This manual contains IMPORTANT

WARNINGS AND INSTRUCTIONS

READ AND RETAIN FOR REFERENCE

ELECTROSTATIC AIR SPRAY

WATER-BASE SYSTEM

307–978

Rev. L

Supersedes J

Includes K

Model PRO 3500WB Air Spray Gun

U.S. PATENT NO. D313,064; 4,978,075

Model WB3500 Voltage Control

For use with Electrostatic Air Spray Systems when spraying conductive, water-based fluids having flash points above 140 F (60 C) and a maximum 20%, by weight, organic solvent concentration.

COMPONENTS OF THE PRO 3500WB SYSTEM

ISOLATION STAND

Part No. 223–445; 15 gallon (57 liters)

Part No. 727–212; 55 gallon (209 liters)

WB3500 VOLTAGE CONTROL

Part No. 223–477

PRO 3500WB SPRAY GUN WITH AIR & FLUID HOSES

Part No. 223–518; 25 ft (7.6 m) hose length

Part No. 223–519; 36 ft (11.0 m) hose length

Part No. 223–520; 50 ft (15.3 m) hose length

SAFETY FENCE

Part No. 110–614

CONVERSION KIT

Part No. 223–114

GUN HOLSTER

Part No. 236–090

NOTE: See the PARTS DRAWINGS and LISTS for a complete list of part numbers.

CONTENTS

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Typical Installation

Introduction

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

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

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

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

5

12

4

5

Cleaning and Maintenance

Troubleshooting Charts

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

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

16

18

Spray Gun Electrical Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Spray Gun Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Voltage Control Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

24

31

Converting PRO 3500SC Gun to PRO 3500WB Gun . . . . 32

Spray Gun Service Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Spray Gun Parts Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . .

Spray Gun Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

36

37

Voltage Control Parts Drawing

Voltage Control Parts List

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

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

38

39

Isolation Stand Parts Drawing and List . . . . . . . . . . . . . . . .

Fluid Hose Assembly Parts Drawing and List . . . . . . . . . . .

40

41

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Spray Gun Technical Data

Warranty

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

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

Back Cover

Back Cover

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

COPYRIGHT 1989, GRACO INC.

WARNINGS

SERIOUS BODILY INJURY, EXPLOSION, FIRE, OR ELECTRIC SHOCK CAN

OCCUR IF THE PRECAUTIONS BELOW ARE NOT FOLLOWED.

READ AND UNDERSTAND ALL INSTRUCTION MANUALS, TAGS, AND WARNING

LABELS BEFORE OPERATING EQUIPMENT.

ELECTROSTATIC EQUIPMENT SHALL ONLY BE USED BY TRAINED, QUALIFIED

PERSONNEL WHO SHALL BE FULLY CONVERSANT WITH THE REQUIREMENTS

STATED WITHIN THIS INSTRUCTION MANUAL.

FIRE, EXPLOSION, OR ELECTRIC SHOCK HAZARD

This system is designed to be used ONLY to dispense waterbase fluids, with flashpoints above 140 F (60 C) and less than 20%, by weight, organic solvent concentration. When spraying water-base fluid electrostatically, the entire fluid supply is isolated from ground to maintain voltage at the tip of the gun.

To reduce the risk of fire, explosion, or electric shock, which may result from electrical discharge:

Ground the electrostatic system.

Ground all personnel in or close to the spray area.

Ground all electrically conductive objects or devices in the spray area, including paint containers, wash cans and tools.

Electrically connect a metal part of the fluid supply unit to the voltage control.

Enclose the fluid supply in a safety fence that prohibits personnel from approaching the fluid supply before discharging the system.

Do not touch the gun nozzle or come within 4 in. (101.6 mm) of the nozzle during gun operation or for 30 seconds after operation stops to allow the voltage to discharge through the voltage control. It is recommended that the operator hold the gun in hand or hang it in the gun holster during this 30 second period. See ACCESSORIES to order the gun holster.

When operating the electrostatic gun, any ungrounded objects in the spray area (such as people, containers, tools, etc.) can become electrically charged. Arcing may occur if these objects then come in contact or close to ground.

Static electricity can also be generated by flow of fluid through the fluid supply unit, hose, gun, and nozzle, but it is dissipated through proper grounding as described in Grounding, below.

If you experience any arcing or feel even a slight shock, STOP

SPRAYING IMMEDIATELY. Check for proper grounding of the entire system. Be sure you have corrected the problem before starting to spray again.

Grounding

The following are minimum requirements for grounding a basic electrostatic system. Your system may include other equipment or objects which must also be grounded. Always check your local electrical code for detailed grounding instructions. Be sure your system is connected to a true earth ground.

1.

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

2.

Gun Air Supply Hose: use ONLY Graco Electrically Conductive Air Supply Hose as specified in this manual; see the ACCESSORIES section to order. Connect the air hose ground cable to a true earth ground.

3.

Electrostatic Air Spray Gun: obtain grounding through connection to a properly grounded Graco Electrically Conductive Air Supply Hose.

4.

Voltage Control: electrically connect to a true earth ground.

5.

Safety Fence: electrically connect to a true earth ground.

6.

Grounding Rod: electrically connect to a true earth ground.

7.

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

8.

All persons entering the spray area: shoes must have conductive soles, such as leather, and personal grounding straps must be worn. Rubber or plastic soles are not conductive. The operator must not wear gloves which insulate the hand from the spray gun. The gloves must be conductive or modified as shown on page 12.

9.

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.

10.

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

11.

All solvent pails: use only grounded metal pails, which are conductive. Do not place the pail on any non-conductive surface, such as cardboard or paper, which would interrupt grounding continuity.

Isolate High Voltage Equipment

The fluid supply MUST be isolated from all personnel. Place a safety fence around the fluid supply to ensure it is safely isolated. A safety fence air line interlock MUST be installed to shut off the high voltage anytime the gate is opened. See the TYPI-

CAL INSTALLATION drawing and read and follow the

INSTALLATION instructions.

FIRE, EXPLOSION, OR ELECTRIC SHOCK HAZARD

Voltage Discharge Procedure

To reduce the risk of electric shock, which could cause serious injury, ALWAYS follow this procedure when entering the safety fence.

Be sure the spray gun ES valve lever is OFF and the equipment has been properly grounded before flushing or cleaning any part of the spray system.

1.

Disengage the air line interlock. This will turn off the air to the gun and trigger the dump switch to discharge the electrical charge.

Use the lowest possible pressure to flush. Trigger the gun into a grounded metal waste container.

ALWAYS use solvents with a flash point above 140 F (60 C) to flush, purge, or clean the gun or spray system.

2.

Enter the safety fence area and remove the grounding rod from the fence. Grasp the grounding rod by the hook end of the handle. Touch the exposed wire of the grounding rod to a metal surface of the fluid source; see Fig 10, page 13. If an arc is detected, correct the problem before doing anything further with the system. See TROUBLESHOOTING on page 21.

3.

Before leaving the safety fence, ALWAYS make sure that the paint source is connected to the voltage control.

ALWAYS remove all solvent from the system before reactivating the spray gun.

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

Ventilate the Spray Booth

To prevent hazardous concentrations of toxic and/or flammable vapors, spray only in a properly ventilated spray booth.

Flushing and Cleaning Safety

To reduce the risk of static sparking or splashing, always follow the Pressure Relief Procedure, below, before flushing.

Check and follow all National, State and Local codes regarding air exhaust velocity requirements. Check and follow all local safety and fire codes and OSHA standard 1910.107.

NEVER operate the spray gun unless the ventilating fans are operating.

EQUIPMENT MISUSE HAZARD

General Safety

Any misuse of the spray equipment or accessories, such as over pressurizing, modifying parts, using incompatible chemicals and fluids, or using worn or damaged parts, can cause them to rupture and result in serious bodily injury, fire, explosion or property damage.

NEVER point the spray gun at anyone or at any part of the body.

NEVER put hand or fingers over the spray nozzle.

ALWAYS follow the Voltage Discharge Procedure and Pres-

sure Relief Procedure, at right, before cleaning or removing the fluid nozzle or servicing any system equipment.

NEVER try to stop or deflect leaks with your hand or body.

NEVER alter or modify any part of this equipment; doing so could cause it to malfunction.

NEVER enter a high voltage or hazardous area until after all high voltage equipment has been discharged. A safety fence air line interlock MUST be installed to shut off the high voltage anytime the gate is opened.

CHECK all spray equipment regularly and repair or replace worn or damaged parts immediately.

System Pressure

This system has a MAXIMUM WORKING PRESSURE of 100 psi (7 bar). Never exceed the maximum working pressure of any component or accessory used in the system.

Fluid Compatibility

Only use fluids having flashpoints above 140 F (60 C) and less than 20%, by weight, organic solvent concentration. BE

SURE all fluids and solvents used are chemically compatible with wetted parts in your system. (The gun wetted parts are listed on the back page.) Always read the fluid and solvent manufacturer’s literature before using the fluid or solvent in the system.

Pressure Relief Procedure

To reduce the risk of serious bodily injury, including splashing in the eyes or on the skin, injury from moving parts or electric shock, ALWAYS follow this procedure when shutting off the system, when checking or servicing any part of the spray system, when installing, cleaning or changing fluid nozzles, and whenever you stop spraying.

1.

Turn the spray gun ES On-Off valve lever to OFF.

2.

Follow the Voltage Discharge Procedure, above.

3.

Turn off the fluid supply to the gun.

4.

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

5.

Relieve fluid pressure in the fluid supply unit as instructed in your fluid supply unit manual.

HOSE SAFETY

TIGHTEN all fluid connections securely before each use.

HANDLE AND ROUTE HOSES CAREFULLY. The fluid hose

MUST be routed over head from the safety fence to the spray area. Do not pull on hoses to move equipment.

DO NOT use fluids or solvents that are not compatible with the inner tube and cover of the hose. Read Fluid Compatibility, above, and refer to the hose description in ACCESSORIES on page 42.

NEVER use a damaged hose. Before each use, check the entire hose for cuts, leaks, abrasion, bulging cover, or damage or movement of the hose couplings. If any of these conditions exist, replace the hose immediately.

IMPORTANT

United States Government safety standards have been adopted under the Occupational Safety and Health Act. These standards––particularly the

General Standards, Part 1910.107 and any other appropriate regulations––should be consulted in connection with the installation, operation, and maintenance of electrostatic spray painting equipment.

X*

F*

P*

TYPICAL INSTALLATION

N* Q* C*

B H*

E T

WARNING

A*

W*

R

Y*

U*

G

SPRAY GUN

D

REF C*

REF F*

5

AIR MANIFOLD ASSEMBLY

1

2

4

3

3

V

S*

J*

M

K*

L*

*Equipment that must be installed for safe operation of a water-base system

INTRODUCTION

This system is designed to be used ONLY with waterbase fluids, with flashpoints above 140 F (60 C) and less than 20%, by weight, organic solvent concentration.

