 to 20 PSI will allow quick and thorough cleaning of the cup and gun.

4.  Turn on the air supply and spray solvent through the spray gun. While spraying, shake the gun up and down to remove all excess material from the lid.
   Repeat Steps 1-4 above with a clean solvent until all traces of material are removed.

5. Turn off air supply to gun.

6. To clean the vent hole, shut off air to gun, hold the trigger back and turn gun assembly upside down over solvent container. Allow solvent to drip out vent hole in lid until clear solvent is seen.

7. Wipe the outside of the spray gun and cup with a solvent soaked cloth. DO NOT IMMERSE THE GUN IN SOLVENT — THIS WILL WASH OUT THE LU­ BRICANTS AND DRY OUT PACKINGS.

8. To clean the air cap and fluid tip, remove them (see Air Caps), soak in suitable solvent and wipe clean with a clean cloth. If the holes are plugged, use a wooden toothpick to remove any material particles.
   NEVER use a needle or any other metal object as this may damage the holes and result in imperfect spray patterns. When reassembling the fluid tip, take care not to overtighten (160-200 in.lbs. torque is recom­   mended) or cross thread the fluid tip into the gun body.

NOTE
If water is used as a solvent to clean the gun, spray paint thinner or mineral spirits through the gun after cleaning to remove any excess mois­ ture and protect parts.
After cleaning the spray gun, apply a few drops of light household oil to the fluid needle (9) next to the packing retainer (14), on the threads of the air valve assembly (6) and that part of the valve stem (7) which protrudes from the gun body. All springs should be given a coating of light grease periodically.

HINTS FOR GOOD SPRAYING RESULTS

• Hold the gun perpendicular to the surface, 6″ to 8″ distance.
• Follow contour.
• Overlap each stroke 50%.
• Your pattern should normally be shaped like this.
• Ends are feathered by triggering. That is, begin stroke before pulling trigger and releasing just before ending the stroke.
• Spray edges and corners first. This will reduce over­ spray while providing good coverage on corners.
• Don’t arc strokes, move the gun parallel to work.
• If not, see Troubleshooting Guide.

TROUBLESHOOTING GUIDE

Heavy top or bottom pattern.
Heavy right or left side pattern.| Material build-up on air cap or fluid tip. Partially plugged horn holes, center holes or fluid tip hole.| Determine where material build-up is by inverting cap and test spraying. If pattern shape stays in same position, the condition is caused by mate-rial build-up on fluid tip. If pattern changes with cap movement, the condition is in the air cap.
Soak cap ortip in suitable solvent and wipe clean. To clean orifices use a broom straw or toothpick. Never use a wire or hard instrument. This damags holes and distorts its spray pattern.
Heavy center pattern.| Too much material. Material too thick.| Reduce fluid flow or increase air pressure. Thin material.
Split spray pattern.| Not enough material.| Reduce air pressure or increase fluid flow.
Jerky or fluttering spray.| Insufficient material.
Gun with cup tipped at excessive angle.
Obstructed fluid passage or hose.
Loose fluid tip or damaged tip seat. (Most common cause.)
Loose or cracked fluid tube in cup or pressure tank.
Too heavy fluid for suction feed.
Dry or worn packing or loose pack- ing nut.| Fill material container.
Do not tip excessively or rotate fluid tube.
Clean.
Tighten or replace.
Tighten or replace.
Thin material or change to pressure feed. Lubricate or replace. Tighten.
Unable to gel round spray.| Fan adjustment stem not seating Properly.| Clean or replace
---|---|---
Improper spray pattern.| Gun improperly adjusted. Dirty air cap.
Fluid tip obstructed.
Sluggish needle.| Readjust gun following instructions carefully. Clean air cap.
Clean.
Lubricate.
Will not spray.| No air pressure at gun.
Internal mix air cap used with WC- tion feed.
Fluid pressure too low with internal mix cap and pressure lank.
Screw not open enough.
Fluid too heavy for suction feed.| Chock air lines.
Change to pressure feed.
Increase fluid pressure at tank.
Open fluid adjusting screw. Change to pressure feed.
Fluid leakage from packing retainer nut.| Packing nut loose. Packing worn or dry.| Tighten, but not so tight as to grip needle. Replace packing or lubricate. See “Maintenance.
Dripping from fluid tip.| Dry packing.
Sluggish needle. Tight packing nut.| Lubricate. See “Maintenance. Lubricate. See “Maintenance. Adjust. See “Operation”.
Runs and sags.| Too much material for spray pace. Material too thin.
Gun tilted on an angle.| Reduce pressure and readjust. Remix or spray light coats. Hold gun at right angle to work.
Excessive overspray.| Too much atomization air pressure. Gun too far from surface.
Improper stroking; i.e., arcing,
moving too fast.| Reduce.
Check distance. See “Hints for Good Spray Results’.
Move at moderate pace, paralleltowork surface. See “Hints for Good Spraying Results”.
Excessive fog.| Too much or quick drying thinner. Too much atomization air pressure.| Remix. Reduce.
Thin, sandy coarse finish
drying before it flows out.| Gun too far from surface.
Too much air pressure.
Improper thinner.| Move gun closer to surface. See “Hints for Good Spraying Results”.
Reduce pressure.
Follow paint manufacturer’s instructions.
---|---|---
Thick dimpled finish “orange
peel.” Too much material
coarsely atomized.| Gun too close to surface.
Air pressure too low.
Improper thinner.
Material not thoroughly mixed.
Surface rough, oily, dirty.| Move gun away from the surface. See “Hints for Good Spraying Results”.
Increase air pressure or reduce fluid pressure.
Follow paint manufacturer’s instructions.
Mix thoroughly.
Properly clean and prepare surface.

