Graco Inc Paint Sprayer 224 094 User Manual

INSTRUCTIONS–PARTS LIST  
308–084  
Rev. H  
This manual contains IMPORTANT  
ARNINGS AND INSTRUCTIONS  
READ AND RETAIN FOR REFERENCE  
Supersedes  
G
W
Model PRO 4600SC  
t
AUTOMATIC ELECTROSTATIC  
AIR SPRAY GUN  
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)  
0432  
Part No. 235–893, Series A  
Air Spray Gun, with standard shroud  
Part No. 235–894, Series A  
Part No. 235–893 shown  
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  
.
0435  
For use with Class  
I
, Group D paint spray materials  
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441  
E
COPYRIGHT 1991 GRACO INC.  
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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:  
6. All persons entering the spray area: shoes must have con  
-
ductive soles, such as leather, or personal grounding straps  
must be worn. Rubber or plastic soles are not conductive.  
S
All parts of the electrostatic system are properly grounded.  
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.  
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 paint containers, wash cans and tools, are properly  
grounded.  
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.  
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 suffi-  
cient energy levels can ignite the fluid being sprayed, fumes  
from solvents, dust particles, and other flammable substances.  
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.  
This can cause a fire, explosion, or electrostatic shock and re  
sult in serious bodily injury and property damage.  
-
Flushing and Cleaning Safety  
To reduce the risk of static sparking or splashing, always follow  
the Pressure Relief Procedure on page 2 before flushing.  
Static electricity can also be generated by the flow of  
through the pump, hose, gun, and nozzle, but it is dissipated  
through proper grounding as described in Grounding below  
fluid  
.
Be sure the turbine air (electrostatics) is OFF before flush  
ing or cleaning any part of the spray system.  
-
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.  
Use the lowest possible pressure to flush. Trigger the gun into  
grounded metal waste container  
a
.
To flush or purge equipment, ALWAYS use solvents with a flash  
point equal to or greater than that of the fluid being sprayed.  
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.  
To clean the exterior of the equipment, ALWAYS use solvents  
with a flash point of higher than 100_ F (38_ C).  
ALWAYS remove all solvent from the system before reactivating  
the spray gun.  
1. Pump: ground by using a ground wire and clamp as  
described in your separate pump instruction manual.  
Use only non-sparking tools to clean residue from the booth and  
hangers.  
2. Air compressors and hydraulic power supplies: ground  
according to the manufacturer  
s recommendations.  
Ventilate the Spray Booth  
To prevent hazardous concentrations of toxic and/or flammable  
vapors, spray only in a properly ventilated spray booth.  
3. Electrostatic Air Spray Gun: obtain grounding through con  
-
nection 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.  
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.  
4. Object being sprayed: keep the work piece hangers clean  
and grounded at all times. Contact points must be sharp  
points or knife edges.  
NEVER operate the spray gun unless the ventilating fans are  
operating.  
5. All electrically conductive objects or devices in the spray  
area, including paint containers and wash cans, must be  
properly grounded.  
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.  
308-084  
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TABLE OF CONTENTS  
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Installation  
2
4
Service  
Flush the Gun and Relieve Pressure  
Remove Gun from Manifold & Mounting Bracket 18  
Air Cap/Nozzle/Resistor Stud Replacement . . . . 19  
Electrode Replacement . . . . . . . . . . . . . . . . . . . . . 20  
Barrel Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21  
Barrel Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 22  
Fluid Packing Rod Removal and Repair . . . . . . . 23  
Power Supply Removal and Replacement . . . . . 25  
Power Supply Adjustment . . . . . . . . . . . . . . . . . . . 25  
Turbine Alternator Removal and Replacement 25  
.
. . . . . . . . . 18  
.
.
Typical Installation  
Warning Signs  
Ventilate the Spray Booth  
Install the Gun Controls and Display Module  
Install the Gun Mounting Bracket  
Install the Gun and Manifold  
Connect the Air, Fluid, and Fiber Optic Lines  
Check the Electrical Grounding  
.
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5
5
6
6
6
6
6
8
8
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Service Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26  
Gun Parts Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . 28  
Gun Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29  
Manifold Parts Drawing & List . . . . . . . . . . . . . . . . 30  
PRO 4600HC Conversion Kit . . . . . . . . . . . . . . . . . 31  
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32  
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35  
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . Back Cover  
Graco Phone Numbers . . . . . . . . . . . . . . Back Cover  
.
Install the Fabric Cover  
.
.
Operation  
Operating Checklist  
Selecting a Fluid Nozzle and Air Cap  
Gun Functions  
Activating the Fluid Trigger Only  
Adjusting the Spray Pattern  
Adjusting the Turbine Air Pressure  
.
. . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . . . . . .  
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
. . . . . . . . . . . . . .  
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9
9
9
9
9
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.
. . . . . . . . . . . 10  
Activating the Voltage Select (KV HI/LO)  
.
. . . . . . 10  
.
Maintenance  
Daily Care and Cleaning  
Clean the Air Cap and Fluid Nozzle  
Check for Fluid Leakage  
.
. . . . . . . . . . . . . . . . . . . . 10  
. . . . . . . . . . . 11  
. . . . . . . . . . . . . . . . . . . . 12  
.
.
.
Troubleshooting  
TERMS  
Spray Pattern Troubleshooting Chart  
Gun Operation Troubleshooting Chart  
Electrical Troubleshooting Chart  
.
. . . . . . . . . 13  
. . . . . . . . 14  
. . . . . . . . . . . . . 15  
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.  
Electrical Tests  
Test Gun Resistance  
.
. . . . . . . . . . . . . . . . . . . . . . . 16  
Test Power Supply Resistance  
Test Resistor Stud Resistance  
.
.
. . . . . . . . . . . . . . . 16  
. . . . . . . . . . . . . . . 17  
NOTE:  
Identifies essential procedures or helpful  
information.  
4
308-084  
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TYPICAL INSTALLATION  
Hazardous Area  
BASIC SYSTEM  
Non-Hazardous Area  
Grounded Turbine Air Hose (gray hose)  
P/N 223–068/–074  
Controls Cabinet  
KV Hi/Lo Air Line (if low KV setting option is desired)  
Gun Manifold  
P/N 224–094  
PRO 4600 Gun  
P/N 224–224  
(gun only, see  
Shut-off device  
Fan  
Atom Air Lines  
for fluid only  
operation  
Manual 308–084 for  
gun/shroud P/N)  
Trigger Module  
P/N 235–768  
Bleed valve or  
3 way solenoid  
Air Regulator  
Cylinder Air Line  
Recip. Mount Assy  
.
P/N 235–094  
Fluid Supply  
True  
Earth  
Ground  
Fig  
1
Controls Cabinet  
SYSTEM OPTIONS  
24V Power Supply  
P/N 235–301  
S Spraying  
S Air Pilot Fluid Regulator  
Voltage Monitor  
Fiber Optic Cable  
P/N 224–680/–686  
Fiber Optic Cable  
P/N 224–670/–676  
Bulkhead  
P/N 224–261  
ES Display Module  
P/N 224–117  
Air Pressure  
Control  
Air Pilot Fluid Regula  
tor  
-
Fluid Supply  
P/N 224–531  
Non-Hazardous Area  
Hazardous Area  
01769  
Fig  
2
Installing the System  
Warning Signs  
Fig 1 , above, shows a typical Model 4600 system. Fig  
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 avail-  
2
shows some possible system options. For assistance  
in designing a system that is customized for your applica  
tion, contact your Graco representative.  
-
able at no charge. See the ACCESSORIES section to or  
-
der them.  
308-084  
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INSTALLATION  
2.3 in.  
(58 mm)  
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.  
PRO 4600 Gun  
with Standard Shroud  
P/N 235–893  
D Do not install or service this equipment unless  
you are trained and qualified.  
12 in.  
(304 mm)  
D Be sure your installation complies with National,  
State and Local codes for the installation of elec  
-
trical apparatus in a Class  
Location.  
I, Group D Hazardous  
BACK MOUNTING POSITION  
01876  
Fig  
4
D Check and follow all local safety and fire codes,  
NFPA 33, NEC 504 and 516, and OSHA standard  
1910.107.  
Install the Gun and Manifold (See Fig 5 )  
1. Remove the air cap nut/air cap assembly and slide  
the shroud off the gun.  
Ventilate the Spray Booth  
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.  
WARNING  
To prevent hazardous concentrations of toxic and/or  
flammable vapors, spray only in a properly venti-  
lated spray booth. Never operate the spray gun  
unless ventilation fans are operating.  
