Central pneumatic professional 92126 User manual

Mini Detail Spray Gun

ASSEMBLY AND OPERATING INSTRUCTIONS

Distributed Exclusively by Harbor Freight Tools®

3491 Mission Oaks Blvd., Camarillo, CA 93011

Visit our Web site at http://www.harborfreight.com

manual or any artwork contained herein may be reproduced in any shape or form

without the express written consent of Harbor Freight Tools.

For technical questions and replacement parts, please call 1-800-444-3353.

92126

SKU 92126 For technical questions, please call 1-800-444-3353. Page 2

Speciﬁcations

Construction Cast Aluminum Body and

Cup; Brass Nozzle

Includes Cleaning Brush and Wrench

Operating Pressure 20-50 PSI

Air Inlet 1/4” NPS

Features Adjustable nozzle

Capacity 4 oz. gravity feed cup

Air Consumption 3 CFM @ 50 PSI

Net Weight 0.8 lb.

Save This Manual

You will need the manual for the safety warnings and precautions,

assembly instructions, operating and maintenance procedures, parts list and

diagram. Keep your invoice with this manual. Write the invoice number on

the inside of the front cover. Keep the manual and invoice in a safe and dry

place for future reference.

Safety Warnings and Precautions

WARNING: When using tool, basic safety precautions should always be fol-

lowed to reduce the risk of personal injury and damage to equipment.

Read all instructions before using this tool!

1. Keep work area clean. Cluttered areas invite injuries.

2. Observe work area conditions. Do not use this sprayer in damp or wet

locations. Don’t expose to rain. Keep work area well lit. Do not use air

compressors in the presence of ﬂammable gases or liquids.

3. Keep children away. Children must never be allowed in the work area. Do

not let them handle air lines, machines, tools, paint, or extension cords.

4. Store idle equipment. When not in use, tools must be stored in a dry location

to inhibit rust. Always lock up tools and keep out of reach of children.

5. Use the right tool for the job. Do not attempt to force a small tool or

attachment to do the work of a larger industrial tool. There are certain

applications for which this tool was designed. It will do the job better and

more safely at the rate for which it was intended. Do not modify this tool

and do not use this tool for a purpose for which it was not intended.

6. Dress properly. Protective, electrically nonconductive clothes and nonskid

footwear are recommended when working. Wear restrictive hair covering

to contain long hair.

7. Use eye protection. Always wear ANSI approved impact safety goggles.

Wear an ANSI approved dust mask and respirator when working around

paint spray, chemical dusts and mists.

SKU 92126 For technical questions, please call 1-800-444-3353. Page 3

8. Do not overreach. Keep proper footing and balance at all times. Do not

reach over or across running machines.

9. Maintain tools with care. Keep tools maintained and clean for better

and safer performance. Follow instructions for lubricating and changing

accessories. Inspect tool cords periodically and, if damaged, have them

repaired by a qualiﬁed technician. The handle must be kept clean, dry, and

free from oil and grease at all times.

10. Disconnect power. Disconnect tool from air supply when not in use.

11. Remove adjusting keys and wrenches. Check that keys and adjusting

wrenches are removed from the tool or machine work surface before

connecting it.

12. Stay alert. Watch what you are doing, use common sense. Do not operate

any tool when you are tired.

13. Check for damaged parts. Before using any tool, any part that appears

damaged should be carefully checked to determine that it will operate

properly and perform its intended function. Check for alignment and

binding of moving parts; any broken parts or mounting ﬁxtures; and any

other condition that may affect proper operation. Any part that is damaged

should be properly repaired or replaced by a qualiﬁed technician. Do not

use the tool if the trigger does not operate properly.

14. Replacement parts and accessories. When servicing, use only identical

replacement parts. Use of any other parts will void the warranty. Only use

accessories intended for use with this tool. Approved accessories are

available from Harbor Freight Tools.

15. Do not operate tool if under the inﬂuence of alcohol or drugs. Read

warning labels on prescriptions to determine if your judgment or reﬂexes

are impaired while taking drugs. If there is any doubt, do not operate the

tool.

