Graco 307912Y Model PRO 3500 Electrostatic Air Spray Gun Owner's Manual

INSTRUCTIONS-PARTS LIST

This manual contains important warnings and information.

READ AND KEEP FOR REFERENCE.

INSTRUCTIONS

Model PRO 3500sc

Electrostatic Air Spray Gun

65 kV, MANUAL GUN

100 psi (7 bar, 0.7 MPa) Maximum Working Pressure

Part No. 222–300, Series B

With Two–Finger Trigger

Part No. 222–600, Series B

With Four–Finger Trigger

307–912

Rev. Y

Supersedes Rev. V and PCN W

Part No. 222–300 shown

NOTE: Any modification of genuine Graco parts or replacement of parts with non-Graco parts will void agency approvals.

U.S. PATENT NO. 4,290,091; 4,219,865; 4,497,447; 4,462,061; 4,660,774 ; D313,064; 4,978,075

Patented 1986, 1987 Canada

Brevete 1986, 1987

U.K. PATENT NO. 2,147,158; 2,142,559B; 2,140,327B

French Patent No. 89 16305

Other U.S. and Foreign Patents Pending

GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441

COPYRIGHT 1989, GRACO INC.

Graco Inc. is registered to I.S. EN ISO 9001

Table of Contents

Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

How the Electrostatic Air Spray Gun Works . . . .

5

5

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installing the System . . . . . . . . . . . . . . . . . . . . . . . .

Warning Signs . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Ventilate the Spray Booth . . . . . . . . . . . . . . . . . . . .

Non-hazardous Area

Hazardous Area

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

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

Connect the Air Line . . . . . . . . . . . . . . . . . . . . . . . .

Connect the Exhaust Tube . . . . . . . . . . . . . . . . . . .

Connect the Fluid Line

Ground the System

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

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

Check the Electrical Grounding . . . . . . . . . . . . . . .

7

7

6

6

5

5

5

5

7

8

9

Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Prepare the Gun for Service . . . . . . . . . . . . . . . . . . . .

Air Cap/Nozzle/Resistor Stud Replacement

Electrode Replacement

. . . . . .

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

Barrel Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fluid Packing Removal . . . . . . . . . . . . . . . . . . . . . . . .

Fluid Packing and Needle Repair . . . . . . . . . . . . . . . .

Power Cartridge Replacement . . . . . . . . . . . . . . . . . .

Turbine Alternator Replacement . . . . . . . . . . . . . . . .

Barrel Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fan Air Adjustment Valve Repair . . . . . . . . . . . . . . . .

Fluid Adjustment Assembly Repair

Air Trigger Valve Repair

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

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

Atomizing Air Valve Removal and Replacement

ES ON-OFF Valve Repair

. . .

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

24

25

26

27

28

22

22

22

23

28

29

30

31

31

32

Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pressure Relief Procedure . . . . . . . . . . . . . . . . . .

Filter the Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating Checklist . . . . . . . . . . . . . . . . . . . . . . .

Selecting a Fluid Nozzle and Air Cap . . . . . . . . .

Operating the Spray Gun

Shutdown

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

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

11

11

11

11

12

12

14

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

The Graco Warranty and Disclaimers . . . . . . . . . . 40

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Daily Care and Cleaning . . . . . . . . . . . . . . . . . . . .

Clean the Air Cap and Fluid Nozzle

Flush the Spray Gun

. . . . . . . . . .

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

14

14

15

15

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Spray Pattern Troubleshooting . . . . . . . . . . . . . .

Gun Operation Troubleshooting

Electrical Troubleshooting

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

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

16

16

17

18

Electrical Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Test Gun Resistance . . . . . . . . . . . . . . . . . . . . . . .

Test Power Supply Resistance

Test Resistor Stud Resistance

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

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

19

19

20

20

Graco Phone Number . . . . . . . . . . . . . . . . . . . . . . . . 40

Symbols

Warning Symbol

WARNING

This symbol alerts you to the possibility of serious injury or death if you do not follow the instructions.

Caution Symbol

CAUTION

This symbol alerts you to the possibility of damage to or destruction of equipment if you do not follow the corresponding instructions.

2 307–912

WARNING

FIRE, EXPLOSION, AND ELECTRIC SHOCK HAZARD

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

D Electrostatic equipment must be used only by trained, qualified personnel who understand the requirements stated in this instruction manual.

D Ground the equipment, personnel in or close to the spray area, the object being sprayed, and all other electrically conductive objects in the spray area. See Ground the System on page 8.

D Check the spray gun resistance daily. See Test Gun Resistance, page 19.

D If there is any static sparking while using the equipment, stop spraying immediately. Identify and correct the problem.

D Provide fresh air ventilation to avoid the buildup of flammable or toxic vapors. Interlock the gun turbine air supply to prevent operation of the power supply unless the ventilating fans are on. See

Ventilate the Spray Booth on page 5.

D When flushing or purging electrostatic equipment, use solvents with a flash point equal to or greater than that of the fluid being sprayed.

D To clean the exterior of the electrostatic equipment , use solvents with a flash point higher than

100 _ F (38 _ C).

D Use only non-sparking tools to clean residue from the booth and hangers.

D Do not flush the system with the gun electrostatics turned on.

D Do not turn on the gun electrostatics until all solvent is removed from the system.

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

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

D Do not store any flammable fluids in the spray area.

D Do not turn on or off any light switch in the spray area while operating or if fumes are present.

D Do not smoke in the spray area.

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

TOXIC FLUID HAZARD

Hazardous fluids or toxic fumes can cause a serious injury or death if splashed in the eyes or on the skin, swallowed, or inhaled.

D Know the specific hazards of the fluid you are using. Read the fluid manufacturer’s warnings.

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

D Wear appropriate protective clothing, gloves, eyewear, and respirator.

Warnings are continued on the next page.

307–912 3

WARNING

PRESSURIZED EQUIPMENT HAZARD

Spray from the gun, hose leaks, or ruptured components can splash fluid in the eyes or on the skin and cause a serious injury.

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

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

D Follow the Pressure Relief Procedure on page 11 whenever you: are instructed to relieve the pressure; stop spraying; clean, check, or servicing the equipment; and install or clean the fluid nozzles.

D Tighten all the fluid connections before operating the equipment.

D Check the hoses, tubes and couplings daily. Replace worn, damaged, or loose parts immediately.

Permanently coupled hoses cannot be repaired; replace the entire hose.

EQUIPMENT MISUSE HAZARD

INSTRUCTIONS

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

D This equipment is for professional use only.

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

D Use the equipment only for its intended purpose. If you are uncertain about usage, call your Graco distributor.

D Do not alter or modify this equipment. Use only genuine Graco parts and accessories.

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

D Do not exceed the maximum working pressure of the lowest rated system component. This equipment has a 100 psi (7 bar, 0.7 MPa) maximum working air and fluid pressure.

D Use fluids that are compatible with the equipment wetted parts. See the Technical Data section of all the equipment manuals. Read the fluid manufacturer’s warnings.

D Route the hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose Graco hoses to temperatures above 180 _ F (82 _ C) or below –40 _ F (–40 _ C).

D Do not use the hoses to pull equipment.

D Wear hearing protection when operating this equipment.

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

4 307–912

Introduction

How the Electrostatic Air Spray Gun Works

The air hose supplies air to the spray gun. Part of the air operates the turbine and the rest of the air atomizes the fluid being sprayed. The turbine generates power, which is converted by the power cartridge, to supply high voltage current to the gun’s ionizing electrode.

The pump supplies fluid to the hose and gun, where the fluid is electrostatically charged as it passes the electrode. The charged fluid is attracted to the grounded workpiece, wrapping around and evenly coating all surfaces.

Installing the System

Installation

WARNING

FIRE, EXPLOSION, AND

ELECTRIC SHOCK HAZARD

Installing and servicing this equipment requires access to parts which may cause electric shock or other serious injury if work is not performed properly.

Warning Signs

Mount warning signs in the spray area where they can easily be seen and read by all operators. An English

Warning Sign is provided with the gun. Additional

English, French, German, and Spanish signs are available at no charge. See Accessories to order them.

Ventilate the Spray Booth

Do not install or service this equipment unless you are trained and qualified.

Be sure your installation complies with National,

State and Local codes for the installation of electrical apparatus in a Class , Group D

Hazardous Location.

WARNING

FLAMMABLE OR TOXIC

VAPOR HAZARD

Provide fresh air ventilation to avoid the buildup of flammable or toxic vapors. Do not operate the gun unless ventilation fans are operating.

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

Fig. 1 shows a typical electrostatic air spray system.

It is not an actual system design. The particular type and size system for your operation must be custom designed for your needs. For assistance in designing a system, contact your Graco distributor.

Electrically interlock the gun air supply with the ventilators to prevent gun operation without ventilating fans operating. Check and follow all National, State, and

Local codes regarding air exhaust velocity requirements.