OPTIONAL ACCESSORIES

SGE-24
SGE-33| External Mix Air Cap. Fluid Tip| Small size jobs (lawn & garden, auto repair).
Medium to light paint, siphon feed. Heavy paint, pressure feed.
SCFM required 2.7 @ 40 Psi
SGE-23
SGE-33| External Mix Air Cap Fluid Tip| For faster paint flow medium size jobs (lawn & garden, auto repair). Medium to light paint, siphon feed. Heavy paint, pressure feed.
SCFM required 5.0 @ 40 PSI
SGE-4
SGE-25| External Mix Air Cap Fluid Tip| For fastest paint flow on large size jobs (professional auto refinishing). Medium to light paint, siphon feed. Heavy paint, pressure feed.
SCFM required 8.3 @ 40 PSI
SGE-6
SGE-33| Internal Mix Air Cap
Fluid Tip| Extra large size jobs (wood, coarse surfaces).
House paint, latex, rubber based, wood filler/primer, vinyl synthetics -NOT FOR USE WITH FAST DRYING PAINTS SUCH AS LACQUER (pressure feed only).
SCFM required 2.7 @ 40 PSI

NOTE : Your spray gun is equipped with SGE-4 external mix air cap and SGE-25 fluid tip. When ordering a new or replacement air cap also order the corresponding fluid tip listed for best results.

PARTS LIST

Key Nos. 4, 5, 7, 13 & 25 can be purchased individually or as part of 9-15967 Gasket Kit, through your local Sears Service Center or Sears Catalog.

SERVICE
MODEL NO.
HOW TO ORDER
REPAIR PARTS

Now that you have purchased your Craftsman Spray Gun, should a need ever exist for repair parts or service, simply contact any Sears Service Center and most Sears, Roebuck and Co. stores. Be sure to provide all pertinent facts when you call or visit.
The model number of your Craftsman Spray Gun will be found stamped on the gun handle. Always mention the model number in all correspondence when ordering repair parts.
WHEN ORDERING REPAIR PARTS, ALWAYS GIVE THE FOL­ LOWING INFORMATION:

• PART NUMBER
• MODEL NUMBER
• PART NUMBER
• MODEL NUMBER

All parts listed may be ordered from any Sears Service Center and most Sears stores.
If the parts you need are not stocked locally, your order will be electronically transmitted to a Sears Repair Parts Distribution Center for handling.
Sears, Roebuck and Co., Chicago, IL 60684 U.S.A.

References

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