Graco 308491B TEXTURE AIRLESS SPRAY GUN Owner's Manual

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Spray from the gun, leaks or ruptured components can inject fluid into your body and cause exĆ tremely serious injury, including the need for amputation. Fluid splashed in the eyes or on the skin can also cause serious injury.

D Fluid injected into the skin may look like just a cut, but it is a serious injury.

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D Do not point the spray gun at anyone or any part of the body.

D Do not put hand or fingers over the spray tip.

D Do not stop or deflect fluid leaks with your hand, body, glove or rag.

D Do not blow back" fluid; this is not an air spray system.

D Always have the tip guard and the trigger guard on the spray gun when spraying.

D Check the gun diffuser operation weekly. Refer to the gun manual.

D Be sure the gun trigger safety operates before spraying the gun.

D Lock the gun trigger safety when you stop spraying.

D Follow the * ++-* %$ ! *( -* on page 6 if the spray tip clogs and before cleaning, checking or servicing the equipment.

D Tighten all fluid connections before each use.

D Check the hoses, tubes and couplings daily. Replace worn or damaged parts immediately. PerĆ manently coupled hoses cannot be repaired.

D Handle and route hoses and tubes carefully. Keep hoses and tubes away from moving parts and hot surfaces. Do not use the hoses to pull equipment. Do not expose Graco hoses to temĆ peratures above 180 _ F (82 _ C) or below -40 _ F (-40 _ C).

Improper grounding, poor air ventilation, open flames or sparks can cause a hazardous condition and result in a fire or explosion and serious injury.

D Ground the equipment and the object being sprayed. See *(-' ,# .+, & on page 6.

D If there is any static sparking while using the equipment, +,() +)*.$'" $&& $, %.

. Identify and correct the problem.

D Provide fresh air ventilation to avoid the buildup of flammable vapors from solvent or the fluid being sprayed.

D Do not smoke in the spray area.

D Extinguish all open flames or pilot lights in the spray area.

D Do not turn on or off any light switch in the spray area.

D Electrically disconnect all equipment in the spray area.

D Keep the spray area free of debris, including solvent, rags and gasoline.

D Do not operate a gasoline engine in the spray area.

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Equipment misuse can cause the equipment to rupture, malfunction or start unexpectedly and reĆ sult in serious injury.

This equipment is for professional use only.

Read all instruction manuals, tags, and labels before operating the equipment.

Use the equipment only for its intended purpose. If you are in doubt about this, call Graco TechĆ nical Assistance at 1-800-543-0339.

Do not alter or modify this equipment.

Check equipment daily. Repair or replace worn or damaged parts immediately.

Do not exceed the .0( #"/ "3(+2+ -/)(,& /%002/% of the equipment, or the maximum working pressure of any accessory used with it.

Do not move or lift pressurized equipment.

Use fluids or solvents which are compatible with equipment wetted parts. Refer to the %$'4

,($"* "1" section on page 16 and all equipment manuals. Read the fluid and solvent manufacĆ turer's warnings.

Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or fluids containing such solvents in pressurized aluminum equipment. Such use could result in a chemical reaction, with the possibility of explosion.

Fluid hoses must have spring guards on both ends to protect them from rupture caused by kinks or bends at or close to the couplings.

Comply with all applicable local, state and national fire, electrical and other safety regulations.

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Improper handling of hazardous fluids or inhaling toxic fumes can cause extremely serious injury, even death, due to splashing in the eyes, ingestion, or bodily contamination.

Know the specific hazards of the fluid you are using.

Store hazardous fluid in an approved container. Dispose hazardous fluid according to all local, state and national guidelines.

Wear appropriate clothing, gloves, eyewear and respirator.

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Keep the walletĆsized warning card provided with this gun with the operator at all times. The card contains important treatment information should an injection injury occur. Additional cards are available at no charge from Graco Inc.

1. The pressure drain valve assists in relieving fluid pressure in the displacement pump, hose and gun; triggering the gun to relieve pressure may not be sufficient.