NOTE: High velocity air exhaust will decrease the operating efficiency of the electrostatic system. Air exhaust velocity of 100 ft/min (31 linear meters/minute) should be sufficient.

307–912 5

Installation

KEY

A Main Air Supply Line

B* Ventilation Fan Interlock Solenoid Valve

C* Main Air Supply Shutoff Valve (bleed-type)

D Air & Water Separator

E* Pump Air Supply Shutoff Valve (bleed-type)

F Air Line Lubricator

G Air Pressure Regulator

H Pump

J* Pump Ground Wire

K Fluid Filter

L Fluid Supply Line Shutoff Valve

M Fluid Pressure Regulator

N Fluid Supply Line

O Air Filter (20 micron)

A

N

P Air Supply Line Shutoff Valve

Q* Air Hose Ground Wire

R* Graco Electrically Conductive Air Hose

S Electrostatic Spray Gun

T Air Line Drain Valve

U* Fluid Drain Valve

V Gun Air Inlet

W Gun Fluid Inlet

X Gun Exhaust Tube

* Required for safe operation. Must purchase separately. See

Accessories. NOTE: Solenoid Valve (B) is not offered as a Graco accessory.

M

ES ON-OFF Lever

1 is ON 0 is OFF

S

B* C* D

E*

G F

O

H

J*

V

G

X

W

Fig. 1

P

K L

R

U*

Q*

T

Non-hazardous Area

The air supply to the gun must be electrically interlocked with the ventilators to prevent the power supply from operating without ventilating fans on.

Hazardous Area

WARNING

SIGN

0389

6 307–912

Connect the Air Line

(Refer to Fig. 1)

Installation

5. Install an air line lubricator (F) as close to the pump (H) as possible.

WARNING


To reduce the risk of an electric shock or other serious injury, the air supply hose must be electrically connected to a true earth ground. Use Only Graco Electrically Conductive Air Supply Hose.

6. Install an air shutoff valve (P) on each gun air supply line to shut off air to the gun(s).

Connect the Exhaust Tube

Press the exhaust tube (provided) onto the barbed adapter on the bottom of the gun handle. Secure the tube with the clamp provided. Refer to page 34.

1. Connect the Graco Electrically Conductive Air

Supply Hose (R) between the air supply line and the gun’s air inlet (V). The gun air inlet fitting has a left hand thread. Connect the air supply hose ground wire to a true earth ground.

Connect the Fluid Line

(Refer to Fig. 1)

1. Before connecting the fluid line (N), blow it out with air and flush it with solvent. Use solvent which is compatible with the fluid to be sprayed.

2. Install an air line filter (O) and an air and water separator (D) on the air line to ensure a dry, clean air supply to the gun. Dirt and moisture can ruin the appearance of your finished workpiece and can cause the gun to malfunction.

2. Install a fluid regulator (M) on the fluid line to control fluid pressure to the gun.

3. Install a fluid filter (K) and drain valve (U) at the pump outlet.

3. Install a bleed-type air regulator (G) on the pump and gun air supply lines to control air pressure to the pump and gun.

4. Install a bleed-type air shutoff valve on the main air line (C) and the pump air line (E) to shut off air to the pump. Install an additional bleed-type valve on each pump air supply line to relieve air trapped between this valve and the pump after the air regulator is shut off.

WARNING


The fluid drain valve (U) is required in your system to assist in relieving fluid pressure in the displacement pump, hose and gun; triggering the gun to relieve pressure may not be sufficient. Install a drain valve close to the pump’s fluid oulet. The drain valve reduces the risk of serious injury, including splashing in the eyes or on the skin.

WARNING


The bleed-type air shutoff valve is required in your system to relieve air trapped between this valve and the pump after the air regulator is closed.

Trapped air can cause the pump to cycle unexpectedly, which could result in serious injury, including splashing in the eyes or on the skin.

4. Connect the fluid line to the 3/8–18.6(m) gun fluid inlet (W).

5. Before running any paint through the spray gun, flush it out with a compatible solvent.

307–912 7

Ground the System

Installation

4.

All air and fluid lines must be properly grounded.

Use only grounded hoses with a maximum of 500 feet (150 m) combined hose length to ensure grounding continuity.

WARNING



When operating the electrostatic device, any ungrounded objects in the spray area (such as people, containers, tools, etc.) can become electrically charged.

Improper grounding can result in static sparking, which can cause a fire, explosion, or electric shock. Follow the grounding instructions below.

5.

All electric cables must be properly grounded.

6.

All persons entering the spray area: their shoes must have conductive soles, such as leather, or personal grounding straps must be worn. Rubber or plastic soles are not conductive. The operator must not wear gloves that insulate the hand from the spray gun. The gloves must be conductive or modified as shown in Fig. 3, page 11.

The following are minimum grounding requirements for a basic electrostatic system. Your system may include other equipment or objects which must be grounded.

Check your local electrical code for detailed grounding instructions. Your system must be connected to a true earth ground.

7.

Object being sprayed: keep the workpiece hangers clean and grounded at all times. Contact points must be sharp points or like knife edges.

8.

The floor of the spray area: must be electrically conductive and grounded. Do not cover the floor with cardboard or any non-conductive material which would interrupt grounding continuity.

1.

Pump: ground the pump by connecting a ground wire and clamp as described in your separate pump instruction manual.

9.

Flammable liquids in the spray area: must be kept in approved, grounded containers. Do not store more than the quantity needed for one shift.

2.

Air compressors and hydraulic power supplies: ground the equipment according to the manufacturer’s recommendations.

10.

All electrically conductive objects or devices in the spray area: including fluid containers and wash cans, must be properly grounded.

3.

Electrostatic Air Spray Gun: ground the gun by connecting the Graco Electrically Conductive Air

Hose and connecting the air hose ground wire to a true earth ground. Check the electrical grounding of the gun as instructed on page 9.

8 307–912

Installation

Check the Electrical Grounding (See Fig. 2)

WARNING



Megohmmeter P/N 218–979 (AA-see

Fig. 2) is not approved for use in a hazardous area. To reduce the risk of sparking, do not use the megohmmeter to check electrical grounding unless:

The gun has been removed from the hazardous area;

Or all spraying devices in the hazardous area are turned off, ventilation fans in the hazardous area are operating, and there are no flammable vapors in the area (such as open solvent containers or fumes from spraying).

Failure to follow this warning could cause fire, explosion, electric shock and result in serious injury and property damage.

a.

If using a black or grey air hose, use a megohmmeter (AA) to measure the resistance.

Use an applied voltage of 500 minimum to

1000 volts maximum. The resistance should not exceed 2 megohms.

b.

If using a red turbine air hose, use an ohmmeter to measure the resistance. Resistance should not exceed 100 ohms.

6. If the resistance is greater than the maximum reading specified above for your hose, check the tightness of the ground connections and be sure the air hose ground wire is connected to a true earth ground. If the resistance is still too high, replace the air hose.

BB

R

1. Have a qualified electrician check the electrical grounding continuity of the spray gun and air hose.

2. Turn the ES ON-OFF Lever to OFF. See Fig. 4, page 12, for the location of the lever.

3. Turn off the air and fluid supply to the gun. The fluid hose must not have any fluid in it.

4. Make sure the air hose (R) is connected and the hose ground wire is connected to a true earth ground.

5. Measure the resistance between the gun handle

(BB) and a true earth ground (CC).

AA

CC

06444

Fig. 2

307–912 9

10 307–912

Notes

Pressure Relief Procedure

Operation

Operating Checklist

Check the following list daily, before starting to operate the system, to help ensure safe, efficient operation.

WARNING


The system pressure must be manually relieved to prevent the system from starting or spraying accidentally. To reduce the risk of an injury from electric shock, accidental spray from the gun, splashing fluid, or moving parts, follow the Pressure Relief

Procedure whenever you:

D are instructed to relieve the pressure,

D stop spraying,

D check or service any of the system equipment,

D or install or clean the fluid nozzle.

____ 1. All the operators are properly trained to safely operate an electrostatic air spray system as instructed in this manual.

____ 2. All the operators are trained how to properly relieve pressure as instructed at left.

____ 3. The system is thoroughly grounded and the operator and all persons entering the spray area are properly grounded. See Ground

the System, page 8.

1. Turn the ES ON–OFF Lever to OFF.

2. Turn off the air and fluid supply to the gun.

____ 4. The operator and all persons entering the spray area are properly grounded by wearing shoes with conductive soles or personal grounding straps.

3. Trigger the gun into a grounded metal waste container to relieve fluid pressure.

4. Open the pump drain valve, having a waste container ready to catch the drainage.

____ 5. The operator is not wearing gloves which insulate the hand from the spray gun. If worn, gloves must be conductive or modified as shown in Fig. 3 so as not to interfere with the operator grounding through the gun.

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

____ 6. The condition of the electrical components of the spray gun has been checked as instructed in Electrical Tests, page 19.

Filter the Fluid

Filter the fluid to remove coarse particles and sediment which could clog the spray nozzle.

