Graco 307726T Model PRO AA5000 SPRAY GUN Owner's Manual

INSTRUCTIONS–PARTS LIST
307–726
This manual contains IMPORTANT
WARNINGS AND INSTRUCTIONS
READ AND RETAIN FOR REFERENCE
Model PRO AA5000
AUTOMATIC MID-RANGE ELECTROSTATIC
AIR-ASSISTED AIRLESS SPRAY GUN
66 bar (950 psi) MAXIMUM WORKING FLUID PRESSURE
7 bar (100 psi) MAXIMUM WORKING AIR PRESSURE
Part Number 218–928, Series A
With 0.381 mm (0.015 in.) spray tip, part no. 219–415
U.S. Patent No. 4,290,091; 4,219,865; 4,386,739; 3,843,052;
4,462,061; 4,497,447; 4,554,622
U.K. Patent No. 2,140,327B; 2,111,406B; 2,142,559B; 2,147,158
Patented 1986, 1987 Canada
Brevete 1986, 1987
French Patent No. 82 21202; 84 07942; 84 10234
Italian Patent No. 1,111,380
West German Patent No. DE 22 09 896
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
COPYRIGHT 1985, GRACO INC.
Rev. T
Supersedes S
TABLE OF CONTENTS
Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
How The Electrostatic Air Spray Gun Works . . . . 3
Safety Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–5
Installation
Typical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warning Signs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ventilate the Spray Booth . . . . . . . . . . . . . . . . . . . . . . .
Mount the Gun . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connect the Air Lines . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connect the Fluid Line . . . . . . . . . . . . . . . . . . . . . . . . . .
Check the Electrical Grounding . . . . . . . . . . . . . . . . . .
Installing the Optional Remote Fan Air Adapter . . . . .
6
6
7
7
7
7
8
8
Operation
Operating Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Filter the Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Install the Spray Tip and Air Cap . . . . . . . . . . . . . . . . . 9
Adjust the Spray Pattern . . . . . . . . . . . . . . . . . . . . . . . 10
Spraying Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Maintenance
Daily Care and Cleaning . . . . . . . . . . . . . . . . . . . . . . . 11
Flush the Spray Gun . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Ball Seat Housing & Resistor Replacement . . . . . . .
Barrel Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Barrel Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluid Needle Replacement . . . . . . . . . . . . . . . . . . . . .
Power Cartridge Replacement . . . . . . . . . . . . . . . . . .
Turbine Alternator Removal . . . . . . . . . . . . . . . . . . . . .
Fan Air Valve Replacement . . . . . . . . . . . . . . . . . . . . .
Piston Removal and Repair . . . . . . . . . . . . . . . . . . . . .
Disc Regulator O-Ring Replacement . . . . . . . . . . . . .
Muffler Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . .
18
19
19
20
21
22
22
23
24
24
Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Parts Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28–30
Dimensional Drawing . . . . . . . . . . . . . . . . . . . . . . . . . 31
Spray Tip Selection Chart . . . . . . . . . . . . . . . . . . 32–33
Technical Data . . . . . . . . . . . . . . . . . . . . . . . Back Cover
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . Back Cover
Graco Phone Numbers . . . . . . . . . . . . . . . Back Cover
Spray Pattern Troubleshooting Chart . . . . . . . . . . 13
TERMS
Gun Operation Troubleshooting Chart . . . . . . . . . 14
Electrical Troubleshooting Chart . . . . . . . . . . . . . . 15
Electrical Tests
Test Gun Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Test Power Supply Resistance . . . . . . . . . . . . . . . . . . 16
Test Resistor Stud Resistance . . . . . . . . . . . . . . . . . . 17
Service
Gun Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Electrode Wire Replacement . . . . . . . . . . . . . . . . . . . . 18
WARNING Alerts user to avoid or correct conditions that
could cause bodily harm.
CAUTION Alerts user to avoid or correct conditions that
could cause damage to or destruction of
equipment.
NOTE
Identifies essential procedures or helpful information.
HOW THE ELECTROSTATIC AIR SPRAY GUN WORKS
This gun combines electrostatic air spray and airless
spraying concepts. The air has three functions: (1) to
drive the turbine, (2) to help atomize the paint “tails”, and
(3) to help control the pattern size.
The turbine generates power that the power cartridge
converts to a high voltage current. The high voltage current charges the gun’s ionizing electrode.
Fluid is electrostatically charged as it passes the gun’ s
ionizing electrode. The charged fluid is attracted to the
grounded work piece, wrapping around and evenly coating all surfaces.
The spray tip shapes the fluid into a fan pattern, similar to
a conventional airless spray tip, but at a lower pressure.
Air from the air cap further atomizes the fluid and pushes
the paint tails into the pattern. The fan adjusting knob
controls the width of the pattern.
Note that the air-assisted airless spray gun dif fers from
the conventional air spray gun in that increasing the fan
air reduces the pattern width. T o increase the pattern
width, less fan air or a larger size tip must be used.
SAFETY WARNINGS
SERIOUS BODILY INJURY, EXPLOSION, FIRE, OR ELECTROST ATIC SHOCK
CAN OCCUR IF THE PRECAUTIONS BELOW ARE NOT FOLLOWED.
READ AND UNDERSTAND ALL INSTRUCTION MANUALS, T
WARNING LABELS BEFORE OPERATING EQUIPMENT.
AGS, AND
ELECTROSTATIC EQUIPMENT SHALL ONLY BE USED BY TRAINED,
QUALIFIED PERSONNEL WHO SHALL BE FULL Y CONVERSANT WITH THE
REQUIREMENTS STATED WITHIN THIS INSTRUCTION MANUAL.
FLUID INJECTION HAZARD
General Safety
Spray Tip Safety
This equipment generates very high fluid pressure. Spray from the gun,
leaks or ruptured components can inject fluid through your skin and into
your body and cause extremely serious bodily injury, including the need
for amputation. Also, fluid injected or splashed into the eyes or on the skin
can cause serious damage.
Use extreme caution when cleaning or changing spray tips. If the spray
tip clogs while spraying, stop spraying immediately. Follow the Pressure
Relief Procedure, then remove the spray tip to clean it.
NEVER point the spray gun at anyone or at any part of the body.
NEVER put hand or fingers over the spray tip.
NEVER try to “blow back” paint; this is NOT an air spray system.
NEVER try to stop or deflect leaks with your hand or body.
ALWAYS follow the Pressure Relief Procedure, at right, before cleaning
or removing the spray tip or servicing any system equipment.
BE SURE equipment safety devices are operating properly before each
use.
Medical Alert – Airless Spray Wounds
If any fluid appears to penetrate your skin, get EMERGENCY MEDICAL
CARE AT ONCE. DO NOT TREAT AS A SIMPLE CUT. Tell the doctor
exactly what fluid was injected.
Note to Physician: Injection into the skin is a traumatic injury. It
is important to treat the injury surgically as soon as possible. Do
not delay treatment to research toxicity. Toxicity is a concern with some
exotic coatings injected directly into the blood stream. Consultation
with a plastic surgeon or reconstructive hand surgeon may be advisable.
Spray Gun Safety Devices
Be sure all gun safety devices are operating properly before each use.
DO NOT remove or modify any part of the gun; this can cause a malfunction and result in serious bodily injury.
Diffuse
The gun diffuser, which is part of the ball seat housing, breaks up spray
and reduces the risk of fluid injection when the spray tip is not installed. To
check diffuser operation, follow the Pressure Relief Procedure, at right,
then remove the spray tip. Aim the gun into a grounded metal pail. With
the turbine air OFF, and using the lowest possible pressure, trigger the
gun. If the fluid emitted is not diffused into an irregular stream, replace the
ball seat housing
NEVER wipe off build-up around the spray tip or remove the spray tip until
pressure is fully relieved.
Pressure Relief Procedure
To reduce the risk of serious bodily injury, including fluid injection, splashing in the eyes or on the skin, injury from moving parts or electrostatic
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 tips, and whenever you stop spraying.
1. Turn off all the air to the gun except the cylinder (actuating) air.
2. Turn off the fluid supply to the gun.
3. Actuate the gun into a grounded metal waste container to relieve fluid
pressure.
4. Open the pump drain valve, having a waste container ready to catch
the drainage.
5. Leave the pump drain valve open until you are ready to spray again.
If you suspect that the tip or hose is completely clogged, or that pressure
has been fully relieved after following the steps above, VERY SLOWLY
loosen the air cap retainer or hose end coupling and relieve pressure
gradually, then loosen completely. Now clear the tip or hose.
Bleed-Type Air Shutoff Valve and Fluid Drain Valve
These two accessories are required in your system to help reduce the
risk of serious bodily injury, including splashing in the eyes or on the skin
and injury from moving parts if you are adjusting or repairing the pump.
The bleed-type air shutoff valve relieves air trapped between this valve
and the pump after the air regulator is shut off. Trapped air can cause the
pump to cycle unexpectedly. Locate the valve within easy reach of the
pump.
The fluid drain valve assists in relieving fluid pressure in the displacement
pump, hose and gun; triggering the gun to relieve pressure may not be
sufficient.
EQUIPMENT MISUSE HAZARD
General Safety
System Pressure
Any misuse of the spray equipment or accessories, such as overpressurizing, modifying parts, using incompatible chemicals and fluids, or using worn or damaged parts, can cause them to rupture and result in fluid
injection, fire, explosion or property damage.