When you use conductive, water-base fluids in an electrostatic system, the fluids in the spray gun (D), fluid line

(F), and fluid supply unit (M) are charged to high voltage.

The entire fluid supply is isolated from ground to maintain voltage at the tip of the gun.

For proper operation and safety , this high voltage MUST be isolated both from ground and from contact with people. The high voltage is isolated from ground by the insulated fluid line (F), isolation stand (K), and voltage control

(L). Safety protection is provided by the safety fence (J), air-line interlock (H), and voltage control (L).

1

2

3

4

5

Gun Grounded Air Supply Hose Connector

Safety Fence Air Line Interlock Connector

Plug

Voltage Control Air Hose Connector

Pressure Pot Connector; includes check valve to minimize the volume of air discharged when air line interlock is disconnected

INSTALLATION

KEY TO TYPICAL INSTALLATION DRAWING

Ref Letter Part No.

Description

A*

B

C*

–

206–199

235–070 (25’)

235–071 (36’)

235–072 (50’)

Grounded Main Air Supply Line

Gun Air Pressure Regulator

Gun Grounded Air Supply Hose

D 222–700 Water-base Electrostatic Spray Gun

E

F*

L*

M

N*

G

H*

J*

K*

P*

–

185–918 (25’)

185–919 (36’)

185–920 (50’)

Fluid Supply Air Pressure Regulator

Gun Insulated Fluid Supply Hose

223–640

–

Air Manifold Assembly

Safety Fence Air Line Interlock

110–614 Safety Fence

223–445 or 727–212 Isolation Stand

223–639

–

Voltage Control

Fluid Supply Unit

208–591 Fluid Supply Unit Non-conductive Air

Supply Hose

185–972 & 185–971 Strain Relief/Ground Terminal

Assembly Included With

–

223–518 (25’)

223–519 (36’)

223–520 (50’)

–

See front cover

223–518 (25’)

223–519 (36’)

223–520 (50’)

SST Pressure Tanks

See front cover

223–192 (25’)

223–193 (36’)

223–194 (50’)

223–477

223–640 See page 39

–

–

223–477

–

223–477

Q*

V*

W*

X*

Y*

R

S*

T

U*

–

223–446

223–447

186–119

210–084

110–790

223–685

223–547

223–548

Gun Air Hose Ground Wire

Voltage Control Air Hose

Safety Fence Interlock Air Hose

Safety Fence Warning Sign

Grounding Rod

U-Bolts and Plate

Fence Ground Wire

Main Ground Wire

Voltage Control Ground Wire

WARNING

A safety fence (J), non-conductive hoses, isolation stand (K), and voltage control (L) MUST be installed to isolate the fluid in the fluid line (F), and fluid supply unit (M) from ground and to prevent people from contacting portions of the system that are charged to high voltage. This helps reduce the risk of electric shock, which could cause serious injury.

The Typical Installation shown on page 4 is only a guide for selecting and installing a water-base 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 representative.

223–192 (25’)

223–193 (36’)

223–194 (50’)

218–663 (25’)

218–664 (36’)

218–665 (50’)

223–477

223–477

223–477

223–477

223–477

223–477

223–477

223–639

See Page

–

43

42

37

42

40

39

–

42

41 or 42

39

42

39

40

42

39

39

39

39

39

39

39

39

WARNING

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

Check and follow all local safety and fire codes,

NFPA 33, NEC 504 and 516, and OSHA standard

1910.107.

Warning Signs

Mount warning sign 186–118 (included with the spray gun) in the spray area where it can easily be seen and read by all operators. Mount warning sign 186–119

(included with the voltage control) on the safety fence gate, as designated on the bottom of the sign. Additional warning signs are available at no charge. See the spray gun and voltage control PARTS LISTS or the

ACCESSORIES section to order them.

INSTALLATION

Ventilate the Spray Booth

WARNING

To prevent hazardous concentrations of toxic and/ or flammable vapors, spray only in a properly ventilated spray booth. Never operate the spray gun

unless ventilation fans are operating. The air supply to the gun must be electrically interlocked with the ventilators to prevent operation of the power supply unless ventilating fans are running.

Check and follow all National, State and Local codes regarding air exhaust velocity requirements.

6 ft.

(1.83 m)

6 ft.

(1.83 m)

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.

Install the Safety Fence

Install the safety fence as shown in Fig 1 or an equivalent safety fence as specified below. Anchor the fence to the floor as specified in Fig 2.

Safety Fence Specifications

1.

The fence MUST provide at least a 6 x 6 x 6 ft. (1.83

x 1.83 x 1.83 m) protective area. See Fig 1.

2.

This area MUST ONLY be accessible through a single gate. This gate MUST be hinged and latched so it only opens outwards.

3.

The fence MUST be constructed so it can be bolted to the floor and and can withstand any forces induced by vehicles, equipment, or personnel in the area, without reducing the protection provided. See Fig 2.

4.

The fence MUST be constructed so there is no more than 6 inches (152 mm) of clearance between the bottom of any portion of the fence and the building floor.

5.

The shape of the mesh pattern in the fence sides and gate is optional, but it MUST restrict a 2.5 inch

(64 mm) diameter spherical object from passing through it.

6.

The fence MUST be painted a high visibility yellow.

7.

A means MUST be provided to connect the fence to true earth ground. There must be electrical continuity between all sides of the fence and the gate.

Install the Isolation Stand

1.

Position the isolation stand inside the safety fence.

The isolation stand MUST be placed in the center of the fence so it is a minimum of 20 inches (508 mm) from any side of the fence.

2.

To help keep the stand from moving, install one

1/2 inch (13 mm) bolt in the floor in the position of the one hole in the bottom of the isolation stand. Refer to

Fig 2 and 3.

Fig 1

1/2 in. (13 mm) dia. “Red Head”

Anchor Bolt (or equivalent) with maximum 2 ft. (0.6 m) spacing on fence flange

Fig 2

Bolt

Hole

4 in.

(102 mm) minimum

6 ft.

(1.83 m)

Safety Fence

Concrete Floor

Fig 3

ISOLATION STAND: BOTTOM VIEW

3.

Place the isolation stand’s bolt hole over the bolt in the floor.

INSTALLATION

Install the Voltage Control

The voltage control (L) contains a bleed resistor, which continually bleeds current to ground, and a quick-dump switch, which dumps the charge to ground whenever the safety fence air-line interlock (G) is disconnected to open the gate. Refer to the Typical Installation Drawing.

Install the Strain Relief/Ground Terminal and Fluid Hose Assembly

Two plates (311 & 312) are provided to relieve strain and ground the fluid hose conductive hose layer. They also function as a grounding terminal as shown in Fig 6, page

8. Mount the plates, with the fluid hose, to the side of the fence as shown in Fig 5.

1.

Place the voltage control 4 inches (102 mm) from the edge of the isolation stand.

2.

Measure the resistance between the isolation stand grounding grate and the voltage control ground. The resistance should be less than 20 ohms.

Connect the Fluid Hose to the Spray Gun

1.

Remove the exhaust tube clamp (67) and air fitting

(17) from the spray gun. See Fig 5.

3.

Secure the voltage control to the floor with four 1/2 inch (13 mm) anchor bolts. See Fig 4.

2.

Using petroleum jelly, lubricate o-ring (304) on hose barbed insert (301). Then push the hose barbed insert into the gun barrel until the gun barrel is pressed against shoulder of the barbed insert (301).

4.75 in.

(121 mm)

3.

Tighten the fitting (302) until the o-ring on the fitting is compressed to about half its original thickness.

4.75 in.

(121 mm)

Fig 4

VOLTAGE CONTROL: BOTTOM VIEW

4.

Tighten the nut (305) against the fitting (302).

5.

Align the bracket (309) holes with the air inlet and exhaust outlet, and secure the bracket with the air fitting (17) and exhaust tube clamp (67).

NOTE: The fluid hose (306) consists of an insulated layer, a conductive layer, and an abrasion-resistant outer layer. The conductive layer is connected to ground at the strain relief/ground terminal (311 & 312) and gun fitting bracket (309).

KEY

17 Air Fitting

67 Exhaust Tube Clamp

301 Barbed Insert

302 Fitting

304 O–Ring

305 Nut

306 Fluid Hose

307 Ferrule

308 Ferrule

Housing

309 Gun Fitting

Bracket

302

311/312 Strain Relief/

Ground Terminal Plates

305

306

309

17

67

REF

306

312

311

Safety

Fence

301 304 302 305 307

308

309

Outer

Hose

Jacket

Outer

Hose

Jacket

312

311

308

306

310

Conductive Hose Layer

MUST NOT extend beyond ferrule (307)

Conductive

Hose Layer

Fig 5

INSTALLATION

Install the Interconnect Cables

1.

Connect the interconnect cable (406) between the terminal block and voltage control. See Fig 6. Fasten the cable in cable clamp to provide strain relief.

2.

Connect the voltage control ground cable (127) to the strain relief/ground terminal.

3.

Connect the strain relief/ground terminal cable (X) to a true earth ground.

4.

Connect the strain relief/ground terminal cable (W) to the safety fence.

Install the Grounding Rod

Connect the grounding rod to the strain relief/ground terminal. See Fig 6. Hook the grounding rod onto the fence near the gate, as shown in Typical Installation.

Install the Fluid Supply Unit

1.

Place the fluid supply unit on the isolation stand. See

Fig 6.

2.

Connect the cable’s (405) c-clamp from the isolation stand terminal block to a metal part of the fluid supply unit.

406

Voltage Control Cable

404

Terminal Block

405

Fluid Supply

Cable

Connect cable 223–685

(W) between strain relief/ ground terminal & safety fence

(approx. 1 ft (0.3 m) long)

402

Grounding Grate

401

Isolation Stand

Strain Relief/

Ground Terminal

Electrically

Conductive

Gun Air

Supply Hose

Connect cable

223–529 (406) between terminal block & voltage control

Connect cable 223–547

(X) between strain relief/ ground terminal & true earth ground (approx. 25 ft

(7.6 m) long)

Grounding

Rod

Fluid Supply Unit

Connect cable 223–539

(405) between terminal block & metal part of fluid supply unit

Isolation

Stand Connect cable 223–548

(127) between voltage control base-plate & strain relief ground terminal

Fig 6

Cable Clamp

Voltage

Control

INSTALLATION

Install the Air Line Interlock

Install the air line interlock. Use the u-bolts and brackets to secure the air line in place. Mount the air manifold to the safety fence. See Typical Installation.

WARNING

Never tamper with or bypass the air-line interlock as this could cause electric shock and result in serious injury.

Connect the Air Lines

1.

Connect the 1/4 in. ID nylon non-conductive air hose

(N) between the air manifold and the fluid supply.

Refer to the TYPICAL INSTALLATION drawing on page 4.

2.

Connect the 3/8 in. ID air hose (S) between the main air supply line and the air manifold air line interlock fitting.

3.