____ 7. The ventilation fans are operating properly.

____ 8. The workpiece hangers are clean and grounded. Contact points must be sharp points or like knife edges.

____ 9. All the debris, including flammable liquids and rags, is removed from the spray area.

____ 10. All flammable liquids in the spray booth are in approved, grounded containers.

____ 11. All conductive objects in the spray area are electrically grounded and the floor of the spray area is electrically conductive and grounded.

3 in. (76 mm) square cut out and finger of glove cut off

NOTE: If gloves are worn, they must be conductive or modified as shown so they do not interfere with operator grounding through the gun.

Fig. 3

06445

307–912 11

Operation

DD

31

26 45 43

05151A

20

1

06443

Fig. 4

Selecting a Fluid Nozzle and Air Cap

WARNING


To reduce the risk of an injury, follow the Pressure

Relief Procedure on page 11 before removing or installing a fluid nozzle and/or air cap.

The gun is supplied with a 0.059 in. (1.5 mm) fluid nozzle, P/N 191–833, and air cap, P/N 177–033. If your application requires a different nozzle and air cap combination, use instruction manual 307–803 or consult your authorized Graco distributor to select the appropriate fluid nozzle and air cap. Install the air cap and fluid nozzle into the gun barrel as instructed in Air

Cap/Nozzle/Resistor Stud Replacement, page 22.

Operating the Spray Gun

WARNING



Relief Procedure on page 11 whenever you stop spraying and whenever you are instructed to relieve pressure.

WARNING

COMPONENT RUPTURE HAZARD

To reduce the risk of component rupture, which can cause serious injury, do not exceed the maximum working pressure of the lowest rated system component. This equipment has a 100 psi (7 bar, 0.7 MPa) maximum working air and fluid pressure.

Follow the steps on page 13 to establish the correct fluid flow and air flow. Do not turn the ES ON-OFF lever to ON yet.

12 307–912

Operation

Operating the Spray Gun (continued)

1. Follow the Operating Checklist on page 11.

7. Set the atomizing air valve (31) about 1.5 turns out for most applications. The Atomizing Air Valve

Adjustment chart shows the effect of the atomizing air valve adjustment on the air cap air flow.

2. To adjust the air cap for a vertical or horizontal spray pattern, first make sure the pressure is relieved. Then loosen the air cap retaining nut, and rotate the air cap as directed in Fig. 5. Tighten the retaining nut until the air cap is held firmly in place; you should not be able to rotate the air cap horns by hand.

8. Adjust the pattern width with the fan air valve (43).

Atomizing Air Valve Adjustment

Vertical Pattern

100

90

80

70

60

50

40

30

20

10

0

0.0

0.5

1.0

1.5

2.0

2.5

3.0

Fully Open

Valve Turns

Fully Closed

Horizontal Pattern

Fig. 5

Fine Adjustments of the Spray Gun

To improve the atomization, open the atomizing air valve further (31). If more atomizing air is needed beyond the fully open position of the valve, increase the air hose inlet pressure.

3. Adjust the fluid flow by using the fluid line pressure regulator. Refer to instruction manual 307–803 to set the fluid pressure for various fluid flows, according to the size of the fluid nozzle being used.

4. If necessary, further adjust the fluid flow rate with the fluid adjustment knob (45). See Fig. 4.

5. Fully open the fan air valve (43).

6. Set the air pressure with the air pressure regulator.

The following chart shows the air hose inlet pressure required to get full voltage from the power supply. To avoid shortening the turbine life, do not exceed the recommended air pressures.

Use the lowest air flow settings needed for acceptable atomization. The slower particle velocity will improve the electrostatic effect.

To reduce the atomization air and minimize any overspray, turn the atomizing air valve in.

NOTE: See the Spray Pattern Troubleshooting chart on page 16 to correct spray pattern problems.

9. Turn the ES ON-OFF lever to ON to begin spraying with the electrostatics. When spraying, the ES indicator light (DD) should glow, indicating the electrostatic charge.

Air Hose

Length ft. (m)

15 (4.6)

25 (7.6)

50 (15.3)

75 (22.9)

100 (30.5)

Dynamic pressure at air hose inlet required for full voltage psi (bar, MPa)

45 to 50 (3.1 to 3.5, 0.31 to 0.35)

50 to 55 (3.5 to 3.8, 0.35 to 0.38)

60 to 65 (4.2 to 4.5, 0.42 to 0.45)

68 to 73 (4.7 to 5.0, 0.47 to 0.50)

75 to 80 (5.2 to 5.5, 0.52 to 0.55)

CAUTION

Hang the gun with its nozzle pointing down when it is not being used to avoid having fluid run into the gun air passages. Fluid in the gun air passages can cause poor atomization and excessive current demands and damage the gun.

307–912 13

Operation

Shutdown

Daily Care and Cleaning

1. Relieve the pressure.

WARNING



Relief Procedure on page 11 whenever you stop spraying and whenever you are instructed to relieve pressure.

2. Flush and clean the equipment. Follow the instruction in Maintenance.

Maintenance

1. Clean the fluid and air line filters daily.

2. Clean the outside of the gun daily with a soft cloth dampened in a compatible solvent.

WARNING



Relief Procedure on page 11 when you stop spraying, before cleaning or flushing the spray gun, and whenever you are instructed to relieve the pressure.

3. Clean the air cap and fluid nozzle daily, minimum.

See page 15. Some applications require more frequent cleaning. Replace the fluid nozzle and air cap if they are damaged. See page 22.

4. Check the electrode wire. Straighten it if it is bent, and replace it if it is broken or damaged. See page

23.

WARNING

FIRE, EXPLOSION, AND ELECTRIC

SHOCK HAZARD

To reduce the risk of fire, explosion, or electric shock, turn the ES ON-OFF lever OFF before flushing the gun.

5. Check for fluid leakage from the gun and fluid hoses. Tighten fittings or replace equipment as needed.

6. Check all of the work hangers for build-up of material; clean them if necessary.

7. Flush the gun before changing colors and whenever you are done operating the gun. See page 15.

CAUTION

Fluid left in gun air passages could result in a poor quality paint finish and may draw current and reduce the electrostatic effect. Fluid in the power supply cavity can reduce the alternator life.

Immersing the gun in fluid is not recommended.

Do not use any cleaning method which may allow solvent into the gun air passages.

Point the gun down while cleaning to prevent fluid from running into the air passages. See

Fig. 6.

Hang the gun with its nozzle pointing down when it is not being used.

Clean all parts with a non-conductive, compatible solvent. Conductive solvents can cause the gun to malfunction.

Methylene chloride is not recommended as a flushing or cleaning solvent with this gun as it will damage nylon components.

14 307–912

Maintenance

Clean the Air Cap and Fluid Nozzle

CAUTION

Do not use metal tools to clean the air cap or spray tip holes as this could scratch them, and make sure the electrode wire is not damaged. Scratches in the air cap or spray tip or a damaged electrode wire can distort the spray pattern.

WARNING



Relief Procedure on page 11 whenever you stop spraying and whenever you are instructed to relieve the pressure.


Equipment needed:

Soft bristle brush

Compatible solvent

2. Disconnect and plug the fluid line.

3. Connect the solvent supply to the gun.

4. Flush the gun with compatible solvent into a grounded container until it is clean.

Procedure:

WARNING



Relief Procedure on page 11 whenever you stop spraying, before installing or cleaning the fluid nozzle, and whenever you are instructed to relieve the pressure.


6. Disconnect and plug the solvent line.

7. Trigger the gun into a grounded container to drain out the solvent remaining in the gun.

8. Place the gun in its hanging bracket, with the nozzle pointing down, until it is used again.


2. Remove the air cap assembly.

9. When ready to spray again, reconnect the fluid supply line.

3. With the front of the gun pointed down, clean the air cap, fluid nozzle, and front of the gun, using a soft bristle brush and compatible solvent. See Fig.

6.

10. Turn on the fluid and air supplies.

11. Make sure the ES ON-OFF lever is OFF.

12. Trigger the gun until it is clear of solvent.

4. Carefully re-install the air cap assembly. Avoid bending the electrode. Tighten the retaining nut until it is snug, allowing the air cap to turn with resistance.

5. Test the gun resistance as instructed on page 19.

Flush the Spray Gun

WARNING


To reduce the risk of fire, explosion, or electric shock, turn the ES ON-OFF lever OFF before flushing the gun.

06446

Fig. 6

307–912 15

Troubleshooting

WARNING


Installing and servicing this equipment requires access to parts which may cause an electric shock or other serious injury if the work is not performed properly. Do not install or service this equipment unless you are trained and qualified.

WARNING



Relief Procedure on page 11 before checking or servicing any part of the system and whenever you are instructed to relieve the pressure.

NOTE: Check all possible remedies in the Troubleshooting Chart before disassembling the gun.

Spray Pattern Troubleshooting

NOTE: Some spray pattern problems are caused by the improper balance between air and fluid.