This gun has a maximum fluid working pressure of 66 bar (950 psi). Never
exceed the maximum working pressure of the gun or any other component or accessory used in the system.
NEVER alter or modify any part of this equipment; doing so could cause it
to malfunction.
CHECK all spray equipment regularly and repair or replace worn or damaged parts immediately.
Read and follow the fluid and solvent manufacturer’s literature regarding
the use of protective clothing and equipment.
4
307-726
Fluid Compatibility
BE SURE all fluids and solvents used are chemically compatible with the
“Wetted Parts” shown in the TECHNICAL DATA on the back cover .
Always read the fluid and solvent manufacturer’s literature before using
the fluid or solvent in this gun.
FIRE, EXPLOSION, OR ELECTROSTATIC SHOCK HAZARD
To reduce the risk of fire, explosion, or electrostatic shock, which may result from electrical discharge, it is essential that:
S
S
S
All parts of the electrostatic system are properly grounded.
All personnel in or close to the spray area are properly grounded.
All electrically conductive objects or devices in the spray area,
including paint containers, wash cans and tools, are
properly
grounded.
When operating the electrostatic device, 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. Arcing of suf ficient energy levels can ignite the fluid
being sprayed, fumes from solvents, dust particles, and other flammable
substances. This can cause a fire or explosion and result in serious bodily injury and property damage.
6. All persons entering the spray area: shoes must have conductive
soles, such as leather, or personal grounding straps must be worn.
Rubber or plastic soles are not conductive.
7. 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.
8. Flammable liquids in the spray area must be kept in approved,
grounded containers. Do not store more than the quantity needed for
one shift.
9. 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.
10. All air and fluid lines and electric cables must be properly grounded.
Flushing and Cleaning Safety
Static electricity can also be generated by the flow of fluid through the
pump, hose, gun, and nozzle, but it is dissipated through proper grounding as described in Grounding below.
To reduce the risk of static sparking or splashing, always follow the Pressure Relief Procedure on page 4 and remove the spray tip before flushing.
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.
Be sure the turbine air (electrostatics) is OFF before flushing or
cleaning any part of the spray system.
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. Pump: ground by using a ground wire and clamp as described in your
separate pump instruction manual.
2. Air compressors and hydraulic power supplies: ground according to
the manufacturer’s recommendations.
3. Electrostatic Spray Gun: obtain grounding through connection to a
properly grounded air supply hose. Use only the Graco Electrically
Conductive Air Supply Hose; see ACCESSORIES section to order.
Connect the air hose ground wire to a true earth ground.
4. Object being sprayed: keep the work piece hangers clean and
grounded at all times. Contact points must be sharp points or knife
edges.
5. All electrically conductive objects or devices in the spray area,
including paint containers and wash cans, must be properly
grounded.
Use the lowest possible pressure to flush. Trigger the gun into a grounded
metal waste container.
To flush or purge equipment, ALWAYS use solvents with a flash point
equal to or greater than that of the fluid being sprayed.
To clean the exterior of the equipment, ALWAYS use solvents with a flash
point of higher than 38_ C (100_ F).
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.
NEVER operate the spray gun unless the ventilating fans are operating.
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.
HOSE SAFETY
Highly pressurized fluid contained in the hose can be very dangerous. If
the hose develops a leak, split or rupture, due to any kind of wear, damage or misuse, high pressure spray emitted from it can cause a fluid
injection injury or other serious bodily injury or property damage.
TIGHTEN all fluid connections securely before each use. High pressure
fluid can dislodge a loose coupling or allow high pressure spray to be
emitted from the coupling.
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.
DO NOT try to recouple high pressure hose or mend it with tape or any
other device. A repaired hose cannot contain the high pressure fluid.
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.
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.
307-726
5
TYPICAL INSTALLATION
A*
B
The air supply to the gun must be electrically
interlocked with the ventilators to prevent the power
supply from operating without ventilating fans on.
Electric Box
K
Main Air Line
P
E
Fluid Line
Cyl. Air
J*
M
Atom. Air
WARNING
SIGN
Turbine Air
E
Opt. Remote Fan Air
S*
F
*A
R*
C
D
G
L
Q
N
H*
NON–HAZARDOUS AREA
HAZARDOUS AREA
KEY
A*
B
C
D
E
F
G
H*
Air Supply Shut-off Valve (bleed-type)
Air & Water Separator
Ball Valve
Air Line Lubricator
Air Regulator (bleed-type)
Pump
Fluid Filter
Drain Valve
J*
K
L
M
N
P
Pump Ground Wire
Air Filter (40 micron)
Fluid Regulator
Air Supply Line Shutoff Valve
ES Automatic Gun
Normally Closed, 3-Way Air Solenoid
Valve or 3-Way Manual Valve
Q
R*
S*
Exhaust Hose
Air Hose Ground Wire
Grounded Air Hose
*Required for safe operation. Must be purchased separately. See ACCESSORIES.
The Typical Installation shown above is only a guide for
selecting and installing an electrostatic air-assisted airless 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.
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.
The pump you use should have a maximum working
pressure of 66 bar (950 psi). If the pump you are using
has a higher maximum working pressure, a regulator
MUST be used to limit the pressure to 66 bar (950 psi).
Graco’s 10:1 Ratio Monark Pump, part no. 217–523, may
be used in this system. See ACCESSORIES.
Be sure your installation complies with
National,
State and Local codes for the installation of electrical
apparatus in a Class , Group D Hazardous Location.
Warning Signs
A warning sign in English and one in Spanish is supplied
with the gun. Mount warning signs in the spray area
where they can easily be seen and read by all operators.
Additional English, French, German, and Spanish signs
are available at no charge. See the ACCESSORIES section to order them.
6
307-726
Check and follow all local safety and fire codes,
NFPA 33, NEC 504 and 516, and OSHA standard
1910.107.
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 of the National, State and Local
codes regarding air exhaust velocity requirements.
NOTE: High velocity air exhaust will decrease the operating efficiency of the electrostatic system. The
minimum allowable air exhaust velocity is 19
linear meters/minute (60 ft/min).
Mount the Gun
Mount the gun on a stationary support or on a reciprocating arm. The mounting rod must be properly grounded.
Mount the gun so the front of the gun is 254 to 300 mm (10
to 12 in.) from the work piece. Refer to the DIMENSIONAL DRAWING on page 31.
Connect the Air Line (Refer to the Typical
Installation Drawing)
WARNING
To reduce the risk of electrostatic shock or other
serious bodily injury , the turbine air supply hose
must be electrically connected to a true earth
ground. Use Only Graco Electrically Conductive Air Supply Hose. This hose, and the gun,
have special threads which prevent using any
other type of hose with the gun. See the ACCESSORIES section to order the hose.
1. Install an air line filter (K) and an air and water separator (B) on the main air line to ensure a dry, clean air
supply to the gun. Dirt and moisture can ruin the
appearance of your finished workpiece and can
cause the gun to malfunction.
2. Install an air line lubricator (D) close to the pump air
inlet.
3. Install a normally closed, 3-way air solenoid (P) or
manual valve on the turbine, cylinder and remote fan
air supply lines. (The remote fan line is optional.)
4. Install a bleed-type air regulator (E) on the pump,
turbine, atomizing, cylinder, and remote fan air supply lines to control air pressure to the pump and gun.
(The remote fan line is optional.)
5. Install a bleed-type air shutoff valve (A) on the main
air line and the pump air line to shut of f air to the
pump.
WARNING
The bleed–type air shutoff valve (A) is required in
your system to relieve air trapped between this
valve and the pump after the air regulator is
closed. Trapped air can cause the pump to cycle
unexpectedly, which could result in serious bodily
injury, including splashing in the eyes or on the skin
and injury from moving parts.
6. Install an air shutoff valve (M) on each gun air supply
line to shut off air to the gun.
7. Connect the cylinder air line to the gun’s cylinder air
inlet (marked CYL).
8. Connect the atomizing air line to the gun’s atomizing
air inlet (marked ATOM).
9. Connect the turbine air supply line to the gun’ s air
inlet (marked ES). The gun air inlet fitting has a left
hand thread. Connect the air supply hose ground
wire (R) to a true earth ground.
10. A remote fan air adapter is available to control the fan
air at the control booth. See Installing the Optional
Remote Fan Air Adapter, on page 8.
Connect the Fluid Line (Refer to the Typical
Installation Drawing)
1. Before connecting the fluid line, blow it out with air
and flush it with solvent. Use solvent which is compatible with the fluid to be sprayed.
2. Install a fluid regulator (L) on the fluid line to control
fluid pressure to the gun.
3. Install a fluid filter (G) and drain valve (H) at the pump
outlet.
WARNING
The fluid drain valve (H) is required in your system
to assist in relieving fluid pressure in the displacement pump, hose and gun; triggering the gun to
relieve pressure may not be suf ficient. Install a
drain valve close to pump’ s fluid outlet. The drain
valve reduces the risk of property damage or serious bodily injury, including splashing in the eyes or
on skin and contamination from hazardous fluids.
4. Connect the fluid line to the gun fluid inlet.
INSTALLATION
Check the Electrical Grounding
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 5.
Ground the system as explained there. Then
check your system as explained below.
KEY
Y
Z
AA
BB
Turbine Air Inlet
True Earth Ground
Ohmmeter
Grounded Air Hose
Z
See ACCESSORIES
to order.