16. WARNING: The brass components of this product contain lead, a

chemical known to the State of California to cause birth defects (or other

reproductive harm). (California Health & Safety code § 25249.5, et seq.)

17. Maintenance. For your safety, service and maintenance should be

performed regularly by a qualiﬁed technician.

18. Compressed air only. Never use compressed gas as a power source.

19. Do not spray near open ﬂames, pilot lights, stoves, heaters, or any other

heat source. Most solvents and coatings are highly ﬂammable, particularly

when sprayed.

SKU 92126 For technical questions, please call 1-800-444-3353. Page 4

Warning: The warnings, cautions, and instructions discussed in this instruction

manual cannot cover all possible conditions and situations that may occur.

It must be understood by the operator that common sense and caution are

factors which cannot be built into this product, but must be supplied by the

operator.

Unpacking

When unpacking, check to make sure the following parts are included.

Mini Detail Spray Gun

Paint Cup with Lid

If any parts are missing or broken, please call Harbor Freight Tools at

the number on the cover of this manual.

Special Warnings About Paint Sprayers

Health and Safety

Hazard Nature and Cause of Hazard Prevention of Hazard

Risk of Explo-

sion or Fire

from Flammable

Materials.

Spraying paints, solvents and thinners mixes

them with oxygen in the air. This creates a

more explosive mixture than these materials



of these mixtures can cause death or severe



-

cal spark or any ignition source. Never smoke

when spraying or in the vicinity of spraying.

Never smoke unless the area has been thor-

oughly aired out. Always provide good ventila-

tion during and after spraying to eliminate any

enclosed explosive atmosphere.

Risk of Fire or

Explosion from

Incompatible

Materials.

Certain solvents, including Methylene Chlo-

ride and 1,1,1-Trichloroethane can chemi-

cally react with with the Aluminum used in

this spray equipment. This can cause an

explosion which may result in death or seri-

ous personal or property injury. Other chemi-

cals, when mixed, may cause unpredictable

results.

Inform yourself by reading the documentation

provided with each solvent before introduc-

ing to the sprayer. Never spray the named

solvents in this sprayer. Never use these

materials for cleaning equipment. Never use

any solvent if in doubt of its composition or

compatibility with Aluminum, other materials

or this spraying equipment.

Inhalation Haz-

ard.

Inhaling solvents or sprayed materials may

cause severe injury to the lungs or body, due

to their chemical make up or the fact that they

may coat the interior of the lungs.

Use an ANSI approved ventilator or face

mask. NOTE: Some face masks, such as

     

against harmful sprays and fumes. Consult

safety documentation provided with the ma-

terials you are spraying or an industrial safety

expert when determining the appropriate re-

spiratory protection.

Risk of Ejected

Objects or Sonic

Injury.

Many components of this tool and any air

     

air pressure, even after the air supply is dis-



by ejected components or materials diverted

by the stream of air pressure exists. High

pressure air escaping suddenly may cause

hearing injury.

Before doing any service, inspection, or main-

tenance to the sprayer, dis-connect it from the

air supply. Never point the nozzle toward

any person or animal. Always wear ANSI ap-

proved safety goggles when using or servic-

ing this tool. Always wear hearing protection

when using or servicing this tool or any air

pressure equipment.

Risk of Injection

Injury.

Air powered spray guns operate at high pres-

sures and high ejection velocities. It is pos-

sible for sprayed material to be injected into

the skin, which can result in serious personal

injury. Highly pressurized sprays may dam-

age property or injure persons.

Never point or spray toward any person or an-



part of your body in front of the spray nozzle

if the spray gun is not disconnected and de-

pressurized. Test spray on scrap material be-

fore spraying work material.

SKU 92126 For technical questions, please call 1-800-444-3353. Page 5

Assembly

First, prepare your air supply.

1. This tool operates within a pressure range of 20 - 50 psi, and consumes 3

CFM of air at 50 psi. Provide yourself with a compressed air supply which

will meet these requirements. DO NOT EXCEED THE 50 PSI MAXIMUM.