Problem

Fluttering or spitting spray

Improper spray pattern

Streaks

Cause

The fluid supply is insufficient.

The fluid nozzle is loose, or the fluid nozzle taper seat is damaged.

There is dirt between the fluid nozzle, taper seat, and gun body.

The coupler at the fluid inlet is loose or cracked.

Loose fluid tube in tank.

There is fluid build-up on the air cap; partially clogged horn holes; or full air pressure from the clean horn hole forces the fan pattern toward the clogged end.

The electrode is bent.

The fluid nozzle or air cap holes are damaged.

There is fluid buildup on the perimeter of the fluid nozzle orifice, or a partially clogged fluid nozzle orifice.

The electrode is bent.

The fan air pressure is too high.

The fluid is too thin.

There is not enough fluid pressure.

The fan air pressure is too low.

The fluid is too thick.

There is too much fluid.

The last coat of fluid is applied too wet.

There is too much air pressure.

The air pressure is insufficient.

The spray pattern is non-uniform.

Solution

Adjust the fluid regulator, or fill the fluid supply.

Tighten or replace the fluid nozzle; see page 22.

Clean the parts; see page 15.

Tighten or repair the coupler.

Tighten.

Clean the air cap with a soft implement or submerge it in water and wipe it clean; see page 15.

Straighten the electrode.

Replace the damaged part; see page 22.

Remove the obstruction; never use wire or hard instruments; see page 15.

Straighten the electrode wire.

Reduce the fan air pressure.

Reduce the fluid viscosity.

Increase the fluid pressure.

Increase the fan air pressure.

Reduce the fluid viscosity.

Reduce the fluid flow. Reduce fluid pressure on pressure feed guns and/or adjust the fluid adjusting screw until proper pattern is obtained.

Apply a drier finish using multiple strokes.

Decrease the air pressure.

Increase the air pressure.

Clean or replace the air cap; see page 15 or 22.

16 307–912

Troubleshooting

Gun Operation Troubleshooting

Problem

Fluid leakage from the fluid packing area

Cause

The needle packings or shaft are worn.

Air leakage from the front of the gun

“Orange Peel” finish

Excessive spray fog

No fluid sprays from the gun

The equipment is covered with fluid

The air cap is dirty

The packing nut is loose

The air valve is not seating properly.

The air valve o-ring is sticking.

The fluid seat is worn.

The fluid packing is too tight.

The resistor stud is loose.

The fluid nozzle is loose.

The resistor stud o-ring is damaged.

The air pressure is insufficient for good atomization.

The fluid is poorly mixed or filtered.

An improper thinner is being used.

The air pressure is too high.

The fluid is thinned too much.

The fluid supply is low.

The air cap is damaged.

The fluid nozzle is dirty or clogged.

The fluid nozzle is damaged.

The fluid adjustment valve is damaged.

The exhaust air flow is insufficient or not directed properly.

The distance between the gun and workpiece is incorrect.

The air cap and fluid nozzle are misaligned.

Air Cap

Solution

Replace the packings or shaft; see page

26.

Tighten the packing nut; see page 26.

Clean and service the air valve; see page

31.

Lubricate the o-ring; see page 31.

Replace the needle; see page 26.

Replace the fluid nozzle and/or electrode needle; see pages 26 to 23.

Lubricate and adjust the packing nut; see page 26.

Tighten the resistor stud; see page 22.

Tighten the fluid nozzle; see page 22.

Replace the o-ring; see page 22.

Increase the air cap air pressure by opening the atomizing air valve more or increasing the gun air inlet pressure; use the least air pressure needed for good results.

Remix or refilter the fluid.

Use the proper thinner.

Reduce the air cap air pressure by closing the atomizing air valve more or decreasing the gun air inlet pressure; use the least air pressure needed for good results.

Do not reduce below minimum pressure needed for full voltage. See page 13.

Properly thin the fluid.

Check the fluid supply; add fluid if necessary.

Replace the air cap; see page 22.

Clean the fluid nozzle; see page 15.

Replace the fluid nozzle; see page 22.

Replace the o-ring; see page 31.

Check for the proper CFM; check the baffles and direction of the air flow.

Adjust the spraying distance to 8 to 12 inches (203 to 305 mm).

Check the air cap and fluid nozzle seat for fluid buildup.

Clean or replace parts as needed; see page 15 or 22.

ALIGNED

Fluid Nozzle

MISALIGNED

307–912 17

Troubleshooting

Electrical Troubleshooting

Problem

Poor wrap-around

Operator gets a mild shock

Cause

Operator gets a shock when touching the workpiece

* ES indicator light is not on when the gun is triggered.

Solution

The ES ON-OFF lever is in the OFF (O) position.*

The distance between the gun and workpiece is incorrect.

The parts are poorly grounded.

The booth exhaust velocity is too high.

The atomizing air pressure is too high.

Turn the lever to ON (1).

Adjust the spraying distance to 8 to 12 inches

(203 to 305 mm)

Clean the workpiece hangers. Check for proper grounding on the conveyer or track.

Reduce exhaust velocity within code limits.

Reduce the atomizing air pressure.

The fluid pressure is too high.

The fluid viscosity is not right for electrostatic spray.

The fluid resistivity is too low.

The turbine alternator is not operating.*

The gun resistance is faulty.

Fluid leaks from the needle packing and causes a short.

The turbine alternator is faulty.

The operator is not properly grounded or is near an ungrounded object.

The gun is not properly grounded.

Reduce the fluid pressure.

Check with the supplier for proper fluid viscosity for electrostatic spray.

Check the fluid resistivity with a paint meter and probe.

Check if the ES ON-OFF lever is ON (1).

Check the air supply to the gun. Check for dirt or moisture in the turbine. See page 28.

Check the gun resistance. See page 19.

Clean the needle cavity. Replace the fluid needle. See page 26.

Be sure the plug is in place on the back of the turbine alternator housing. Remove and test the turbine alternator. See page 28.

Be sure the floor and the operator are properly grounded. See Ground the System, page 8.

See Check the Electrical Grounding, page 9.

The workpiece is not properly grounded.

Clean workpiece hangers. Check for proper grounding on the conveyor or track.

18 307–912

Electrical Tests

The performance and safety of the spray gun are directly affected by the condition of the electrical components contained inside the gun. The electrical tests below can be used to determine the condition of the power supply (18) and the resistor stud (22) as well as the continuity of the electrical path between the components.

Measure the resistance between the end of the electrode (20) and the gun air fitting (17). See Fig. 7. The resistance should be between 180 to 220 megohms. If the resistance is outside the specified range, go to the next test. If the resistance is correct, resume spraying or refer to the Electrical Troubleshooting chart on page 18 for other possible causes of poor performance.

Use megohmmeter P/N 218–979 (A) and an applied voltage of 500 volts to complete these electrical tests.

Connect the leads as shown.

A

WARNING



Megohmmeter P/N 218–979 (A-see Fig.

7) is not approved for use in a hazardous area. To reduce the risk of sparking, do not use the megohmmeter to check electrical grounding unless:

The gun has been removed from the hazardous area;

Or all spraying devices in the hazardous area are turned off, ventilation fans in the hazardous area are operating, and there are no flammable vapors in the area (such as open solvent containers or fumes from spraying).

Failure to follow this warning could cause fire, explosion, electric shock and result in serious injury and property damage.

Test Gun Resistance

Check the resistance with the gun triggered and with the trigger released. The fluid passage must be flushed and dried to get an accurate reading.

Fig. 7

20

17

06447

Continued on the next page.

307–912 19


Test Power Supply Resistance

Remove the power cartridge (18) from the gun handle.

See Power Cartridge Replacement on page 27.

Remove the turbine alternator from the power cartridge. See Turbine Alternator Removal on page 28.

Measure the resistance from the power supply’s ground contact point (EE) to the contact spring (18c) on the other end of the power supply. See Fig. 8.

The resistance should be 157.5 to 192.5 megohms. If the resistance is outside the specified range, the power supply is defective and must be replaced. If the resistance of the power supply is correct, proceed to the next test.

If you still have problems, refer to the Electrical

Troubleshooting chart on page 18 for other possible causes of poor performance, or contact the nearest authorized service agency.

Test Resistor Stud Resistance

Insert a conductive rod (B) into the gun barrel (removed for the power supply test) and against the metal contact (C) in the front of the barrel. See Fig. 9.

Measure the resistance between the conductive rod

(B) and the gun electrode (20). The resistance should be 21 to 29 megohms. If the resistance is correct, resume spraying or refer to the Electrical

Troubleshooting chart on page 18 for other possible causes of poor performance. Contact the nearest authorized service agency if problems continue.

Fig. 8

18c

20

Fig. 9

18

A

A

EE

03566

C B

06448


20 307–912


Test Resistor Stud Resistance (continued)

If the resistance is outside the specified range, remove the resistor stud (22). See Air Cap/Nozzle/Resistor

Stud Replacement on page 22. Check the resistance between the black resistor stud contact ring (D) and the needle contact ring (E). Refer to Fig. 10. You may have to press down on the contact ring (D) in several places to get a good reading.