3. Slide the gun and manifold along the dovetail until the  
button head screw bottoms against the mounting  
bracket.  
Electrically interlock the gun air supply with the ventila-  
tors to prevent gun operation without ventilating fans op  
erating. Check and follow all National, State, and Local  
codes regarding air exhaust velocity requirements.  
-
4. Secure the gun to the mounting bracket with the but  
ton head screw , using the ball end wrench (46).  
Tighten the two mounting bracket setscrews.  
-
High velocity air exhaust will decrease the operating effi-  
ciency of the electrostatic system. The minimum allow-  
able air exhaust velocity is 60 feet/minute (19 linear  
meters/minute).  
5. Slide the shroud onto the gun and secure it by tight  
-
ening the air cap nut onto the gun barrel. Tighten the  
nut just enough so that the air cap is snug but can still  
be turned.  
Install the Gun Mounting Bracket  
Connect the Air, Fluid, and Optional Fiber  
Attach the mounting bracket to the robot or reciprocator  
.
Optic Lines (See Fig 6 )  
See the ACCESSORIES section for the mounting brack  
-
WARNING  
et and mount extension options and refer to Fig 3 and  
Fig 4 for mounting positions.  
To reduce the risk of electrostatic shock or other  
serious injury, the turbine air supply hose must be  
electrically connected to a true earth ground. Use  
Only Graco Electrically Conductive Air Supply  
Hose and connect the hose ground wire to a true  
earth ground.  
2.3 in.  
(58 mm)  
PRO 4600 Gun  
with Slotted Shroud  
P/N 235–894  
See the ACCESSORIES section to order Graco Electri  
-
cally Conductive Air Supply Hose. This hose and the gun  
have special left-hand threads to prevent connecting  
another type of air supply hose to the gun turbine air inlet.  
8.8 in.  
(235 mm)  
Connect the air, fluid, and optional fiber optic lines to the  
gun manifold as shown in Fig 6 . Before connecting the  
fluid line, blow it out with air and flush it with solvent. Use  
solvent that is compatible with the fluid being sprayed.  
01876  
FRONT MOUNTING POSITION  
Fig 3  
6
308-084  
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INSTALLATION  
To ensure a dry, clean air supply to the gun, install an air  
line filter and an air and water separator on the air lines.  
Dirt and moisture can ruin the appearance of your fin-  
ished workpiece and can cause the gun to malfunction. A  
combination air filter/moisture separator is shown in the  
ACCESSORIES section.  
Socket Head  
Cap Screws  
Mounting  
Plate  
Dovetail  
Manifold  
O-Ring  
Spray Gun  
Set Screws  
Shroud  
Mounting  
Block  
Hex Head  
Cap Screws  
Button Head  
Screw  
Square Head  
Set Screw  
01877  
BACK VIEW OF MANIFOLD  
INSTALLED ON  
M
OUNTING BRACKET  
Air Cap/Air  
Cap Nut  
0453  
Set Screw  
Fig  
5
Connect 4’ of  
1/4” ID tube  
Connect 1/4” OD tube between  
fitting and control module  
Connect Graco Fiber Optic  
Cable (see Accessories)  
Connect Graco Grounded Air Hose  
between fitting & control module  
(left-hand thread). Connect the  
ground wire on the air hose to a true  
earth ground.  
TURBINE  
F.O.  
EXH  
MAX WRP  
AIR AND FLUID  
Connect 3/8” OD tube between  
fitting and control module  
KV  
HI/LO  
Connect 3/8” OD tube between  
fitting and control module  
100 PSI (7 BAR)  
ATOM  
FAN  
Connect a 1/4” npsm swivel  
fitting paint line  
Connect 1/4” OD tube between  
fitting and control module  
PAINT  
CYL  
Shroud Exhaust  
1/4” OD x 4’ tube  
(included with manifold)  
0322  
Fig  
6
308-084  
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INSTALLATION  
Megohmmeter  
See ACCESSORIES to order  
Check the Electrical Grounding (See Fig 7 )  
True Earth  
Ground  
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  
check your system as explained below  
.
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.  
Grounded  
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. Use an applied voltage of 500 minimum  
to 1000 volts maximum.  
Gun  
Manifold  
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 resis-  
tance is still greater than 2 megohms*, replace  
the air supply hose.  
0436  
Fig 7  
* If you are using the red colored hose, resis-  
tance should not exceed 100 ohms.  
2. Cut a small slit in the cover and route the two exhaust  
Install the Fabric Cover (See Fig 8 )  
tubes outside the robot arm or reciprocator. This en  
ables you to monitor the exhaust tubes for the pres  
-
-
1. Install a fabric cover over the front of the gun and  
slide it back to cover the exposed tubing and hoses at  
ence of any paint or solvent. See Check for Fluid  
Leakage on page 12. Strap down the exhaust tubes  
to prevent them from moving around.  
the back of the manifold. See ACCESSORIES sec  
tion.  
-
Fabric Cover  
Slit  
Exhaust Tubes  
Exhaust Tubes  
0437  
Fig  
8
0438  
8
308-084  
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OPERATION  
WARNING  
Pressure Relief Procedure  
7. Be sure all refuse is removed from the spray  
booth.  
To reduce the risk of serious bodily injury, including  
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 nozzles,  
and whenever you stop spraying.  
8. Be sure all flammable liquids in the spray  
booth are in approved, grounded containers.  
9. Be sure all conductive objects in the spray  
area are electrically grounded and the floor of  
the spray area is electrically conductive and  
grounded.  
1. Turn off the air to the control module, except for  
the manifold air. If the air pilot fluid regulator is  
used, air pressure is needed at the regulator air  
inlet to relieve pressure in the fluid line.  
10. Be sure to check the manifold exhaust tubes  
for the presence of any fluid as instructed in  
Check for Fluid Leakage, page 12  
.
Selecting a Fluid Nozzle and Air Cap  
2. Turn off the fluid supply to the gun.  
3. Trigger the gun into a grounded metal waste  
container to relieve fluid pressure.  
This gun is supplied with fluid nozzle 185–158 (1.5 mm)  
and air cap 177–033. If your application requires a differ-  
ent nozzle and air cap combination, use instruction  
manual 307–803 to select the appropriate fluid nozzle  
and air cap.  
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.  
Gun Functions  
WARNING  
The gun functions include the following:  
If any fluid leakage from the gun is detected,  
stop spraying IMMEDIATELY! Fluid leakage into  
S
Fluid Trigger (only)  
S Spray (properly timed on/off sequence  
of fan air, atom air, and paint)  
S Turbine Air  
the gun shroud could cause fire or explosion and re  
-
sult in serious bodily injury and property damage.  
See Check for Fluid Leakage, page 12.  
S Voltage Select  
Activating the Fluid Trigger Only  
Operating Checklist  
To activate the fluid trigger alone, first relieve the air pres  
-
Check the following list daily, before starting to operate the  
system, to help ensure you of safe, efficient operation.  
sure to the trigger module, then shut off the air supply to  
the OM and FAN air lines. Apply 50 psi (3.5 bar) mini  
mum air pressure to the CYL air supply line to activate the  
gun’s fluid trigger  
AT  
-
1. Be sure all operators are properly trained to  
safely operate an automatic electrostatic air  
spray system.  
.
Adjusting the Spray Pattern  
2. Be sure all operators are trained how to prop  
-
erly and completely relieve system pressure.  
Follow the steps below to establish the correct fluid flow  
and air flow  
on yet.  
.
DO NOT turn the turbine air (electrostatics)  
3. Be sure the system is thoroughly grounded.  
See FIRE, EXPLOSION OR ELECTRO-  
STATIC SHOCK HAZARD on page 3, and  
1. Adjust the fluid flow with the fluid line’ s pressure  
regulator.  
Check the Electrical Grounding  
on  
page 8.  
4. Be sure the operator and all persons entering  
2. Rotate the air cap for the desired spray pattern.  
the spray area are properly grounded by wear  
ing shoes with conductive soles or personal  
grounding straps.  
-
3. Use an air pressure regulator to adjust the degree of  
atomization and pattern width. For the most efficien-  
cy, always use the lowest air pressure possible.  
5. Be sure ventilation fans are operating  
properly.  
NOTE: See the Spray Pattern Troubleshooting Chart  
on page 13 to correct spray pattern problems.  
6. Be sure the workpiece hangers are clean and  
grounded. Contact points must be sharp  
points or knife edges.  
OPERATION continued on next page  
308-084  
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OPERATION  
4. Check the gun electrostatics display module, if used,  
Adjusting the Turbine Air Pressure  
to see the voltage and current output levels.  
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 and result in serious injury and property  
damage.  
