Central Pneumatic 90985 Manuel utilisateur

21 PC PAINT SPRAY GUN KIT

ASSEMBLY and OPERATING

INSTRUCTIONS

3491 Mission Oaks Blvd., Camarillo, CA 93011

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

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

Model 90985

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

form without the express written consent of Harbor Freight Tools.

Page 2

SKU 90985

Specifications

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 followed 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 machines or power tools in damp or wet

locations. Don’t expose to rain. Keep work area well lit. Do not use air tools 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 machines, tools, extension cords, or air hoses.

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. Do not wear loose clothing or jewelry as they can be caught in

moving parts. Protective, electrically non-conductive clothes and non-skid footwear

are recommended when working. Wear restrictive hair covering to contain long hair.

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

Wear an ANSI approved dust mask or respirator when working around chemical

dusts, paints and mists. Wear appropriate ear protection.

Operating PSI (Both Guns) 50 PSI

Air Consumption (Gravity Feed Gun) 10.2 CFM @ 50 PSI

Air Consumption (Touch-Up Gun) 5.3 CFM @ 50 PSI

Capacity (Gravity Feed Gun) 20.2 oz.

Capacity (Touch-Up Gun) 8.4 oz.

Air Inlet (Both Guns) 1/4” NPS

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SKU 90985

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

or across running machines or air hoses.

9. Maintain tools with care. Keep tools clean for better and safer performance. Follow

instructions for lubricating and changing accessories. Inspect tool cords and air hoses

periodically and, if damaged, have them repaired by an authorized technician.The

handles must be kept clean, dry, and free from oil and grease at all times.

10. Disconnect air supply. Disconnect air hose when not in use, when changing

accessories, and during maintenance.

11. Remove adjusting wrenches. Check that adjusting wrenches are removed from the

tool before attaching to the air source.

12. Avoid unintentional starting. Be sure the trigger is in the Off position when not in

use and before attaching to the air source. Do not carry any tool with your finger on

the trigger, whether it is attached to the air compressor or not.

13. Stay alert. Watch what you are doing, use common sense. Do not operate any tool

when you are tired.

14. 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 any trigger does not operate properly.

15. Guard against electric shock. Prevent body contact with grounded surfaces such as

pipes, radiators, ranges, and refrigerator enclosures.

16. 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.

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

labels if taking prescription medicine to determine if your judgement or reflexes are

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

18. Use proper size and type extension cord. If an extension cord is required, it must

be of the proper size and type to supply the correct current to the compressor without

heating up. Otherwise, the extension cord could melt and catch fire, or cause electrical

damage to the compressor. Check your compressor’s manual for the appropriate size

cord.

19. Maintenance. For your safety, maintenance should be performed regularly by a

qualified technician.

20. Compressed air only. Never use combustible gas as a power source.

21. 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.

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SKU 90985

22. Clean Sprayer with care. Use non-flammable solvents.

23. Do not smoke while spraying. Most solvents and coatings are highly flammable,

particularly when sprayed.

24. Read all of the information concerning coating products and cleaning solvents.

Chlorinated solvents (e.g. 1-1-1 Trichlorethylene and Methylene Chloride, also known

as methyl chloride) can chemically react with aluminum and may explode. Many paint

sprayers contain aluminum. If you have any doubt about potential chemical reactions,

contact the solvent or coating manufacturer.

25. Materials used when painting or cleaning may be harmful or fatal if inhaled or

swallowed. Only use in an area with adequate ventilation. Use a respirator or mask

when painting or using cleaning solvents.

26. Never release the sprayer lid while the cup is pressurized.

27. Never point a spray gun at a person or animal. Always properly mask all objects

that are not to be painted.

NOTE: Performance of the compressor (if powered by line voltage)

may vary depending on variations in local line voltage.

Extension cord usage may also affect tool performance.

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 parts listed on pages 10, 11, and 12 are included.

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

cover of this manual as soon as possible.

WARNING: The brass componentsof this productcontain lead,achemical

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

other reproductive harm). (California Health & Safety code

25249.5, et seq.)

Page 5

SKU 90985

1. You will need to prepare a 1/4”air connector (sold separately) to connect to the air inlet on

either the Gravity Feed or Touch-up Sprayer.First, wrap the 1/4” air connector (not included)

with pipe thread seal tape before threading it into the Air Inlet (see below).

Connect the 3/8” ID Air Source Hose to the Spray Gun.

2. Set the air pressure on your compressor to 50 PSI. Do not exceed the maximum air

pressure of 50 PSI.

3. Check the air connection for leaks and then disconnect the tool from the air source.

For best service you should incorporate an oiler, regulator, and inline filter, as shown in the

diagram above. Hoses, couplers, oilers, regulators, and filters are all available at Harbor

Freight Tools.