The resistance should be 21 to 29 megohms. If the resistance is correct, make sure the metal contact (C) in the barrel and the needle contact wire (E) are clean.

If the resistance is outside the specified range, the resistor is defective and the resistor stud (22) must be replaced. See Air Cap/Nozzle/Resistor Stud Re-

placement on page 22.

Fig. 10

E

WARNING



The resistor stud contact ring (D) is a conductive contact ring, not a sealing o-ring. See Fig. 10. To reduce the risk of sparking or electric shock, do not remove the resistor stud contact ring (D) or operate the gun without the contact ring in place. Do not replace the resistor stud (22) with anything but a genuine

Graco part.

D

0442

307–912 21

Prepare the Gun for Service

WARNING


Installing and servicing this equipment requires access to parts which may cause an electric shock or other serious injury if the work is not performed properly. Do not install or service this equipment unless you are trained and qualified.

Service

Air Cap/Nozzle/Resistor Stud

Replacement

CAUTION

Hold the front end of the gun up, and trigger the gun while removing the nozzle and resistor stud to help drain the gun and prevent any fluid left in the gun from entering the air passages.

1. Prepare the gun for service as instructed at left.

WARNING


To reduce the risk of injury, follow the Pressure

Relief Procedure on page 11 before checking or servicing any part of the system and whenever you are instructed to relieve the pressure.

2. Remove the air cap assembly. Point the front end of the gun up and squeeze the trigger while removing the fluid nozzle/resistor stud (21, 22) assembly with the multi-tool (62). See Fig. 11, page 23.

NOTE: If the resistor stud remains in the gun when the fluid nozzle is removed, start the nozzle thread onto the stud and pull the stud out.

3. Unscrew and remove the resistor stud (22) with the multi-tool (62). See Fig. 12.

NOTE:

D Check all possible remedies in Troubleshooting before disassembling the gun.

D If the plastic parts of the gun must be held securely, always clamp them in padded vice jaws to prevent damage to the parts.

D Lightly lubricate o-rings and seals with petroleum jelly. Do not over-lubricate.

D Only use genuine Graco parts. Do not mix or use parts from other PRO Gun models. See page 35.

1. Flush the gun as instructed in Flush the Spray

Gun, page 15.


WARNING



The resistor stud contact ring (D) is a conductive contact ring, not a sealing o-ring. See Fig. 11. To reduce the risk of sparking or electric shock, do not remove the resistor stud contact ring (D) except to replace it and never operate the gun without the contact ring in place.

Do not replace the contact ring with anything but a genuine Graco part.

3. Disconnect the air and fluid lines from the gun.

4. Remove the spray gun from the worksite for service or repair. Service or repair area must be clean.

To install the resistor stud:

4. Lightly lubricate the o-ring (25) with petroleum jelly and install it on the resistor stud (22).

5. Using the multi-tool (62), install the resistor stud

(22) in the fluid nozzle (21). Tighten to 10 in-lb

(1.12 N S m).

NOTE: Make sure the electrode (20) is tightened properly, as shown in Fig. 13.


22 307–912

Service

Air Cap/Nozzle/Resistor Stud

Replacement (continued)

6. Trigger the gun while installing the fluid nozzle (21) and resistor stud (22) assembly with the multi-tool

(62). Tighten until the fluid nozzle seats in the gun barrel.

3. Unscrew and remove the fluid needle/electrode

(20) with the multi-tool (62). See Fig. 13. Hold the needle shaft end to prevent it from turning.

CAUTION

Be careful not to damage the contact wire when removing the electrode from the gun.

7. Install the air cap assembly (1, 2, 8). Test the gun resistance as instructed on page 19.

1, 8

2

4. Apply low-strength (purple) Loctite r or equivalent thread sealant to the electrode and needle shaft threads. Install the new electrode finger-tight. Do not over-tighten it.

62

21

CAUTION

To avoid damaging the plastic threads or contact wire, be very careful when installing the electrode.

20

22

D

5. Install the fluid nozzle, resistor stud, and air cap assembly as instructed at left.


25

Apply a very light coat of lubricant

Tighten 1/8 to 1/4 turn past hand tight

Fig. 11

06449

20 62

21

22

62

Torque to 10 in-lbs (1.12 N S m)

Fig. 12

0444A

Electrode Replacement

1. Prepare the gun for service as instructed on page

22.

2. Remove the air cap, nozzle and resistor stud as instructed on page 22.

Apply low-strength (purple) Loctite or equivalent to needle shaft threads

Fig. 13 06450

307–912 23

Service

Barrel Removal


22.

2. Carefully loosen the nut from the fluid fitting (10).

Pull the tube (12) out of the fitting. Make sure both ferrules and the nut stay with the tube. See Fig.

14.

3. Using the wrench (63) supplied, loosen the three socket head cap screws (5).

4. Hold the gun handle (7) with one hand and pull the barrel (3) straight away from the handle to remove it. See Fig. 15.

18

CAUTION

To avoid damaging the power cartridge (18), pull the gun barrel straight away from the gun handle. If necessary, gently move the barrel from side to side to free it from the gun handle.

Fig. 15

12

10

Fig. 14

5

63

06451

24 307–912

3

7

06452

Service

Fluid Packing Removal


22.

2. Remove the air cap assembly, fluid nozzle and resistor stud and electrode as instructed on page

23.

3. Loosen the trigger screws (4) far enough to remove the trigger (13).

4. Remove the packing cartridge and needle assembly (28), using the multi-tool (62). See Fig. 16.

CAUTION

Clean all parts in non-conductive solvent compatible with the fluid being used, such as xylol or mineral spirits. Use of conductive solvents can cause the gun to malfunction.

5. Check all the parts for wear or damage and replace if necessary.

Fig. 16

13

4

28

62

06454

307–912 25

Service

Fluid Packing and Needle Repair

The fluid packings and needle can be replaced as individual parts or as assemblies.

The overall assembly is pre-adjusted at the factory.

3. Place the fluid packing (28e), needle packing

(28d), and housing (28b) on the fluid needle (28a) as shown in Fig. 17.

4. Lubricate the o-ring (28g) on the outside of the packing housing (28b).

NOTE: Before installing the packing and needle assembly into the gun barrel, make sure the internal surfaces of the barrel are clean. Remove any residue with a soft brush or cloth. Check the inside of the barrel for marks from high voltage arcing. If the marks are present, replace the barrel.

If the parts are purchased separately, assemble them as instructed below and as shown in Fig. 17.

5. Make sure the spring (30) is installed against the nut as shown in Fig. 17.

6. Install the packing and needle assembly into the gun barrel. Using the multi-tool (62), tighten the assembly until just snug, then check the drag on the needle.

1. Place the packing nut (28c) and o-ring (28f) on the fluid needle (28a). Flats on the packing nut must be facing toward the back of the fluid needle.

7. Tighten the packing nut to 2 lbs. (9 N) of drag force when sliding the needle through the packing cartridge.

8. Install the trigger (13) and tighten the trigger screws (4).

2. Fill the entire inner cavity of the spacer (28h) with petroleum jelly. Place the spacer on the fluid needle (28a) in the direction shown in Fig. 17.

Generously apply petroleum jelly to the outside of the spacer.

9. Install the electrode, nozzle and resistor stud assembly and the air cap assembly as instructed on page 23.


28g 28h

28c

28a

30

28d

28b

28e

Item 30 is not included with the Packing/Needle Assy. (28)

Fig. 17

28f

28

03559

26 307–912

18

Service

18d

18a

18c

18b

35

7

F

37a

Apply a very light coat of lubricant

Do not expose to solvents

Fig. 18

37b 37

Power Cartridge Replacement

NOTE: The power cartridge consists of the alternator

(37), power supply (18) and retaining ring (35). See

Fig. 18.


22.

2. Remove the barrel as instructed on page 24.

CAUTION

Be careful when handling the power cartridge to avoid damaging it.

3. Grasp the power cartridge with your hand. With a gentle side to side motion, pull it free from the gun handle (7). Then pull the power cartridge straight out of the handle.

05160

CAUTION

To avoid a loss in electrostatic performance, inspect the power cartridge cavity in the handle for dirt or moisture. Clean out the cavity with a clean, dry rag if necessary.

Lightly lubricate the o-rings (18b, 37a) on the new power cartridge with petroleum jelly. All the o-rings and the compression spring (18c) must be in place or the gun will malfunction.

4. Insert the new power cartridge in the gun handle.

Be sure the gasket (18a) is in place.

5. Install the barrel on the handle as instructed on page 28.


307–912 27

Service

Turbine Alternator Replacement

NOTE: Replace turbine bearings after 2,000 hours of operation. See your authorized Graco representative.

Barrel Installation

1. Be sure the gaskets (34 and 18a) and spring (30) are in place. See Fig. 19. Replace if damaged.


22.