Connect the 5/16 in. ID air hose (R) between the air manifold and the voltage control air inlet.

4.

Install a bleed-type air regulator on the fluid supply unit and gun air supply lines to control air pressure to the fluid supply unit and gun.

5.

Connect the gun’s electrically conductive air supply hose (C) between the air regulator and the gun’s air inlet. (The gun air inlet fitting has a left hand thread.)

Connect the air supply hose ground cable (Q) to the strain relief/ground terminal.

6.

Install an air line filter and an air and water separator 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. A combination air filter/moisture separator is shown in the ACCESSORIES section.

7.

Install a bleed-type air shutoff valve on the main air line and the fluid supply unit line to shut off air to the fluid supply unit and/or gun(s). Install an additional bleed-type valve on each fluid supply unit’s air supply line to relieve air trapped between this valve and the fluid supply unit after the air regulator is shut off.

WARNING

The bleed-type air shutoff valve is required in your system to relieve air trapped between this valve and the fluid supply unit after the air regulator is closed. Trapped air can cause the gun to spray unexpectedly, which could result in serious bodily injury, including splashing in the eyes or on the skin and injury from moving parts.

8.

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

Connect the Fluid Line

1.

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

2.

Install a fluid filter at the fluid supply unit outlet.

3.

Connect the fluid line to the fluid supply unit.

WARNING

To reduce the risk of electric shock or other serious bodily injury, the gun air supply hose must be electrically connected to a true earth ground. Use Only

Graco Electrically Conductive Air Supply

Hose, as specified in the ACCESSORIES section of this manual. This hose, and the gun, have special threads which prevent using any other type of hose with the gun.

INSTALLATION

Check the Electrical Grounding

WARNING

Proper electrical grounding of your system is essential. For your safety, read the warning section, FIRE, EXPLOSION, OR ELECTRIC

SHOCK HAZARD, on page 2. Ground the system as explained there. Then check your system as explained below.

True Earth

Ground

1.

Turn the gun ES On–Off Valve Lever to OFF (O). See

Fig 11, page 14, for the location of the ES On–Off lever.

2.

Turn off the air and fluid supply to the gun.

3.

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

a.

With the electrically conductive air hose connected and properly grounded, use an ohmmeter to measure the resistance between the gun handle and a true earth ground. See Fig 8.

b.

If the resistance is greater than 100 ohms, check the tightness of the ground connections, and be sure the air supply hose ground cable is connected to a true earth ground. If the resistance is still greater than 100 ohms, replace the air supply hose.

Gun Handle

Fig 7

Fig 8

Ohmmeter

Grounded

Air Hose

NOTES

Operating Checklist

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

1.

Be sure all operators are properly trained to safely operate a water-base electrostatic air spray system.

2.

Be sure all operators are trained how to properly and completely relieve system pressure according to the Pressure Relief Procedure, at right.

3.

Be sure the system is thoroughly grounded.

See FIRE, EXPLOSION, OR ELECTRIC

SHOCK HAZARD, page 2 and 3, and Check

the Electrical Grounding, page 10.

4.

Be sure the electrostatics are turned off and grounded according to the Voltage Discharge

Procedure, at right, when any person enters the safety fence, before cleaning, and before performing any maintenance.

5.

Be sure the operator and all persons entering the spray area are properly grounded by wearing shoes with conductive soles and personal grounding straps.

6.

Operator must not wear gloves which insulate the hand from the spray gun. If worn, gloves must be conductive or modified as shown in

Fig 9 so as not to interfere with operator grounding through the gun.

7.

Be sure ventilation fans are operating properly.

8.

Be sure the workpiece hangers are clean and grounded. Contact points must be sharp points or knife edges.

9.

Be sure all refuse is removed from spray booth.

10. Only fluids having flashpoints above 140 F

(60 C) and less than 20%, by weight, organic solvent concentration may be in the spray area.

11. Be sure all conductive objects in the spray area are electrically grounded and the floor of the spray area is electrically conductive and grounded.

WARNING

To reduce the risk of serious bodily injury, including splashing in the eyes or on the skin, injury from moving parts or electric shock, ALWAYS follow the Pressure Relief Procedure, at right, when shutting off system, when checking or servicing any part of the spray system, when installing, cleaning or changing fluid nozzles, and whenever you stop spraying.

OPERATION

WARNING

To reduce risk of electric shock, which could cause serious injury, ALWAYS follow the Voltage Discharge

Procedure, below, when entering the safety fence.

Do not touch the gun nozzle or come within 4 in.

(101.6 mm) of the nozzle during gun operation or for

30 seconds after operation stops to allow the voltage to discharge through the voltage control. It is recommended that the operator hold the gun in hand or hang it in the gun holster during this 30 second period. See

ACCESSORIES to order the gun holster.

Voltage Discharge Procedure

1.

Turn the spray gun ES On-Off valve lever to

OFF (0). See Fig 11, page 14.

2.

Disengage the air line interlock. This will turn off the air to the gun and trigger the dump switch to discharge the electrical charge.

3.

Enter the safety fence area and remove the grounding rod from the fence. Grasp the grounding rod by the hook end of the handle. Touch the exposed wire of the grounding rod to a metal surface of the fluid source; See Fig 10, page 13. If an arc is detected, correct the problem before doing anything further with the system. See TROUBLESHOOTING on page 21.

4.

Before leaving the safety fence, ALWAYS make sure that the fluid source is connected to the voltage control.

Pressure Relief Procedure

1.

Turn the spray gun ES On-Off valve lever to

OFF (0). See Fig 11, page 14.

2.

Follow the Voltage Discharge Procedure, above.

3.

Turn off the fluid supply to the gun.

4.

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

5.

Relieve fluid pressure in the fluid supply unit as instructed in your fluid supply unit manual.

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 as not to interfere with operator grounding through the gun.

Fig 9

OPERATION

Safety

Fence

Cable

C-clamp

Grounding

Rod

Voltage

Control

Fluid

Supply

Fig 10

Removing Fluid Supply from Isolated Area

1.

Follow the Voltage Discharge Procedure and

Pressure Relief Procedure, on page 12.

2.

Disconnect the cable c-clamp from the fluid supply.

Refer to Fig 10.

3.

Remove the fluid supply.

Placing Fluid Supply in Isolated Area

1.

Place the fluid supply on the isolation stand. Refer to

Fig 10.

2.

Connect the cable c-clamp from the isolation stand terminal to a metal part of the fluid supply.

3.

Exit the fenced area.

4.

Connect the safety fence gate interlock.

Fig 11

Air Cap

Fluid Adjustment Screw

OPERATION

ES Indicator

Light

I

ES

O

ES On–Off Lever

1 is ON 0 is OFF

Fan Air

Control

Valve

Optional Air

Cap Control

Valve (See

ACCESSORIES)

Filter the Fluid

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

Install the Fluid Nozzle and Air Cap

WARNING

To reduce the risk of serious bodily injury, including splashing in the eyes or on the skin or electric shock, always follow the Pressure Relief Proce-

dure on page 12 before installing, or removing the fluid nozzle/air cap assembly.

Do not touch the gun nozzle or come within 4 in.

(101.6 mm) of the nozzle during gun operation or for 30 seconds after operation stops to allow the voltage to discharge through the voltage control. It is recommended that the operator hold the gun in hand or hang it in the gun holster during this 30 second period. See ACCESSORIES to order the gun holster.

1.

Choose the correct fluid nozzle and air cap combination for your application. See Manual 307–803 to select a fluid nozzle and air cap.

2.

Be sure the spray gun ES On-Off Lever is OFF

(0). See Fig 11.

3.

Install the air cap and fluid nozzle into the gun barrel as described in Air Cap/Nozzle/Resistor Stud

Replacement on page 24.

Adjust the Spray Pattern

Follow these steps to establish the correct fluid flow and air flow. DO NOT turn the ES On-Off lever to ON (1) yet:

1.

Adjust the fluid flow by using the fluid pressure regulator installed in the fluid line at the pressure source.

OPERATION

NOTE: If the fluid supply is a pump, the fluid regulator

MUST be installed at the pump outlet, not remote from the pump.

2.

First, complete all the checks under the Operating

Checklist on page 12. Then turn the ES On-Off lever to ON (1). When spraying, the ES indicator light should glow, indicating the electrostatic charge.

3.

Use an air pressure regulator to adjust the degree of atomization. Always use the lowest air pressure possible for the most efficiency.

4.

A minimum of 2.8 bar (40 psi) air supply is required to ensure full voltage from the power supply. The gun may be operated at a lower air pressure/voltage if required, but may lose some electrostatic wrap.

5.

If the flow to the air cap is still excessive after lowering the inlet pressure below 40 psi, the optional air cap control valve (see Fig 11) can be installed and used to limit air to the air cap. See ACCESSORIES.

6.

Use the fan air control valve to change the shape of the spray pattern. When increasing to a wide, flat pattern, it may be necessary to increase the supply of fluid to the gun to maintain the same amount of coverage over a large area.

NOTE: See SPRAY PATTERN TROUBLESHOOTING

CHART on page 18 to correct spray pattern problems.

CAUTION

ALWAYS hang the gun with its nozzle pointing down to avoid having solvent run into the gun air passages. Solvent in the gun air passages can cause poor atomization and excessive current demands and damage the gun.

CLEANING AND MAINTENANCE

Daily Care and Cleaning

WARNING

Before checking, adjusting, cleaning, or servicing any part of the spray system, and whenever entering the safety fence, ALWAYS follow the Pressure Re -

lief Procedure and the Voltage Discharge Proce-

dure on page 12. This will help reduce the risk of serious bodily injury, including splashing in the eyes or on the skin and injury from moving parts or electric shock.

WARNING

To reduce the risk of fire or explosion, which could cause serious injury and property damage, ONLY use solvents with flashpoints over 140 F (60 C) and with less than 20%, by weight, organic solvent content.

Cleaning the Voltage Control

Thoroughly clean the outer surfaces of the voltage control with a soft cloth dampened in a solvent that’s suitable for use in an electrostatic water-base system.

Clean the Air Cap and Fluid Nozzle

CAUTION

Do not use metal tools to clean the air cap holes as this may scratch them. Scratches in the air cap holes can distort the spray pattern.

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

Clogged air passages cause poor atomization and excessive current demands. Point the gun down while cleaning to prevent dirty solvent from running back into the air passages.

CAUTION

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

Immersing the gun in solvent is not recommended as a cleaning method. Solvent left in gun passages could result in a poor quality paint finish and may draw current and reduce the electrostatic effect.

Solvent in the power supply cavity can reduce the alternator life.

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.

3.

Clean the air cap and fluid nozzle daily, minimum.

Some applications require more frequent cleaning.

Replace the fluid nozzle and air cap if they are damaged. See Clean the Air Cap and Fluid Nozzle.

4.

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

Cleaning the Isolation Stand

WARNING

The grounding grate MUST be kept clean to ensure a good ground connection.This helps reduce the risk of electric shock, which could result in serious injury.

