Graco 224-094, 235-894, 235893, 308-084, 4600SC User Manual

NSTRUCTIONS–PARTS

This

manual contains IMPORT

ARNINGS AND INSTRUCTIONS

READ AND RET

AIN FOR REFERENCE

ANT

LIST

308–084

Rev. H

Supersedes

Model

PRO 4600SC



AUTOMATIC ELECTROSTATIC

AIR SPRA

100

psi (7 bar) MAXIMUM WORKING PRESSURE

U.S.

Patent No. 4,290,091; 4,219,865; 4,497,447; 4,462,061; 4,660,774; 5,063,350; 5,073,709; 5,080,289; 5,093,625 Patented 1986, 1987 Canada Brevete 1986, 1987 U.K. Patent No. 2,147,158; 2,142,559B; 2,140,327B; 2,245,197B French Patent No. 91 14488 Other Foreign Patents Pending

Part No. 224–224, Series A Air Spray Gun, without shroud

(0.059 in. (1.5 mm) spray nozzle)

Part No. 235–893, Series A Air Spray Gun, with standard shroud

Y GUN

0432

Part No. 235–894, Series A Air Spray Gun, with slotted shroud

For

use when the gun is mounted in

the front position; see Fig 3 , page 6

Part No. 224–094 Series A Gun Manifold

Must

order separately

For use with Class



, Group D paint spray materials

0435

Part

No. 235–893 shown

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

 COPYRIGHT

1991 GRACO INC.

WARNINGS

SERIOUS BODILY INJUR Y, EXPLOSION, FIRE, OR ELECTROST ATIC SHOCK CAN OCCUR IF THE PRECAUTIONS BELOW ARE NOT FOLLOWED.

READ AND UNDERSTAND ALL INSTRUCTION MANUALS, T AGS, AND WARNING LABELS BEFORE OPERATING EQUIPMENT.

ELECTROSTATIC EQUIPMENT SHALL ONLY BE USED BY TRAINED, QUALIFIED PERSONNEL WHO SHALL BE FULL Y CONVERSANT WITH THE REQUIREMENTS STATED WITHIN THIS INSTRUCTION MANUAL.

EQUIPMENT MISUSE HAZARD

General

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 or

NEVER

ALWAYS cleaning or removing the fluid nozzle or servicing any system equipment.

NEVER

NEVER alter or modify any part of this equipment; doing so could

CHECK all spray equipment regularly and repair or replace worn

System

This psi gun

HAZARDOUS

Improper handling of hazardous fluids or inhaling vapors can cause extremely serious bodily injury , even death, due to splashing in the eyes, ingestion, inhalation, or bodily contamination. Be sure you know what fluid you are pumping and its specific hazards. Observe all precautions when handling known to,

2. Dispose

Safety

to rupture and result in serious bodily injury

property damage.

point the spray gun at anyone or at any part of the body

put hand or fingers over the spray nozzle.

follow the

try to stop or deflect leaks with your hand or body

cause it to malfunction.

or damaged parts immediately

Pressure Relief Procedure

, fire, explosion

, at right, before

Pressure

gun has a maximum working air and fluid pressure of 100

(7 bar). Never exceed the maximum working pressure of the

or any other component or

accessory used in the system.

FLUID HAZARD

or potentially hazardous fluids, including, but not limited

the following precautions.

Store hazardous fluids in approved containers.

Federal wastes.

of any waste fluid according to all Local, State and

regulations pertaining to the disposal of hazardous

Fluid

Compatibility

BE SURE all fluids and solvents used are chemically compatible with Always erature

Pressure

To the shock, tem, when checking or when installing, cleaning or changing fluid nozzles, and when ever

1. Turn

2. Turn

3. Trigger the gun into a

4. Open

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

5. Provide proper ventilation in accordance with accepted

the “Wetted Parts” shown in the TECHNICAL DATA. read and follow the before using the fluid or solvent in this gun.

fluid and solvent manufacturer’s lit

Relief Procedure

reduce the risk of serious bodily injury

eyes or on the

always follow this procedure

you stop spraying.

air.