NOTE: The gun’s normal high voltage output is 60 to 70  
kV. If a ball end high voltage measurement probe is used,  
the gun voltage will rise to about 85 kV. This will happen  
with all resistive electrostatic guns.  
See the Electrical Troubleshooting Chart on page 15  
to correct voltage problems.  
1. Complete all the checks under the  
Operating  
Checklist on page 9.  
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.  
To change this setting, see page 25.  
2. Make sure the fan and atomizing air are on, then turn  
the turbine air (electrostatics) on.  
3. The turbine air pressure should be adjusted to 40 psi  
(2.8 bar) at the gun manifold inlet when air is flowing.  
The gun may be operated at a lower air pressure, but  
some voltage loss could occur. Do not exceed 50 psi  
(3.5 bar) air pressure as there is no added benefit  
and turbine life could be reduced.  
The valve used to activate the KV HI/LO switch must  
bleed the air out of the line for the switch to draw back to  
the high setting.  
MAINTENANCE  
WARNING  
Daily Care and Cleaning  
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 Proce-  
dure Warning on page 9 when shutting of f the  
1. Clean the fluid and air line filters daily  
.
2. Clean the outside of the gun daily with a soft cloth  
dampened in a compatible solvent.  
system, when you stop spraying and before check  
-
ing, servicing, installing, cleaning or changing any  
part in the system.  
3. Clean the air cap and fluid nozzle daily , minimum.  
Some applications require more frequent cleaning.  
Replace the fluid nozzle and air cap if they are dam  
aged. See Clean the Air Cap and Fluid Nozzle  
-
CAUTION  
.
Clean all parts with a non-conductive solvent,  
compatible with the fluid being sprayed. Conduc-  
tive solvents can cause the gun to malfunction.  
4. Check the electrode wire. Straighten if bent, and  
replace if broken or damaged. See Replacing the  
Electrode Needle  
.
Methylene chloride is not recommended as a  
flushing or cleaning solvent with this gun as it will  
damage nylon components.  
5. Check for any fluid leakage from the gun and fluid  
hoses. See Check for Fluid Leaks.  
Immersing the gun in solvent is not recommended  
6. Check all of the work hangers for material build-up;  
as  
a
cleaning method. Solvent left in gun passages  
clean them if necessary  
.
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 fire, explosion, or electrostatic  
shock, BE SURE the turbine air (electrostatics) is  
off before flushing the gun or any part of the system.  
7. Flush the fluid passages by alternating solvent and  
air. Flush before changing colors and whenever you  
are done operating the gun.  
10 308-084  
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MAINTENANCE  
Clean the Air Cap and Fluid Nozzle  
Equipment needed:  
Soft bristle brush (supplied)  
Solvent compatible with fluid being sprayed  
Procedure:  
1. Follow the Pressure Relief Procedure Warning on  
page 9.  
2. Remove the air cap assembly and gun shroud.  
3. 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.  
4. Carefully reinstall the air cap assembly. Avoid bend  
ing the electrode. Tighten the retaining nut until it is  
snug, allowing the air cap to turn with resistance.  
-
0439  
Fig 9  
MAINTENANCE continued on next page  
308-084  
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MAINTENANCE  
Check for Fluid Leakage (See Fig 10 )  
WARNING  
During operation, periodically check the two manifold ex  
haust tubes and both ends of the gun shroud for the pres  
ence of fluid. Fluid in these areas would indicate fluid  
leakage into the shroud.  
-
-
If any fluid leakage from the gun is detected,  
stop spraying IMMEDIATELY! Fluid leakage into  
the gun shroud could cause fire or explosion and  
result in serious bodily injury and property damage.  
If fluid is seen in any of these areas, stop spraying  
immediately! Follow the Pressure Relief Procedure on  
page 9, then remove the gun for repair  
.
Fabric Cover  
Gun Shroud  
Check for signs  
of fluid leakage  
where indicated  
by arrows  
Exhaust Tubes  
0437  
0438  
Fig  
10  
12 308-084  
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SPRAY PATTERN TROUBLESHOOTING CHART  
WARNING  
Installing and servicing this equipment requires access to parts which may cause electrostatic shock or other seri  
-
ous bodily injury if the work is not performed properly  
.
Do not install or service this equipment unless you are trained  
and qualified.  
To reduce the risk of serious bodily injury, including splashing fluid or solvent in the eyes or on the skin, always follow  
the Pressure Relief Procedure on page 9 before checking, adjusting, cleaning or repairing the gun or any part of  
the system.  
NOTE: Check all possible remedies in the Troubleshooting Charts before disassembling the gun.  
PROBLEM:  
CAUSE  
SOLUTION  
IMPROPER SPRA  
Y
PATTERN  
Fluttering or spitting spray  
Insufficient fluid supply  
.
Adjust fluid regulator or fill fluid tank.  
Loose fluid nozzle or damaged  
fluid nozzle taper seat.  
Tighten or replace fluid nozzle.  
See page 19.  
Dirt between fluid nozzle, taper  
Clean. See page 11.  
seat and body  
.
Loose or cracked coupler at  
fluid inlet.  
T
ighten or repair  
.
Loose fluid tube in tank.  
Tighten.  
Fluid build-up on air cap; partially  
clogged horn holes. Full air pres-  
sure from clean horn hole forces  
fan pattern toward clogged end.  
Clean with soft implement or  
submerge in suitable solvent and  
wipe clean. See page 11.  
Bent electrode.  
Straighten electrode  
Damaged fluid nozzle or air  
cap holes.  
Replace damaged part. See  
page 19.  
Fluid build-up on the perimeter  
of fluid nozzle orifice, or partially  
clogged fluid nozzle orifice  
Remove obstruction. Never use  
wire or hard instruments. See  
page 11.  
Bent electrode.  
Straighten electrode  
Too high fan air pressure.  
Reduce air pressure or adjust fan  
air adjusting valve.  
Fluid too thin.  
Regulate fluid viscosity.  
Not enough fluid pressure  
Low fan air pressure  
Fluid too thick  
Increase fluid pressure.  
Increase air pressure.  
Regulate fluid viscosity  
.
T
oo much fluid.  
Last coat of fluid applied too wet.  
oo much air pressure.  
Reduce fluid flow  
.
Apply drier finish with multiple  
strokes.  
Streaks  
T
Use least air pressure necessary  
.
Insufficient air pressure.  
Increase air pressure.  
Non-uniform spray pattern.  
Clean or replace air cap. See  
page 11.  
NOTE: Some improper patterns are caused by the improper balance between air and fluid.  
308-084  
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GUN OPERATION TROUBLESHOOTING CHART  
PROBLEM  
CAUSE  
SOLUTION  
Leakage from fluid  
packing area  
Worn fluid rod packings or fluid rod  
Replace fluid rod packings or rod.  
See page 23.  
Fluid leakage from front  
of gun  
Fluid rod worn or damaged  
Replace fluid rod. See page 23.  
Worn fluid seat  
Replace fluid nozzle and/or  
electrode. See page 19 and 20.  
Piston seal or o-ring damaged  
Replace seal and/or o-ring and  
lubricate.  
Loose resistor stud  
Tighten resistor stud. See page 19.  
Loose fluid nozzle  
Tighten fluid nozzle. See page 19.  
Damaged resistor stud o-ring  
Replace o-ring. See page 19.  
“Orange Peel” finish  
Insufficient air pressure  
Increase air pressure, use least air  
pressure needed for good results.  
Fluid poorly mixed or filtered  
Improper thinner being used  
Remix or refilter fluid.  
Use proper thinner  
.
Excessive spray fog  
Too much air pressure  
Reduce air pressure, use least air  
pressure needed for good results.  
Fluid thinned too much  
Properly thin fluid.  
Fluid low  
Check, add fluid if necessary.  
No fluid sprays from gun  
Damaged air cap  
Replace air cap.  
Dirty or clogged fluid nozzle  
Damaged fluid nozzle  
Piston not actuating  
Clean fluid nozzle. See page 11.  
Replace fluid nozzle. See page 19.  
Check cylinder (CYL) air  
.
Actuator arm out of position  
Check actuator arm (29) and  
nuts (25, 7). See page 21.  
Equipment covered  
with fluid  
Exhaust air flow insufficient  
or not directed properly  
Check for proper CFM; check  
baffles and direction of air flow  
.
Improper distance between gun  
and workpiece  
Adjust spraying distance to  
8 to 12 inches (203 to 305 mm).  
Dirty air cap  
Misalignment between air cap  
and fluid nozzle  
Remove and clean air cap and fluid  
nozzle. See page 11. Then reinstall  
them.  