WARNING

Do not touch the gun nozzle or come within 4 in.

(101.6 mm) of the nozzle during gun operation or for 30 seconds after operation stops to allow the voltage to discharge through the voltage control. It is recommended that the operator hold the gun in hand or hang it in the gun holster during this 30 second period. See ACCESSORIES to order the gun holster.

Equipment needed:

Soft bristle brush (supplied).

Solvent compatible with fluid being sprayed.

Procedure:

1.

Follow the Voltage Discharge Procedure and

Pressure Relief Procedure on page 12.

2.

Remove the air cap assembly.

3.

With the front of the gun pointed down, clean the air cap, fluid nozzle, and front of the gun, using the soft bristle brush and solvent. See Fig 12.

4.

Reinstall air cap assembly. Tighten the retaining nut until it is snug, allowing the air cap to turn with resistance.

Make sure that all the surfaces of the stand are free of paint, including the grounding grate. Refer to Fig 6. Clean with a soft cloth dampened in a solvent that’s suitable for use in an electrostatic water-base system.

Fig 12

CLEANING AND MAINTENANCE

Flush the Spray Gun

WARNING

To reduce the risk of electric shock, which could result in serious injury, the ES On-Off lever must be OFF (0) before flushing.

WARNING

To reduce the risk of serious injury and property damage, ONLY use solvents with flashpoints over

140 F (60 C) and with less than 20%, by weight, organic solvent content.

CAUTION

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

1.

Follow the Voltage Discharge Procedure and

Pressure Relief Procedure on page 12.

2.

Connect the fluid line to the solvent supply unit.

4.

Flush the gun with solvent until it is clean.

5.

Follow the Pressure Relief Procedure, then disconnect the fluid line from the solvent supply unit.

6.

Reconnect the fluid line to the paint/fluid supply unit.

7.

Turn on the fluid and air supplies.

8.

Trigger the gun until it is clear of solvent.

SPRAY PATTERN TROUBLESHOOTING CHART

WARNING

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

Before checking, adjusting, cleaning, or servicing any part of the spray system, and whenever entering the safety fence, ALWAYS follow the Pressure Relief Procedure and the Voltage Discharge Procedure on page 12. This will help reduce the risk of serious bodily injury, including splashing in the eyes or on the skin and injury from moving parts or electric shock.

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

PROBLEM:

IMPROPER SPRAY

PATTERN

Fluttering or spitting spray

CAUSE SOLUTION

Streaks

Insufficient fluid supply.

Loose fluid nozzle or damaged fluid nozzle taper seat.

Dirt between fluid nozzle, taper seat and body.

Loose or cracked coupler at fluid inlet.

Loose fluid tube in tank.

Fluid build-up on air cap; partially clogged horn holes. Full air pressure from clean horn hole forces fan pattern toward clogged end.

Damaged fluid nozzle or air cap holes.

Fluid build-up on the perimeter of fluid nozzle orifice, or partially clogged fluid nozzle orifice

Too high fan air pressure.

Fluid too thin.

Not enough fluid pressure

Low air pressure

Fluid too thick

Too much fluid.

Last coat of fluid applied too wet.

Too much air pressure.

Insufficient air pressure.

Non-uniform spray pattern.

Adjust fluid regulator or fill fluid tank.

Tighten or replace fluid nozzle.

See page 24.

Clean. See page 16.

Tighten or repair.

Tighten.

Clean with soft implement or submerge in suitable solvent and wipe clean. See page 16.

Replace damaged part. See page 24.

Remove obstruction. Never use wire or hard instruments. See page 16.

Adjust fan air adjusting valve.

Regulate fluid viscosity.

Increase fluid pressure.

Increase air pressure.

Regulate fluid viscosity.

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

Apply drier finish with multiple strokes.

Use least air pressure necessary.

Increase air pressure.

Clean or replace air cap. See page 16.

NOTE: Some improper patterns are caused by the improper balance between air and fluid.

PROBLEM

Leakage from fluid packing area.

GUN OPERATION TROUBLESHOOTING CHART

Air leakage from front of gun.

Fluid leakage from front of gun.

“Orange Peel” finish.

Excessive spray fog.

No fluid sprays from gun.

Equipment covered with fluid.

Dirty air cap.

CAUSE

Loose packing nut.

Worn needle packings or shaft.

Air valve not seating properly.

Air valve o-ring sticking.

Needle worn or damaged.

Worn fluid seat.

Fluid packing too tight.

Loose resistor stud.

Loose fluid nozzle.

Damaged resistor stud o-ring.

Insufficient air pressure.

Fluid poorly mixed or filtered.

Improper thinner being used.

Too much air pressure.

Fluid thinned too much.

Fluid low.

Damaged air cap.

Dirty or clogged fluid nozzle.

Damaged fluid nozzle.

Exhaust air flow insufficient or not directed properly.

Improper distance between gun and work piece.

Misalignment between air cap and fluid nozzle.

Air Cap

ALIGNED

Fluid Nozzle

MISALIGNED

SOLUTION

Tighten. See page 27.

Replace needle packings or shaft.

See page 27.

Clean, service. See page 29.

Lubricate o-ring. See page 29.

Replace needle. See page 27.

Replace fluid nozzle and/or electrode. See page 25 and 27.

Lubricate and adjust packing nut.

See page 27.

Tighten resistor stud. See page 24.

Tighten fluid nozzle. See page 10.

Replace o-ring. See page 24.

Increase, use least air pressure needed for good results.

Remix or refilter fluid.

Use proper thinner.

Reduce,use least air pressure needed for good results.

Properly thin fluid.

Check, add fluid if necessary.

Replace air cap. See page 24.

Clean fluid nozzle. See page 16.

Check, replace fluid nozzle.

See page 24.

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

Adjust distance to 8 to 12 in.

(203 to 305 mm).

Remove and clean air cap and fluid nozzle. See page 16. Then reinstall them.

Or replace fluid nozzle and air cap.

See page 24.

ELECTRICAL TROUBLESHOOTING CHART

PROBLEM

Low or no electrostatic wrap.

CAUSE

*ES On–Off lever in OFF (0) position.

Improper distance between gun and workpiece.

Parts poorly grounded.

High booth exhaust velocity.

Atomizing air pressure too high.

Fluid pressure too high.

Improper fluid viscosity.

*Turbine alternator not operating

Faulty gun resistance.

Faulty resistor stud resistance.

Fluid leaks from needle packing and causes short.

*Faulty turbine alternator.

Isolation stand voltage control not actuating to isolate fluid supply when gun is triggered or actuated.

Fluid hose breakdown.

Fluid hose shorting to ground.

Conductive air hose used from fluid supply unit to grounded air supply.

Air supply for gun taken from isolated fluid supply using conductive air hose.

Excess moisture in air lines.

Voltage control dump switch closed.

Bleed resistor shorted.

Isolation stand too close to fence.

Voltage control too close to fence.

SOLUTION

Turn lever to ON (1).

Adjust spraying distance to

8–12 in. (203–305 mm).

Clean hangers, check for proper ground on conveyer or track.

Reduce within code limits.

Reduce air pressure.

Reduce fluid pressure.

Check supplier for proper fluid for water-base electrostatic spray.

Check if ES On-Off lever is ON (1).

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

Check gun resistance. See page 22.

Check resistor stud resistance.

See page 23.

Clean needle cavity, tighten or replace packing. See page 27.

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

Check operation of voltage control quick dump switch. Replace if defective.

Replace fluid hose, if damaged.

Support fluid hose away from ground.

Must use non-conductive air hose.

Must use non-conductive air hose.

Use air filter-moisture separator.

Air pressure below 30 psi ( bar).

Adjust the inlet air pressure.

Voltage control seals damaged.

Replace seals. See page 31.

Replace voltage control bleed resistor.

Center isolation stand in safety fence.

See page 6.

Locate voltage control in safety fence as described on page 7.

*ES indicator light not on when gun is triggered.

ELECTRICAL TROUBLESHOOTING CHART

PROBLEM

Arc detected with grounding rod.

CAUSE

Voltage control not connected to isolation stand.

Fluid supply not electrically connected to isolation stand terminal.

Isolation stand making poor electrical contact with fluid container.

Air interlock by-passed.

Dump switch open.

Operator gets mild shock.

Operator gets mild shock when touching workpiece.

Operator not properly grounded or is in contact with ungrounded object.

Gun not properly grounded.

Workpiece not properly grounded.

SOLUTION

Connect voltage control to isolation stand terminal as shown on page 8.

Connect fluid supply to isolation stand terminal as shown on page 8.

Clean grate and/or fluid container.

Check connection between terminal block and fluid supply. See page 8.

NEVER by-pass air line interlock. See page 4.

Voltage control seals damaged.

Replace seals. See page 31.

Be sure floor is properly grounded.

Wear shoes with conductive soles or wear personal grounding straps. Be sure operator is not in contact with or carrying any metallic items which could build up electrical charge. If worn, a glove must be conductive or modified as shown on page 12.

See Check the Electrical Grounding.

Clean workpiece hangers. Check for proper ground on conveyor or track.

SPRAY GUN ELECTRICAL TESTS

The performance of the spray gun is 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.

Use megohmmeter 218–979 (see ACCESSORIES) and an applied voltage of 500 volts to complete these electrical tests. Connect the leads as shown.

WARNING

To reduce the risk of sparking, which could cause fire, explosion, or electric shock and result in serious bodily injury, DO NOT use the megohmmeter in the hazardous area. Remove the gun from the hazardous area before testing it.

KEY

A

C

Megohmmeter

Metal Contact

17 Air Fitting

Test Gun Resistance

Remove the air cap, nozzle, and resistor stud. See Air

Cap/Nozzle/Resistor Stud Replacement. Measure the resistance between the metal contact pin (C) and the gun air inlet fitting (17). See Fig 13.

The resistance should be between 157.5 to 192.5

megohms. If the resistance is outside the specified range, go to the next test. If the resistance is correct, test the resistor stud resistance as shown on page 23.

Test Power Supply Resistance

Remove the power cartridge from the gun handle (7).

See Power Cartridge Replacement .

Remove the turbine alternator (37) from the power cartridge. See Turbine Alternator Removal.

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 14.

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 for other possible causes of poor performance, or contact the nearest authorized service agency.

C

Fig 13

KEY

A Megohmmeter

18 Power Supply

18c Contact Spring

EE Ground Contact Point

18c

Fig 14

18

A

A

17

02250

EE

SPRAY GUN ELECTRICAL TESTS

Test Resistor Stud Resistance

Remove the resistor stud. See Air Cap/Nozzle/Resistor

Stud Replacement. Check the resistance between the black resistor stud contact ring (D) and the needle contact ring (E). Refer to Fig 15. You may have to press down on the contact ring (D) in several places to get a good reading.

The resistance should be 22.5 to 27.5 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 Replacement.