Air compressors and related supplies are available from Harbor Freight

Tools.

2. For best results, arrange your compressed air supply to include a ﬁlter

Spray

Gun

and regulator as indicated in the

schematic diagram, below. The

addition of quick connect air

valves, reel and other features will

enhance your air supply.

3. Attach your air hose (not supplied)

to the Spray Gun at the Nipple

(42), at the base of the handle. At

your option, you may ﬁrst attach a

quick connect valve (not supplied)

to the Nipple (42) to attach with

your air hose.

SKU 92126 For technical questions, please call 1-800-444-3353. Page 6

Operation

1. Prepare the work piece to be painted according to paint manufacturer’s

directions. Prepare your paint mixture according to paint manufacturer’s

directions. NOTE: In most cases, paint must be thinned for proper spraying.

Be sure to use a thinner recommended by the paint manufacturer.

2. Fill the Paint Cup no more than 2/3

full with your paint mixture. Press

the Cap onto the Paint Cup to hold

the paint.

3. IMPORTANT: Before applying

paint to your work piece, test

spray a piece of scrap material. In

most cases both the paint mixture

and spray pattern will have to be

adjusted for best results.

4. To spray, squeeze the Trigger (8), as you move the Sprayer past the work

material. Release the Trigger (8) at the end of each pass. Repeat until you

have proper paint coverage of the work piece.

5. When you have completed painting your project, disconnect the Sprayer

from its air pressure source and clean it immediately, following the directions

in the Maintenance section on page 8.

Painting Tips

Successful spray painting is a skill which requires knowledge of your

equipment, familiarity with your paint materials and experience. Differences in

paints, work materials and environmental conditions make every painting task

unique. For best results, practice with your painting mixture on a scrap piece

before beginning to paint your work material.

It is critical that the surface be properly prepared before painting. It will

be difﬁcult to achieve a satisfactory painted surface if the original surface is dirty,

rough or wet.

Paint Mixture:

Each paint mixture will vary. You may use solvent- or water-based paints.

Each of these has a different paint viscosity, and therefore a different ﬂow rate

and drying time. High viscosity is thick, like syrup. Low viscosity is thin, like water.

The purpose of the solvent is to make the paint liquid so it can be ap-

plied. Once applied, the solvent evaporates, leaving the pigment and its binders

SKU 92126 For technical questions, please call 1-800-444-3353. Page 7

Sprayer Controls:

To adjust the spray pattern, loosen the Nozzle Retainer (2) by turning it counter-

clockwise, then rotate the Air Nozzle (1), then retighten the Nozzle Retainer (2).

For a vertical spray pattern, the “ears” of the Air Nozzle (1) should be horizontal.

For a horizontal pattern, the “ears” should be vertical. In other words, the posi-

tion of the Air Nozzle and the spray pattern are opposite.

To control the amount of paint mixture being sprayed, adjust the Fluid Valve

Control Knob (33). Turning the Knob clockwise will reduce the amount of paint,

turning it counterclockwise will increase the amount of paint available. CAU-

TION: Do not overtighten the Knob, as this will cut off the paint supply, and may

damage the Fluid Needle Seats (30). Do not remove the Fluid Adjusting Valve

Assembly (28).

To control the amount of air pressure passing through the Sprayer, adjust the

Air Valve Control Knob (40). Turning the Knob clockwise will reduce the air pres-

sure, and turning it counterclockwise will increase the air pressure. CAUTION:

Do not overtighten the Knob, as this will cut off the air supply, and may damage

the Air Ball Valve (36). Do not remove the Air Adjusting Valve Assembly (34).

To adjust the Trigger Valve Assembly (22), turn the Trigger Valve Adjust Knob

clockwise to reduce the pressure required on the Trigger (8) to operate. Turn the

Trigger Valve Adjust Knob counterclockwise to increase the pressure required

on the Trigger (8) to operate.

in place. The solvent is also used as a clean up medium. Paint mixtures which

are to be sprayed are generally less viscous (thinner) than mixtures which are to

be applied with a brush. Thus you will most often have to add extra solvent to

a paint which is to be sprayed.