2. Remove the power cartridge from the gun handle as instructed on page 27.

3. Squeeze the two ends of the retaining ring (35) together and carefully pull the alternator (37) away from the power supply until the 3-wire connector

(F) disengages. See Fig. 18, page 27.

2. Place the barrel (3) over the power cartridge (18) and onto the gun handle (7). Make sure the fluid needle spring (30) is seated properly.

3. Tighten the three socket head cap screws (5) oppositely and evenly to 18 in-lbs (2 N S m) maximum (about a half turn past snug) with the wrench

(63) supplied.

4. Tighten the three socket head cap screws (5) oppositely and evenly with the wrench (63) supplied. Tighten the cap screws to 18 in-lbs (2 N S m) maximum (about a half turn past snug).

4. Use an ohmmeter to test the turbine alternator coil.

Measure the resistance between the two outer terminals of the 3-wire connector (F). The resistance should be 3 to 5 ohms. If the reading varies from this value, replace the alternator.

5. Measure the resistance between each outer terminal of the 3-wire connector and the turbine alternator housing. The resistance should be infinite. If the resistance is not infinite, replace the alternator.

6. Connect the 3-wire connector to the 3 prongs in the power supply. Push the alternator onto the power supply until the retaining ring engages with the alternator.

7. Install the power cartridge in the gun handle as instructed on page 27.

CAUTION

To avoid damaging the gun, do not over-tighten the cap screws (5).

5. Assemble the fluid tube (12) back into the fluid fitting (10).


3

5

34

18

18a

30

7

12

10

Tighten to 18 in-lbs (2 N S m) maximum (about half turn past snug), using wrench provided.

06453

Fig. 19

28 307–912

Service

Fan Air Adjustment Valve Repair


22.

2. Place a wrench on the flats of the valve housing and remove it from the handle. See Fig. 20.

NOTE: The fan air valve (43) can be replaced as an assembly or as individual parts.

To disassemble the fan valve:

3. Remove the retaining ring (43b). Rotate the fan air adjustment knob (43c) counterclockwise until it is disengaged from the valve housing threads (43d).

Pull the adjustment knob out of the valve housing.

4. Clean all the parts and inspect them for wear or damage.

5. When reassembling the fan air valve (43), lubricate the o-rings (43e) and the adjustment knob threads

(43c) with petroleum jelly.

6. After the retaining ring (43b) is installed on the adjustment knob (43c), back the adjustment knob out of the valve housing (43d) until it bottoms out against the retaining ring.

7. Apply

PTFE

paste to the threads of the valve housing (43d) and install it in the handle. Torque the housing to 10 to 12 in-lb (1.1 to 1.4 N S m).

Fig. 20

43b

43d

DETAIL

43e

43

43c

Lubricate o-rings (43e) and top knob threads (43c) with petroleum jelly

Apply PTFE paste to the valve housing threads (43d); Torque to 10–12 in-lb (1.1–1.4 N S m)

06455

307–912 29

Service

Fluid Adjustment Assembly Repair


22.

2. Using a 14 mm socket wrench, remove the fluid adjustment assembly (45). See Fig. 21.

3. Turn the stem (45a) fully clockwise and remove the sleeve stop (45e).

4. To completely disassemble the fluid adjustment assembly, the sleeve stop (45e) must be assembled back on to the stem (45a). Turn the stem until the sleeve is protruding about 0.4 inches

(10 mm).

5. To remove the sleeve (45d), hold the cap (45c) and turn the sleeve stop (45e) counterclockwise with a wrench.

6. Remove the stem (45a) and o-ring (45b).

7. Repair or replace any damaged parts. Lubricate the o-ring (45b) with petroleum jelly.

8. Carefully apply low strength (purple) Loctite or equivalent thread sealant to the sleeve (45d) external threads. Turn the sleeve in with the sleeve stop (45e) until it bottoms out, then back it out 1/8 turn.

CAUTION

Do not allow Loctite to get onto the stem (45a) during assembly or the stem will not turn after assembly.

DETAIL

7

0636A

41

39

44

45

45d

45b

45a

45c

23

45e

40, 42

Lubricate o-rings with petroleum jelly

Carefully apply low strength (purple) Loctite or equivalent to sleeve (45d) external thread. Turn sleeve in with sleeve stop

(45e) until it bottoms out, then back out 1/8 turn. Allow Loctite to cure overnight.

Do not remove u-cup (42) unless damaged. Install with lips facing into handle. Tighten packing nut (40) until it bottoms.

06456

Fig. 21

9. Place the fluid adjustment assembly on the workbench with its threaded end facing down and allow the Loctite to cure over night.

10. After the Loctite has cured, assemble the fluid adjustment assembly into the gun.

30 307–912

Service

Air Trigger Valve Repair


22.

Atomizing Air Valve Removal and

Replacement


22.

2. Using a 14 mm socket wrench, remove the fluid adjustment assembly (45), o-ring (23) and spring

(44). See Fig. 21.

2. Remove the fan air valve (43). See Fig. 22.

CAUTION

Clean all parts in non-conductive solvent compatible with the fluid being used, such as xylol or mineral spirits. Use of conductive solvents can cause the gun to malfunction.

CAUTION

To avoid damaging the atomizing air valve (31), the fan air valve (43) must be removed before removing the atomizing air valve.

3. Loosen the air valve packing nut (40) one full turn.

Remove the air valve shaft (39) with a pliers.

3. Remove the atomizing air valve (31) from the gun handle. Inspect the o-ring (19) and replace if necessary.

4. Install a new atomizing air valve (31).

CAUTION

When removing the air valve shaft (39) be careful not to damage the seat area.

4. Check the o-rings (41, 23) for damage and replace if necessary. Apply petroleum jelly to the o-rings.

5. Apply

PTFE

paste to the fan air valve (43) housing threads and install the valve in the handle. Torque the housing to 10 to 12 in-lb (1.1 to 1.4 N S m).

31

19

CAUTION

Do not over-lubricate parts. Excessive lubricant on the o-ring (41) and air valve shaft (39) can be pushed into the gun air passage and blemish the finish on the workpiece.

5. Unscrew the packing nut (40) to check the u-cup

(42). Do not remove the u-cup unless it is damaged.

6. Install the air valve shaft (39), with the o-ring (41), and spring (44), into the back of the gun handle

(7). If the u-cup (42) was removed, install the air valve shaft (39) before installing the u-cup. Install the u-cup with its lips facing into the gun handle.

7. Install the fluid adjustment assembly (45), with the o-ring (23). Tighten the adjustment knob (45c) with the 14 mm socket wrench. Tighten the air valve packing nut (40) until it bottoms.

43

Apply PTFE paste to the fan air valve housing threads; Torque to 10–12 in-lb (1.1–1.4 N S m)

06455

Fig. 22

307–912 31

Service

ES ON-OFF Valve Repair


22.

7. Install the valve (38), with the regulator disc (46) and o-ring (36), into the gun handle. Install the spacer (32) on the valve.

2. Loosen the set screw (24) with the 2 mm hex key

(69) provided. Remove the lever (26) from the valve. See Fig. 23.

8. Install the retaining ring (47) into the groove in the handle. Install the lever (26) and tighten the set screw (24).

WARNING

MOVING PARTS HAZARD

To reduce the risk of eye injury, be sure to wear safety glasses when removing or installing the retaining ring (47) as the retaining ring could slip off the tool when compressed.

3. Use internal snap ring pliers to remove the retaining ring (47) from the handle. Align the holes in the retaining ring with the flat on the spacer (32) to ease assembly and disassembly.

WARNING

MOVING PARTS HAZARD

Make sure that the retaining ring (47) is engaged in the groove in the gun handle when installing the ES ON-OFF Valve. If the retaining ring is missing or improperly installed, the valve assembly can be propelled out of the gun when air pressure is applied and cause serious injury.

36

47

26

4. Remove the valve body (38) from the handle; be careful not to drop the regulator disk (46) and spacer (32).

24

5. Clean and inspect the parts for damage. Replace if necessary. Lubricate the o-ring (36) with petroleum jelly.

32

46

38

CAUTION

Do not over-lubricate parts. Excessive lubricant on the o-ring (36) can be pushed into the gun air passage and blemish the finish on the workpiece.

6. Install the regulator disk (46) in the valve (38) with its bevelled side facing in toward the valve.

Bevelled side of disk (46) faces toward valve (38)

Lubricate o-rings with petroleum jelly

Fig. 23

06457

CAUTION

Be sure the regulator disk (46) is installed correctly.

A missing or incorrectly installed regulator disc can cause severe damage to the power supply.