Operation

Sprayer

1/4” NPS

Touch-Up Sprayer Gravity Feed Sprayer

Air Inlet (19a)

Air Inlet (14b)

Fluid Adjust

Knob(11a)

Air Nozzle (1b)

Air Adjust

Valve (17a)

Spray Pattern

Adjust Knob (4a)

Cup (2)

Trigger (5b)

Plastic Cup (6)

Air Regulator (3b)

Adjusting Screw (17b)

Trigger (20a)

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SKU 90985

Operation (continued)

Paint and Materials Preparation

Verify with the paint or materials supplier the percentage of thinning required for use with

these Sprayers. Try thinning a small amount and testing the spray action. Thoroughly mix

material before testing.

Viscosity

Viscosity is the technical term used to indicate the liquidity (thickness or thinness) of the

material being sprayed. Viscosity is measured in the number of seconds required for the

material to pass through the Viscosity Tester (see FIGURE 1).This sprayer can spray mate-

rials with a viscosity range of 10 to a maximum of 60 (DINS). Material with a higher viscosity

can be used only with water soluble products (outdoor and indoor wall applications). Use

high quality products.

To test the viscosity of a material:

1. Place your finger over the output hole of the Viscosity Meter (4).

See FIGURE 1.

2. Fill the Cup on the Viscosity Meter (4) to the top. See FIGURE 1.

3. While holding the Viscosity Meter (4) over the material source

can, let go of the output hole and count the number of seconds it

takes for it to empty completely. The number of seconds

is the viscosity rating.

FIGURE 1

Place finger over

hole in the bottom.

Attach to wall here.

Cup

Guidelines forThinning

Note: These are general guidelines only. Refer to the material manufacturer’s

reccomendations for thinning instructions.

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Page 7

SKU 90985

Operation (continued)

Note: When not in use, hang the Gravity Feed Spray

Gun as shown in FIGURE 2.

Preparing and Operating the HVLP Gravity Spray Gun

Refer to page 5 and the Assembly Drawing on pages 10 and 11.

Note: We recommend you practice on scrap material to adjust and become

familiar with the Gun.

1. Detach the Plastic Cup (2). Insert a Filter (14) into the bottom of the Plastic Cup (2)

with the stem end pointing into the cup. This will prevent dirt and debris from entering

the HVLP Gravity Feed Gun (1).

2. Mount the Plastic Cup (2) to the HVLP Gravity Feed Gun (1). Make sure that the

Plastic Cup (2) is securely attached. Fill the cup with material that has already been

checked for viscosity (see page 6). Close to Cup (2) tightly to avoid leakage.

3. Connect the air source hose to the Air Inlet (19a). Turn on your air compressor. Do not

exceed the 50 PSI maximum.

4. Pull the Trigger (20a) slowly and move the Spray Gun in parallel strokes to the object

being painted. Keep the distance from the object being painted at 4” to 12”. This may

slightly differ depending on the flow adjustment and the material being sprayed.

5. Release theTrigger (20a) after each forward movement; pull theTrigger (20a) again on

the return movement.

6. When using a vertical pattern, move the Spray Gun in a horizontal motion; with a

horizontal pattern move the Spray Gun in a vertical motion. A round pattern requires a

greater distance from the object being painted.

7. When finished, release the Trigger (20a) and disconnect from the air source. The

Plastic Cup (2) and Spray Gun may still hold air pressure, fire the Spray Gun toward

scrap material until all of the pressure is expended. Open the Cap on the Plastic Cup

(2) before removing the Lid.

Note: Gun adjustments on page 8.

Preparing the area

1. Mask all objects you do not want sprayed.

2. Lay the appropriate size Tack Cloth (16) on the

floor,andattachTackCloths(16)tothe surrounding

walls.

FIGURE 2

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SKU 90985

Operation (continued)

HVLP Gravity Gun Adjustments

Refer to page 5 and the Assembly Drawing on page 11.

Note: We recommend you practice on scrap material to learn the fine tune

adjustments.

1. To change the spray pattern, turn the Spray Pattern Adjust Knob (4a).

2. To regulate the amount of material entering the Spray Gun, adjust the Fluid Adjust

Knob (11a).

3. To fine tune the air flow, adjust the Air Adjust Knob (17a).

Touch-up Sprayer Adjustments

Refer to page 5 and the Assembly Drawing on page 12.

Note: We recommend you practice on scrap material to learn the fine tune

adjustments.

1. To change the spray pattern, turn the Air Nozzle (1b).

2. To regulate the amount of material entering the Spray Gun, adjust the Adjusting Screw

(17b).