2. Strain the fluid you are spraying if it contains particles which could clog the spray tip.

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To reduce the risk of static sparking, ground the pump and all other equipment used or located in the spray area. Check your local electrical code for detailed grounding instructions for your area and type of equipment. Also follow the grounding instructions provided in your pump or sprayer manual. The gun obtains grounding through conĆ nection to a properly grounded fluid hose and pump or sprayer. Also read on page 4.

To reduce the risk of serious injury, including fluid injection, splashing fluid or solvent in the eyes or on the skin, follow this procedure when you are instructed to relieve pressure, when you stop spraying, shut off the pump, check or service any system equipment, or install, clean or change spray tips.

1. Lock the gun trigger safety.

2. Shut off the power to the pump.

3. Unlock the gun trigger safety.

4. Hold a metal part of the gun firmly to a grounded metal pail. Trigger the gun to relieve pressure.

5. Lock the gun trigger safety.

6. Open the drain valve, having a container ready to catch the drainage. Observe the pressure gauge.

The gauge reads 0 psi/bar when fully drained.

Leave the drain valve open until you are ready to spray again.

If you suspect that the spray tip or hose is completely clogged or that pressure has not been fully relieved, very slowly loosen the tip guard retaining nut or hose end coupling and relieve pressure gradually. Clean the tip or hose obstruction.

1

2

Gun trigger safety shown locked

Gun trigger safety shown unlocked

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1. To lock the gun trigger safety, turn the safety to a right angle with the gun body. See Fig. 1.

2. To unlock the gun trigger safety, push the safety out and turn it parallel with the gun body.

See Fig. 1.

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6. If adjusting the pressure does not give a good spray pattern, relieve pressure and then try another tip size.

To reduce the risk of component rupture, and seriĆ ous injury, including fluid injection, do not exceed the gun's +-$ , 1$(/( *,&$)"

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or the maximum working pressure of lowest rated component in the system.

7. Use a fullĆopen, fullĆclose trigger action. Hold the gun about 14 in. (350 mm) from and at right angles to the work surface. Don't swing the gun in an arc. Practice to find the best length and speed of stroke.

30

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1. To adjust the spray pattern direction, relieve presĆ sure. Loosen the tip guard retaining nut (B). Turn the tip guard/tip groove horizontally (C) for a horiĆ zontal pattern and vertically (A) for a vertical pattern. Tighten the nut. See Fig. 3.

2. The spray tip orifice and spray angle determines the coverage and size of pattern. When more coverage is needed, use a larger spray tip rather than increasing fluid pressure.

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1. Connect an electrically conductive fluid hose (A) to the gun inlet. See Fig. 2.

2. With no tip installed, start the pump. Flush the pump according to the instructions supplied with it. Use the lowest pressure possible. Prime the system with the material.

3. Relieve pressure.

4. Install the SwitchTip (8) and tip guard (30). Follow the instructions in the manual, supplied.

See Fig. 2.

5. Start the pump. Trigger the gun onto test paper.

Adjust the fluid pressure until the spray is completely atomized. Use the lowest pressure necessary to get the desired results. Higher presĆ sure may not improve the spray pattern and will cause premature tip and pump wear.

A

Openings in the tip guard reduce paint buildup on the guard while spraying. Damage to the sharp edges of the openings causes paint to collect at that area. Never hang the gun by the tip guard.

B

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1. Stop spraying immediately.

2. Lock the gun trigger safety. Rotate the RAC IV tip handle back 180 . See Fig. 4.

To reduce the risk of fluid injection or splashing in the eyes or on the skin, do not hold a hand, body or rag in front of the spray tip when cleaning or checking a clogged tip. Point the gun toward the ground or into a waste container when checking to see if the spray tip is cleared.

Do not try to blow back" paint; this is not an air spray gun.

Do not wipe fluid buildup off the gun or spray tip until pressure is relieved.

3. Unlock the gun trigger safety. Trigger the gun into a pail or onto the ground to remove the clog.

4. Lock the gun trigger safety. Rotate the tip handle to the spraying position. See Fig. 4.

5. If the tip is still clogged, engage the gun trigger safety, shut off the sprayer and disconnect the power source, and open the pressure drain valve to relieve pressure. Clean the spray tip as shown in manual 308-644, supplied with the RAC IV.