If the air pilot fluid regulator is

at the regulator air inlet to relieve pressure in the fluid line.

relieve

the pump drain valve, having a waste container ready

catch the drainage.

spray

again.

Read and follow the fluid and solvent ture

regarding the use of protective clothing and

such as eye

Provide for the safe piping and disposal of all exhaust air

industry

Ventilate

skin, injury from moving parts or electrostatic

servicing any part of the spray system,

f all the air to the control module

f the fluid supply to the gun.

fluid pressure.

protection, respiratory protection, and gloves.

standards and governmental regulations. Refer to

the Spray Booth

grounded

, on page 6.

, including splashing

when shutting of

except the manifold

used, air pressure is need

metal waste container to

manufacturer’s litera

f the sys

equipment,

HOSE SAFETY

TIGHTEN

NEVER tire movement of the hose couplings. If any of these conditions exist,

 

all fluid connections securely before each use.

use a damaged hose. Before each use, check the en

hose for cuts,

replace the hose immediately

leaks, abrasion, bulging cover

, or damage or

HANDLE AND ROUTE HOSES CAREFULLY. Do not pull on hoses

to move equipment. Do not use fluids or solvents which

are

not compatible with the inner tube and cover of the hose.

FIRE, EXPLOSION, OR ELECTROSTA

TIC SHOCK HAZARD

To reduce the risk of fire, explosion, or electrostatic shock, which

may result from electrical discharge, it is essential that:

All parts of the electrostatic system are properly grounded.

S All personnel in or close to the spray area are properly

grounded.

S All

electrically conductive objects or devices in the spray area, including grounded.

When operating the electrostatic device, any ungrounded objects in the spray area (such as people, containers, tools, etc.) objects cient energy levels can ignite the fluid being sprayed, fumes from This sult

Static electricity can also be generated by the flow of fluid through the pump, hose, gun, and nozzle, but it is dissipated through

you experience any arcing or feel even a slight shock,

SPRAYING

entire starting

paint containers, wash

can become electrically charged. Arcing may

then come in contact or close to ground. Arcing of suf

solvents, dust particles, and other flammable substances.

can cause a fire, explosion, or electrostatic

in serious bodily injury and property damage.

proper grounding as described in

IMMEDIA

system. Be sure you

to spray again.

TELY

cans and tools, are properly

occur if these

shock and re

Grounding

. Check for proper grounding of the

have corrected the problem before

below

STOP

Grounding

The

following are minimum requirements for grounding a basic electrostatic or objects which must also be grounded. Always check your local your

system is connected to a true earth ground.

Pump:

described

Air compressors and hydraulic power supplies:

according

Electrostatic

nection Graco Electrically Conductive Air Supply Hose; see ACCESSORIES section to order . Connect the air hose ground

Object being sprayed:

and grounded at all times. Contact points must be sharp points

All electrically conductive objects or devices

area, including paint containers and wash cans, must be properly

system. Y

electrical code for detailed grounding instructions. Be sure

ground by using a ground wire and clamp as

in your separate pump instruction manual.

to the manufacturer’s recommendations.

to a properly grounded air supply hose. Use only the

wire to a true earth ground.

or knife edges.

grounded.

our system may include other

Air Spray

Gun:

obtain grounding through con

keep the work piece hangers clean

equipment

ground

in the spray

All

persons entering the spray area:

ductive

soles, such as leather

must

be worn. Rubber or plastic soles are not conductive.

The floor of the spray area

grounded. Do not cover the floor with cardboard or any

and non-conductive material which would interrupt grounding continuity.

Flammable liquids

approved, quantity

All solvent pails:

conductive. Do not place the pail on any non-conductive

fi-

surface, grounding

10.