AA
1. Shut off all air lines to the gun.
2. Shut off the fluid supply to the gun.
BB
3. Have a qualified electrician check the electrical
grounding continuity of the spray gun and air hose.
a. With the electrically conductive air hose (BB)
connected and properly grounded, use a
megohmmeter (AA) to measure the resistance
between the turbine air inlet (Y) and a true earth
ground (Z). Use an applied voltage of 500 volts
minimum to 1000 volts maximum. See Fig 1.
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.
Y
Fig 1
Installing Optional Remote Fan Air Adapter
NOTE: See ACCESSORIES to order the Remote Fan
Air Adapter 181–053 and 90 Elbow 108–234.
1. Place a wrench on the flats of the valve housing (48)
and remove the fan air valve assembly from the gun
body (1). See Fig 20, page 22.
2. Apply PTFE tape to the threads of the remote fan air
adapter (part no. 181–053) and install it in the gun
body (1). Torque the adapter to 1.1 to 1.4 Nm (10 to
12 in-lb).
3. Install 90 elbow (part no. 108–234) in the adapter.
4. Install the remote fan air line, solenoid valve, air regulator and shut-off valve as instructed in Connect the
Air Lines, on page 7.
OPERATION
WARNING
Pressure Relief Procedure
3. Trigger the gun into a grounded metal waste container to relieve fluid pressure.
To reduce the risk of serious bodily injury , including
fluid injection, splashing in the eyes or on the skin,
4. Open the pump drain valve, having a waste coninjury from moving parts or electrostatic shock, always
tainer ready to catch the drainage.
follow this procedure when shutting of f the system,
5. Leave the pump drain valve open until you are
when checking or servicing any part of the spray sysready to spray again.
tem, when installing, cleaning or changing fluid tips,
and whenever you stop spraying.
If you suspect that the tip or hose is completely
clogged, or that pressure has not been fully relieved
after following the steps above. VER
Y SLOWLY
1. Turn off all the air to the gun except the cylinder
loosen
the
air
cap
retainer
or
hose
end
coupling
and
(actuating) air.
relieve pressure gradually, then loosen completely .
2. Turn off the fluid supply to the gun.
Now clear the tip or hose.
Operating Checklist
Filter the Fluid
Check the following list daily, before starting to operate
the system, to help ensure you of safe, ef
ficient
operation.
Filter the fluid with the gun fluid filter (35) to remove
coarse particles and sediment which could clog the spray
tip. See Fig 5, page 11.
1. Be sure all operators are properly trained to
safely operate an automatic air-assisted airless electrostatic spray system.
Install the Spray Tip and Air Cap
2. Be sure all operators are trained how to properly and completely relieve system pressure.
WARNING
For your safety, always follow the Pressure Relief
Procedure, above, before installing, or removing
the spray tip or air cap.
3. Be sure the system is thoroughly grounded.
See FIRE, EXPLOSION OR ELECTROSTATIC SHOCK HAZARD on page 5, and
Check the Electrical Grounding on page 8.
1. See the SPRAY TIP SELECTION CHART, page 32,
to select the appropriate spray tip for your application. The fluid output and fan width depends on the
spray tip size, fluid viscosity, and fluid pressure.
4. Be sure the operator and all persons entering
the spray area are properly grounded by wearing shoes with conductive soles or personal
grounding straps.
2. Place the spray tip (10) in the air cap (9), aligning the
tab of the tip with the groove in the air cap. Be careful
not to damage the electrode wire (GG). See Fig 4,
page 10.
5. Be sure ventilation fans are operating
properly.
6. Be sure the workpiece hangers are clean and
grounded. Contact points must be sharp
points or knife edges.
7. Be sure all refuse is removed from the spray
booth.
8. Be sure all flammable liquids in spray booth
are in approved, grounded containers.
9. Be sure all conductive objects within 6 m
(20 ft) of the gun are electrically grounded and
the floor of the spray area is electrically conductive and grounded.
3. Place the air cap assembly on the gun. Screw the
retaining nut (8) firmly onto the gun to prevent leakage between the tip and ball seat housing (11).
NOTE: The air cap and spray tip position determines the
direction of the spray pattern. See Fig 2, page
10.
WARNING
Operating the gun without the electrode wire or with
a bent or damaged electrode wire will impair the
electrical continuity of the gun. To reduce the risk of
electrical discharge, which could cause electrostatic shock, fire, or explosion, BE SURE the electrode
wire is properly installed in the gun (see page 18)
and is not bent or damaged before operating the
gun.
OPERATION
Adjust the Spray Pattern
Follow the steps below to establish the correct fluid flow
and air flow. DO NOT turn the turbine air on yet.
CAUTION
Be careful not to damage the electrode by jamming it into an object when operating or setting
down the gun.
1. Set the fluid pressure at about 21 bar (300 psi), using
the fluid regulator.
2. Trigger the gun to check the atomization; don’t be
concerned about the pattern shape yet.
VERTICAL SPRAY PATTERN
HORIZONTAL SPRAY PATTERN
3. Increase the fluid pressure just to the point that any
further increase in fluid pressure does not significantly improve fluid atomization. DO NOT exceed 66
bar (950 psi) fluid pressure.
4. Be sure the fan adjusting knob (AA) is closed (turned
fully counterclockwise). See Fig 4.
Fig 2
5. Set the atomizing air pressure to 3.1 bar (45 psi).
6. First, complete all the checks under the Operating
Checklist on page 9. Then turn the turbine air on.
NOTE: Provide a 3.1 bar (45 psi) clean, dry, regulated air
supply to the gun to ensure full voltage from the
power supply. The gun may be operated at lower
turbine air pressure, but may lose some electrostatic effect. Do not operate the turbine at an air
pressure greater than 3.1 bar (45 psi) as there is
no benefit and turbine life will be reduced.
7. Check the spray pattern, then adjust the air pressure
until all the tails are completely atomized and pulled
into the spray pattern. See Fig 3.
8. If a narrower pattern is desired, try turning the fan
adjusting knob (AA) clockwise. If the pattern is still
not narrow enough, increase the air line pressure
slightly or use a different size tip.
NO AIR
TOO LITTLE AIR
Fig 3
KEY
AA
GG
8
9
9
GG
8
This gun has a built-in lead and lag operation. The gun
begins emitting air before the fluid is discharged. When
you release the trigger, the fluid stops before the air flow
stops. This helps prevent fluid buildup on the air cap.
307-726
Tab
43
Spraying Operation
10
Spray Tip
Trigger Adjusting Nut
ES Indicator Lights
10
See the Spray Pattern Troubleshooting Chart
on page 13 to correct spray pattern problems.
When spraying, the ES indicator lights (43) should glow,
indicating the electrostatic charge. See Fig 4.
10
15
43
Fan Adjusting Knob
Electrode Wire
Retaining Nut
Air Cap
NOTE: A remote fan air adapter is available to control
the fan air at the control booth.
See
ACCESSORIES.
Adjust the system’s control device, if it is automatic, so
the gun starts spraying just before meeting the work
piece, and stops as soon as the work piece has passed.
RIGHT AMOUNT
OF AIR
15
Fig 4
AA
MAINTENANCE
Daily Care and Cleaning
CAUTION
Do not use metal tools to clean the air cap holes as
this may scratch them, and make sure the electrode wire is not damaged. Scratches in the air cap
holes or a damaged electrode wire can distort the
spray pattern.
CAUTION
Clean all parts with a non-conductive solvent,
compatible with the fluid being sprayed. Conductive solvents can cause the gun to malfunction.
Methylene chloride is not recommended as a
flushing or cleaning solvent with this gun as it will
damage nylon components.
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 ef fect.
Solvent in the power supply cavity can reduce the
alternator life.
WARNING
To reduce the risk of serious bodily injury, including
splashing in the eyes or on the skin or electrostatic
shock, always follow the Pressure Relief Procedure Warning on page 9 when shutting off the system, when you stop spraying and before checking,
servicing, installing, cleaning or changing any part
in the system.
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.
6. Clean the air cap and spray tip daily, minimum. Some
applications require more frequent cleaning.
Replace spray tip and air cap if they are damaged.
a. Remove the air cap and spray tip.
b. Clean the tip and air cap with solvent and scrub
with a soft brush.
WARNING
To avoid damaging the ball seat housing resistor ,
use a soft bristle brush dipped in solvent to clean;
DO NOT soak it in solvent! A damaged resistor will
impair the electrical continuity and could result in
electrical discharge, which could cause electrostatic shock, fire, or explosion.
1. Clean the fluid and air line filters daily.
2. Check all of the work hangers for build-up of material;
clean them, if necessary.
WARNING
To reduce the risk of fire, explosion, or electrostatic
shock, BE SURE the turbine air (electrostatics) is off
before flushing the gun or any part of the system.
c.
3. Flush before changing colors and whenever you are
done operating the gun. See Flush the Spray Gun.
4. Clean the gun fluid filter (35) daily. See Fig 5.
a. Unscrew and remove the fluid inlet fitting (34).
b. Remove the filter (36) and clean thoroughly in a
compatible non-conductive solvent.
c.
Reinstall the filter and inlet fitting. DO NOT over
tighten the inlet fitting as over tightening could
distort the filter.
Use a soft brush or other soft tool, with an air
blow gun, to clean air cap passages. Take care
not to scratch any surfaces. If air cap holes are
plugged, use a round toothpick to unplug the
holes.