Never soak the entire gun in solvent. Prolonged exposure to solvent can ruin the packings.

To reduce the risk of serious injury, whenever you are instructed to relieve pressure, follow the ) **,) %$ !

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1. Relieve pressure.

2. Clean the front of the tip frequently during the day to help reduce buildup. Also clean the tip and tip guard at the end of each work day. Use a solventĆ soaked brush to clean the spray tip.

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Spraying position shown.

Turn handle 180° and trigger gun to clear clog.

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The Standard Needle and Seat Kit, 237-398, has the number stamped on the needle and seat. The seat ( + have a diffuser.

To reduce the risk of serious injury, whenever you are instructed to relieve pressure, follow the * ++-* &$ !

*( -* on page 6.

The optional Non-diffused Needle and Seat Kit,ą

237-260, has the number stamped on the needle and seat. The seat ( + '(, have a diffuser.

The diffuser, located in the valve seat, creates an irregular spray pattern when the gun is sprayed without a tip guard, such as during cleaning. This reduces the risk of an injection injury.

If you are using the optional Kit 237-260, you must take extra precautions to keep your hands and body away from the nozzle of the gun.

Always have the tip guard in place during regular spraying operations.

1. Relieve pressure.

2. Remove the tip guard and spray tip.

3. Start the sprayer and adjust it to the lowest pressure.

4. Aim the gun into a grounded metal pail while holding it firmly to the pail. Trigger the gun. If the fluid emitted $+ '(, diffused into an irregular stream, replace the entire needle kit immediately.

See Fig. 5.

1 Irregular spray pattern

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Check the diffuser operation weekly. The gun diffuser/ seat (2a) breaks up spray and reduces the risk of fluid injection when the tip is not installed. Perform the test below. If it fails, replace the entire Needle and Seat

Kit. Diffuser/seats and needles are not sold sepaĆ rately; using old parts with new ones will result in leakage.

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To reduce the risk of serious injury from fluid injecĆ tion or splashing, always follow the ( ))+(

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The needle and seat are available only as a kit which includes items 2a to 2e.

The Standard Needle and Seat Kit, 237-398, has the number stamped on the needle and seat.

A Non-diffused Needle and Seat Kit, 237-260, has the number stamped on the needle and seat. It is recommended only for use with mastics, sealers and other high viscosity materials which have fillers that cannot pass through the standard seat's diffuser.

Use high quality, general purpose grease where grease is indicated.

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If replacing only the needle and seat, Step 4 and 5 are not required. However, removing them allows you to clean the gun more thoroughly.

1. Relieve pressure.

21

2a

2b

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3. Unscrew the valve seat (2a). Remove the gasket

(2b). See Fig. 7.

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29

27

25

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4. Remove one e-clip (27). Push out the pin (18).

Remove the screw (29), pivot pin (28), and trigger

(25). See Fig. 8.

30

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2. Disconnect the fluid hose (A). Remove the tip guard (30). Unscrew the spring screw (21) about

1/4 in. (7 mm) to release spring tension.

See Fig. 6.

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5. Remove the screws (24). See Fig. 9.

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2c

2e

2d

22

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8. Remove the needle (2c). Unscrew the seal retainer

(2d). Remove the seal (2e). See Fig. 12.

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6. Loosen the setscrew (15). Pull the fluid housing (22) away from the gun body (1). See Fig. 10.

Clean all parts and cavities thoroughly with a compatĆ ible solvent. Dry with a rag or compressed air.

Replace any parts that are worn or damage.

16

17

1 Torque to 20-25 ftĆlb (27-34 N.m)

2 Lips of seal must face into housing

3 Grease inner cavity of housing

1

2

3

2d

2e

22

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7. While supporting the spring guide (16) to prevent bending the needle, loosen the setscrews (17).

Remove the spring guide (16). See Fig. 11.