WARNING

The resistor stud contact ring (D) is a conductive contact ring, NOT a sealing o-ring. To reduce the risk of sparking, which could cause fire, explosion, or electrostatic shock and result in serious injury,

DO NOT remove the resistor stud contact ring (D) from the resistor stud or operate the gun without the contact ring in place. DO NOT replace the resistor stud with anything but a genuine Graco part.

KEY

D

E

Resistor Stud Contact Ring

Needle Contact Ring

Fig 15

E

D

Fig 16

0442

SPRAY GUN SERVICE

Gun Disassembly

WARNING

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

1.

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

2.

Follow the Voltage Discharge Procedure and Pressure Relief Procedure, page 12, before servicing the gun or any part of the system.

3.

Do not touch the gun nozzle or come within 4 in. (101.6 mm) of the nozzle during gun operation or for 30 seconds after operation stops to allow the voltage to discharge through the voltage control. It is recommended that the operator hold the gun in hand or hang it in the gun holster during this 30 second period. See

ACCESSORIES to order the gun holster.

WARNING

The contact ring (D) is a conductive, contact ring,

NOT a sealing o-ring. To reduce the risk of sparking, which could cause fire, explosion, or electrostatic shock and result in serious injury, DO NOT remove the contact ring from the resistor stud or operate the gun without the contact ring in place. DO NOT replace the resistor stud with anything but a genuine

Graco part.

To install the resistor stud:

3.

Lubricate the o–ring (25) with petroleum jelly and install it on the resistor stud (22).

4.

Using 8 mm hex key (62), install resistor stud (22) in the fluid nozzle (21). Tighten to 10 in-lb (1.12 N m).

NOTE: Make sure the electrode (20) is tightened properly, as shown in Fig 19, page 25

5.

Trigger the gun while installing the fluid nozzle (21) and resistor stud (22) assembly with the nozzle wrench (70). Tighten until the fluid nozzle seats in the gun barrel.

Service Notes:

Check all possible remedies in the TROUBLESHOOT-

ING CHARTS before disassembling the gun.

If the plastic parts of the gun must be held in a vise,

ONLY use padded vise jaws to avoid damaging parts.

Always remove the gun from the worksite for service or repair. The service or repair area must be clean.

Before servicing the gun, flush it as described under

Flush the Spray Gun in OPERATION.

Disconnecting the Air and Fluid Hoses

Disconnect the air hose fitting and remove the air hose from the gun. Disconnect the fluid hose fitting (111) and nut (112) and remove the fluid hose assembly from the gun. Refer to the PARTS DRAWING on page 33.

6.

Install the air cap assembly (1, 2, 8). Test the gun resistance as instructed on page 22.

KEY

D Contact Ring

1, 8 Air Cap Assembly

2 Retaining Ring

20 Electrode

21 Fluid Nozzle

22 Resistor Stud

25 O-Ring

70 Nozzle

Wrench 20

70

1, 8

2

21

22

D

Air Cap/Nozzle/Resistor Stud Replacement

CAUTION

BE SURE to hold front end of the gun up and trigger the gun while removing nozzle and resistor stud.

This helps drain the gun and prevent any paint or solvent left in the gun from entering air passages.

Fig 17

21

25

1.

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 nozzle wrench (70). Refer to Fig 17.

Torque to

10 in-lbs

(1.12 N m)

22

KEY

21 Fluid Nozzle

22 Resistor Stud

62 8 mm Hex Key

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.

2.

Using the 8 mm hex key (62) supplied, unscrew and remove the resistor stud (22). See Fig 18.

62

0444

Fig 18

SPRAY GUN SERVICE

Electrode Replacement

1.

Remove the air cap, nozzle and resistor stud as described in Air Cap/Nozzle/Resistor Stud

Replacement.

2.

Unscrew and remove the fluid needle/electrode (20) with the electrode tool (64) provided. See Fig 19. If the needle shaft turns, hold the needle shaft assembly by placing a screw driver blade into the slot on the shaft, near the trigger.

CAUTION

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

3.

Apply low-strength (purple) Loctite or equivalent thread sealant to the electrode and needle shaft threads. Refer to SERVICE NOTES, page 34. Install the new electrode finger tight. DO NOT over tighten.

CAUTION

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

4.

Trigger the gun while installing the fluid nozzle and resistor stud assembly. Install the air cap assembly.

Test the gun resistance as instructed on page 22.

KEY

20 Electrode

64 Electrode Tool

KEY

5 Cap Screws

63 Wrench

Fig 20

KEY

3

7

Gun Barrel

Gun Handle

18 Power Cartridge

5

64

20

Apply low-strength

(purple) Loctite or equivalent

18

63

Fig 19

Barrel Removal

1.

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

2.

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

See Fig 21.

Fig 21

CAUTION

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

3

7

SPRAY GUN SERVICE

Barrel Installation

1.

Be sure the gaskets (34 & 18a) and spring (30) are in place. See Fig 22. Replace if damaged.

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 with the wrench (63) supplied.

Tighten the cap screws to 18 in-lbs (2 N m) MAXI-

MUM (about a half turn past snug). DO NOT over tighten.

4.

Assemble the fluid and air hose assemblies back into the gun. Test the gun resistance as instructed on page 22.

KEY

3

5

Gun Barrel

Cap Screws

7 Gun Handle

18 Power Cartridge

18a Gasket

30 Spring

34 Gasket

CAUTION

To avoid damaging the gun, DO

NOT overtighten the cap screws

(5). Tighten the screws to 18 in-lbs

(2 N m) MAXIMUM (about a half turn past snug), using the wrench (63) supplied only.

5

3

34

18

18a

30

7

Fig 22

SPRAY GUN SERVICE

Fluid Packing Removal

1.

Remove the air cap assembly, fluid nozzle and resistor stud, and electrode as described under Elec-

trode Replacement.

2.

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

3.

Use the 9 mm hex nut driver (61) to remove the packing cartridge and needle assembly (28). See Fig 23.

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.

4.

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

Fluid Packing and Needle Repair

The fluid packings and needle can be replaced as individual parts or as assemblies. The overall assembly is preadjusted at the factory.

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 parts are purchased separately, assemble them as instructed below and shown in Fig 24.

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.

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 24 . Generously apply petroleum jelly to the outside of the spacer.

3.

Place the fluid packing (28e), needle packing (28d), and housing (28b) on the fluid needle (28a) as shown in Fig 24.

KEY

4 Trigger Screws

13 Trigger

28 Fluid Packing/Needle Assembly

61 Driver

13

4

28

61

Fig 23

4.

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

5.

Make sure the spring (30) is installed on the nut as shown in Fig 24.

6.

Install the packing and needle assembly into the gun barrel. Using the 9 mm hex nut driver (61), tighten the assembly until just snug, then check the drag on the 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).

9.

Install the electrode, nozzle and resistor stud assembly and the air cap assembly as described under Electrode Replacement.

28c

28a

(Item 30 not included with

Packing/Needle Assy .)

30

KEY

28 Fluid Packing/Needle Assembly

28a Fluid Needle

28b Packing Housing

28c Packing Nut

28d Needle Packing

28e Fluid Packing

28f O-Ring

28g O-Ring

28h Spacer

30 Spring

28d

28b

28e

28g

Fig 24

28h

28f

28

KEY

F 3-wire Connector

7 Gun Handle

18 Power Supply

18a Gasket

18b O-Ring

18c Compression Spring

35 Retainer Ring

37 Alternator

37a O-Ring

37b Cushion

SPRAY GUN SERVICE

18

18d

35

18a

18c

18b

7

F

37a

NOTE: The power cartridge consists of items 18,

35, and 37.

Fig 25

Power Cartridge Replacement

NOTE: The power cartridge consists of the alternator

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

See Fig 25.

1.

Remove the barrel as described in Barrel Removal.

CAUTION

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

2.

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.

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.

3.

Insert the new power cartridge in the gun handle. Be sure the gasket (18a) is in place.

4.

Install the barrel on the handle as described under

Barrel Removal.

37b

37

Turbine Alternator Replacement

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

1.

Remove the power cartridge from the gun handle as described in Power Cartridge Replacement.

2.

Squeeze the two ends of the retaining ring (35) together and carefully pull the alternator (37) away from the power supply until the connector (F) disengages. See Fig 25.

3.

Using an ohmmeter, test the coil in the turbine alternator. 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.

4.

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.

5.

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.

6.

Install the power cartridge in the gun handle as described under Power Cartridge Replacement.

SPRAY GUN SERVICE

Fan Air Adjustment Valve Repair

1.

Place a wrench on the flats of the valve housing and remove it from the handle. See Fig 26.

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

To disassemble the fan valve,

2.

Remove the retaining ring (43b). Rotate the air adjusting screw (43c) counterclockwise until it is disengaged from the valve housing threads (43d). Pull the adjusting screw out of the valve housing.

3.

Clean all the parts and inspect them for wear or damage. If replacing the seal (43a), unscrew it clockwise and remove it from the adjusting screw (43c).

4.

Apply medium grade thread sealant to the small threads on the end of the adjusting screw (43c) and install a new seal (43a) (left hand thread).

5.

When reassembling the fan air valve (43), lubricate the o-rings (43e) and the adjusting screw threads

(43c) with petroleum jelly.

6.

After the retaining ring (43b) is installed on the adjusting screw (43c), back the adjusting screw 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 m).

KEY

43 Fan Air Valve Assy

43a Valve Seal

43b Retaining Ring

43c Adjusting Screw

43d Valve Housing

43e O-Ring

DETAIL

43a

43b

43d

43e

43c

Air Trigger Valve Repair

1.

Using a screwdriver, remove the cap (45), o-ring (23) and spring (44). See Fig 27.

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.

2.

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

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

CAUTION

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

3.

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

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.

4.

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

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

5.

Install the air valve shaft, 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.

6.

Install the cap (45), with the o-ring (23). Tighten the cap with a screw driver. Tighten the air valve packing nut (40) until it bottoms.

KEY

23 O-Ring

39 Air Valve Shaft

40 Packing Nut

41 O-Ring

42 U-Cup

44 Spring

45 Cap 39

44

23

45

41

43

Torque to

10–12 in-lb

(1.1–1.4 N m)

40, 42

U-Cup (42) lips face into handle

Fig 26

Fig 27

SPRAY GUN SERVICE

ES On–Off Valve Repair

1.

Loosen the set screw (24) with the 2 mm hex key (69) provided. Remove the lever (26) from the valve. See

Fig 28.

WARNING

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.

7.

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

WARNING

Always 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.

2.

Use internal snap ring pliers (see ACCESSORIES) 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.

3.

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

(32).

4.

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

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.

5.

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

CAUTION

BE SURE the regulator disk (46) is installed correctly. A missing or incorrectly installed regulator disc can cause severe damage to the turbine alternator.

6.

Install the valve (38) with the regulator disc (46) and o–ring (36) into the gun handle. Install the spacer

(32) on the valve.