When paint is sprayed, it is broken into tiny droplets, then blown by

high-pressure air onto the surface. During this spraying process, the surface of

each paint droplet will begin to dry. When it hits the work material, the droplet

must liquefy again, and mix with the droplets hitting alongside it. Ideally, these

droplets will mix evenly forming a smooth surface.

If the paint mixture is too thick, the droplets will not form a smooth layer,

and the resulting surface can be described as “pebbly” or “orange peel”. If the

paint mixture is too thin, the paint will run, forming long drips before they are

thick enough to form a satisfactory coat. Vertical surfaces are more prone to

“run” than horizontal surfaces due to the effect of gravity.

Paint Mixture (continued)

SKU 92126 For technical questions, please call 1-800-444-3353. Page 8

Maintenance

After each use, thoroughly clean the spray gun.

1. Empty the Paint Cup of paint, and wipe it out with a clean rag.

2. Fill the Paint Cup about halfway with the solvent appropriate for the paint

used.

3. Spray the solvent into an appropriate receptacle for proper disposal.

Continue to spray until paint in the interior of the Spray Gun is ejected and

the solvent spray is clear.

4. Using a clean rag damp with solvent, wipe off the Spray Gun to remove

paint from the exterior.

5. Store your paint sprayer in a clean dry place.

Applying the Paint:

In most cases, it is best to move the paint spray from side to side, over-

lapping the previous paint. In this way you will gradually build up the paint layer

without leaving any obvious edges.

To paint in this way, the spray pattern should be set to vertical.

It is important to prevent excess paint at the beginning and end of each

stroke. Holding the sprayer away from the work piece, squeeze the trigger to

start the spray. Then move the spray gun in to within 14-16 inches of the work

piece. Move the sprayer smoothly across the work piece, keeping a consistent

distance. At the end of each stroke, pull the sprayer away from the work piece

as you release the trigger.

As you work, carefully observe the way the paint accumulates on the

work surface. It is more important to maintain a good paint surface than to form

an opaque (thick) paint coat. You can always apply a second coat to get the

coverage you want. If the surface is ruined, however, you will have to start over

with surface preparation.

If the surface does not smooth out in a few seconds after applying the

paint, your paint mixture is probably too thick. Thin your paint slightly and test

on a piece of scrap material. If the paint goes on very thin and threatens to run,

stop spraying immediately. Add more paint to your mixture to thicken the paint.

SKU 92126 For technical questions, please call 1-800-444-3353. Page 9

Troubleshooting

Problem Possible Causes Suggested Repairs

Paint breaking,



irregular spray.

a) Air Nozzle cracked or worn.

b) Leak at attachment or seal.

c) Needle packing worn out.



e) Vent hole in paint container

clogged.



b) Clean threads and seal and tighten.

c) Clean, repair or replace packing.

d) Add more paint to cup.

e) Clean out vent hole.

One-sided paint pat-

tern.

One of the vent holes in the Air

Nozzle is clogged.

Clean the vent hole.

Small spray area. Bore of Air Nozzle is partially

clogged.

Clean Air Nozzle.

Split Spray Pattern.

Air pressure too high. -

tor in your air pressure system, or by

turning the Air Valve Control Knob

clockwise.

Paint spatters, does

not spray evenly.

a) Paint mixture is too thick.



c) Too much paint in mixture.

d) Dried paint in Air Nozzle.

a) Thin the paint mixture.

b) Increase the air pressure using the

regulator or the Air Valve Control Knob.

Do not exceed 50 psi.



into the sprayer by turning the Fluid

Valve Control Knob clockwise.

d) Clean the Air Nozzle.

Not enough air pres-

sure to spray the

paint.

a) Air Needle partially closed.

b) Dried material in Air Ball Valve or

Air Nozzle.



a) Open Air Ball Valve by turning the air

Valve Control Knob counterclockwise.

b) Clean the dirty part.

c) Adjust the regulator in your system,

or increase air pressure. DO NOT IN-

CREASE PRESSURE BEYOND THE

50 PSI MAX.

Inadequate coverage.