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1. Lightly grease the inner cavities of the fluid housĆ ing (22). Install the small seal (2e) so the lips face into the fluid housing cavity. Install the seal retainer (2d) and torque to 20-25 ftĆlb (27-34

N.m). See Fig. 13.

2c 1 Grease this side 19

20

1

22

2. Lightly grease the small end of the needle (2c) and then guide it into the large end of the fluid housing (22).

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1

2

Grease the threads

Torque to

20-25 ft-lb

(27-34 N.m)

2a

2b

22

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5. If the spring (19) was removed, grease the spring adjuster (20) and place the spring. Drop this assemĆ bly into the gun body (1). See Fig. 17.

1

2

Torque to 30-40 in-lb

(3.4-4.5 N.m)

Fill cavity with petroleum jelly

22

1

03977

3. Place the gasket (2b) on the valve seat (2a).

Grease the threads of the valve seat (2a). Screw the valve seat into the fluid housing (22). Torque to 20-25 ft-lb (27-34 N.m). See Fig. 15.

1

2

3

Seat against needle stem

Apply light strength Loctite ;

Torque alternately and evenly to

10-15 in-lb (1.1-1.7 N.m)

Fill cavity with petroleum jelly

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6. Push the fluid housing (22) onto the gun body (1) until fully seated. Tighten the setscrew (15) to

30-40 in-lb (3.4-4.5 N.m). Fill the setscrew cavĆ ity with petroleum jelly. See Fig. 18.

16

17

1

2

3

3

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4. Install the spring guide (16) and seat it against the needle. Loosely thread both setscrews (17) into the spring guide, then alternately and evenly tighten the setscrews to 10-15 inĆlb (1.1-1.6 N.m). Fill the setscrew cavities with petroleum jelly.

7. Install the screws (24). See Fig. 19.

24

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28

18

25

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8. Position the trigger (25) on the gun body. Insert the pivot pin (28) into the top hole (A) and secure with the screw (29) on the other side. Place an e-clip (27) on one end of the trigger pin (18).

Slide the pin through lower trigger holes and through the slot (B) in the spring guide (16) (turn the spring guide to align, as needed). Install the other e-clip (27). See Fig. 20.

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B,16 1. Lock the gun trigger safety. Connect a hose to the gun. Start and prime the pump.

29

27

2. Release the gun trigger safety. Trigger the gun into a waste container. Release the trigger to be sure the gun immediately stops spraying and that there are no leaks.

3. If the gun has a diffuser, check the diffuser using the procedure on page 10.

4.

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See Fig. 22.

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Turn in until screw stops 21

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9. If it was removed, install the spring tension screw

(21) at the rear of the gun. Then, turn the screw in until it stops. See Fig. 21.

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Converts the Texture Spray Gun 237-476 to air spray.

Kit includes air atomizer head with retaining ring, 1/4 and 3/8 air nozzles, 3/16 and 1/4 material tips, gasket, two air control valves, RAC IV tip (235), air hose and two air tubes.

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Replacement air on/off valve for the Air Atomizer Kit

237-477.

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Replacement housing assembly for the Air Atomizer

Kit 237-477.

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Replacement air control valve for the Air Atomizer Kit

237-477.

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Replacement air hose (3/8 x 50 ft) for the Air Atomizer

Kit 237-477.

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28

22

27

2e

2d

18

16

19

20

15

2a

2b

2c

17

30

36

21

25

29

27

1

8

21

22

24

25

17

18

19

20

27

28

2e

8

15

16

2a

2b

2c

2d

# %' # &% $' #"

1

2

237-680 TEXTURE GUN BODY

237-260 NEEDLE AND SEAT KIT

(parts not sold separately)