KEY

24 Set Screw

26 Lever

32 Spacer

36 O-Ring

38 Valve Body

46 Regulator Disk

47 Retaining Ring

Fig 28

36

47

26

38

46

Bevelled side in toward valve (38)

32

24

VOLTAGE CONTROL SERVICE

Replacing the Voltage Control Rod Seal

1.

Disconnect the cable (117) connected between the dump switch and bleed resistor.

2.

Disconnect the cable (A) connected between the dump switch and isolation stand.

9.

Empty the oil from the oil cup (208) into a clean container. If the oil is clean, it can be reused. If there is a black carbon residue, replace the oil with electrical insulating oil, such as Diala Ax Oil (Shell Oil Company) or an equivalent oil that meets ANSI/ASTM

D3487 and NEMA TR–P8–1975 specifications.

3.

Remove straps (103) from the bleed resistor (102).

10. Remove the electrode (209) from the cylinder rod (B).

4.

Disconnect the ground connection (220) connected to the voltage control base.

11. Remove the seal flange (217) from the oil cup (208).

5.

Remove the four screws (104).

12. Remove the two seals (206). Replace them with two new seals, part no. 110–612. Orientate the seals as shown in Fig 29.

6.

Disconnect the air line from the fitting (110).

7.

Remove the oil cup (208) from the dump switch housing (205).

13. Refill the oil cup (208) and reassemble the voltage control in the reverse order of disassembly. Use a semi-permanent thread sealant to fasten the electrode (209) to the cylinder (B).

8.

Remove the five screws (215) from the top cover.

117

A

102

215

209

Fig 29

DETAIL

208

206

217

To strain relief/ground terminal

103

REF 102

A

205

104

B

A

110

220

CONVERTING PRO 3500SC GUN TO PRO 3500WB GUN

NOTE: See page 41 to order Conversion Kit 223–114. The fluid hose and air hose are not included with this kit. See pages 40 and 42 to order hoses. Use ONLY the electrically conductive air supply hose specified in this manual. A larger fluid nozzle may be required for some water-base paints. See Manual 307–803 for available fluid nozzles.

KEY

A Fluid Seal

B Fluid Tube Fitting

C Gun Fitting Bracket

D Air Fitting

E Exhaust Tube

F Exhaust Tube Clamp

G Retaining Nut

H Nozzle/Resistor

Stud Assembly

P

H

G

J Needle/Electrode

K Fluid Needle Assembly

L Trigger Screws

M Trigger

P Air Cap

Q Ferrules

R Nut

CAUTION

BE SURE to hold the front end of the gun up while removing the nozzle and resistor stud to prevent any paint or solvent left in the gun from entering the air passages.

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.

6.

Unscrew and remove the fluid needle/electrode (J) with the electrode tool supplied with the gun. If the needle shaft turns, hold the needle shaft assembly by placing a screw driver blade into the slot on the shaft, near the trigger.

L

CAUTION

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

C D

J

K

A

B

M

R

Q

E

F

Fig 30

PRO 3500SC Gun Disassembly

1.

Remove the fluid tube fitting (B) and fluid seal (A) from the gun. See Fig 30.

2.

Remove the air fitting (D), exhaust tube clamp (F), and the exhaust tube (E). Keep these parts and the nut (R) and ferrules (Q) for reassembly .

3.

Remove the gun fitting bracket (C) with the hose assembly.

4.

Remove the retaining nut (G).

NOTE: Keep all the following parts for reassembly .

5.

Remove the air cap (P). Point the front end of the gun up and squeeze the trigger while removing the fluid nozzle/resistor stud assembly (H).

7.

Loosen the trigger screws (L) far enough to remove the trigger (M).

8.

Remove the packing cartridge and needle assembly

(K) with the 9 mm hex nut driver supplied with the gun.

Installing the Fluid Needle Assembly

1.

Before installing the new fluid needle assembly (28*) into the gun barrel, make sure the internal surfaces of the barrel are clean. Remove any residue with a soft brush or cloth.

2.

Lubricate the o-ring on the outside of the fluid needle packing housing.

3.

Install the fluid needle assembly (28) into the gun barrel. See Fig 7. Using the 9 mm hex nut driver, tighten the assembly until just snug, then check the drag on the needle. (Make sure the spring is installed on the fluid needle nut.)

4.

Install the trigger (L) and tighten the trigger screws (K).

5.

Install the electrode (20) finger tight. DO NOT over tighten.

CAUTION

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

CONVERTING PRO 3500SC GUN TO PRO 3500WB GUN

H

KEY

H Nozzle/Resistor

Stud Assembly

20 Needle/Electrode

L Trigger Screws

M Trigger

N Fluid Hose Assembly

(not included with kit)

P Air Cap

8* Retaining Nut

28* Fluid Needle Assembly

71* Warning Sign (not shown)

*Parts included with Conversion Kit 223–1 14.

8*

P

L

M

28*

J

N

Fig 31

6.

Trigger the gun while installing the fluid nozzle and resistor stud (H) assembly. Tighten until the fluid nozzle seats in the gun barrel.

7.

Install the air cap (P). Screw on the retaining nut (8*) finger tight.

8.

Mount the warning sign (71*) in the spray area where it can easily be seen and read by all operators.

9.

Follow the additional warnings, installation, operation, service, and other instructions given in this manual for a water-base system. Order replacement parts for the gun from the parts list on page 37.

NOTE: BE SURE to test the gun resistance as instructed on page 22.

WARNING

To help avoid electric shock, which could cause serious injury, ONLY use the air hoses listed in the

ACCESSORIES section.

SPRAY GUN SERVICE NOTES

Do not overtighten Packing Cartridge into gun barrel

Loosen slightly if Packing Rod jams

Lubricate

O-Rings

Resistor Stud

Tighten into nozzle

[10 in-lb (1.12 N m)]

Nozzle

Set Packing for

2 lb drag on shaft

Apply low strength (purple) Loctite or equivalent to threads

Air Cap

WARNING: DO

NOT remove contact ring

Lubricate

Alternator

CAUTION: To avoid damaging gun, DO NOT overtighten screws. Tighten to

18 in-lbs (2 N m) MAXI-

MUM (about half turn past snug), using wrench (63) provided.

Capscrews

Adhesive side

Will remain in gun when hose removed

Tighten until gap between Hex and Gun

Barrel is 1 to 2 mm

Thread to shoulder

Apply high strength

(green) Loctite to thread. Assemble flush with end of screw.

Install over

Valve Rod

Lubricate

Lubricate

Fan Air Valve

& Nozzle Wrench

Power Supply

Fan Air Valve

Apply PTFE paste

Lubricate

Lubricate

Align Retaining Ring holes with flat on

Spacer to ease assembly/disassembly

Install Flow Regulator with concave side toward Valve (lettering should be visible when assembled)

Push Muffler in by installing Exhaust Adapter

Press Exhaust Tube onto Barb

Left hand thread

Apply high strength Loctite

Torque to 35 to 45 in-lbs

(4 to 5.1 N m)

Left hand thread

Hose Ferrule

Torque to

80 in-lbs

(9.1 N m)

NOTES

DETAIL A

28g*

28b

28d*

28e*

28h*

28c

28f*

SPRAY GUN PARTS DRAWING

22

21

25*

See Detail A

20

28a

28 Includes 28a–28h

Includes

37a & 37b

37

2

1

18d

8

18e

18a**

18c

18b**

35

37b

34**

18f

3

5

4

31

**37a

19**

Includes

43a–43e

43

43d

43e**

43c

43a

43b

18 Includes 18a–18f

44

23**

39

45

24

49

51

50

13

6

46

38

36

32

47

26

41**

30

40

42**

Air Seal Repair Kit 223–021

Must be ordered separately.

Includes:

Ref No.

18a

18b

19

23

34

37a

Qty

1

1

2

1

1

1

Fluid Seal Repair Kit 223–020

Must be ordered separately.

Includes:

Ref No.

25

28d

28e

Qty

1

1

1

7

41

42

43e

1

1

2

28f

28g

28h

1

1

1

66

15

19

33

17

67

SPRAY GUN PARTS LIST

Part No. 222–700

Electrostatic Air Spray Gun

4

5

2

3

6

7

8

11

REF

NO.

PART NO.

1 177–033

15

17

18

28a 223–024

28b 185–495

28c 185–488

28d* 178–763

28e* 178–409

28f* 111–504

28g* 111–316

28h* 186–069

30

31

185–111

185–079

32

33

185–119

185–112

34** 185–113

176–930

222–314

185–095

185–096

185–097

222–666

223–653

179–791

222–670

185–122

185–105

222–333

18a** 185–134

18b** 106–555

18c 178–504

18d 185–141

18e 185–099

18f 185–145

19** 106–555

20

21

186–615

185–158

22 223–977

23** 110–099

24 110–083

25* 111–507

26 186–839

27

28 223–444

DESCRIPTION QTY

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

RING, retaining

BARREL, gun

SCREW, trigger

SCREW, cap, relieved; M5 x 0.8

HOOK

HANDLE, gun

RETAINER, air cap

TAG, warning (not shown)

TRIGGER, 2 finger

MUFFLER

FITTING, air

POWER CARTRIDGE

Includes items 18a–18f

GASKET, power supply

O–RING, Viton

SPRING, compression

CUSHION, power supply

PAD

PAD

O–RING; Viton

NEEDLE, electrode

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

STUD, resistor

1

1

O–RING,PTFE 1

SET SCREW, lever; sch; M4 x 0.7

1

O–RING; fluoroelastomer 1

1

2

1

1

1

1

1

1

1

1

1

LEVER, ES valve

PLATE, identification

FLUID PACKING & NEEDLE ASSY

Includes items 28a–28h

NEEDLE, fluid

HOUSING, packing

NUT, packing

PACKING, needle

PACKING, fluid

O–RING, fluoroelastomer

1

1

1

1

1

1

1

1

1

1

1

O–RING, fluoroelastomer

SPACER

SPRING, compression

PLUG

SPACER, lever

ADAPTER, exhaust hose

GASKET, manifold; polyethylene

3

1

1

1

1

1

2

1

1

1

1

1

1

1

HOW TO ORDER REPLACEMENT PARTS

1. To be sure you receive the correct replacement parts, kits or accessories, always give all of the information requested in the chart below.

2. Check the parts list to identify the correct part number; do not use the ref. no. when ordering.

3. Order all parts from your nearest Graco distributor.

6 digit

Part

Number Qty Part Description

63

64

65

66

67

68

69

43a 181–383

43b 105–681

43c 185–089

43d 185–090

47

49

50

51

43e** 103–557

44 185–116

45

46

188–486

107–107

61

62

110–082

223–334

189–020

112–305

110–087

110–088

107–460

185–123

105–749

185–103

110–231

110–089

110–086

70

71

187–421

186–118

REF

NO.

PART NO.