All air and fluid lines and electric cables

grounded.

grounded containers. Do not store more than

needed for one shift.

such as cardboard or paper

continuity

in the spray area must be kept in

use only grounded metal pails, which are

must be electrically conductive

shoes

, or personal grounding straps

must have con

the

, which would interrupt

must be properly

Flushing and Cleaning Safety

reduce the risk of static

the Pressure Relief Procedure

sure the turbine air (electrostatics) is

ing

or cleaning any part of the spray system.

Use

the lowest possible pressure to flush. T

grounded

point

metal waste container

flush or purge

equal to or greater than that of the fluid being sprayed.

equipment,

To clean the exterior of the equipment,

with

a flash point of higher than 100_ F (38

ALWAYS the

Use hangers.

Ventilate

vapors,

Check air exhaust velocity requirements. Check and follow all local safety

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

remove all solvent from the system before reactivating

spray gun.

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

the Spray Booth

prevent hazardous concentrations of toxic and/or

spray only in a properly ventilated spray booth.

and follow all National, State and Local codes regarding

and fire codes and OSHA standard 1910.107.

sparking or splashing, always follow

on page 2 before flushing.

OFF before flush

ALWA

YS use solvents with a flash

rigger the gun into

ALWAYS use solvents

_ C).

flammable

IMPORTANT

United

States Government safety standards have been adopted under the Occupational 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.

Safety and Health Act. These standards––particularly the

308-0843

TABLE OF CONTENTS

Warnings 2.

Terms 4.

Installation

Typical Warning Ventilate Install Install Install Connect Check Install

Operation

Operating Selecting Gun Activating Adjusting Adjusting Activating

Maintenance

Daily Clean Check

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

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

Installation5. . . . . . . . . . . . . . . . . . . . . . . . . . .

Signs5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

the Spray Booth6. . . . . . . . . . . . . . . . . . . . .

the Gun Controls and Display Module6. . . . .

the Gun Mounting Bracket6. . . . . . . . . . . . . . .

the Gun and Manifold6. . . . . . . . . . . . . . . . . . .

the Air

the Electrical Grounding8. . . . . . . . . . . . . . . .

the Fabric Cover8. . . . . . . . . . . . . . . . . . . . . . .

Functions9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Care and Cleaning

the Air Cap and Fluid Nozzle

for Fluid Leakage

, Fluid, and Fiber Optic Lines6. . . . .

Checklist9. . . . . . . . . . . . . . . . . . . . . . . . . .

a Fluid Nozzle and Air Cap9. . . . . . . . . . .

the Fluid T

the Spray Pattern9. . . . . . . . . . . . . . . . . . .

the T

the V

rigger Only9. . . . . . . . . . . . . . .

urbine Air Pressure

oltage Select (KV HI/LO)

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

. . . . . . . . . . .

. . . . . .

Service

the Gun and Relieve Pressure

Flush Remove Air Cap/Nozzle/Resistor Stud Replacement Electrode Barrel Barrel Fluid Power Power Turbine

Service

Gun

Manifold

PRO

10.

11.

12.

Accessories 32

Technical

Warranty Back

Graco

Gun from Manifold & Mounting Bracket

Replacement Removal Installation

Packing Rod Removal and Repair

Supply Removal and Replacement Supply Adjustment

Alternator Removal and Replacement

Notes

Parts Drawing

Parts List

Parts Drawing & List

4600HC Conversion Kit

Data

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

Phone Numbers

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

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

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

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

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

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

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

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

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

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

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

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

. . . . . . . . .

. . . . . . .

. . . . .

Back Cover

. . . .

Cover

18. 18

19.

20.

21.

22.

23.

25.

26.

28.

29.

30.

31.

35.

Troubleshooting

Pattern T

Spray Gun

Operation T

Electrical T

Electrical Tests

est Gun Resistance

T Test

Power Supply Resistance

Test

Resistor Stud Resistance

roubleshooting Chart

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

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

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

. . . . . . . . .

. . . . . . . .

TERMS

13.

14.

15.

16.

17.