Air Cap  
Or replace fluid nozzle and air cap.  
See page 19.  
Fluid Nozzle  
ALIGNED  
MISALIGNED  
14 308-084  
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ELECTRICAL TROUBLESHOOTING CHART  
PROBLEM  
CAUSE  
SOLUTION  
Poor wrap-around  
Improper distance between gun  
and workpiece  
Adjust spraying distance to  
8 to 12 inches (203 to 305 mm).  
Parts poorly grounded  
Clean hangers, check for proper  
ground on conveyer or track.  
High booth exhaust velocity  
Reduce exhaust velocity within  
code limits.  
Atomizing air pressure too high  
Fluid pressure too high  
Reduce atomizing air pressure.  
Reduce fluid pressure.  
Improper fluid viscosity  
Check supplier for proper fluid for  
electrostatic spray  
.
Fluid resistivity too low  
No or low voltage output  
Check fluid resistivity with paint  
meter and probe.  
Check possible causes listed below  
.
Turbine alternator not operating  
Check air supply to gun.  
Faulty gun resistance  
Check gun resistance. See page 16.  
Fluid leaks from fluid rod packing  
and causes short  
Clean fluid rod cavity, replace packing.  
See page 23.  
Faulty turbine alternator  
Be sure plug is in place on back of  
turbine alternator housing. Remove  
and test turbine alternator. See page 25.  
KV HI-LO switch stuck on low  
Check switch actuation; replace if  
needed.  
Operator gets shock  
Operator not properly grounded  
or is near an ungrounded object  
Be sure floor is properly grounded.  
W
ear 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.  
Operator gets shock  
when touching workpiece  
W
orkpiece not properly  
Clean workpiece hangers. Check for  
proper ground on conveyor or track.  
grounded  
Damaged fiber optic cable or  
connection  
Check cables and connections.  
Replace if damaged.  
No or low voltage output  
reading on gun display  
module  
See other causes under Problem  
“Poor wrap-around”, above.  
308-084  
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ELECTRICAL TESTS  
The performance of the spray gun is directly affected by  
KEY  
A
Megohmmeter  
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 (40) and the  
resistor stud (2) as well as the continuity of the electrical  
path between the components.  
A
28 Electrode  
39 Gun Body  
Use megohmmeter 218–979 (see ACCESSORIES) and  
an applied voltage of 500 volts to complete these electri  
-
cal tests. Connect the leads as shown.  
Remove the gun from the manifold and bracket, as  
instructed on page 18, before performing the electrical  
tests.  
39  
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.  
Test Gun Resistance (See Fig 11 )  
28  
Measure the resistance between the end of the electrode  
(28) and the gun body (39). The resistance should be  
between 329 to 401 megohms. If the resistance is out-  
side the specified range, go to the next test. If the  
0440  
Fig 1  
1
KEY  
resistance is correct, refer to the  
Electrical  
A
Megohmmeter  
Troubleshooting Chart on page 15 for other possible  
causes of poor performance.  
EE Ground Contact Point  
40 Power Supply  
40d Seal  
A
Test Power Supply Resistance (See Fig  
12 )  
Remove the power supply (40) from the gun body (39).  
See page 25.  
Measure the resistance from the power supply’s ground  
contact point (EE) to the contact inside of the power sup  
ply seal (40d) [the conductive rubber contact may be  
slightly recessed into the seal]. See Fig 12 .  
-
The resistance should be 297 to 363 megohms. If the  
resistance is outside the specified range, the power sup  
-
ply 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  
40d  
40  
0441  
Fig 12  
16 308-084  
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ELECTRICAL TESTS  
KEY  
D
E
Test Resistor Stud Resistance  
(See Fig 13 )  
Resistor Stud Contact Ring  
Needle Contact Ring  
Remove the resistor stud. See Air Cap/Nozzle/Resistor  
Stud Replacement. Check the resistance between the  
black resistor stud ring contact (D) and the needle con-  
tact ring (E). You may have to press down on the contact  
ring (D) in several places to get a good reading.  
The resistance should be 21 to 29 megohms. If the  
resistance is correct, make sure the metal contact in the  
gun barrel and the needle contact ring (E) are clean. If the  
resistance is outside the specified range, the resistor is  
defective and the resistor stud (2) must be replaced. See  
D
E
Air Cap/Nozzle/Resistor Stud Replacement  
.
0442  
Fig 13  
WARNING  
The resistor stud contact ring (D) is a conductive  
contact ring, NOT a sealing o-ring. To reduce the  
risk of sparking, which could cause fire, explosion,  
or electrostatic shock and result in serious injury ,  
DO NOT remove the resistor stud contact ring (D)  
from the resistor stud or operate the gun without  
the contact ring in place. DO NOT replace the re-  
sistor stud with anything but a genuine Graco part.  
308-084  
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SERVICE  
WARNING  
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.  
Pressure Relief Procedure  
To reduce the risk of serious bodily injury, including  
splashing in the eyes or on the skin, injury from  
moving parts or 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 nozzles,  
and whenever you stop spraying.  
NOTE: Check all possible remedies in the  
Troubleshooting Charts before disassembling the gun.  
1. Turn off the air to the control module, except for  
the manifold air. If the air pilot fluid regulator is  
used, air pressure is needed at the regulator air  
inlet to relieve pressure in the fluid line.  
2. Turn off the fluid supply to the gun.  
3. Trigger the gun into a grounded metal waste  
container to relieve fluid pressure.  
Flush the Gun and Relieve Pressure  
WARNING  
To reduce the risk of fire, explosion, or electrostatic  
shock, BE SURE the turbine air (electrostatics) is  
off before flushing the gun.  
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.  
CAUTION  
Methylene chloride is not recommended as a  
flushing or cleaning solvent with this gun as it will  
damage nylon components.  
Remove the Gun from the Manifold and  
the Mounting Bracket (See Fig 14 )  
Before removing the gun for service, flush it by alternat  
ing solvent and air. Then follow the Pressure Relief Pro  
cedure, at right.  
-
-
1. Remove the air cap/air cap nut assembly and the gun  
shroud.  
Service Notes:  
2. Loosen the three socket head cap screws and the  
button head screw, using the ball end wrench (46)  
supplied.  
S If the plastic parts of the gun must be held in a vise,  
ONLY use padded vise jaws to avoid damaging parts.  
S ALWAYS remove the gun from the worksite for service  
or repair. The service or repair area must be clean.  
3. Remove the gun from the manifold.  
Socket Head  
Cap Screws  
Spray Gun  
Shroud  
Manifold  
O-Ring  
Air Cap/  
Air Cap Nut  
Button Head  
Screw  
01179  
Fig 14  
18 308-084  
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SERVICE  
KEY  
D
2
Air Cap/Nozzle/Resistor Stud  
Replacement  
6, 16, 43  
Contact Ring  
Resistor Stud  
CAUTION  
6, 16,  
43  
9
12  
14  
28  
31  
48  
Air Cap Assembly  
Retaining Ring  
O-Ring  
Fluid Nozzle  
Electrode  
O-Ring  
BE SURE to hold the front end of the gun up while  
removing the nozzle and resistor stud. This helps  
drain the gun and prevent any paint or solvent left  
in the gun from entering the air passages.  
12  
9
1. Point the front end of the gun up while removing the  
fluid nozzle (14) and resistor stud (2) assembly with  
the nozzle wrench (48). This helps drain the gun and  
prevent any paint or solvent left in the gun from  
entering the air passages. See Fig 15 .  
Nozzle  
Wrench  
28  
14  
If the resistor stud remains in the gun when the fluid  
nozzle is removed, start the nozzle thread onto the  
stud and pull the stud out.  
2
D
48  
2. Using an 8 mm hex key (A), unscrew and remove the  
resistor stud (2). See Fig 16 .  
31  
WARNING  
The resistor stud contact ring (D) is a conductive con  
-
tact ring, NOT a sealing o-ring. To reduce the risk of  
sparking, which could cause fire, explosion, or elec-  
trostatic shock and result in serious injury, DO NOT  
0443  
Fig 15  
remove the contact ring from the resistor stud or op  
-
14  
KEY  
A
2
erate the gun without the contact ring in place. DO  
NOT replace the resistor stud with anything but a  
genuine Graco part.  
Torque to  
10 in-lbs  
(1.12 NSm)  
8 mm Hex Key  
Resistor Stud  
Fluid Nozzle  
14  
2
To install the resistor stud:  
3. Lightly lubricate the o-ring (31) with petroleum jelly  
and install it on the resistor stud (2).  