7. Check the electrode wire (GG). See Fig 4. Straighten
if bent, and replace if broken or damaged. See Electrode Wire Replacement.
KEY
34
35
36
Fluid Inlet Fitting
Fluid Filter
Filter Retainer
34
35
36
5. Clean the outside of the gun daily with a soft cloth
dampened in a compatible solvent.
Fig 5
307-726
11
MAINTENANCE
Flush the Spray Gun
WARNING
To reduce the risk of fire, explosion, or electrostatic
shock, the turbine air (electrostatics) must be of f
before flushing.
CAUTION
Methylene chloride is not recommended as a
flushing or cleaning solvent with this gun as it will
damage nylon components.
1. Follow the Pressure Relief Procedure Warning on
page 9.
12
307-726
2. Disconnect and plug the fluid line.
3. Connect the solvent supply to the gun.
4. Flush the gun with solvent until it is clean.
5. Follow the Pressure Relief Procedure W arning,
then disconnect the solvent supply.
6. Reconnect the fluid supply line.
7. Actuate 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 electrostatic 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.
WARNING
Pressure Relief Procedure
3. Trigger the gun into a grounded metal waste container to relieve fluid pressure.
To reduce the risk of serious bodily injury , including
fluid injection, splashing in the eyes or on the skin,
4. Open the pump drain valve, having a waste coninjury from moving parts or electrostatic shock, always
tainer ready to catch the drainage.
follow this procedure when shutting of f the system,
5. Leave the pump drain valve open until you are
when checking or servicing any part of the spray sysready to spray again.
tem, when installing, cleaning or changing fluid tips,
and whenever you stop spraying.
If you suspect that the tip or hose is completely
clogged, or that pressure has not been fully relieved
after following the steps above. VER
Y SLOWLY
1. Turn off all the air to the gun except the cylinder
loosen the air cap retainer or hose and coupling and
(actuating) air.
relieve pressure gradually, then loosen completely .
2. Turn off the fluid supply to the gun.
Now clear the tip or hose.
NOTE: Check all possible remedies in the Troubleshooting Charts before disassembling the gun.
PROBLEM:
IMPROPER SPRAY
PATTERN
CAUSE
SOLUTION
Fluttering or spitting
spray
Insufficient fluid supply.
Adjust fluid regulator or fill fluid tank.
Loose or cracked coupler at fluid inlet.
Tighten or repair fluid inlet coupler.
Loose fluid tube.
Tighten fluid tube.
Fluid build-up or spray tip partially
plugged.
Clean spray tip.
Air horn holes on defective side of
pattern partially or totally plugged.
Clean air horn holes with solvent
and soft brush.
Pattern pushed to one
side, same side of air
cap gets dirty
Air horn holes partially or totally
plugged.
Clean air horn holes with solvent
and soft brush.
Tails in pattern
Air pressure too low.
Increase air pressure.
Fluid pressure too low.
Increase fluid pressure.
Irregular pattern
307-726
13
GUN OPERATION TROUBLESHOOTING CHART
PROBLEM
CAUSE
SOLUTION
Air leakage from front of
gun.
Piston assembly not seating properly.
Clean, service piston assembly.
See page 23.
Worn or broken o-ring.
Replace o-ring. See page 23.
Air stem packing too tight.
Loosen packing. See page 23.
Loose or worn ball seat housing.
Tighten or replace ball seat housing.
See page 18.
Loose spray tip.
Tighten spray tip.
Spray tip washer worn or missing.
Replace washer.
Insufficient air pressure.
Increase air pressure, use least air
pressure needed for good results.
Using too large of a spray tip.
Use a smaller size spray tip.
Fluid poorly mixed or filtered.
Remix or refilter fluid.
Improper thinner being used.
Use proper thinner.
Paint viscosity too high.
Thin paint or use larger spray tip.
Too much air pressure.
Reduce, use least air pressure
needed for good results.
Fluid thinned too much.
Properly thin fluid.
Fluid low.
Check fluid supply, add fluid if
necessary.
Broken fluid needle shaft.
Replace needle.
Dirty or clogged spray tip.
Clean spray tip. See page 11.
Damaged spray tip.
Check, replace spray tip. See page 9.
Booth exhaust air flow insufficient or not
directed properly.
Check for proper CFM, check baffles,
and direction of air flow.
Improper distance between gun and
work piece.
Adjust distance to 203 to 305 mm
(8 to12 in.).
Worn or broken piston o-ring.
Replace o-ring. See page 23.
Fluid leakage from
front of gun.
“Orange Peel” finish.
Excessive spray fog.
No fluid sprays from
gun.
Equipment covered
with fluid.
Gun still actuated after
cylinder air shut off
14
307-726
ELECTRICAL TROUBLESHOOTING CHART
PROBLEM
CAUSE
SOLUTION
Poor wrap–around.
*Turbine alternator not operating
Check air supply to turbine. Check
for dirt or moisture in turbine. See
page 22.
Improper distance between gun
and work piece.
Adjust spraying distance to
203 to 305 mm (8 to 12 in.).
Parts poorly grounded.
Clean work piece hangers, check for
proper ground on conveyer or track.
High booth exhaust velocity.
Reduce within code limits.
Atomizing air pressure too high.
Reduce air pressure.
Fluid resistivity too low.
Check fluid resistivity with paint
meter and probe.
Faulty gun resistance.
Check gun resistance. See page 16.
Faulty resistor stud resistance.
Check resistor stud resistance.
See page 17.
Faulty power supply resistance.
Check power supply resistance.
See page16.
Faulty spray tip assembly.
Replace spray tip assembly.
See page 9.
*Faulty turbine alternator.
Be sure plug is in place on back of
turbine alternator housing.Remove
and test turbine alternator. See
page 22.
Operator not properly grounded
or is in contact with ungrounded
object.
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.
Gun not properly grounded.
See Check the Electrical Grounding,
page 8. Be sure Graco electrically conductive air supply hose is being used
and is properly grounded.
Work piece not properly
grounded.
Clean work piece hangers. Check
for proper ground on conveyor or
track.
Operator gets mild
shock.
Operator gets mild
shock when touching
work piece.
*ES indicator light not on when gun is triggered.
307-726
15
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 (4) and the
ball seat housing and resistor (11) as well as the continuity of the electrical path between components.
KEY
A
GG
1
67
Megohmmeter
Electrode
Gun Body
Air Inlet
A
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 electrostatic 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.
1
67
Test Gun Resistance
Measure the resistance between the end of the electrode
wire (GG) and the gun air fitting (67). See Fig 6. The resistance should be between 115 to 152 megohms. If the
resistance is outside the specified range, go to the next
test. If the resistance is correct, refer to the Electrical
Troubleshooting Chart on page 15 for other possible
causes of poor performance.
Test Power Supply Resistance
Remove the power cartridge from the gun body
Power Cartridge Replacement.
GG
Fig 6
. See
Remove the turbine alternator from the power supply .
See Turbine Alternator Removal.
Measure the resistance from the center prong (EE) in the
power supply to the contact spring (4c) on the other end
of the power supply. See Fig 7.
KEY
A
EE
4
4c
Megohmmeter
Connector Prong
Power Supply
Contact Spring
A
The resistance should be 95 to 122 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.
EE
4c
Fig 7
16
307-726
4
ELECTRICAL TESTS
Test Resistor Stud Resistance
Insert a conductive rod (FF) into the gun barrel (removed
for the power supply test) and against the metal contact
(AA) in the front of the barrel. See Fig 8.
Measure the resistance between the conductive rod (FF)
and the gun electrode (GG). The resistance should be 20
to 30 megohms. If the resistance is correct, refer to the
Electrical T roubleshooting Chart for other possible
causes of poor performance, or contact the nearest
authorized service agency.
The resistance should be 20 to 30 megohms. If the resistance is correct, the electrode wire is defective and must
be replaced. See Electrode Wire Replacement. If the
resistance is outside the specified range, the resistor is
defective and the ball seat housing (1
1) must be
replaced. See
Ball Seat Housing & Resistor
Replacement.
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.
If the resistance is outside the specified range, remove
the electrode wire (GG). See Electrode Wire Replacement. Measure the resistance between the conductive
rod (FF) and the resistor (LL) in the outside diameter of
ball seat housing (11). See Fig 9.
KEY
A
AA
FF
GG
12
KEY
Megohmmeter
Metal Contact
Conductive Rod
Electrode
Gun Barrel
FF
LL
11
A
Conductive Rod
Resistor
Ball Seat Housing
FF
AA
12
11
GG
Fig 8
FF
LL
Fig 9
307-726
17
SERVICE
Gun Disassembly
3.
WARNING
Installing and servicing this equipment requires
access to parts which may cause electrostatic
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.
Follow the Pressure Relief Procedure W arning,
page 13, before servicing the gun or any part of the
system. Disconnect the fluid hose from the gun.
NOTE: Check all possible remedies in the
Troubleshooting Charts before disassembling the gun.
CAUTION
If the plastic parts of the gun must be held
securely, AL WAYS clamp them in padded
jaws to prevent damage to the parts.
vice
Install the long end of the new wire in the hole
closest to the tab of the tip. Push the wire in, aligning
the short end of the wire with the other hole in the tip.
Pull on the front of the wire to seat it.
NOTE: A box of ten electrodes is included in the tool kit.
See the PARTS LIST.
Ball Seat Housing & Resistor Replacement
1.
Unscrew the retaining nut (8) . Remove the air
cap (9) and spray tip (10). See Fig 10.