WARNING: Alerts

CAUTION: Alerts

NOTE: Identifies essential procedures or helpful

user to avoid or correct conditions that

could

cause bodily harm.

user to avoid or correct conditions that could cause damage to or destruction of equipment.

information.

 

TYPICAL INSTALLATION

Non-Hazardous Area Hazardous Area

BASIC SYSTEM

Controls



Fig

24V Power Supply P/N 235–301

Cabinet

Shut-off device for fluid only operation

Bleed valve or 3 way solenoid

Fan Atom Air Lines

Air

Regulator

Cylinder Air Line

True Earth Ground

Controls

Fiber P/N 224–680/–686

Cabinet

Optic Cable

Grounded Turbine Air P/N

223–068/–074

KV Hi/Lo Air Line

Trigger

Module

P/N

235–768

Fluid Supply

Fiber Optic Cable P/N 224–670/–676

Hose

(gray hose)

(if low KV setting option is desired)

Gun

Manifold

P/N 224–094

PRO 4600 Gun P/N 224–224

(gun only

Manual gun/shroud

Recip.

235–094

P/N

SYSTEM OPTIONS

 Spraying Voltage Monitor  Air Pilot Fluid Regulator

, see

308–084 for

P/N)

Mount Assy

Display Module

P/N

224–1

Pressure

Air Control

Bulkhead P/N 224–261

Fluid Supply

Non-Hazardous Area Hazardous Area

Fig

Installing the System

Fig 1 , above, shows a typical Model 4600 system. Fig 2

shows some possible system options. For

designing a system that is customized for your applica

tion,

contact your Graco representative.

assistance

Air Pilot Fluid Regula tor P/N 224–531

01769

Warning Signs

Mount warning signs in the spray area where they can easily be seen and read by all operators. An English Warning Sign is provided with the gun. Additional English, French, German, and Spanish signs are available

at no charge. See

der

them.

the

ACCESSORIES

section to or



INSTALLATION

WARNING

Installing and servicing this equipment requires access or properly.

 Do not install or service this equipment unless

 Be sure your installation complies with National,

to parts which may cause electrostatic shock

other serious bodily injury if work is not performed

you

are trained and qualified.

State

and Local codes for the installation of elec

trical

apparatus in a Class , Group D Hazardous

Location.

2.3

in.

(58 mm)

PRO

4600 Gun with Standard Shroud P/N 235–893

12 in. (304 mm)

Fig

BACK MOUNTING POSITION

01876

 Check and follow all local safety and fire codes,

NFPA

33, NEC 504 and 516, and OSHA standard

1910.107.

Ventilate the Spray Booth

WARNING

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.

Electrically interlock the gun air supply with the ventilators

to prevent gun operation without ventilating fans

op erating. Check and follow all National, State, and Local codes

regarding air exhaust velocity requirements.

High

velocity air exhaust will decrease the operating ef ciency of the electrostatic system. The minimum allowable air exhaust velocity is 60 feet/minute (19 linear meters/minute).

Install the Gun Mounting Bracket

Attach

the

mounting bracket to the robot or reciprocator

See

the

ACCESSORIES

et and mount extension options and refer to Fig 3 and Fig

4 for mounting positions.

Fig 3

FRONT MOUNTING POSITION

section for the mounting brack

PRO

4600 Gun with Slotted Shroud P/N 235–894

8.8 in. (235 mm)

2.3

in.

(58 mm)

01876

fi-

Install the Gun and Manifold (See Fig 5 )

1. Remove the air cap nut/air cap assembly and slide the

shroud of

f the gun.

2. Connect the gun to the manifold by tightening the three socket head cap screws; use the ball end wrench (46), supplied. Make sure the o-ring is in place

on the manifold.

3. Slide

the gun

and manifold along the dovetail until the button head screw bottoms against the mounting bracket.

4. Secure

the gun to the mounting bracket with the but ton head screw , using the ball end wrench (46). Tighten

5. Slide ening nut be

the two mounting bracket setscrews.

the shroud onto the gun and secure it by tight

the air cap nut onto the gun barrel. T

just enough so that the air cap is snug

turned.