4. Using an 8 mm hex key (A), install the resistor stud  
(2) in the fluid nozzle (14). T  
ighten to 10 in-lb  
(1.12 NSm).  
Make sure the electrode (28) is tightened properly ,  
as shown in Fig 17 , page 20.  
5. Install the fluid nozzle (14) and resistor stud (2)  
assembly with the nozzle wrench (48). Tighten until  
the fluid nozzle seats in the gun barrel (1/8 to 1/4 turn  
past hand-tight).  
A
0444  
Fig 16  
6. Install the air cap assembly (6, 16, 43), o-ring (12),  
and retaining ring (9). T  
instructed on page 16.  
est gun resistance as  
308-084  
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SERVICE  
KEY  
28  
47  
Electrode Replacement  
Electrode  
Electrode  
1. Remove the air cap, nozzle and resistor stud as  
Tool  
described in  
Air Cap/Nozzle/Resistor  
Stud  
Replacement.  
2. Unscrew and remove the fluid needle/electrode (28)  
with the electrode tool (47) provided. Be careful not  
to damage the contact wire. See Fig 17 .  
47  
If the fluid rod turns, hold the back end of the fluid rod.  
28  
Apply low-strength  
(purple) Loctite  
or equivalent  
3. Apply low-strength (purple) Loctite r or equivalent  
thread sealant to the electrode and fluid rod threads.  
Refer to SERVICE NOTES, page 25.  
Hold the back end of the fluid rod to prevent it from  
turning while installing the new electrode finger tight.  
DO NOT over tighten the electrode.  
CAUTION  
To avoid damaging the plastic threads or contact  
wire, be very careful when installing the electrode.  
4. Install the fluid nozzle and resistor stud assembly .  
Install the air cap assembly. Test the gun resistance  
as instructed on page 16.  
0445  
Fig 17  
20 308-084  
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SERVICE  
KEY  
10  
39  
40  
Barrel Removal  
Gun Barrel  
Gun Body  
Power Supply  
1. Carefully loosen the fluid fitting nut (21). Pull the tube  
(19) out of the fitting. Make sure both ferrules and the  
nut stay with the tube. See Fig 19 .  
2. Remove the jam nut (25) and actuator arm (29).  
NOTE: The fluid nozzle must be in place when removing  
or installing the jam nut and actuator arm.  
10  
39  
3. Using the ball end wrench (46), supplied, loosen the  
three socket head cap screws (15). See Fig 20 .  
4. Hold the gun body (39) with one hand and pull the  
barrel (10) straight away from the body to remove it.  
See Fig 18 .  
CAUTION  
40  
To avoid damaging the power supply, always pull  
the gun barrel straight away from the gun body. If  
necessary, gently move the barrel from side to  
side to free the power supply from the gun body  
.
0447  
Fig 18  
KEY  
7
Jam Nut  
25  
29  
39  
Jam Nut  
Actuator Arm  
Gun Body  
10  
19  
21  
Gun Barrel  
Fluid Tube  
Fluid Fitting Nut  
39  
10  
19  
21  
25 29  
7
0446  
Fig 19  
308-084  
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SERVICE  
4. Install the fluid tube back into the fluid fitting (21).  
Barrel Installation  
1. Be sure the gaskets (23 & 40a) and spring (11) are in  
place. See Fig 20 . Replace if damaged.  
5. Install the actuator arm (29) and jam nut (25), with the  
jam nut assembled flush to the end of the rod.  
2. Place the barrel (10) over the power supply (40) and  
onto the gun body (39). Make sure the fluid rod spring  
There should be about a 1/16 in. gap between the ac  
-
tuator arm (29) and the nut on the fluid shaft. When  
the gun is triggered, the electrode needle should  
draw back 3 to 4 mm. If necessary , adjust the jam  
nuts to obtain these dimensions.  
(11) is seated properly  
.
3. Tighten the three socket head cap screws (15)  
oppositely and evenly with the ball end wrench (46).  
Tighten the cap screws to 18 in-lbs (2 N Sm) MAXI-  
MUM (about a half turn past snug). DO NOT over  
tighten.  
The jam nut must be tightened securely to prevent it  
from loosening during operation.  
6. Test the gun resistance as instructed on page 16.  
CAUTION  
To avoid damaging the gun, DO NOT over tighten  
the cap screws (15). Tighten the screws to 18 in-  
lbs (2 N Sm) MAXIMUM (about a half turn past  
snug), using the wrench (46) supplied only  
.
KEY  
39  
10  
11  
15  
21  
23  
25  
29  
39  
40  
Gun Barrel  
Spring  
Cap Screws  
Fluid Tube Fitting  
Gasket  
Jam Nut  
Actuator Arm  
Gun body  
40a  
40  
23  
Power Supply  
15  
40a Gasket  
10  
21  
29  
25  
11  
0457  
Fig 20  
22 308-084  
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SERVICE  
Fluid Packing Rod Removal and Repair  
KEY  
3
45  
Fluid Packing Rod Assembly  
Hex Nut Driver  
NOTE: The fluid packing rod can be replaced as  
individual parts or as an assembly . If the assembly is  
purchased, it is pre-adjusted at the factory  
.
1. Remove the jam nut (25) and arm (29). See Fig 20 .  
2. Remove the air cap assembly, fluid nozzle and resis  
-
tor stud and electrode as described in Electrode  
Replacement.  
45  
3
3. Remove the fluid packing rod assembly (3), using the  
9
mm hex nut driver (45). See Fig 21 .  
CAUTION  
Clean all parts in non-conductive  
solvent  
compatible with the fluid being used, such as xylol  
or mineral spirits. Use of conductive solvents can  
cause the gun to malfunction.  
4. Check all the parts for wear or damage and replace if  
necessary.  
0448  
Fig 21  
Before installing the fluid packing rod assembly (3),  
clean the internal surfaces of the barrel with a soft  
brush or cloth. Check the inside of the barrel for  
marks from high voltage arcing. If the marks are  
present, replace the barrel.  
6. Place the packing nut (3c) and o-ring (3g) on the fluid  
rod (3b). The flats on the packing nut must be facing  
toward the back of the fluid rod.  
7. Fill the entire inner cavity of the spacer (3d) with the  
dielectric grease included with the gun. Place the  
spacer on the fluid rod (3b), in the direction shown in  
Fig 22 . Generously apply the grease to the outside  
5. If the parts are purchased separately , assemble  
them as instructed in steps 6 to 9 and as shown in  
Fig 22 .  
of the spacer  
.
If installing the complete fluid rod assembly , go to  
step 10, on page 24.  
(Item 11 not included with  
Fluid Packing Rod Assembly)  
KEY  
E
Nut  
3
Fluid Packing Rod  
Assembly  
Packing Housing  
Fluid Rod  
Packing Nut  
Spacer  
Rod Packing  
Fluid Packing  
O-Ring  
E
11  
3h  
3f  
3d  
3a  
3e  
3g  
3a  
3b  
3c  
3d  
3e  
3f  
3c  
3b  
3g  
11  
Spring  
3
03224  
Fig 22  
308-084  
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SERVICE  
11. Install the fluid packing rod assembly (3) into the gun  
Fluid Packing Rod Removal and Repair  
(continued)  
barrel. Using the 9 mm hex nut driver (45), tighten the  
assembly until just snug, then check the drag on the  
fluid rod.  
8. Place the fluid packing (3f), rod packing (3e), and  
housing (3a) on the fluid rod (3b) as shown in Fig 22 .  
12. Make sure the spring (11) is installed on the nut (E) as  
shown in Fig 22 .  
9. Lightly tighten the packing nut (3c). The packing nut  
is properly tightened when there is 2 lbs. (9 N) of drag  
force when sliding the packing housing (3a) assem  
bly along the shaft. Tighten or loosen the packing nut  
as needed.  
-
7. Install the electrode, nozzle and resistor stud  
assembly and the air cap assembly as described in  
Electrode Replacement  
.
8. Install the arm (29) and jam nut (25), with the jam nut  
assembled flush to the end of the rod. See Fig 20 ,  
page 22.  
10. Lubricate the o-ring (3h) on the outside of the packing  
housing (3a).  