.VALVE SEAT

.GASKET

.NEEDLE

.SEAL RETAINER

.SEAL

221-631 SwitchTip, size 631

102-207 SETSCREW , 1/4-20

189-960 SPRING GUIDE

112-729 SETSCREW, soc hd

189-958 TRIGGER PIN

102-924 SPRING

189-990 SPRING ADJUSTER

110-637 ADJUSTING SCREW

237-694 FLUID HOUSING

112-774 SCREW, 1/4-20

189-974 GUN TRIGGER

112-410 E-CLIP

187-965 PIVOT PIN

24

04730

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1

1

2

1

1

1

1

1

2

1

2

1

1

1

1

1

1

1

1

1

# %' # &% $' #"

29

30

34

35

36

203-953 SCREW, hex washer hd, 10-24

237-162 HEAVY DUTY 510 RAC

TIP GUARD

187-346 WARNING SHEET not shown

222-385 WARNING CARD not shown

112-789 WASHER, flat

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Replacement Danger and Warning labels, tags and cards are available at no cost.

1

1

2

1

1

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Use in place of Ref. No. 2, above.

Stamped with the number

[fluid orifice size is 0.125 in. (3.2 mm)]

Recommended only for use with mastics, sealers and other high viscosity materials which have fillers that cannot pass through the standard seat's diffuser.

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Maximum working pressure

Fluid orifice size

Inlet size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fluid tube inside diameter

Wetted parts

. . . . . .

. . . . . . . . . . . . . . . . .

3000 psi (210 bar)

0.090 in. (2.3 mm)

. . . . . . . . . .

1/4 npt (m)

0.245" (6.2 mm)

Tungsten carbide, polypropylene, polyethylene

Loctite is a registered trademark of the Loctite CorĆ poration.

. . . . . . . . . . . . . . . . . . . . .

17-4PH passivated stainless steel,

4&(2 -21*

70'*45

, contact your Graco distribĆ utor, or call this number to identify the distributor closest to you: 2// 4** service repair information or assistance regarding the application of

Graco equipment: 2// 4**

.0*15.215

Weight

Length

Height

. . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

25.7 oz (729 gr)

8.25" (210 mm)

8.0" (203 mm)

-* 4&(2 #&44&169 &1) .5(/&.0*45

# %

Graco warrants all equipment manufactured by it and bearing its name to be free from defects in material and workmanship on the date of sale by an authorized Graco distributor to the original purchaser for use. As purchaser's sole remedy for breach of this warĆ ranty, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment proven defective.

This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco's written recomĆ mendations.

This warranty does not cover, and Graco shall not be liable for, any malfunction, damage or wear caused by faulty installation, misĆ application, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of non-

Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility with Graco equipment of structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture, installaĆ tion, operation or maintenance of structures, accessories, equipment or materials not supplied by Graco.

This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for verification of the claim. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The equipment will be returned to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect in material or workmanship, repairs will be made at a reasonable charge, which charges may include the costs of parts, labor and transportation.

The terms of this warranty constitute purchaser's sole and exclusive remedy and are in lieu of any other warranties (express or implied), .1(/7).1, 8&44&169 2+ 0*4(-&16&'./.69 24 8&44&169 2+ +.61*55 +24 & 3&46.(7/&4 374325* , and of any non-contractual liabilities, including product liabilities, based on negligence or strict liability. Every form of liability for direct, special or consequential damages or loss is expressly excluded and denied. In no case shall Graco's liability exceed the amount of the purchase price. Any action for breach of warranty must be brought within two (2) years of the date of sale.

! " % # %

Graco makes no warranty, and disclaims all implied 8&44&16.*5 2+ 0*4(-&16&'./.69 &1) +.61*55 +24 & 3&46.(7/&4 374325* , with respect to accessories, equipment, materials, or components sold but not manufactured by Graco. These items sold, but not manufactured by Graco (such as electric motor, switches, hose, etc.) are subject to the warranty, if any, of their manufacturer.

Graco will provide purchaser with reasonable assistance in making any claim for breach of these warranties.

&/*5 ++.(*5 Atlanta, Chicago, Dallas, Detroit, Los Angeles, Mt. Arlington (N.J.)

24*.,1 ++.(*5 Canada; England; Korea; Switzerland; France; Germany; Hong Kong; Japan

: $ : :

PRINTED IN U.S.A.ą 308-491 1/95, Revised January 1998