2.
Insert the special wrench (55f) in the front of the
gun. While triggering the gun, unscrew the ball seat
housing (11) and remove it. See Fig 11.
3.
If you are replacing the fluid needle assembly, do
not reassemble the gun.
If no further service is required, install the new housing in the reverse order of disassembly . Torque the
ball seat housing to 1.1 N m (10 in-lb) (snug); DO
NOT OVER TIGHTEN.
ALWAYS lubricate o-rings and seals with petroleum jelly. DO NOT over-lubricate.
ALWAYS remove gun from worksite for service or
repair. Service or repair area must be clean.
Flush the gun as described under Flush the Spray Gun.
Follow the Pressure Relief Procedure W arning on
page 13. Disconnect the air and fluid line from the gun.
KEY
GG
8
9
10
CAUTION
DO NOT over tighten the ball seat housing (1 1).
Excess torque will damage it.
KEY
Electrode Wire
Retaining Nut
Air Cap
Spray Tip
11
55f
Ball Seat Housing
Wrench
11
Torque to
1.1 Nm
(10 in-lb)
13
10
9
GG
55f
8
Fig 10
Gun Assembly Note
Whenever you are tightening plastic parts where there is
no torque specified in the instructions, tighten the parts
finger-tight and then retighten with a wrench 1/4 to 1/2
turn.
55f
Electrode Wire Replacement
1.
2.
Unscrew the retaining nut (8). Remove the air
cap (9) and spray tip (10). See Fig 10.
11
Use a needle nose pliers to gently pull the electrode wire (GG) out the back of the spray tip.
Fig 11
18
307-726
SERVICE
Barrel Removal
KEY
1.
Remove the ring nut, air cap, and spray tip.
44
55c
2.
Unscrew the fluid tube connector (FF) at the bottom of the fluid tube (37), then pull the tube out of the
inlet. See Fig 16.
3.
If you are replacing the needle, insert the special
wrench (55f) in the front of the gun. While triggering
the gun, unscrew the ball seat housing (1 1) and
remove it. See Fig 11.
Cap Screw
Wrench
55c
44
NOTE: Before removing the trigger adjusting nut (15),
be sure to note its position for reassembly.
4.
Remove the trigger screws (33), trigger adjusting nut (15), and trigger (16). See Fig 14.
5.
Remove ES indicator lights (43). Using the
wrench (55c) supplied, loosen and remove the two
socket head cap screws (44) from the gun. See Fig
12.
Fig 13
Hold the gun handle (1) with one hand and pull the
gun barrel (12) straight up to remove it. See Fig 13.
2
5
12
6.
KEY
Power Cartridge
Gasket
Gun Barrel
12
CAUTION
To avoid damaging the power cartridge, always
pull the gun barrel straight up. If necessary, gently
move the gun barrel from side to side to free it from
the gun handle.
5
2
NOTE: The gasket (5) should be left in the gun handle
(1) if the gasket is not to be replaced.
Barrel Reassembly
1.
If the needle assembly was removed, reinstall it
as described on page 20.
2.
Be sure the gasket (5) is in place. Replace if
damaged. Place the barrel over the power cartridge
(2) and onto the gun handle (1). See Fig 13.
Fig 14
KEY
15
16
33
43
55e
Adjusting Nut
Trigger
Screw
ES Indicator Light
Pressing Tool
3.
Install the two socket head cap screws (44) and
tighten with the wrench (55c) supplied. See Fig 12.
Snap the ES indicator lights (43) in place over the
socket head cap screws.
4.
Insert the fluid tube (37) into gun barrel fluid inlet
and tighten fluid tube connector (FF). See Fig 16.
Torque to
1.1-1.4 Nm
(10-12 in-lb)
If the ball seat housing (11) was removed, insert
the pressing tool (55e) in the front of the gun and
gently push the needle back. See Fig 14. Slide the
trigger (16) into place and install the screws (33).
Then remove the tool. Press the trigger and install
trigger adjusting nut (15) to its previously noted position.
43
5.
6.
Install the ball seat housing (see page 18). Install the air cap, spray tip, and ring nut. Test the gun
resistance as instructed on page 16.
33
16
15
55e
Fig 12
307-726
19
SERVICE
Fluid Needle Replacement
1.
KEY
Remove the gun barrel as instructed on page 19.
If the power cartridge comes out, carefully press it
back into the handle.
2.
Insert the narrow end of the pressing tool (55e)
through the front of the gun to push the needle back,
then remove the nut (17) and the adjustment nut
(14a). See Fig 15.
3.
Press the needle assembly (14) out the front of
the gun as far as you can with a finger, or by pressing
it against a flat surface. Then use the wrench (55c) to
finish pushing it out. See Fig 16.
4.
Remove the nut (14a) from the new needle
assembly. Then install the new needle assembly
through the front of the gun. Insert the narrow end of
the pressing tool (55e) into the front of the gun and
press to seat the needle. See Fig 15.
5.
Install the new adjustment nut (14a), hex end
first, onto the needle.
6.
Use the pressing tool (55e) to press on the
needle from the front of the gun, then screw the
adjusting nut all the way to the bottom of the threads.
Remove the pressing tool.
7.
Screw the other nut (17) firmly against the
adjustment nut to lock them together.
8.
Reassemble the gun as described in
Reassembly.
14a
17
55e
17
14a
Adjustment Nut
Nut
Pressing Tool
Bottom of
thread
55e
Fig 15
KEY
FF
14
14a
17
37
37a
55c
Connector
Needle Assembly
Adjustment Nut
Nut
Fluid Tube
Washer
Wrench
Barrel
14a
55c
17
14
FF
37
37a
Fig 16
SERVICE
KEY
1
2
2a
2b
2c
4a
4b
4c
5
12
12b
Gun Body
Power Cartridge
Turbine Alternator
O-Rings
Plug
O-Ring
O-Ring
Spring
Gasket
Barrel
Cushion
12
4a
lubricate
4
lubricate
5
4c
4b
lubricate
2b
12b
See NOTE after
step 3, below.
1
NOTE: The power cartridge (2)
includes items 2a–2c,
and 4a–4c.
2a
2c
Fig 17
Power Cartridge Replacement
1. Remove the barrel as described under
Removal.
Barrel
2. Remove the gasket (5) from the gun. See Fig 17.
CAUTION
The power cartridge is fragile. Be careful when
handling it to avoid damage.
NOTE: The cushion (12b) is part of the gun barrel and
should never need to be removed. If it is
removed, push the cushion in, adhesive side
toward the barrel, with a rod until it is securely
adhered in the barrel. DO NOT use the power
supply (4) to press the cushion into the barrel as
it will not adhere properly.
4. Lightly lubricate the o-rings (2b, 4a, 4b) on the new
power cartridge with petroleum jelly. Insert the new
power cartridge in the gun body.
3. Grasp the power cartridge (2) with your hand. With a
gentle side to side motion, pull it free from the gun
body (1). Then pull the power cartridge straight out of
the body.
NOTE: See Fig 18 for proper alignment of the power cartridge (2) in the gun body (1).
CAUTION
DO NOT use solvents to clean the power cartridge
cavity in the gun body (1). Solvent will damage
electrical components contained in the power
cartridge.
6. Install the barrel on the gun body as described under
Barrel Removal.
5. Install the gasket (5) in the gun body (1).
KEY
1
2
Gun Body
Power Cartridge
Inspect the power cartridge cavity in the body for
dirt or moisture. Clean out the cavity with a clean,
dry rag if necessary. Moisture and other contaminants may damage electronic circuitry.
1
2
All o-rings (2b, 4a, 4b) and the compression spring
(4c) must be in place or the gun will malfunction.
Fig 18
307-726
21
SERVICE
Turbine Alternator Removal
Fan Air Valve Replacement
1. Remove the power cartridge (2) from the gun body
as described under
Power Cartridge
Replacement.
1. Place a wrench on the flats of the air valve housing
(48) and remove it from the gun body (1). See Fig 20.
Remove the retaining ring (38).
2. Carefully twist the turbine alternator (2a) counterclockwise and pull it off the power supply (4) until just
disengaged from the coupling. Then continue to
slowly pull the turbine alternator away from the
power supply, disconnecting the 3-wire connector
(HH). See Fig 19.
2. Rotate the fan adjusting screw (47) clockwise until it
is disengaged from the valve housing threads. Pull
the adjusting screw out of the valve housing (48).
3. Using an ohmmeter, test the coil in the turbine alternator (2a). With the ohmmeter set at R x 1 scale,
measure the resistance between the two outer terminals of the 3-wire connector (HH). 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 (HH) and the
turbine
alternator housing. The resistance should be infinite.
If the resistance is not infinite, replace the alternator.
5. Partially connect the 3-wire connector (HH) onto the
prongs inside the power supply (4). See Fig 19.
Using a small screwdriver, push the connector onto
the prongs until seated.
6. Slide the turbine alternator (2a) onto the power supply, being sure to align the coupling between the
power supply and the turbine alternator housing.
Then twist the turbine alternator clockwise to lock the
coupling.
7. Install the power cartridge in the gun body as
described under Power Cartridge Replacement.
3. Clean all the parts and inspect them for wear or damage. If replacing the seal (39), unscrew it clockwise
and remove it from the adjusting screw.
4. Apply medium grade thread sealant to the small
threads on the end of the adjusting screw (47) and
install a new seal (left hand thread).