24 308-084  
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SERVICE  
KEY  
F
G
10  
13  
27  
13  
40  
40e  
3-wire Connector  
Potentiometer  
Gun Barrel  
Retainer Ring  
Alternator  
40b  
G
39  
27a O-Ring  
27b Cushion  
39  
40  
Gun Body  
Power Supply  
40a  
40a Gasket  
40b Pad  
40c  
40c Pad  
40d Seal  
40e Cushion  
40d  
F
27a  
27  
10  
27b  
0450  
Fig 23  
Power Supply Removal and Replacement  
Power Supply Adjustment  
REPAIR NOTES:  
The KV HI/LO switch, on the back of the gun manifold,  
enables you to switch between full voltage and a lower  
voltage output. The lower voltage is factory set at 60 kV  
a. To avoid a loss in electrostatic performance,  
inspect the gun handle’s power supply cavity  
for dirt or moisture. Clean the cavity with a  
clean, dry rag.  
,
but can be adjusted between 45 and 80 kV  
.
To adjust the low voltage setting, use a small blade end  
screw driver to turn the potentiometer (G), clockwise to  
increase the voltage or counterclockwise to decrease it;  
b. Do not expose the seal (40d) or o-ring (27a) to  
solvents as solvents will damage them.  
fully clockwise is 80 kV, fully counterclockwise is 45 kV  
.
1. Remove the barrel as described in Barrel Removal  
.
Turbine Alternator Removal and  
Replacement  
2. Grasp the power supply (40) with your hand. With a  
gentle side-to-side motion, being careful not to dam  
-
age the power supply, pull the power supply free from  
the gun handle (39), then pull it straight out.  
NOTE: Replace turbine bearings after 2,000 hours of  
operation. See your authorized Graco representative.  
3. Inspect the power supply for any physical damage.  
Check the electrical resistance as instructed in Test  
Power Supply Resistance. If needed, replace the  
1. Remove the power supply from the gun handle as  
described at left.  
power supply  
.
2. Squeeze the two ends of the retaining ring (13)  
together and carefully pull the alternator (27) away  
from the power supply (40) until the wire connector  
(F) disengages. See Fig 23 .  
Before installing the power supply, inspect the seal  
(40d) for any damage or swelling; replace if neces-  
sary. Also, make sure the gaskets/pads (40a–40e)  
are in place.  
3. Use an ohmmeter to test the turbine alternator coil.  
Measure the resistance between the two outer termi  
-
4. Lubricate the o-ring (27a) and insert the power sup  
-
nals of the 3-wire connector (F). Resistance should  
be 3 to 5 ohms. If the reading varies from this value,  
ply in the gun handle.  
replace the alternator  
.
5. Install the barrel on the handle as described in Barrel  
Installation.  
4. Connect the 3-wire connector to the 3 prongs in the  
power supply. Push the alternator (27) onto the pow  
-
er supply (40) until the retaining ring (13) engages  
with the alternator  
.
5. Install the power supply in the gun handle as  
described at left.  
308-084  
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SPRAY GUN SERVICE NOTES  
CAUTION: Do not  
damageNeedle Elec  
-
trode wire during  
Lubricate  
assy. or disassy  
.
Tighten Resistor  
Stud into nozzle to  
10 in-lbs (1.15 NSm)  
Lubricate  
T
ighten Nozzle 1/8 to 1/4  
Apply low strength (pur-  
ple) Loctite or  
turn past hand tight  
equivalent to threads  
Lubricate  
WARNING: DO  
NOT remove  
contact ring  
Lubricate  
CAUTION: DO NOT over  
tighten Capscrews. Tighten to  
18 in-lbs (2 N m) MAXIMUM  
(about half turn past snug), us  
S
-
ing wrench provided.  
Torque Fitting to 25–35 in-lbs  
(2.8–4.0 NSm)  
Install into internal  
grooves in fitting  
Fits between  
flared tube  
and fitting  
Lubricate  
Stretch o-ring to start  
it over fitting threads,  
then thread it into  
place  
Lubricate  
Apply PTFE paste  
to threads  
Install flush to  
end of rod  
Apply high strength  
(red) Loctite or  
equivalent to threads.  
0433  
26 308-084  
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MANIFOLD SERVICE NOTES  
Press fit  
Concave side  
toward manifold  
Left-hand  
threads  
Apply low strength  
(purple) Loctite or  
equivalent  
This end 8.5-8.9”  
(215-225 mm) from  
manifold surface when  
properly assembled  
Lubricate  
T
orque to  
25 in-lb  
(2.8 NSm)  
Must be  
clean  
Standard o-ring is Viton.  
Optional EPR o-ring is  
T
orque to  
25 in-lb  
provided with the man  
-
(2.8 NSm)  
ifold for compatibility with  
ketone solvents.  
Apply low strength  
(purple) Loctite  
or equivalent  
Press fit  
T
ighten until  
hex bottoms  
against manifold  
0434  
T
orque to  
Lubricate  
25 in-lb  
0434  
(2.8 NSm)  
308-084  
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SPRAY GUN PARTS DRAWING  
DETAIL A  
See Detail A  
REF NO. 3  
Includes items 3a–3h  
3c  
28  
3g  
3d  
31  
3f  
3
3e  
2
3b  
3a  
14  
3h  
9
0601  
16  
27a  
43  
27  
12  
40e  
27b  
6
13  
40b  
18  
40c  
15  
40  
10  
40d  
40a  
23  
24  
32  
22  
42  
8
4
1
36  
17  
30  
11  
19  
36  
41d  
41j  
REF  
3
41f  
20  
39  
29  
41a  
25  
41h  
41c  
41b  
41i  
21  
41g  
41e  
21b  
5
7
21a  
41  
REF 19  
0433  
28 308-084  
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SPRAY GUN PARTS LIST  
Part No. 224–224 Automatic  
Electrostatic Air Spray Gun, without shroud  
Includes items 1–17, 19–52  
Part No. 235–894, Series A  
Air Spray Gun, with slotted shroud  
Includes items 1–52  
Part No. 235–893, Series A  
Air Spray Gun, with standard shroud  
Includes items 1–52  
REF  
REF  
NO. PART NO.  
DESCRIPTION  
QTY  
NO. PART NO.  
DESCRIPTION  
QTY  
1
2
3
186–762  
223–977  
224–747  
PISTON, valve  
STUD, resistor  
PACKING ROD ASSY  
Includes items 3a–3h  
SHOUSING, packing  
SROD, fluid  
SNUT, packing  
SSPACER, packing  
SPACKING, rod  
1
1
39  
40  
224–095  
224–093  
BODY, gun  
1
POWER SUPPLY ASSY; 85 KV  
Includes items 40a–40e  
SGASKET, power supply  
SPAD  
SPAD  
SSEAL  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4
1
1
1
40a{ 186–840  
40b 185–099  
40c 185–145  
40d{ 186–637  
40e 185–141  
3a  
3b  
3c  
3d*  
3e*  
3f*  
3g*  
3h*  
4
5
6
7
8
185–495  
223–981  
185–488  
186–069  
178–763  
178–409  
111–504  
111–316  
186–763  
111–177  
186–764  
102–025  
100–518  
176–930  
223–940  
185–111  
SCUSHION  
41  
224–340  
CHECK VALVE ASSY  
Includes items 41a-41j  
SMUFFLER/FLAME ARRESTOR  
SBEARING, ball  
SPACKING, fluid  
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
SO-RING, fluoroelastomer  
SO-RING, fluoroelastomer  
COVER, piston  
CAP SCREW, button hd; 1/4-20 x 0.5”  
RING, air cap  
NUT, hex; 1/4”-20  
SCREW, mach, pnh; 6–32 x 3/8”  
RING, retaining  
41a 187–264  
41b 108–046  
41c 101–435  
41d 186–980  
41e 186–981  
SBEARING, ball  
SFITTING, check valve; 5/16-18  
SSCREW, check valve; M4 x 0.7  
SBODY, check valve; 3/4-16  
SNUT, check valve; 3/4-16  
SSEAT, check valve  
SVALVE, check, body  
SO-RING; Viton  
O-RING; Viton  
GASKET, air cap nut  
TAG, warning (not shown)  
DRIVER, hex nut; 9 mm (not shown)  
WRENCH, barrel (not shown)  
WRENCH, electrode (not shown)  
WRENCH, nozzle (not shown)  
SIGN, warning, English (not shown)  
COVER, gun (not shown)  
WRENCH, allen; 8 mm  
41f  
186–982  
41g 186–983  
41h 186–984  
41i  
41j  
42*  
43{ 186–848  
44** 179–791  
45  
46  
47  
48  
9
10  
11  
BARREL, gun  
SPRING, compression  
O-RING, PTFE r  
186–985  
103–337  
103–337  
12{ 110–492  
13  
14  
1
1
185–114  
185–158  
RING, retainer, alternator  
NOZZLE, fluid, See Manual 307–803  
for available nozzles  
SCREW, cap, relieved; M5 x 0.8  
AIR CAP; See Manual 307–803 for  
available air caps  
PACKING, u-cup, UHMWPE  
SHROUD, standard; included with  
Part No. 235–893 only  
SHROUD, slotted; included with  
Part No. 235–894 only  
TUBE, flared; PTFE  
1
3
110–087  
107–460  
185–123  
187–421  
15  
16  
185–096  
177–033  
1
1
17{ 181–039  
49** 180–060  
186–770  
50  
51  
52  
187–343  
110–088  
105–749  
1
18  
188–699  
BRUSH  
1
1
1
19  
20  
21  
186–958  
186–765  
187–319  
ROD, actuator  
* The replacements for these parts are available in Fluid Seal  
Repair Kit 237–786. Purchase the kit separately  
CONNECTOR, male; 1/8 npt; for 1/4”  
OD tubing; Includes items 21a & 21b  
SFERRULE  
.