Connect the Air, Fluid, and Optional Fiber

Optic Lines (See Fig 6 )

To reduce the risk of electrostatic shock or other serious electrically

Only

injury

, the turbine air supply hose must be

connected to

Graco Electrically

Hose and connect the hose ground wire to a

earth

ground.

See

the

ACCESSORIES

cally

Conductive Air Supply Hose. This hose have special left-hand threads to prevent connecting another

Connect gun fluid solvent

type of

air supply hose to the gun turbine air inlet.

the air

, fluid, and optional fiber optic

manifold as shown in Fig 6 . Before connecting the

line, blow it out with air and flush it with solvent.

that is compatible with the fluid being sprayed.

WARNING

a true earth ground.

Conductive Air Supply

section to

order Graco Electri

ighten

the

but can still

Use

true

and the gun

lines to the

Use

6 308-084

INSTALLATION

ensure a dry

line

filter and an air and water separator on the air

Dirt and moisture can ruin the appearance of your fin-

, clean air supply to the gun, install an air

lines.

Manifold

O-Ring

Spray Gun

ished combination air filter/moisture separator is shown in

ACCESSORIES

Socket

Head

Cap Screws

workpiece and can cause the gun to malfunction. A

the

section.

Mounting

Plate

Dovetail

Set Screws

Fig

Shroud

Air Cap/Air Cap Nut

Connect

1/4” ID tube

4’ of

Button

Head

Screw

INSTALLED

0453

Connect 1/4” OD tube between fitting and control module

Square Head Set Screw

BACK

ON M

Mounting Block

Hex Head Cap Screws

01877

IEW OF MANIFOLD

OUNTING BRACKET

Set Screw

Connect Graco Grounded Air Hose

between fitting & control module

(left-hand thread)

ground

wire on the air hose to a true

Connect 3/8” OD tube between

fitting and control module

Connect a 1/4” npsm swivel

(included with manifold)

Fig

. Connect the

earth

ground.

fitting paint line

Shroud Exhaust

1/4” OD x 4’ tube

TURBINE

MAX WRP AIR AND FLUID

100 PSI (7 BAR)

ATO M

KV HI/LO

PAINT

EXH

CYL

F.O.

FAN

Connect Graco Fiber Optic Cable

(see Accessories)

Connect 3/8” OD tube between fitting and control module

Connect 1/4” OD tube between fitting and control module



0322

INSTALLATION

Check

the Electrical Grounding

(See Fig

7 )

WARNING

Proper electrical grounding of every part of your system is essential. For your safety , read the warning section, FIRE, EXPLOSION, OR ELECTROSTATIC SHOCK HAZARD , on page

3. Ground the system as explained there. Then your system as explained below

check

1. Completely turn off the air and fluid supplies to the gun.

2. Have a qualified electrician check the electrical grounding

continuity of the spray gun and air hose.

a. With the electrically conductive air hose con-

nected and properly grounded, use a megohmmeter to measure the resistance between the gun manifold and a true earth ground. to

Use an applied voltage of 500 minimum

1000 volts maximum.

b. If the resistance is greater than 2 megohms*,

check the tightness of the ground connections, and be sure the air supply hose ground wire is connected to a true earth ground. If the resistance is still greater than 2 megohms*, replace the

air supply hose.

True Earth

Ground

Grounded

Air Hose

Fig 7

Megohmmeter

See

ACCESSORIES to

order

Gun Manifold

0436

* If you are using the red colored hose, resis-

tance

should not exceed 100 ohms.