5. When reassembling the fan air valve, lubricate the
o-ring (45) and the adjusting screw (47) threads with
petroleum jelly.
6. After the retaining ring (38) is installed on the adjusting screw (47), back the adjusting screw out of the
valve housing (48) until it bottoms out against the
retaining ring.
7. Apply PTFE paste to the threads of the valve housing (48) and install it in the gun body (1). Torque the
housing to 1.1 to 1.4 Nm (10 to 12 in-lb).
KEY
1
38
39
45
47
48
Gun Body
Retaining Ring
Valve Seal
O-Ring
Air Adjusting Screw
Air Valve Housing
1
KEY
HH
2a
4
3-Wire Connector
Alternator
Power Supply
39 38
2a
lubricate
HH
45
4
48
ApplyPTFE paste.
Torque to
1.1–1.4 Nm
(10–12 in-lb)
Fig 20
Fig 19
47
Apply med.
grade thread
sealant
SERVICE
Piston Removal and Repair
8. Install the new packing (19) and guide (18) in the gun
body (1); screw the guide in loosely.
1. To disconnect the fluid hose (37) from the cover plate
(32), screw the nut (FF) off the filter retainer (36). See
Fig 21.
NOTE: DO NOT fully tighten the guide (18) yet. The
guide must be loose to avoid damaging the packing (19) when pushing the piston shaft through
the guide.
2. Note the position of the trigger adjusting nut (15) for
reinstallation, then screw it off the piston shaft.
9. If replacing the u-cup packing (24), slide it onto the
piston (25) so the lips of the packing will face towards
the front of the gun when the piston is installed. Then
install the buna-N o-ring (22) and Viton o-ring (59) on
the piston.
3. Remove the screws (31) and lock washers (60) from
the cover plate (32). Remove the cover plate (32),
spring (27), and retainer cap (26).
4. Unscrew and remove the air valve guide (18) and
needle packing (19) from the gun body (1),
10. Install the piston assembly into the gun body (1),
being careful not to damage the piston’s lip seal.
5. Push on the end of the piston shaft, and remove the
piston assembly.
11. Install the retainer cap (26) into the cover plate (32).
NOTE: DO NOT remove the u-cup packing (24) from the
piston shaft except to replace it as removal will
damage this packing.
12. Install the cover plate (32), spring (27), and retainer
cap (26) with the screws (31) and lock washers (60).
13. Actuate the trigger and tighten the air valve guide
(18) with a wrench.
6. Clean and inspect parts for wear or damage.
Replace parts as needed.
14. Screw the trigger adjusting nut (15) onto the piston
shaft to its previously noted position.
7. When reassembling the piston assembly , lubricate
the o-rings (22 & 59) and the u-cup packing (24) on
the piston (25) with petroleum jelly. Pack the spring
(27) with petroleum jelly. Apply PTFE tape to the air
valve guide (18).
15. Connect the fluid hose (37) to the filter retainer (36).
KEY
FF
1
15
18
19
22
24
25
26
27
31
Nut
Gun Body
Trigger Adjusting Nut
Air Valve Guide
Needle Packing
Buna-N O-Ring
32
36
37
59
60
U-Cup Packing
Piston
Retainer Cap
Spring
Screws
Cover Plate
Filter Retainer
Fluid Tube
Viton O-Ring
Lock Washers
lubricate
1
25
lubricate
24
26
59
32
36
27
22
lubricate
Apply
PTFE
31
tape
18
15
Pack with
lubricant
60
19
37
FF
Fig 21
SERVICE
Disc Regulator O-Ring Replacement
1. Unscrew the turbine air line from the adapter (67).
2. Remove the cap screw (71) and washer (70) from the
gun body (1). See Fig 22.
KEY
1
30
66
67
68
69
70
71
Gun Body
Regulator Disk
O-Ring
Adapter
O-Ring
Air Valve
Washer
Cap Screw
67
3. Pull the adapter (67), with the air valve (69), out of the
gun body.
30
4. Unscrew the adapter (67) from the air valve (69), and
remove the disk regulator (30).
lubricate
66
69
lubricate
68
1
5. Clean and inspect parts for wear or damage and
replace if necessary.
70
6. Clean and inspect the two o-rings (68) and one o-ring
(66) on the air valve. Replace if necessary. Lubricate
the o-rings with petroleum jelly.
71
7. Install the disc regulator (30) into the air valve (69) so
its beveled surface faces into the gun.
8. Screw the adapter (67) into the air valve (69), and
install the air valve into the gun body (1).
9. Screw the cap screw (71), with the washer (70), into
the gun body.
10. Screw the turbine air line onto the adapter (67).
Muffler Replacement
Fig 22
KEY
1
21
46
49
Gun Body
Muffler
Elbow
Tube
1
1. Remove the fan air valve assembly as instructed in
Fan Air Valve Replacement.
49
2. Remove the elbow (46) with the tube (49) from the
gun body (1). See Fig 23.
21 46
3. With a hook, remove the muf fler (21) from the gun
housing and replace with a new muffler.
4. Install the elbow (46) in the gun housing.
5. Install the fan air valve assembly as instructed in Fan
Air Valve Replacement.
Fig 23
24
307-726
KITS
Repair Kits must be purchased separately.
Use only GENUINE GRACO PARTS AND ACCESSORIES.
WARNING
When servicing, use only genuine Graco replacement parts. Use of other parts or any alteration or
modification of this equipment could cause electrostatic shock, fire, or explosion, and result in serious
injury or property damage.
NOTE: The Ref. Nos. shown in the kits below correspond to the reference numbers used in the parts list on page 27. For
the best results, use all the parts in the kit, even if the old parts still look good.
High Air Flow Restrictor Kit 220–493
Optional Air Cap 220–535
Use with standard air cap 223–167. Includes:
MUST be used with Low Air Flow Restrictor Kit
223–830, at left. Must order separately.
Ref
No.
Part No.
Description
100
101
102
179–994
107–414
100–172
RESTRICTOR
SPRING, compression
BALL; 3/16” diameter
Qty
2
2
2
Low Air Flow Restrictor Kit 223–830*
Includes:
Ref
No.
Part No.
Description
100
101
102
180–763
107–414
100–172
RESTRICTOR
SPRING, compression
BALL; 3/16” diameter
*MUST also order Air Cap 220–535.
101
100
Qty
2
2
2
Spray Gun Repair Kit 220–115
Includes:
Ref
No.
Part No.
Description
2b
4a
4b
5
19
22
24
30
37a
45
59
107–106
177–156
106–555
179–387
106–901
156–454
181–039
107–107
164–769
103–557
108–298
O–RING, buna-N
O–RING, Viton
O–RING, fluorocarbon
GASKET, housing
PACKING, needle, PTFE
O-RING; buna-N
U-CUP; UHMW polyethylene
REGULATOR, disc
WASHER, PTFE
O–RING, Viton
O-RING; Viton
Qty
2
1
1
1
1
1
1
1
3
1
1
102
MANUAL CHANGE SUMMARY
The manual was changed from Rev. S to Rev. T to delete
spray tip 219–407 from the SPRAY TIP SELECTION
CHART.
307-726
25
26
307-726
4c
4b
55f
8
12b
4
9
55c
55b
Ref No 55, Tool Kit
Includes items 55a–55f
55e
10
10a
55a
55d
Includes items
2a–2c & 4
11
4a
18
42
14
19
12
REF 25
2b
2c
12a
15
2a
Ref No. 2
Power Cartridge
Screw in restrictors
flush with surface
of gun handle
66
37a
6
63
67
30
5
64
69
21
68
37
20
29
43
44
14a 17
38
70
1 65
REF 14
39
7
23
71
48
45
37a
46
32
31
36
49
REF 32
47
60
59
35
22
24
34
25
27
26
PARTS DRAWING
PARTS LIST
REF
NO.
PART NO.
DESCRIPTION
1
2
218–927
218–111
2a
217–591
2b*
2c
4
107–106
180–070
218–041
4a*
4b*
4c
5*
6**
7
8
9
10
177–156
106–555
178–504
179–387
179–790
110–916
218–695
223–167
219–415
10a
11
183–459
220–613
12
220–963
12a
12b
13**
14
14a
15
16
17
18
19*
20
21
22*
23
24*
176–921
186–127
179–791
218–697
176–938
180–927
180–928
105–689
176–941
106–901
108–173
181–223
156–454
107–208
181–039
25
26
27
29
30*
218–989
181–178
108–221
181–599
107–107
BODY, gun
1
POWER CARTRIDGE; Includes
items 2a and 4
1
S ALTERNATOR, turbine; Includes
items 2b & 2c
1
SS O–RING, buna–N
2
SS PLUG
1
S POWER SUPPLY; Includes
items 4a to 4c
1
SS O–RING; Vitonr
1
SS O–RING; fluorocarbon
1
SS SPRING, compression
1
GASKET, housing
1
LABEL, warning
1
SCREW, set; 1/4–20
1
NUT, retaining, air cap
1
AIR CAP
1
SPRAY TIP, fluid; 0.381 mm (0.015”)
Includes item 10a. See page 31
for other part numbers
1
S WASHER, non-metallic
1
HOUSING, ball seat;
(includes resistor)
1
BARREL, gun; Includes items
12a & 12b
1
S PLUG, M3 x 0.5 x 6
1
S CUSHION
1
TAG, warning (not shown)
1
NEEDLE, fluid; Includes item 14a 1
S NUT, adjustment
1
NUT, adjustment. trigger
1
TRIGGER
1
NUT, mach, hex
1
GUIDE, valve, air
1
PACKING, needle, PTFE r
1
ELBOW, male
2
MUFFLER
1
O-RING; buna-N
1
NUT, ferrule; 5/8–20 UN–2B
2
PACKING, u-cup;
UHMW polyethylene
1
PISTON, shaft
1
CAP, retainer, spring
1
SPRING, compression
1
PLUG; 3/8–18 npsm
1
REGULATOR, disc
1
QTY
REF
NO.