35

36

37

185–114

110–084

222–319

37a** 110–073

37b 185–124

38

39

40

43

72

185–118

222–320

185–115

41** 111–508

42** 105–452

222–321

180–209

DESCRIPTION QTY

RING, retainer, alternator

O–RING, Kalrez or Chemraz

ALTERNATOR, turbine

Includes items 37a & 37b

O–RING, Viton

CUSHION

VALVE, electrostatic

SHAFT ASSY., air valve

NUT, packing

O–RING, trigger valve;

1 fluoroelastomer 1

U–CUP,PTFE 1

VALVE ASSY, fan air

Includes items 43a–43e

SEAL, valve

RING, retaining

SCREW, adjusting

HOUSING, valve

1

1

1

1

1

1

1

1

1

1

1

1

O–RING, Viton

SPRING, compression, air valve

CAP, air valve

REGULATOR, disc

RING, retaining

SCREW, fluid adjustment

NUT, fluid adjustment

SPRING

DRIVER, hex nut; 9 mm (not shown) 1

WRENCH, allen; 8 mm (not shown) 1

WRENCH, barrel (not shown)

WRENCH, electrode (not shown)

1

1

BRUSH, cleaning (not shown)

TUBE, exhaust; polyurethane

1

1

CLAMP, exhaust tube

WRAP, spiral

1

5

WRENCH, allen, hex key;

2 mm (not shown)

WRENCH, nozzle (not shown)

SIGN, warning, English (not shown)

See Accessories for additional signs,

1

1

1

1

1

1

2

1

1

1 available at no charge

COVER, gun (not shown)

1

1

*Included in Fluid Seal Repair Kit 223–020.

**Included in Air Seal Repair Kit 223–021

See Accessories for Optional Air Restrictor Valve 222–322.

WARNING

When servicing use only genuine Graco replacement parts. Use of other parts or any modification of the gun could alter the grounding continuity of the gun or cause parts to rupture and result in serious injury, fire, explosion or property damage.

105

117

213

VOLTAGE CONTROL PARTS DRAWING

106

215

225

211

212

214

209

210

208

204

203

218

102

206

217

216

222

223

224

REF 102

205

103

111

REF 220

221

112

116

108

133

220

106

127

A

108

133

104

A

107

108

109

110

VOLTAGE CONTROL PARTS LIST

Part No. 223–477

Water-base Voltage Control Assembly

REF

NO.

PART NO. DESCRIPTION QTY

G* 223–640 AIR MANIFOLD ASSEMBLY

L 223–639 WATER-BASE VOLTAGE

CONTROL

See separate Parts List, below

1

1

N* 208–591 HOSE, air, fluid supply unit;

6 ft. (1.83 m); 3/8 npsm(f) swivel; non-conductive

R* 223–446 HOSE, air, voltage control; 10 ft.

1

(3.05 m); 1/4-18 npsm x 1/4-18 npt 1

S* 223–447 HOSE, air, air line interlock; 5 ft.

(1.53 m); 3/8–18 npsm x

3/8–18 nptf

T* 186–119 SIGN, warning

(for safety fence gate)

U* 210–084 ROD, grounding

V* 110–790 U-BOLT & PLATE

W* 223–685 CABLE ASSEMBLY, 1 ft. (0.3 m);

1

1

1

2

(strain relief/ground to safety fence) 1

X* 223–547 CABLE ASSEMBLY, 25 ft. (7.6 m);

(strain relief/ground to true earth ground) 1

*These parts are not shown in the Parts Drawing.

See pages 4 and 8 for illustration of these parts.

Ref Letter L, Part No. 223–639

Water-base Voltage Control

REF

NO.

PART NO. DESCRIPTION QTY

101 223–141 WATER-BASE SWITCH

See separate Parts List, at right

102 223–318 BLEED RESISTOR

103 186–081 STRAP, resistor

104 103–374 SCREW, mach., pnh;

10–32 UNF-2A x 5/8 in.

105 104–336 NUT, crown; 10–32 UNF-2B

106 100–029 NUT, hex cap; 1/4 x 20 UNC

107 223–428 PLATE, base

108 103–832 SCREW, mach., pnh;

109

110

186–057

110–737

10–32 UNF-2B x 1/4 in.

BRACKET, fitting

FITTING, air

111 110–745 BUSHING, strap

112 110–620 SCREW, nylon;

10–24 UNC-2A x 1/2 in.

116 223–609 CABLE ASSEMBLY, 3 in. (76.2 mm)

4

1

4

5

1

2

1

4

2

(bleed resistor to plate)

117 223–528 CABLE ASSEMBLY, 4 in. (102 mm);

1

(switch to bleed resistor) 1

127 223–548 CABLE ASSEMBLY, 6.5 ft. (1.98 m);

(base plate to strain relief/ground) 1

133 100–718 WASHER 3

1

1

2

Ref No. 101, Part No. 223–141

Water-base Switch

REF

NO.

PART NO. DESCRIPTION QTY

203 110–609 TUBING, nylon 1

204 110–610 FITTING, tube elbow; 1/8-27 npt 1

205 185–575 HOUSING, cylinder

206 110–612 SEAL, rod

1

2

208 185–584 CUP, oil

209 185–573 CONTACT, cylinder

210 103–209 O-RING; Viton

211 185–576 PLATE, cover

212 103–337 O-RING; Viton

213 102–025 NUT, hex; 1/4-20

1

2

1

1

1

1

1

214 185–574 CONTACT, cover

215 110–620 SCREW, pan hd. mach.;

10–24 UNC-2A x 1/2 in.

216 100–903 SCREW, pan hd. mach;

5

217

218

220

185–583

110–608

223–324

8–32 UNC-2A x 1/2 in.

FLANGE, cylinder

CYLINDER, air piston

WIRE, ground; 12 in. (305 mm)

221 103–832 SCREW, pan hd. mach.;

10–32 UNF-2A x 1/2 in.

222 100–166 NUT, hex; 10-32 UNF-2B

223 185–915 STRAP, ground

224 100–718 WASHER, lock

225 110–629 CLAMP, cable

1

1

2

1

1

1

1

1

1

HOW TO ORDER REPLACEMENT PARTS

1. To be sure you receive the correct replacement parts, kits or accessories, always give all of the information requested in the chart below.

2. Check the parts list to identify the correct part number; do not use the ref. no. when ordering.

3. Order all parts from your nearest Graco distributor.

6 digit

Part

Number Qty Part Description

FLUID HOSE ASSEMBLY PARTS DRAWING

304

311

308

307

REF 306

301

317

303

312

316

REF 306

310

315

302

305

306

313

314

307

308

309

310

REF 306

FLUID HOSE ASSEMBLY PARTS LIST

Fluid Hose Assemblies

100 psi (7 bar) MAXIMUM WORKING PRESSURE

0.25 in. (6.35 mm) ID; 3/8–18 nptf; PTFE

Fluid Hose

Assy. Part No.

223–192

223–193

223–194

Hose Length

25 ft (7.6 m)

36 ft. (11 m)

50 ft (15.3 m)

REF

NO.

PART NO. DESCRIPTION

301 186–052 INSERT, barbed

302 180–553 FITTING, male

303 107–305 O-RING; Viton

304 110–736 O-RING; Viton

305 107–208 NUT, ferrule

185–918 HOSE, fluid; 25 ft (7.6 m)

Part No. 223–192 ONL Y

306 185–919 HOSE, fluid; 36 ft (1 m)

Part No. 223–193 ONL Y

185–920 HOSE, fluid; 50 ft (15.3 m)

Part No. 223–194 ONL Y

QTY

1

1

1

1

1

1

1

1

HOW TO ORDER REPLACEMENT PARTS

1. To be sure you receive the correct replacement parts, kits or accessories, always give all of the information requested in the chart below.

2. Check the parts list to identify the correct part number; do not use the ref. no. when ordering.

3. Order all parts from your nearest Graco distributor.

6 digit

Part

Number Qty Part Description

REF

NO.

PART NO. DESCRIPTION QTY

307 185–549 FERRULE, hose

308 185–547 HOUSING, ferrule

309 185–566 BRACKET, fitting

310 185–548 NUT; 5/8–24 UNEF-2B

311 185–972 PLATE, fitting

312 185–971 PLATE, fitting

313 100–021 SCREW, hex; 1/4-20 UNC-2A x 1” 5

314 102–025 NUT, hex; 1/4-20 6

1

1

1

2

2

2

315 154–636 WASHER

316 107–048 CONNECTOR; 3/8-18 npt(f)

317 103–337 O-RING; Viton

1

1

1

ISOLATION STAND PARTS DRAWING AND LIST

Part No. 223–445

Isolation Stand Assembly

For 15 gallon (57 liter) fluid container

403,407

409

REF

NO.

PART NO. DESCRIPTION QTY

401 185–468 STAND, bare

402 185–946 GRATE. grounding

403 110–629

404 110–757

CLAMP, cable

U-BOLT, clip

405 223–539 CABLE ASSEMBLY, 36” (914 mm)

(from terminal block to fluid supply unit)

406 223–529 CABLE ASSEMBLY, 12” (305 mm)

1

(from terminal block to voltage control) 1

1

1

1

1

407 105–967 SCREW, thread forming, pnh;

10–16 x 0.5 in.

409 100–077 NUT, hex; 5/16–18

1

2

404

405

401

406

402

GUN CONVERSION KIT PARTS DRAWING AND LIST

Part No. 223–114

Gun Conversion Kit

28

20

8

REF

NO.

PART NO. DESCRIPTION QTY

8

20

28

71

223–653 NUT, air cap retaining

186–615 ELECTRODE

223–444 ROD, packing assembly

186–118 SIGN, warning (not shown)

The Kit Ref Nos. correspond with the Gun Ref Nos. on page 37.

1

1

1

1

Manual Change Summary

The following parts have been changed in this revison.

Assembly

Changed

222–700

Spray Gun

Air Line Accessories

Part

Status

Old

New

Old

New

Ref

No.

45

45

–

–

Part No.

Name

185–117

188–486

110–805

112–534

Cap, air valve

Cap, air valve

Disconnect

Disconnect/

Swivel

Other changes were made on the following pages.

Page 28: A NOTE was added under Turbine Alternator

Replacement to replace turbine bearings after 2,000 hours of operation.

Page 44: Under WARRANTY, the barrel, handle, trigger, and hook were added as parts that will be repaired or replaced for thirty-six months or six thousand hours of operation from time of sale.

ACCESSORIES

Accessories must be purchased separately.

Use only GENUINE GRACO PARTS AND ACCESSORIES.

WARNING

NEVER operate your equipment at a working pressure rating that is higher than the lowest rated component in your system. Lower rated components may not be able to withstand the pressure developed by the pump and may rupture, causing serious bodily injury or property damage.

The accessories in this box are approved by Factory Mutual

GUN FLUID HOSE ASSEMBLIES

See page 40 to order.

STAINLESS STEEL PRESSURE TANKS

100 psi (7 bar) MAXIMUM WORKING PRESSURE

Models with

Agitator

Models without

Agitator

SAFETY WARNING SIGN

Available at no charge from Graco.