3. To fine tune the air flow, adjust the Air Regulator (3b).

Preparing and OperatingTouch-up Gun

Refer to page 5 and the Assembly Drawing on pages 10 and 12.

Note: We recommend you practice on scrap material to adjust and become

familiar with the Gun.

1. Detach the Plastic Cup (6). Fill the cup with material that has already been checked for

viscosity (see page 6). Close the Plastic Cup (6) tightly to avoid leakage.

2. Mount the Plastic Cup (6) to theTouch-up Gun (5). Make sure that the Plastic Cup (6)

is securely attached.

3. Connect the air source hose to the Air Inlet (14b). Turn on your air compressor. Do not

exceed the 50 PSI maximum.

4. Press the Trigger (5b) slowly and move the Spray Gun in parallel strokes to the object

being painted. Keep the distance from the object being painted at 4” to 12”. This may

slightly differ depending on the flow adjustment and the material being sprayed.

5. Release theTrigger (5b) after each forward movement;press theTrigger (5b) again on

the return movement.

6. When using a vertical pattern, move the Spray Gun in a horizontal motion;with a hori-

zontal pattern move the Spray Gun in a vertical motion. A round pattern requires a

greater distance from the object being painted.

7. When finished, release the Trigger (5b) and disconnect from the air source. As the

Plastic Cup (6) and Spray Gun may still hold air pressure, fire the Spray Gun toward

scrap material until all of the pressure is expended.

Page 9

SKU 90985

Troubleshooting

Maintenance

Disconnect the tool from the air source.

1. Remove the Spray Gun Plastic Cup (2 or 6).

2. Pour residual paint into the paint container and seal it.

3. Pour non-flammable paint thinner into the Plastic Cup (2 or 6). If water based paint was

used, you can use water.

4. Secure the Plastic Cup (2 or 6) to the appropriate Gun and shake the liquid in the cup.

5. Connect to the air source and turn on the air compressor.

6. Spray the liquid onto a piece of scrap material until the

spray material is free of paint.

7. Repeat if necessary.

8. After following the above procedure, use the

brush and wire set to further clean the

Spray Gun. Brush & Wire Set

PROBLEM

Paint drips on the

object being painted

Paint Application

uneven or irregular

Spray Gun not

operating

CAUSE

1. Paint too diluted

2. Improper spray adjustment

3. Too much air flow

4. Holding Trigger too long

5. Spraying too close

1. Paint too diluted

2. Improper spray adjustment

3. Air flow too weak

4. Spray movement too fast

5. Gun clogged

6. Spray distance too far

7. Nozzle set too fine

1. Paint not thinned enough

2. Spray Gun clogged

3. Air Hose is broken

4. Air Filter clogged

5. Paint Cup not fully closed

REMEDY

1. Add undiluted product

(check viscosity)

2. Reduce paint flow by tightening

Paint Adjustment Screw

3. Reduce air flow by turning Air

Adjustment Screw down

4. Release Trigger on back stroke

5. Increase distance between

nozzle and object

1. Add undiluted product

(check viscosity)

2. Increase paint flow by loosening

Paint Adjustment Screw

3. Increase air flow by loosening

Air Adjustment Screw

4. Move Spray Gun more slowly

5. Clean components

6. Spray closer to object

7. Adjust Nozzle

1. Add thinner (check viscosity)

2. Clean components

3. Replace Air Hose

4. Clean or replace Air Filter

5. Close paint cup

Page 10

SKU 90985

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

individually as replacement parts.

PLEASE READTHE FOLLOWING CAREFULLY

THEMANUFACTURERAND/OR DISTRIBUTORHAS PROVIDEDTHEPARTSDIAGRAMINTHIS

MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER NOR DISTRIBU-

TORMAKESANYREPRESENTATION ORWARRANTYOFANYKINDTOTHE BUYERTHATHE

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/ORDISTRIBUTOREXPRESSLYSTATESTHATALLREPAIRSANDPARTSREPLACEMENTS

SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSEDTECHNICIANS AND NOT BYTHE

BUYER. THE BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER

REPAIRS TOTHE ORIGINAL PRODUCT OR REPLACEMENT PARTSTHERETO, OR ARISING

OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTSTHERETO.

Main Parts List and Assembly Drawing

Part No. Description Qty. Part No. Description Qty.

1 HVLP Gravity Spray Gun 1 9 Brush 1

2 20.2 oz. Plastic Cup 1 10 Brush 1

3 Gun Holder 1 11 Needle 1

4 Viscosity Measure 1 12 Plastic Tube 1

5 Touch-up Gun 1 13 Plastic Grip Brush 1

6 8.4 oz. Plastic Cup 1 14 Filter 3

7 Wrench 1 15 Brass Nipple 2

8 Brush 1 16 Tack Cloth 3

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