PART NO.
DESCRIPTION
31
100–205
32
34
35
36
37
180–924
180–706
205–264
180–728
220–225
37a*
38
39
42
43
44
164–769
105–681
181–383
179–994
218–179
107–100
45*
46
47
48
49
53**
103–557
181–594
180–714
180–713
054–134
180–060
55
55a
55b
55c
55d
55e
55f
59*
60
62**
220–614
105–749
177–732
107–460
218–751
181–095
183–107
108–298
108–340
180–063
63
64
65
66
67
68
69
70
71
177–128
107–400
104–282
105–796
181–598
103–648
181–597
102–782
105–408
SCREW, mach, pnh;
6–32 UNC–2a x 0.5
4
PLATE, cover
1
CONNECTOR, fluid
1
FILTER, tip, 0.005
1
RETAINER, filter
1
TUBE, fluid, nylon;
Includes item 37a
1
S WASHER, PTFE
2
RING, retaining, external
1
SEAL, valve
1
RESTRICTOR
2
LIGHT, indicator, ES
2
SCREW, cap, socket hd;
M5 x 0.8 x 12
2
O-RING, Viton; color-coded green 1
1
ELBOW, male, 90_
SCREW, adjusting
1
HOUSING, valve
1
TUBE; polyethylene
178 mm
SIGN, warning, English
(not shown)
1
TOOL KIT; Includes items 55a–55f 1
S BRUSH, cleaning
1
S WRENCH, nut, packing
1
S WRENCH, barrel
1
S ELECTRODES, box of 10
1
S INSERT
1
S WRENCH, ball seat housing
1
O-RING; Viton
1
LOCK WASHER, internal
4
SIGN, warning, Spanish
(not shown)
1
SPACER
2
SCREW, trigger
2
O–RING; buna-N
1
O-RING; Viton
1
ADAPTER; 1/4–18 npsm, LH
1
O-RING; Viton
2
1
VALVE, air
WASHER, plain
1
SCREW, cap, hex hd; M6 x 10 long 1
QTY
*Included in Repair Kit 220–115. See page 25.
**Extra warning tags, labels, and signs are available at no
charge from Graco.
WARNING
When servicing, use only genuine Graco replacement parts. Use of other parts or any alteration or
modification of this equipment could cause electrostatic shock, fire, or explosion, and result in serious
injury or property damage.
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.
AIR LINE ACCESSORIES
GROUNDED AIR SUPPLY HOSE
FM Approved
7 bar (100 psi) MAXIMUM WORKING PRESSURE
8 mm (0.315 in.) ID; 1/4 npsm(f) x 1/4 npsm(f) LH;
Color coded black
Part No.
Length
220–444
218–100
218–101
218–102
218–103
220–119
220–120
6 ft (1.8 m)
15 ft (5 m)
25 ft (8 m)
36 ft (11 m)
50 ft (15 m)
75 ft (23 m)
100 ft (30.5 m)
GROUNDED AIR SUPPLY HOSE
FM Approved
7 bar (100 psi) MAXIMUM WORKING PRESSURE
8 mm (0.315 in.) ID; 1/4 npsm(f) x 1/4 npsm(f) LH;
Color coded gray; More flexible than black hose
Part No.
Length
223–068
223–069
223–070
223–071
223–072
223–073
223–074
6 ft (1.8 m)
15 ft (5 m)
25 ft (8 m)
36 ft (11 m)
50 ft (15 m)
75 ft (23 m)
100 ft (30.5 m)
Grounded Air Supply Hose
100 psi (7 bar) MAXIMUM WORKING PRESSURE
8 mm (0.315 in.) ID; 1/4 npsm(f) x 1/4 npsm(f) LH;
Color coded red; Stainless steel braid ground path
Part No.
Length
235–068
235–069
235–070
235–071
235–072
235–073
235–074
1.8 m (6 ft)
5 m (15 ft)
8 m (25 ft)
11 m (36 ft)
15 m (50 ft)
23 m (75 ft)
30.5 m (100 ft)
3-WAY AIR VALVE 722–502
AIR ADAPTER NIPPLE 185–493
For connecting two or more grounded gun air supply
hoses. 1/4 npt x 1/4 npsm LH
AIR SHUTOFF VALVE 224–754
10 bar (150 psi) MAXIMUM WORKING PRESSURE
For turning air to gun off or on.
1/4 npsm(m) LH x 1/4 npsm(f) LH
HIGH VOLUME AIR REGULATOR 206–199
0–9 bar (0–125 psi) Regulated Pressure
14 bar (200 psi) Steel Pressure Gauge
1/2 npt(f) inlet and outlet
AIR PRESSURE REGULATOR 104–267
20 bar (300 psi) MAXIMUM WORKING PRESSURE
1/2 npt(f) inlet and outlet
AIR PRESSURE GAUGE 101–180
0–14 bar (0–200 psi) Regulated Pressure
AIR FILTER/MOISTURE SEPARATOR
17.5 bar (250 psi) 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
106–148
106–149
3/8 npt(f)
1/2 npt(f)
AIR LINE LUBRICATOR
17.5 bar (250 psi) MAXIMUM WORKING PRESSURE
214–847 3/8 npt(f)
214–848 1/2 npt(f)
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
ACCESSORIES
FLUID LINE ACCESSORIES
GUN MOUNTING ACCESSORIES
FLUID HOSE ASSEMBLIES
FM Approved
207 bar (3000 psi) MAXIMUM WORKING PRESSURE
Nylon tube, Urethane Cover
UNIVERSAL GUN MOUNTING ROD 590–236
Part No. ID
Length
214–700
214–701
214–699
214–698
214–697
214–638
214–635
214–636
4.8 mm (3/16 in)
4.8 mm (3/16 in)
4.8 mm (3/16 in)
4.8 mm (3/16 in)
4.8 mm (3/16 in)
6.4 mm (1/4 in)
6.4 mm (1/4 in)
6.4 mm (1/4 in)
0.61 m (2 ft)
0.91 m (3 ft)
1.8 m (6 ft)
7.6 m (25 ft)
15.2 m (50 ft)
0.4 m (14 in)
0.6 m (2 ft)
0.9 m (3 ft)
214–629
210–540
210–541
6.4 mm (1/4 in)
6.4 mm (1/4 in)
6.4 mm (1/4 in)
Thread Size
1/4 npsm(f)
1/4 npsm(m x f)
1/4 npsm(f)
1/4 npsm(f)
1/4 npsm(f)
1/4 npsm(f)
1/4 npsm(f)
1/4 npsm(f) x
1/4 npt(m)
4.6 m (15 ft) 1/4 npsm(f)
7.6 m (25 ft) 1/4 npsm(f)
15.2 m (50 ft) 1/4 npsm(f)
FLUID FILTERS
207 bar (3000 psi) MAXIMUM WORKING PRESSURE
Part No.
Description
214–570
218–029
With aluminum bowl and support
With carbon steel bowl and support
STAINLESS STEEL SCREENS
RECIPROCATING GUN MNTG. BRACKET 725–973
Note: All safety barriers and interlocks are to be
supplied by the customer.
STATIONARY GUN MOUNTING STAND 722–562
STATIONARY GUN MOUNTING BRACKET 724–344
PUMP & SPRAY SYSTEM ACCESSORIES
10:1 RATIO MONARK PUMP 217–523
66 bar (950 psi) MAXIMUM WORKING PRESSURE
PUMP SUCTION HOSE 214–960
PAIL SUCTION TUBE 165–767
DRUM SUCTION TUBE 206–266
CART 208–210
WALL BRACKET 206–220
ELECTROSTATIC SYSTEM 231–037
Includes items:
Part No.
Description
167–024
167–025
167–026
167–027
595 micron (30 mesh)
250 micron (60 mesh)
149 micron (100 mesh
74 micron (200 mesh)
Part No.
Description
218–928
FILTER DRAIN VALVE /FLUID SHUT-OFF VALVE
350 bar (5000 psi) MAXIMUM WORKING PRESSURE
Install in outlets for individual fluid line control or install in
bottom of filter bowl as fluid drain valve.
Part No.
Description
214–698
Automatic E/S Air-Assisted Airless
Spray Gun
Grounded Air Supply Hose, 7.6 m
(25 ft.) See page 28 for specifications
Fluid Hose, 7.6 m (25 ft.)
See above for specifications
Air Filter, 3/8 npt
210–657
210–658
210–659
214–037
1/2 npt(m), Viton seals
3/8 npt(m), Viton seals
3/8 x 1/4 npt(m), Viton seals
1/4 npt(m), PTFE seals
SST FLUID PRESSURE REGULATOR 222–121
105 bar (1500 psi) MAXIMUM FLUID INLET PRESSURE
10.5–84 bar (150–1200 psi) REGULATED PRESSURE
SST FLUID PRESSURE REGULATOR 217–576
0–70 bar (0–1000 psi) REGULATED PRESSURE
PARTS TO CONVERT STANDARD FLUID
PRESSURE REGULATOR 206–661
to 70 bar (1000 psi) Maximum Working Pressure
Part No.