1
1
1
1
1
1
1
** Additional warning tags and signs available at no charge.  
French, German, and Spanish warning signs are also avail  
able. See ACCESSORIES section.  
21a* 111–285  
21b* 111–286  
22  
-
SFERRULE  
186–818  
FITTING, fluid; 5/8-20  
GASKET, manifold; polyethylene  
CAP, retainer, spring  
NUT, hex, jam; 1/4”-20  
ALTERNATOR, turbine  
Includes items 27a & 27b  
SO-RING, Vitonr  
SCUSHION  
NEEDLE, electrode  
ARM, actuator  
O-RING; PTFE
23{ 185–113  
{ The replacements for these parts are available in Air Seal  
24  
25  
27  
181–178  
101–324  
222–319  
Repair Kit 224–636. Purchase the kit separately  
.
WARNING  
1
1
1
1
1
When servicing use only genuine Graco replacement  
parts. Use of other parts or any modification of the  
gun could alter the grounding continuity of the gun or  
cause parts to rupture and result in serious injury, fire,  
explosion, electrostatic shock or property damage.  
27a{ 110–073  
27b 185–124  
28  
29  
30*  
31*  
32  
185–107  
186–766  
102–982  
111–507  
111–182  
1
O-RING; fluoroelastomer  
SPRING, compression  
O-RING; fluoroelastomer  
1
1
2
36{* 111–450  
308-084  
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MANIFOLD PARTS DRAWING  
122  
110  
114  
111  
106  
103  
124  
116  
112  
121  
101  
104  
118  
117f  
117e  
109  
117g  
117b  
117h  
108  
107  
113  
117c  
117d  
104  
115  
0434  
MANIFOLD PARTS LIST  
Part No. 224–094 Gun Manifold  
Includes items 101–124  
REF  
REF  
NO.  
P
ART NO.  
DESCRIPTION  
QTY  
NO.  
P
ART NO.  
DESCRIPTION  
SSPRING, compression  
SSET SCREW, cup point; 4-40  
SPACKING, u-cup; UHMWPE  
FITTING, fluid; 1/4 npsm  
SLEEVE, o-ring  
O-RING; Viton  
O-RING; EPR  
TUBE  
QTY  
101 111–224  
103* 106–167  
104 110–078  
106 186–846  
107 186–820  
108 183–822  
109{ 105–668  
110 186–844  
LENSE  
1
2
2
3
1
4
4
1
1
1
1
1
1
1
117f 111–208  
117g 111–295  
117h 111–294  
118 185–819  
121 186–847  
122{ 111–180  
123 111–333  
124 224–548  
1
1
1
1
1
1
1
1
O-RING; perfluoroelastomer  
FITTING, tube; for 3/8” OD tube  
BOLT, manifold; M5 x 0.8  
MANIFOLD  
SLEEVE, o-ring  
O-RING; Vitonr  
FITTING, flow-washer; M16 x 1.5 LH  
FITTING, turbine; 1/4-18 npsm LH  
O-RING, Viton  
FITTING, fiber optic cable; 7/16-20  
DISK, regulator  
FITTING, tube; for 1/4” OD tube  
FITTING, barb  
SWITCH, voltage  
111  
186–845  
112{ 105–796  
113 186–779  
114 107–107  
115 111–157  
116 111–237  
117 224–143  
*
The replacements for these parts are available in Fluid Seal  
Repair Kit 237–786. Purchase the kit separately  
.
{The replacements for these parts are available in Air Seal  
Repair Kit 224–636. Purchase the kit separately  
.
WARNING  
Includes items 17a-17h  
SCYLINDER  
SPISTON  
SFITTING, plug  
SFITTING, male  
1
1
1
1
1
1
When servicing use only genuine Graco replacement  
parts. Use of other parts or any modification of the gun  
could alter the grounding continuity of the gun or cause  
parts to rupture and result in serious injury, fire, explo  
sion, electrostatic shock, or property damage.  
117a 186–809  
117b 186–808  
117c 186–810  
117d 111–165  
117e 224–577  
-
SMAGNET  
30 308-084  
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PRO 4600HC CONVERSION KIT  
Part No. 237–301  
8. Slide the nylon nut (202) and ferrules (203 & 204)  
onto the coiled tube assembly (201). See Fig. 24 .  
PRO 4600HC Conversion Kit; To convert the PRO  
4600SCt spray gun to the PRO 4600HC spray gun.  
The longer 20 in. (508 mm) fluid tube used by the HC  
gun provides increased spraying voltage when spray  
ing highly conductive fluids. The kit must be ordered  
separately. It includes items 201 to 204.  
9. Install the coiled tube assembly (201) into the fluid  
fitting and tighten the nut (202). See Fig. 27 .  
Make sure the entire tube is clear of the actuator  
-
arm (D) to avoid having the tube rub against it dur  
ing operation.  
-
Ref.  
No.  
Part No.  
Description  
Qty.  
10. Install the gun onto the manifold. Refer to page 6.  
201  
202  
203  
204  
237–299  
112–644  
111–285  
111–286  
COILED TUBE ASSY.  
NUT; nylon; for 1/4” O.D. tube  
FERRULE; nylon  
1
1
1
1
FERRULE; nylon  
201  
B
A
04673  
Fig. 25  
202  
203  
204  
201  
3933A  
Fig. 24  
Installing the PRO 4600HC Conversion Kit  
1. Flush the gun with a compatible solvent.  
2. Relieve system pressure as instructed in the Pres-  
sure Relief Procedure on page 18.  
04674  
3. Remove the gun from the manifold as instructed  
on page 18. Remove the gun from the spray area.  
Fig. 26  
4. Remove the PRO 4600SC gun’s fluid tube, fittings,  
and o-rings (B). See Fig. 25 .  
5. Clean the barrel fluid inlet (A) with compatible sol  
vent. Inspect the barrel fluid inlet for damage and  
replace if needed.  
-
6. Slide the coils of the tube assembly (201) over the  
front of the gun barrel, until it is past the barrel fluid  
inlet (A). See Fig. 26 and 27 .  
A
C
D
201 202  
7. Position the coiled tube assembly so its threaded  
inlet fitting (C) is aligned with the barrel fluid inlet  
(A), then tighten the fitting into the inlet as shown  
in Fig. 27 .  
04672  
Fig. 27  
308-084  
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ACCESSORIES  
Accessories must be purchased separately  
.
Use only GENUINE GRACO PARTS AND ACCESSORIES.  
AIR AND FLUID LINE ACCESSORIES  
Air Filter & Moisture Separator 106–148  
250 psi (17.5 bar) MAXIMUM WORKING PRESSURE  
For cleaning and drying air in air spray  
system. 20 micron element, 5 oz. bowl  
capacity, 3/8 npt(f) inlet and outlet  
Air Pilot Paint Regulator 224–531  
For controlling paint flow through the spray gun.  
Connects to mount assembly 235–094.  
High Volume Air Regulator 206–199  
0331  
0–125 psi (0–9 bar) Regulated Pressure  
200 psi (14 bar) Steel Pressure Gauge  
For regulating air to the gun.  
Grounded Air Supply Hose  
1/2 npt(f) inlet and outlet  
100 psi (7 bar) MAXIMUM WORKING PRESSURE  
0.315 in. (8 mm) ID; 1/4 npsm(f) x 1/4 npsm(f) LH;  
Color coded 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)  
Air Shut-off Valve 224–754  
150 psi (10 bar) MAXIMUM WORKING PRESSURE  
For turning air to gun off or on.  