Install the Fabric Cover (See Fig 8 )

1. Install a fabric cover over the front of the gun and slide

it back to the back of the manifold. See ACCESSORIES tion.

cover the exposed tubing and hoses at

sec

Fabric

Cover

2. Cut

a small slit in the cover and route the two exhaust

tubes

outside the robot

ables

you to monitor the exhaust tubes

arm or reciprocator

for the pres

. This en

ence of any paint or solvent. See Check for Fluid

Leakage

prevent them from moving around.

page 12. Strap down the exhaust tubes

0437

Fig

 

Exhaust T

Slit

ubes

Exhaust T

ubes

0438

OPERATION

WARNING

Pressure

reduce the risk splashing in the eyes or on the skin, injury from moving parts or electrostatic shock, always follow this checking when and

1. Turn

2. T

3. Trigger the gun into a grounded metal waste

4. Open the pump drain valve, having a waste

5. Leave

If any fluid leakage from the gun is detected, stop

the sult in serious bodily injury and property damage. See

Relief Procedure

of serious bodily injury

procedure when shutting of

or servicing any part of the spray system,

installing, cleaning or changing fluid nozzles,

whenever you stop spraying.

f the air to the control module, except for

the

manifold air

used,

air pressure is needed at the regulator air

inlet

to relieve pressure in the fluid line.

urn of

f the fluid supply to the gun.

container

the pump drain valve open until you are

ready

to spray again.

spraying

gun shroud could cause fire or explosion and re

Check for Fluid Leakage

. If the air pilot fluid regulator is

to relieve fluid pressure.

ready to catch the drainage.

WARNING

IMMEDIATELY!

f the system, when

Fluid leakage into

, page 12.

, including

7. Be sure all refuse is removed from the spray booth.

8. Be sure all flammable liquids in the spray

are in approved, grounded containers.

booth

9. Be sure all conductive objects in the spray

are electrically

area the spray area is electrically conductive and grounded.

10. Be sure to check the manifold exhaust tubes for the presence of any fluid as instructed in

Check for Fluid Leakage

grounded and the floor of

, page 12

Selecting a Fluid Nozzle and Air Cap

This

gun is supplied with fluid nozzle 185–158 (1.5 mm)

and

air cap 177–033. If your application requires a ent nozzle and air cap combination, use instruction manual 307–803 to select the appropriate fluid nozzle and

air cap.

dif

fer-

Gun Functions

The

gun functions include the following:



Fluid T

rigger

(only)



Spray (



Turbine



properly

of fan air

Air

oltage Select

timed on/of

, atom air

, and paint)

f sequence

Operating Checklist

Check

the following list daily

system,

to help ensure you of safe, ef

1. Be sure all operators are properly trained to safely operate an automatic electrostatic air

system.

spray

2. Be

sure all operators are trained how to prop

and completely relieve system pressure.

erly

3. Be sure the system is thoroughly grounded. See FIRE, EXPLOSION OR ELECTRO-

STATIC SHOCK HAZARD on page 3, and Check the Electrical Grounding on

page 8.

4. Be

sure the operator and all persons entering

the

spray area are properly grounded by ing shoes with conductive soles or personal grounding

5. Be sure ventilation fans are operating properly.

sure the workpiece hangers

6. Be grounded. Contact points must be sharp points

straps.

or knife edges.

, before starting to operate

ficient operation.

are clean and

wear

the

Activating the Fluid Trigger Only

activate the fluid trigger alone, first relieve the air

sure

to the trigger module, then shut of

the AT

OM and F

air pressure to the CYL air supply line to activate the

mum gun’s

fluid trigger

AN air lines. Apply 50 psi (3.5 bar) mini

f the air supply to

pres

Adjusting the Spray Pattern

Follow the steps below to establish the correct fluid and

air flow. DO NOT

yet.

1. Adjust the fluid flow with the fluid line’ s pressure regulator.

2. Rotate

3. Use

NOTE:

page 13 to correct spray pattern problems.

the air cap for the desired spray pattern.

an air pressure regulator to adjust the degree of atomization cy,

always use the lowest air pressure possible.