Must be ordered separately.

186–118 Warning Sign, for spray area

186–119 Warning Sign, for safety fence gate

ISOLATION STAND 727–212

For 55 gallon (209 liter) fluid container.

Size

5 gallon

(19 liter)

10 gallon

(38 liter)

15 gallon

(57 liter)

222–179

222–180

222–181

222–183

222–184

222–185

SAFETY FENCE 110–614

To isolate personnel from high voltage equipment.

6 ft.

(1.83 m)

6 ft.

(1.83 m)

6 ft.

(1.83 m)

The accessories below and on page 43 have not been tested by Factory Mutual.

AIR LINE ACCESSORIES

GROUNDED GUN AIR SUPPLY HOSE

100 psi (7 bar) MAXIMUM WORKING PRESSURE

0.315 in. (8 mm) ID; 1/4 npsm(f) x 1/4 npsm(f) LH

Color coded red; Stainless steel braid ground path

(Meets CENELEC EN 50 050 requirement for metallic ground path.)

235–070 25 ft (8 m)

235–071 36 ft (11 m)

235–072 50 ft (15 m)

GUN AIR LINE

QUICK DISCONNECT/SWIVEL 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.

AIR SHUTOFF VALVE 224–754

500 psi (35 bar) MAXIMUM WORKING PRESSURE

For turning air to gun off or on.

1/4 npsm(m) LH x 1/4 npsm(f) LH

ACCESSORIES

Accessories must be purchased separately.

Use only GENUINE GRACO PARTS AND ACCESSORIES.

AIR ADAPTER NIPPLE 185–493

For connecting two or more grounded gun air supply hoses. 1/4 npt x 1/4 npsm LH

GUN COVER 180–209

Order Part No. 218–374 for package of 10.

HIGH VOLUME AIR REGULATOR 206–199

0–125 psi (0–9 bar) Regulated Pressure

200 psi (14 bar) Steel Pressure Gauge

1/2 npt(f) inlet and outlet

ES ON/OFF CONVERSION KIT 223–976

Converts the ES ON/OFF Valve to a constant on setting.

A ball valve is included for complete air shut-off at gun.

PUSH-PULL PATTERN ADJUSTMENT

VALVE 224–883

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

AIR FILTER/MOISTURE SEPARATOR 106–148

250 psi (17.5 bar) MAXIMUM WORKING PRESSURE

For cleaning and drying air in air spray system. 20 micron element, 5 oz. bowl capacity, 3/8 npt(f) inlet and outlet

BLEED-TYPE MASTER AIR VALVE 107–141

300 psi (21 bar) MAXIMUM WORKING PRESSURE

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

FILTER (AIR OR PAINT) 202–271

750 psi (52 bar) MAXIMUM WORKING PRESSURE

With 60 mesh (250 micron) element,

3/8 npt(f) inlet, 3/8 npt(m) outlet

FLUID DRAIN VALVE

500 psi (35 bar) MAXIMUM WORKING PRESSURE

For relieving fluid line pressure

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

PTFE; for non-corrosive fluids

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

PTFE; for corrosive fluids

FLUID NEEDLE ASSEMBLY 223–444

Includes items 1 to 8

3

4

1

2

5

6

7

8

7

2

223–024

185–495

185–488

178–763

178–409

110–072

110–071

186–069

4

5

8

.NEEDLE, fluid

.HOUSING, packing

.NUT, packing

.PACKING, needle

.PACKING, fluid

.O–RING, Kalrez or Chemraz

.O–RING, Kalrez or Chemraz

.SPACER, packing

1

3

6

1

1

1

1

1

1

1

1

MISCELLANEOUS ACCESSORIES

GUN HOLSTER 236–090

Mount the gun holster to the side of the spray booth.

Hang gun in holster for voltage to discharge.

AIR CAP AIR CONTROL VALVE 222–322

Allows air cap air to be restricted without losing alternator power.

SNAP RING PLIERS 110–090

For removing the ES ON-OFF Valve Retaining Ring (item

47 in Parts List).

MEGOHMMETER 218–979

500 Volt output; 0.01–2000 megohms.

Not for use in Hazardous areas.

GROUNDING CLAMP AND WIRE 222–011

12 ga, 25 ft (7.6 m) wire

SPRAY GUN TECHNICAL DATA

Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.87 lb (0.85 Kg)

Gun Length . . . . . . . . . . . . . . . . . . . . . . . 9.5 in. (240 mm)

Maximum Working Pressure . . . . . . . . . .

Air Pressure Operating Range:

100 psi (7 bar)

0–100 psi (0–7 bar)

Fluid Pressure Operating Range: . 0–100 psi (0–7 bar)

Voltage Output . . . . . . . . . . . . . . . . . . . . . . . . . . . 0–65 KV

Air Inlet . . . . . . . . . . . . . . . . . . . . . . . . .

Fluid Inlet

1/4 npsm(m) L.H.

. . . . . . . . . . . . . . . . . . . . . . . . . . . 3/8 npsm(m)

Fluid Specifications: Use only with fluids having flashpoints above 140 F (60 C) and a maximum 20%, by weight, organic solvent concentration

Wetted Parts . . . . . . Stainless Steel, Brass, Nylon,

Acetal, PTFE, Fluoroelastomer,

Ultra High Molecular Weight Polyethylene, Ceramic

Viton and Kalrez are registered trademarks of the DuPont Co.

Loctite is a registered trademark of the Loctite

Corporation.

Chemraz is a registered trademark of the Green,

Tweed and Company.

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 thirty-six 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.

Sales Offices: Atlanta, Chicago, Dallas, Detroit, Los Angeles, Mt. Arlington (N.J.)

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

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

PRINTED IN U.S.A. 307–978 12/89 Revised 3/94

3X7–978

Rev. P

Supersedes Rev. L and PCN Rev. M and N

Parts Change Notice

Some parts in Rev. L of manual 307–978 have changed but have not yet been changed in the instruction manual. Please note the changes below and mark them in your manual or keep this sheet with your manual.

Use the following information in place of the front cover system description:

ELECTROSTATIC AIR SPRAY

PRO 3500wb Waterbase System

For use when electrostatically spraying conductive, waterbase fluids that have a flash point above 140 F (60 C) and a maximum 20%, by weight, organic solvent concentration.

For Applications with a 15 Gallons (57 Liters) or Less Fluid Supply

Waterbase Systems

These systems include a PRO 3500WB electrostatic spray gun, fluid hose, air hose, voltage control switch, isolation stand, gun holster, and isolation fence.

Waterbase Conversion Systems

For converting an existing PRO 3500SC system to a PRO

3500WB system. These systems include a spray gun conversion kit, fluid hose, air hose, voltage control switch, isolation stand, gun holster, and isolation fence.

Part No. Hose Length

236–909 25 feet (7.6 meters)

236–910 36 feet (11 meters)

236–911 50 feet (15.3 meters)

Part No. Hose Length

236–912 25 feet (7.6 meters)

236–913 36 feet (11 meters)

236–914 50 feet (15.3 meters)

For Applications with a 55 Gallons (209 Liters) Fluid Supply

The fluid hose, air hose, voltage control switch, isolation stand, gun holster, and isolation fence must be ordered separately for these applications.

NOTE: See the Parts Drawings and Lists and Accessories sections for a complete list of part numbers, or contact your authorized Graco representative.

January 27, 1995

Refer to this drawing in place of the typical installation drawing on page 4:

F*

To Gun

P* Q* N*

To Gun

C*

B H* E T

A*

WARNING

J*

X*

S*

V*

W*

M

R K*

Y*

U*

L*

03585

G

*Equipment that must be installed for safe operation of a water-base system

On page 22:

Test Gun Resistance

Change the procedure to the following:

Measure the resistance between the electrode (20) and the gun air fitting (17). See Fig. 13. 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, test the resistor stud resistance as shown on page 23.

On page 23:

Test Resistor Stud Resistance

The resistance should be 21 to 29 megohms instead of

22.5 to 27.5 megohms.

KEY

A Megohmmeter

17 Air Fitting

20 Electrode

A

20

Fig 13

2

17

Use this chart in place of the chart on page 5:

KEY TO TYPICAL INSTALLATION DRAWING

Ref Letter

A*

B

C*

L*

M

N*

P*

G

H*

J*

K*

V*

W*

X*

Y*

R

S*

T

U*

D

E

F*

Q*

Part No.

–

206–199

235–070 (25’)

235–071 (36’)

235–072 (50’)

Description

Grounded Main Air Supply Line

Gun Air Pressure Regulator

Gun Grounded Air Supply Hose

Assembly Included With

–

–

See front cover

222–700

–

185–918 (25’)

185–919 (36’)

185–920 (50’)

Water-base Electrostatic Spray Gun

Fluid Supply Air Pressure Regulator

Gun Insulated Fluid Supply Hose

See front cover

SST Pressure Tanks

223–192 (25’)

223–193 (36’)

223–194 (50’)

223–640

Part of 223–447 (item S) Safety Fence Air Line Interlock

110–614

223–445 or 727–212

223–639

–

208–591

185–972 & 185–971

–

Air Manifold Assembly

Safety Fence

Isolation Stand

223–477

223–477

See front cover

See front cover

223–477 Voltage Control

Fluid Supply Unit

Fluid Supply Unit Non-conductive Air Supply Hose 223–477

Strain Relief/Ground Terminal 223–192 (25’)

223–193 (36’)

223–194 (50’)

Gun Air Hose Ground Wire 235–070 (25’)

235–071 (36’)

235–072 (50’)

–

223–446

223–447

186–119

210–084

110–790

223–685

223–547

223–548

Voltage Control Non-conductive Air Hose

Safety Fence Interlock Air Hose

Safety Fence Warning Sign

Grounding Rod

U-Bolts and Plate

Fence Ground Wire

Main Ground Wire

Voltage Control Ground Wire

223–477

223–477

223–477

223–477

223–477

223–477

223–477

223–639

See Page

–

43

42

37

42

40

42

39

–

42

41 or 42

39

42

39

40

39

39

39

39

39

39

39

39

3

Refer to this drawing in place of the drawing on page 13:

Safety

Fence

Grounding

Rod

Cable

C-clamp

Voltage

Control

Fluid

Supply

Fig. 10

On page 40:

Change the part number for Ref. No. 316 from 107–048 to 112–480.

On page 39:

Change the quantity for Ref. No. 213 from 2 to 1; the hex nut has been replaced by a star washer, part number 100–985.

Use the following pressure tank part numbers in place of those listed on page 42:

Stainless Steel Pressure Tanks

100 psi (7 bar) Maximum Working Pressure

Models with

Agitator

Models without

Agitator Size

5 gallon

(19 liter)

10 gallon

(38 liter)

15 gallon

(57 liter)

236–149

236–150

235–151

236–152

236–153

236–154

03570

4