1/4 npsm(m) LH x 1/4 npsm(f) LH  
Grounded Air Supply Hose  
100 psi (7 bar) MAXIMUM WORKING PRESSURE  
0.315 in. (8 mm) ID; 1/4 npsm(f) x 1/4 npsm(f) LH;  
Color coded gray; More flexible than black hose  
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  
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)  
Filter (Air or Paint) 202–271  
750 psi (52 bar) MAXIMUM WORKING PRESSURE  
With 60 mesh (250 micron) element,  
3/8 npt(f) inlet, 3/8 npt(m) outlet  
Grounded Air Supply Hose  
100 psi (7 bar) MAXIMUM WORKING PRESSURE  
0.315 in. (8 mm) ID; 1/4 npsm(f) x 1/4 npsm(f) LH;  
Color coded red; Stainless steel braid ground path  
PART NO. LENGTH  
235–068  
235–069  
235–070  
235–071  
235–072  
235–073  
235–074  
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)  
Fluid Drain Valve  
500 psi (35 bar) MAXIMUM WORKING PRESSURE  
For relieving fluid line pressure  
208–630 1/2 npt(m) x 3/8 npt(f); carbon steel and  
PTFE;for non-corrosive fluids  
210–071 3/8 npt(m) x 3/8 npt(f); stainless steel and  
PTFE;for corrosive fluids  
Air Adapter Nipple 185–493  
For connecting two or more grounded gun air supply  
hoses. 1/4 npt x 1/4 npsm (left hand thread)  
32 308-084  
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ACCESSORIES  
Accessories must be purchased separately  
.
Use only GENUINE GRACO PARTS AND ACCESSORIES.  
GUN MOUNTING ACCESSORIES  
ES Display Module 224–117  
Receives fiber optic transmission from the PRO 4600SC  
Gun and displays the guns output voltage and current.  
Mounts in a standard 19” DIN Rack. Refer to manual  
308–265.  
Gun Mount Assembly 235–094  
Bracket for mounting to a 1/2 inch  
(12.7 mm) rod, with a slot for mount  
ing the air pilot fluid regulator  
224–531.  
-
01875  
Gun Mount Assembly 224–118  
For mounting the PRO4600 gun to the GMF P150 robot.  
Mount Extensions 224–255/259  
For extending the mount length of Mount Assembly  
224–118. Contact your Graco representative for avail-  
able lengths.  
0309  
Nylon Fabric Cover 187–343  
Fabric cover to protect the manifold inlet tubing and  
fittings from paint buildup.  
24 Volt Power Supply 235–301  
Provides 24 volt power for up to 23 ES Display Modules.  
187–343  
0437  
GUN CONTROL AND MONITORING  
ACCESSORIES  
For  
more information about gun controls and monitoring  
01339  
accessories contact your Graco representative.  
Pneumatic Trigger Module 235–768  
Provides pilot air valve control for atomizing air , fan air  
and fluid trigger air gun functions. Refer to  
308–264.  
manual  
01768  
308-084  
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ACCESSORIES  
Accessories must be purchased separately  
.
Use only GENUINE GRACO PARTS AND ACCESSORIES.  
CABLE ACCESSORIES  
Bulkhead Connector 224–261  
For connection between two fiber optic cables.  
Fiber Optic Cables  
Fiber Optic Cable Assembly  
For connection between gun manifold and  
display  
module or between bulkhead connector and display  
module.  
PART NO. LENGTH  
224–680  
224–681  
224–682  
224–683  
224–684  
224–685  
224–686  
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)  
0185A  
MISCELLANEOUS ACCESSORIES  
Grounding Clamp and Wire 222–011  
12 ga, 25 ft (7.6 m) wire  
0189  
0330  
Megohmmeter 218–979  
Fiber Optic Cable Extender  
For connection between gun manifold and bulkhead con  
nector.  
PART NO. LENGTH  
500  
Volt output; 0.01–2000 megohms.  
-
Not for use in Hazardous areas.  
224–670  
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)  
224–671  
224–672  
224–673  
224–674  
224–675  
224–676  
0184  
34 308-084  
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Safety Warning Signs  
Available at no charge from Graco.  
MANUAL CHANGE SUMMAR  
Y
Must be ordered separately  
.
The following parts have been changed in this revision:  
PART NO. DESCRIPTION  
180–060  
180–061  
180–062  
180–063  
W
W
W
W
arning Sign (English)  
arning Sign (French)  
arning Sign (German)  
arning Sign (Spanish)  
Assembly  
Changed  
Part  
Status  
Ref  
No.  
Part No. Name  
224–635,  
224–224,  
235–893 &  
235–894  
Old  
New  
3
3
223–980 Packing Rod  
224–747 Packing Rod  
Added  
Added  
51  
52  
110–088 Wrench  
105–749 Brush  
Paint Resistance Meter 722–886  
Used with 722–860 Paint Probe to measure resistance of  
paint. Not for use in Hazardous areas.  
Spray Gun  
Miscellaneous Changes:  
1. Changed the Fluid Seal Repair Kit from part no.  
Paint Probe 722–860  
224–635 to part no. 237–786.  
Used with 722–886 Paint Resistance Meter to  
measure resistance of paint. Not for use in  
Hazardous areas.  
2. Added the PRO 4600HC Conversion Kit, part no.  
237–301 to the manual.  
Gun High Voltage Probe & Meter 217–452  
For direct measurement of gun output voltage.  
SYSTEMS  
Gun, Manifold, and Mount System 235–303  
Includes:  
PART NO. DESCRIPTION  
224–224  
224–094  
235–094  
PRO4600 Gun  
Gun Manifold  
Standard Gun Mount  
TECHNICAL DATA  
Weight (gun & manifold)  
Maximum orking Pressure  
Air Pressure Operating Range  
Fluid Pressure Operating Range  
Voltage Output . . . . . . . . . . . . . . . . . . . . . . . . . . 0–85 kV  
Paint Resistivity Range . . . . 3 megohm cm to infinity  
Turbine Air Inlet . . . . . . . . . . . . . . . . . 1/4 npsm(m) L.H.  
Wetted Parts . . . . . . Stainless Steel, Nylon, Acetal,  
r, Kalrez r, Ultra High  
.
. . . . . . . . . . . . . 43 oz (1207 g)  
. . . . . . . . . 100 psi (7 bar)  
. . 0–100 psi (0–7 bar)  
0–100 psi (0–7 bar)  
W
.
.
.
.
.
.
PTFE  
Molecular W eight Polyethylene,  
Ceramic, Chemraz r, Fluoro-  
polymer  
Vitonrr and Kalrezr are registered trademarks of the  
DuPont Co.  
Loctiter is a registered trademark of the Loctite Corporation.  
Chemrazr is a registered trademark of the Green, Tweed, & Co.  
308-084  
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THE GRACO WARRANTY AND DISCLAIMERS  
WARRANTY  
Graco warrants all equipment manufactured by it and bearing its name to be free from defects in material and workman  
ship on the date of sale by an authorized Graco distributor to the original purchaser for use. As purchaser s sole remedy  
-
for breach of this warranty, Graco will, for a period of twelve months or two thousand hours of operation from time of sale,  
repair or replace any part of the equipment proven defective. However, any deficiency in the barrel, handle, trigger, hook,  
internal power supply, and alternator (excluding turbine bearings) will be repaired or replaced for thirty-six months or six  
thousand hours of operation from time of sale. This warranty applies only when the equipment is installed, operated and  
maintained in accordance with Graco’s written recommendations.  
This warranty does not cover, and Graco shall not be liable for, any malfunction, damage or wear caused by faulty instal  
-
lation, 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 materi  
als not supplied by Graco.  
-
This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco  
distributor for verification of the claim. If the claimed defect is verified, Graco will repair or replace free of charge any  
defective parts. The equipment will be returned to the original purchaser transportation prepaid. If inspection of the  
equipment does not disclose any defect in material or workmanship, repairs will be made at a reasonable charge, which  
charges may include the costs of parts, labor and transportation.  
DISCLAIMERS AND LIMITATIONS  
The terms of this warranty constitute purchaser  
plied), including warranty of merchantability or warranty of fitness for a particular purpose, and of any non–contractual liabili  
ties, including product liabilities, based on negligence or strict liability. Every form of liability for direct, special or consequential dam  
s sole and exclusive remedy and are in lieu of any other warranties (express or im  
-
-
-
ages 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 re  
spect to accessories, equipment, materials, or components sold but not manufactured by Graco. These items sold, but not manu  
factured 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: 1–800–367–4023 Toll Free  
,
FOR TECHNICAL ASSISTANCE, service repair infor-  
mation or answers about the application of Graco equip  
ment, 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. .O. BOX 1441 MINNEAPOLIS, MN 55440–1441  
P
PRINTED IN U.S.A. 308–084 June 1991 Revised January 1995  
36 308-084  
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