See the

turn the turbine air (electrostatics)

and pattern width. For the most ef

Spray Pattern T

OPERA

roubleshooting Chart

TION continued on next page

flow

ficien-



OPERATION

Adjusting the Turbine Air Pressure

WARNING

The fan and atomizing air MUST be on before turning on the turbine air . Actuating the turbine

air

without fan and atomizing air flow could damage the gun and may create hazardous operating conditions damage.

1. Complete all the checks under the Operating

Checklist

2. Make the

3. The (2.8 bar) at the gun manifold inlet when air is flowing. The some (3.5 bar) air pressure as there is no added benefit and

and result in serious injury and property

on page 9.

sure the fan and atomizing air are on, then turn

turbine air (electrostatics) on.

turbine air pressure should be adjusted to 40 psi

gun may be operated at a lower air pressure, but

voltage loss could occur

turbine life could be reduced.

. Do not exceed 50 psi

MAINTENANCE

4. Check

NOTE:

kV.

If a ball

the

gun voltage will rise to about 85 kV

with

See the to correct voltage problems.

the gun electrostatics display module, if used,

see the voltage and current output levels.

The gun’

all resistive electrostatic guns.

Electrical T

s normal high voltage output is 60 to 70

end high voltage measurement probe is used,

. This will

roubleshooting Chart on page 15

happen

Activating the Voltage Select (KV HI/LO)

To change the voltage to the lower setting, activate the voltage select function (KV HI/LO). The lower voltage setting

is factory set to 60 kilovolts at zero microamperes.

change this setting, see page 25.

The valve used to activate the KV HI/LO switch must bleed

the air out of the line for the switch to draw back

the

high setting.

WARNING

reduce the risk

To splashing shock, always follow the Pressure Relief Proce- dure Warning on page 9 when shutting of f the system, ing, servicing, installing, cleaning or changing any part

Clean all parts with a non-conductive solvent, compatible with the fluid being sprayed. Conductive

in the

when you

in the system.

solvents can cause the gun to malfunction.

Methylene chloride

flushing damage nylon components.

Immersing as a cleaning method. Solvent left in gun passages could draw current and reduce the electrostatic ef fect. Solvent alternator

or cleaning solvent with this gun as it will

the gun

result in a poor quality paint finish and may

in the power supply cavity can reduce the

life.

of serious bodily injury

eyes or on the skin or electrostatic

stop spraying and before check

CAUTION

is not recommended as a

in solvent is not recommended

, including

Daily Care and Cleaning

1. Clean

2. Clean the outside of the gun daily with a soft cloth

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

4. Check the electrode wire. Straighten if bent, and

5. Check for any fluid leakage from the gun and fluid

6. Check all of the work hangers for material build-up;

To shock, BE SURE the turbine air (electrostatics) is off

the fluid and air line filters daily

dampened

Some applications require more frequent cleaning. Replace aged.

replace if broken or damaged. See Replacing the

Electrode

hoses.

clean

reduce the risk of fire, explosion, or electrostatic

before flushing the gun or

in a compatible solvent.

the fluid nozzle and air cap if they are dam

See

Clean the Air Cap and Fluid Nozzle

Needle

See

them if necessary

Check for Fluid Leaks.

WARNING

any part of the system.

10 308-084

7. Flush the fluid passages by alternating solvent and air.

Flush before

are

done operating the gun.

changing colors and whenever you

Clean the Air Cap and Fluid Nozzle

MAINTENANCE

Equipment

Soft bristle brush (supplied) Solvent compatible with fluid being sprayed

needed:

Procedure:

1. Follow

4. Carefully

the

Pressure Relief Procedure W

page

Remove the air cap assembly and gun shroud.

Clean the air cap, fluid nozzle, and front of the gun, using the soft bristle brush and solvent. Point the gun down while cleaning to prevent dirty sol vent from running back into the air passages. See Fig 9 .

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

reinstall the air cap assembly ing the electrode. Tighten the retaining nut until it is snug,

allowing the air cap to turn with resistance.

. A

void bend

arning

Fig 9

0439

MAINTENANCE continued on next page

308-08411

+ 25 hidden pages