32 307–912

Notes

307–912 33

Parts

28g*

28b

DETAIL A

28d*

28h*

28f*

28c

28e*

22

21

2

3

8

5

1

34

25*

See Detail A

20

28

28a

Item 18 includes items 18a to 18f

Item 28 includes items 28a to 28h

Item 37 includes items 37a and 37b

Item 43 includes items 43b to 43e

Item 45 includes items 45a to 45e

13

4

18a

18d

18e

35

37b

37

37a

18c

31

18b

19

43b

43d

43e

41

43c

18f

44

45e

45d

45b

45a

23

45c

39

*29

10

12

6

30

40

REF. 12

42

14

7

9*

15

19

33

16

46

38

36

32

47

26

24

MODEL 222–600

17

66

67

06458

34 307–912

WARNING

Some PRO 3500sc Gun replacement parts look similar to other PRO Gun parts but are not interchangeable! When servicing, do not mix or use other PRO Gun parts!

Use of parts other than those specified in the parts list below could alter the grounding continuity of the gun, cause parts to leak or rupture, or cause the gun to malfunction and result in serious injury, fire, explosion or property damage.

Part No. 222–300

, Series B

Electrostatic Air Spray Gun, with two-finger trigger

Part No. 222–600 Electrostatic Air Spray Gun

Electrostatic Air Spray Gun, with four-finger trigger

Ref

No.

Part No.

Description

1

2

5

6

3

4

7

8

177–033 AIR CAP; See Manual 307–803 for available air caps

176–930 RING, retaining

222–314 BARREL, gun

185–095 SCREW, trigger

185–096 SCREW, cap, relieved; M5 x 0.8

185–097 HOOK

222–666 HANDLE, gun

187–423 NUT, air cap

9*

10

11 Y} 179–791 TAG, warning

12

13

110–077 FERRULES, fluid tube

110–078 FITTING, fluid tube

185–100 TUBE, fluid

191–904 TRIGGER, 2 finger;

Model 222–300 only

191–905 } TRIGGER, 4 finger


14

15

16

110–079

185–122

185–104

NUT, fluid tube

MUFFLER (flame arrestor)

BRACKET, 2 finger;


236–120 BRACKET, 4 finger;


22

23

24

25*

26

28

18d

18e

18f

19 {

20

21

17

18

185–105 FITTING, air

222–333 POWER CARTRIDGE, 65 kV

Includes items 18a–18f

18a { 185–134 S GASKET, power supply

18b { 106–555 S O-RING, Viton r

18c 110–098 S SPRING, compression

185–141 S CUSHION, power supply

185–099

185–145

106–555

190–933

191–833

S

S

PAD

PAD

O-RING; Viton

NEEDLE, electrode

NOZZLE, fluid, See Manual 307–803 for available nozzles

223–977 STUD, resistor

110–099 O-RING, PTFE r

110–083 SET SCREW, lever; M4 x 0.7

111–507 O-RING; fluoroelastomer

186–839 LEVER, ES valve

223–444 FLUID PACKING & NEEDLE ASSY.

Includes items 28a–28h

28a

28b

223–024 S NEEDLE, fluid

185–495 S HOUSING, packing

Qty

1

1

1

1

1

1

1

1

1

1

1

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

2

3

1

1

1

1

1

1

1

Parts

Ref

No.

Part No.

Description Qty

28c 185–488 S NUT, packing

28d* 178–763 S PACKING, needle

28e* 178–409 S PACKING, fluid

28f*

28g*

111–504

111–316

S

S

O-RING, fluoroelastomer

O-RING, fluoroelastomer

28h* 186–069 S SPACER

29* 185–120 SEAL, fluid

30

31

32

33

34 {

35

36

37

Includes items 37a & 37b

37a { 110–073 S O-RING, Viton

37b

38

39

40

41 {

42 {

43

185–111 SPRING, compression

238–927 VALVE, atomizing air

185–119 SPACER, lever

185–112 ADAPTER, exhaust hose;


188–878 ADAPTER, exhaust hose;


185–113 GASKET, manifold; polyethylene

185–114 RING, retainer, alternator

113–746 O-RING, CV75

222–319 ALTERNATOR, turbine

185–124

185–118

111–508

222–321

S CUSHION

VALVE, electrostatic

224–194 SHAFT ASSY., air valve

185–115 NUT, packing

PTFE

VALVE ASSY., fan air

1

1

1

1

1

1

1

1

1

1

1

1

1

1

O-RING, trigger valve; fluoroelastomer 1

105–452 U-CUP, 1

1

1

1

1

1

1

1

43b

43c

43d

105–681

191–805

185–090

Includes items 43b–43e

43e { 103–557 S O-RING, Viton

44

45

S

S

S

RING, retaining

KNOB, fan air adjustment

HOUSING, valve

185–116 SPRING, compression, air valve

238–895 VALVE ASSY., fluid adjustment

45a

45b

45c

45d

45e

Includes items 45a–45e

186–826 S STEM, fluid adjustment

111–516 S O-RING, CV75

186–822 S KNOB

191–794 S SLEEVE, guide

191–795 S STOP, sleeve

107–107 REGULATOR, disc

110–082 RING, retaining

46

47

62 }

63 }

66

67

191–744 TOOL, multi

107–460 WRENCH, barrel

185–103

110–231

TUBE, exhaust; polyurethane

CLAMP, exhaust tube

69 } 110–086 TOOL, hex key, allen wrench; 2 mm 1

71 }Y 180–060 SIGN, warning, English

1

1

1

1

1

1

1

1

1

1

1

1

72

76

77

}

}

}

See Accessories for additional signs 1

180–209 COVER, gun; Order Part No. 218–374 for package of 10

235–300 BRACKET, gun hanging

185–079 PLUG, optional, to install in place of item 31

1

1

1

2

1

1

1

1

1

* These parts are included in Fluid Seal Repair Kit

223–020, which may be purchased separately .

{ These parts are included in Air Seal Repair Kit 223–021, which may be purchased separately .

} Parts not shown.

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

307–912 35

Accessories

Use Only Genuine Graco Parts and Accessories

AIR LINE ACCESSORIES

Conductive Air Supply Hose; black


FM Approved; Color coded black; 0.315 in. (8 mm) ID;

1/4 npsm(f) x 1/4 npsm(f) left-hand thread

220–444 6 ft (1.8 m)

218–100 15 ft (5 m)

218–101 25 ft (8 m)

218–102 36 ft (11 m)

218–103 50 ft (15 m)

220–119 75 ft (23 m)

220–120 100 ft (30.5 m)

Conductive Air Supply Hose; gray


FM Approved; Color coded gray; More flexible than black hose; 0.315 in. (8 mm) ID; 1/4 npsm(f) x 1/4 npsm(f) left-hand thread

223–068 6 ft (1.8 m)

223–069 15 ft (5 m)

223–070 25 ft (8 m)

223–071 36 ft (11 m)

223–072 50 ft (15 m)

223–073 75 ft (23 m)

223–074 100 ft (30.5 m)

Conductive Air Supply Hose; red


Meets CENELEC EN 50 050 requirement for metallic ground path; Color coded red; Stainless steel braid ground path; 0.315 in. (8 mm) ID; 1/4 npsm(f) x 1/4 npsm(f) left-hand thread

235–068 6 ft (1.8 m)

235–069 15 ft (5 m)

235–070 25 ft (8 m)

235–071 36 ft (11 m)

235–072 50 ft (15 m)

235–073 75 ft (23 m)

235–074 100 ft (30.5 m)

Air Swivel Fitting 236–129


Replaces standard fitting (item 17 in Parts List); 1/4 npsm(m) left-hand thread

Extended Air Fitting 189–191

Replaces standard fitting (item 17 in Parts List) to provide an extended handle grip area.

Air Shutoff Valve 224–754


For turning air to gun off or on. 1/4 npsm(m) x

1/4 npsm(f) left-hand thread

Air Adapter Nipple 185–493

For connecting two or more grounded gun air supply hoses. 1/4 npt x 1/4 npsm left-hand thread

Quick Disconnect Swivel Coupling Assy. 112–534

Includes a quick disconnect coupling insert, which replaces air inlet fitting 185–105, and a swivel shut-off coupling body (left-hand thread), which connects to the grounded air hose.