Description
501–511
101–696
Compression Spring
Fluid Pressure Gauge
0–70 bar (0–1000 psi) range
218–101
106–148
ELECTROSTATIC SYSTEM 231–038
Includes items:
Part No.
Description
218–928
Automatic E/S Air-Assisted Airless
Spray Gun
Grounded Air Supply Hose, 15 m
(50 ft) See page 28 for specifications
Fluid Hose, 15 m (50 ft)
See above for specifications
Air Filter, 3/8 npt
218–103
214–697
106–148
ACCESSORIES continued on page 30
ACCESSORIES
MISCELLANEOUS ACCESSORIES
REMOTE FAN AIR ADAPTER 181–053
To control fan pattern from the control booth.
1/8–27 npt(f).
Must also order: 108–234 90 Elbow; 1/8 npt(m)
REMOTE SWITCH & SIGNAL LIGHT 728–386
PAINT RESISTANCE METER 722–886
Used with 722–860 Paint Probe to measure resistance of
paint. Not for use in Hazardous areas.
PAINT PROBE 722–860
Used with 722–886 Paint Resistance Meter to measure
resistance of paint. Not for use in Hazardous areas.
SAFETY WARNING SIGNS
FM Approved
Available at no charge from Graco.
Must be ordered separately.
Part No.
Description
180–060
180–061
180–062
180–063
Warning Sign (English)
Warning Sign (French)
Warning Sign (German)
Warning Sign (Spanish)
MEGOHMMETER 218–979
500 Volt output; 0.01–2000 megohms.
Not for use in Hazardous areas.
GUN HIGH VOLTAGE PROBE & METER 217–452
For direct measurement of gun output voltage.
GROUNDING CLAMP AND WIRE 222–011
12 ga, 7.6 m (25 ft) wire
ELECTRODE WIRES 218–751
Box of 10 replacement electrode wires for spray tip.
COMPRESSION SPRING 105–673
For increased shut-off force when spraying plural
component materials.
105–673
58 mm
(2.29 in.)
198.8 mm
(3.89 in.)
f13.5 mm
Cylinder Air Inlet
1/4 npt
SIDE VIEW
143 mm
(5.63 in.)
Atomizing Air Inlet
1/4 npt
311 mm
(12.25 in.)
TOP VIEW
116.2 mm
(4.58 in.)
81 mm
(3.19 in.)
56 mm
(2.21 in.)
14 mm
(0.55 in.)
BACK VIEW
6.5 mm
(0.25 in.)
36 mm
(1.42 in.)
33.5 mm
(1.32 in.)
20 mm
(0.79 in.)
41.7 mm
(1.64 in.)
93 mm
(3.66 in.)
Fluid Inlet
3/8 npsm
ES Air Inlet
1/4 npsm LH
DIMENSIONAL DRAWING
307-726
31
SPRAY TIP SELECTION CHART
Fan Width at
300 mm (12 in.)
Orifice Size
mm (in.)
mm (in.)
ml/min (fl oz/min)
219–107
50–100 (2–4)
0.178 (0.007)
100 (3.4)
219–207
100–150 (4–6)
219–307
150–200 (6–8)
219–209
100–150 (4–6)
0.229 (0.009)
200 (6.8)
219–309
150–200 (6–8)
219–409
200–250 (8–10)
219–211
100–150 (4–6)
0.279 (0.011)
300 (10.1)
219–311
150–200 (6–8)
219–411
200–250 (8–10)
219–511
250–300 (10–12)
219–611
300–350 (12–14)
219–213
100–150 (4–6)
0.330 (0.013)
400 (13.5)
219–313
150–200 (6–8)
219–413
200–250 (8–10)
219–513
250–300 (10–12)
219–613
300–350 (12–14)
219–215
100–150 (4–6)
0.381 (0.015)
500 (16.9)
219–315
150–200 (6–8)
219–415
200–250 (8–10)
219–515
250–300 (10–12)
219–615
300–350 (12–14)
219–217
100–150 (4–6)
0.432 (0.017)
700 (23.7)
219–317
150–200 (6–8)
219–417
200–250 (8–10)
219–517
250–300 (10–12)
219–617
300–350 (12–14)
Part Number
Light to Medium
Viscosity*
Heavy Viscosity
liters/min ((fl oz/min)
500 (16.9)
SPRAY TIP SELECTION CHART
Part Number
Fan Width at
300 mm (12 in.)
Orifice Size
Light to Medium
Viscosity*
Heavy
Viscosity*
mm (in.)
mm (in.)
ml/min (fl oz/min)
liters/min ((fl oz/min)
0.483 (0.019)
800 (27.0)
600 (20.3)
0.533 (0.021)
1000 (33.8)
800 (27.0)
0.584 (0.023)
1200 (40.6)
970 (32.8)
0.635 (0.025)
1500 (50.7)
1200 (40.6)
219–319
150–200 (6–8)
219–419
200–250 (8–10)
219–519
250–300 (10–12)
219–619
300–350 (12–14)
219–719
350–400 (14–16)
219–421
200–250 (8–10)
219–521
250–300 (10–12)
219–621
300–350 (12–14)
219–721
350–400 (14–16)
219–821
400–450 (16–18)
219–423
200–250 (8–10)
219–523
250–300 (10–12)
219–623
300–350 (12–14)
219–723
350–400 (14–16)
219–823
400–450 (16–18)
219–425
200–250 (8–10)
219–525
250–300 (10–12)
219–625
300–350 (12–14)
219–725
350–400 (14–16)
219–825
400–450 (16–18)
*Fluid Output at 41 bar (600 psi).
The fluid output (Q) at other pressures (P) can be calculated by this formula: Q= (0.041) (QT) ( P )
Where QT = Fluid output (fl oz/min) from the above table
for the selected orifice size.
NOTE: Other tips are available on special work order. Allow 4 to 6 weeks for delivery. The maximum orifice size is 0.635 mm (0.025 in.).
Spray Tip Selection Chart continued on next page.
SPRAY TIP SELECTION CHART
Round Pattern Kits
Kit
Part No.
34
Spray–Tip
Part No.
Kit
Tip Size
in. (mm)
222–603
222–151
0.017 (0.432)
222–604
222–152
0.011 (0.279)
222–605
222–153
0.013 (0.330)
222–606
222–154
0.015 (0.381)
224–045
222–159
0.009 (0.229)
307-726
(see chart)
218–695
185–483
(not included)
(included with tip)
Spray Tip
(see chart)
185–568
183–906
NOTES
307-726
35
TECHNICAL DATA
Gun weight . . . . . . . . . . . . . . . . . . . . . . . 0.87 Kg (1.90 lb)
Gun length . . . . . . . . . . . . . . . . . . . . . 310 mm (12.25 in.)
Maximum working fluid pressure . . . . 66 bar (950 psi)
Maximum working air pressure . . . . . . . . 7 bar (100 psi)
Voltage operating range . . . . . . . . . . . . . . . . . 0 to 75 kV
Air inlets
Turbine . . . . . . . . . . . . . . . . . . . . . . 1/4 npsm(m) L.H.
Atomizing & Cylinder . . . . . . . . . . . . . . . . 1/4 npt(m)
Fluid inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . 3/8 npsm(m)
Wetted parts . . . . . . . Stainless Steel, Acetal, UHMW
Polyethylene, Nylon, Carbide,
PTFE , Delrin
PTFE , Viton, and Delrin
THE GRACO WARRANTY AND DISCLAIMERS
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 from the date of sale, repair or replace any part of the
equipment proven defective. This warranty applies only when the equipment is installed, operated and maintained in
accordance with Graco’s written 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 claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge
any defective parts. The equipment will be returned to the original purchaser transportation prepaid. If inspection of the
equipment does not disclose any defect in material or workmanship, repairs will be made at a reasonable charge, which
charges may include the costs of parts, labor and transportation.
DISCLAIMERS AND LIMITATIONS
The terms of this warranty constitute purchaser’s sole and exclusive remedy and are in lieu of any other warranties (express or implied), including warranty of merchantability or warranty of fitness for a particular purpose, and of any
non–contractual liabilities, including product liabilities, based on negligence or strict liability. Every form of liability for
direct, special or consequential damages or loss is expressly excluded and denied. In no case shall Graco’ s liability
exceed the amount of the purchase price. Any action for breach of warranty must be brought within two (2) years of the
date of sale.
EQUIPMENT NOT COVERED BY GRACO WARRANTY
Graco makes no warranty, and disclaims all implied warranties of merchantability and fitness for a particular purpose, with respect to accessories, equipment, materials, or components sold but not manufactured by Graco. These
items sold, but not manufactured by Graco (such as electric motor, switches, hose, etc.) are subject to the warranty, if
any, of their manufacturer. Graco will provide purchaser with reasonable assistance in making any claim for breach of
these warranties.
GRACO PHONE NUMBERS
TO PLACE AN ORDER, contact your Graco distributor,
or call Graco: 1–800–328–0211 Toll Free
FOR TECHNICAL ASSISTANCE, service repair information or answers about the application of Graco equipment, call: 1–800–543–0339 Toll Free
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. 307–726 8–85 Revised 1–93

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