Paint “fogs” on the

workpiece.

Air pressure too high for the viscos-

ity of the paint mixture.



paint to the mixture to increase

viscosity.

Material leaking from

Paint Cup Nipple.

a) Dried material is in threads.

b) Nipple is not tight.

a) Clean threads.

b) Tighten nipple.

Paint leaks from

nozzle when trigger is

operated.

a) Worn Fluid Needle.

b) Dried paint in Air Nozzle.

c) Loose or worn Needle Packing.



b) Clean Air Nozzle.

c) Tighten or replace Needle Packing.

SKU 92126 For technical questions, please call 1-800-444-3353. Page 10

PLEASE READ THE FOLLOWING CAREFULLY

THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS DIAGRAM

IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER NOR

DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE

BUYER THAT HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT

OR THAT HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT. IN

FACT, THE MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY STATES THAT ALL

REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND

LICENSED TECHNICIANS AND NOT BY THE BUYER. THE BUYER ASSUMES ALL RISK

AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT

OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS OR HER INSTALLA-

TION OF REPLACEMENT PARTS THERETO.

Parts List

NOTE: Some parts are listed and shown for illustration purposes only and are not

available individually as replacement parts.

Part Description Qty.

1 Air Nozzle 1

2 1

3 Fluid Nozzle 1

4 Body 1

5 Needle Packing 1

6 Needle Packing Screw 1

7 Trigger Bearing Stud 1

8 Trigger 1

9 Trigger Circlip 1

10 Trigger Seal 1

11  1

12 Trigger Packing 1

13  1

14 Air Valve Seat 1

15 Air Valve Shank 1

16 Air Needle Valve Assembly 1

17 Air Needle 1

18 Air Needle Bushing 1

19 Air Needle Spring 1

20 Air Needle Spring Seat 1

21 Trigger Valve Spring 1

Part Description Qty.

22 Trigger Valve Assembly 1

23 Trigger Valve Bushing 1

24  1

25 Trigger Valve Housing 1

26 Trigger Adjust Bushing 1

27 Trigger Valve Adjust Knob 1

28 Fluid Adjusting Valve Assembly 1

29 Fluid Needle 1

30 Fluid Needle Spring 2

31 Fluid Needle Spring 1

32 Fluid Valve Fastener 1

33 Fluid Valve Control Knob 1

34 Air Adjusting Valve Assembly 1

35 Air Valve Seat 1

36 Air Ball Valve 1

37  1

38 Air Valve Bushing 1

39 Air Valve Fixing Sleeve 1

40 Air Valve Control Knob 1

41 Paint Cup Nipple 1

42 Air Line Nipple 1

SKU 92126 For technical questions, please call 1-800-444-3353. Page 11

Assembly Drawing

SKU 92126 For technical questions, please call 1-800-444-3353. Page 12

90 Day Warranty

Harbor Freight Tools Co. makes every effort to assure that its products meet high

quality and durability standards, and warrants to the original purchaser that this

product is free from defects in materials and workmanship for the period of 90

days from the date of purchase. This warranty does not apply to damage due

directly or indirectly, to misuse, abuse, negligence or accidents, repairs or altera-

tions outside our facilities, criminal activity, improper installation, normal wear and

tear, or to lack of maintenance. We shall in no event be liable for death, injuries to

persons or property, or for incidental, contingent, special or consequential dam-

ages arising from the use of our product. Some states do not allow the exclusion

or limitation of incidental or consequential damages, so the above limitation of

exclusion may not apply to you.

-



To take advantage of this warranty, the product or part must be returned to us

with transportation charges prepaid. Proof of purchase date and an explanation



defect, we will either repair or replace the product at our election or we may elect

to refund the purchase price if we cannot readily and quickly provide you with a

replacement. We will return repaired products at our expense, but if we determine

there is no defect, or that the defect resulted from causes not within the scope of

our warranty, then you must bear the cost of returning the product.



which vary from state to state.

3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • (800)

444-3353

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