Bleed-type Master Air Valve 107–141


Relieves air trapped in the air line between the paint pump air motor and this valve when closed. 3/4 npt

36 307–912

Accessories


FLUID LINE ACCESSORIES

Fluid Hose Assemblies (Nylon)


FM Approved; 1/4 in. (6.35 mm) ID, 3/8 npsm(fbe)

SPRAY SYSTEM ACCESSORIES

Electrostatic System 223–106

Includes:

215–637 25 ft (8 m)

215–638 50 ft (15 m)

215–639 75 ft (23 m)

215–640 100 ft (30.5 m)

215–641 150 ft (46 m)

Fluid Hose Assemblies (Nylon)


FM Approved; 1/4 in. (6.35 mm) ID, 3/8 npsm(fbe)

222–300 Electrostatic Air Spray Gun

223–070 Grounded Air Hose; 25 ft (8 m)

216–076 Fluid Hose; 25 ft (8 m)

106–148 Air Filter


Includes:

216–076 25 ft (8 m)

216–077 50 ft (15 m)

216–078 75 ft (23 m)

216–079 100 ft (30 m)

216–080 150 ft (46 m)

Fluid Tube ( PTFE 185–806


For reducing flushing time. Replaces item 12 in parts list. 0.078 in. (1.98 mm) ID, 0.375 in. (9.53 mm) OD,

5.50 in. (139 mm) long

Fluid Shutoff/Drain Valve


For turning fluid off or on to the gun and for relieving fluid line pressure at the pump

208–630 1/2 npt(m) x 3/8 npt(f); carbon steel and

PTFE

210–071 3/8 npt(m) x 3/8 npt(f); stainless steel and

PTFE

for non-corrosive fluids

for corrosive fluids



206–199 Air Regulator with Gauge


158–491 Nipple

158–212 Bushing

164–672 Adapter


Includes:





158–491 Nipple

158–212 Bushing

164–672 Adapter


Includes:





158–491 Nipple

158–212 Bushing

164–672 Adapter

Continued on page 38.

307–912 37

Accessories


MISCELLANEOUS ACCESSORIES

Snap Ring Pliers 110–090

For removing the ES ON-OFF Valve Retaining Ring

(item 47 in Parts List).

ES ON/OFF Valve Conversion Kit 223–976

Converts the ES ON/OFF Valve to a constant on setting. A ball valve is included for complete air shutoff at the gun.

Paint Resistance Meter 722–886

Used with 722–860 Paint Probe to measure resistance of paint. Not for use in Hazardous areas.

Paint Probe 722–860

Used with 722–886 Paint Resistance Meter to measure resistance of paint. Not for use in Hazardous areas.

Gun High Voltage Probe & Meter 217–452

For direct measurement of gun output voltage.

Grounding Clamp And Wire 222–011

12 ga, 25 ft (7.6 m) wire

Push-Pull Pattern Adjustment Valve 224–883

Pattern adjustment valve that allows quick adjustment of the pattern width between two adjustable settings.

Four–finger Trigger Conversion Kit 223–054

FM Approved; For converting from two-finger trigger to four-finger trigger.

Converting To A Waterborne System

FM Approved; Contact your Graco representative for information on converting Model PRO 3500sc spray gun to Model PRO 3500WB waterborne spray gun, for use in a waterborne system. Refer to Instruction

Manual 308–584.

High Conductivity Gun Conversion Kit 223–451

For converting PRO 3500sc gun to PRO 3500hc gun.

REFERENCE ONLY

Not Included

Safety Warning Signs

FM Approved; Available at no charge from Graco.

Must be ordered separately.

180–060 Warning Sign (English)

180–061 Warning Sign (French)

180–062 Warning Sign (German)

180–063 Warning Sign (Spanish)

Megohmmeter 218–979

500 Volt output; 0.01–2000 megohms.

Not for use in Hazardous areas.

High Conductivity Hose Kit 223–780

Installation of this kit enables the PRO 3500sc gun to apply fluids with a resistivity range of 2.0 megohm cm to infinity.

38 307–912

Category

Gun Weight

Gun Length

Maximum Working

Pressure

Air Pressure

Operating Range

Fluid Pressure

Operating Range

Voltage Output

Paint Resistivity

Range

Air Inlet

Fluid Inlet

Typical Noise Level at 40 psi (2.8 bar,

0.28 MPa)*

Maximum Noise

Level at 100 psi

(7 bar, 0.7 MPa)**

Data

1.87 lb (0.85 Kg)

9.5 in. (240 mm)

100 psi (7 bar, 0.7 MPa)

0–100 psi (0–7 bar,

0–0.7 MPa)

0–100 psi (0–7 bar,

0–0.7 MPa)

0–65 kV

7 megohm-cm to infinity

1/4 npsm(m) left-hand

3/8 npsm(m)

Sound Pressure

Sound Power

Sound Pressure

Sound Power

}

}

{

{

87 Db(A)

90.4 Db(A)

99 Db(A)

105.4 Db(A)

Technical Data

Category

Wetted Parts

Data

Stainless Steel, Polyethylene,

Nylon, Acetal,

PTFE

r , Ultra

High Molecular Weight

Polyethylene, Ceramic,

Fluoroelastomer, Music Wire

* Noise levels measured with a 40 psi (2.8 bar) air supply at the gun air inlet and typical gun air flow settings.

** Noise levels measured with a 100 psi (7 bar) air supply at the gun air inlet and maximum gun air flow settings.

{ Sound pressure was measured per Cagi Pneurop, 1969.

} Sound power was measured per ISO–3744, 1981.

PTFE , V iton r , and Kalrez r

Loctite r is a registered trademark of the Loctite Corporation.

Chemraz r is a registered trademark of the Green, Tweed and Company .

Manual Change Summary

The manual was updated to show the series B changes to the gun.

307–912 39

The Graco Warranty and Disclaimers

WARRANTY

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 warranty, Graco will, for a period of twelve months or two thousand hours of operation from time of sale, repair or replace any part of the equipment proven defective. However, any deficiency in the barrel, handle, trigger, hook, internal power supply, and alternator (excluding turbine bearings) will be repaired or replaced for thirtysix months or six thousand hours of operation from time of sale. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco’s written recommendations.

This warranty does not cover, and Graco shall not be liable for, any malfunction, damage or wear caused by faulty installation, misapplication, 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, installation, 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.

DISCLAIMERS AND LIMITATIONS

The terms of this warranty constitute purchaser’s sole and exclusive remedy and are in lieu of any other warranties (express or implied), including warranty of merchantability or warranty of

fitness for a particular purpose, 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.

EQUIPMENT NOT COVERED BY GRACO WARRANTY

Graco makes no warranty, and disclaims all implied warranties of merchantability and fitness

for a particular purpose, 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.

Graco Phone Number

TO PLACE AN ORDER, contact your Graco distributor, or call Graco: 1–800–367–4023 Toll Free

All written and visual data contained in this document reflects the latest product information available at the time of publication.

Graco reserves the right to make changes at any time without notice.

Sales Offices: Atlanta, Chicago, Detroit, Los Angeles

Foreign Offices: Belgium, Canada, England, Korea, Switzerland, France, Germany, Hong Kong, Japan

GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441

PRINTED IN U.S.A. 307–912 January 1989, Revised September 1996

40 307–912

Graco 307912Y Model PRO 3500 Electrostatic Air Spray Gun Owner's Manual

Model PRO 3500sc

Electrostatic Air Spray Gun

65 kV, MANUAL GUN

100 psi (7 bar, 0.7 MPa) Maximum Working Pressure

Part No. 222–300, Series B

With Two–Finger Trigger

Part No. 222–600, Series B

With Four–Finger Trigger

Rev. Y

Supersedes Rev. V and PCN W

Part No. 222–300 shown

GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441

Warning Symbol

Caution Symbol

WARNING

FIRE, EXPLOSION, AND ELECTRIC SHOCK HAZARD

TOXIC FLUID HAZARD

WARNING

PRESSURIZED EQUIPMENT HAZARD

EQUIPMENT MISUSE HAZARD

How the Electrostatic Air Spray Gun Works

Installing the System

Warning Signs

Ventilate the Spray Booth

Non-hazardous Area

Hazardous Area

Connect the Air Line

Connect the Exhaust Tube

Connect the Fluid Line

Ground the System

Check the Electrical Grounding (See Fig. 2)

Pressure Relief Procedure

Operating Checklist

Filter the Fluid

Selecting a Fluid Nozzle and Air Cap

Operating the Spray Gun

Operating the Spray Gun (continued)

Shutdown

Daily Care and Cleaning

Clean the Air Cap and Fluid Nozzle

Flush the Spray Gun

Spray Pattern Troubleshooting

Gun Operation Troubleshooting

Electrical Troubleshooting

Test Gun Resistance

Test Power Supply Resistance

Test Resistor Stud Resistance

Test Resistor Stud Resistance (continued)

Prepare the Gun for Service

Air Cap/Nozzle/Resistor Stud

Replacement

Air Cap/Nozzle/Resistor Stud

Replacement (continued)

Electrode Replacement

Barrel Removal

Fluid Packing Removal

Fluid Packing and Needle Repair

Power Cartridge Replacement

Turbine Alternator Replacement

Barrel Installation

Fan Air Adjustment Valve Repair

PTFE

Fluid Adjustment Assembly Repair

Air Trigger Valve Repair

Atomizing Air Valve Removal and

Replacement

PTFE

ES ON-OFF Valve Repair

Part No. 222–300

Part No. 222–600 Electrostatic Air Spray Gun

Use Only Genuine Graco Parts and Accessories

AIR LINE ACCESSORIES

Use Only Genuine Graco Parts and Accessories

FLUID LINE ACCESSORIES

SPRAY SYSTEM ACCESSORIES

Use Only Genuine Graco Parts and Accessories

MISCELLANEOUS ACCESSORIES

PTFE

GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441