Graco 307726D PRO AA5000 SPRAY GUN Owner's Manual

INSTRUCTIONS-PARTS LIST
307-726
ORACQ
This manual contains IMPORTANT
WARNINGS and INSTRUCTIONS
READ AND RETAIN FDA REFERENCE
Model PROAA50WTM
AUTOMATIC MID-RANGE ELECTROSTATIC
AIR-ASS,ISTED AIRLESS SPRAY GUN
66bar (950psi) MAXIMUM WORKING FLUID PRESSURE
7 bar (1IX)psi) MAXIMUM WORKING AIR PRESSURE
Part Number 21&92E, Series A
Includes a 219-41 1 0.2?9 mm (0.011 in.) spray tip
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U.S. Patent No. 4.290.091: 4.219.865: 4.386.739:
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Italian Patent No. 1,111,380
West German Patent No. DE 22 09 896
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and Other U.S.and Foreign Patents Pending
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GRACO INC. P.O. Box 1441 MINNEAPOLIS,
@COPYRIGHT 1985 GRACO INC.
MN 5-1-
Rov D
SUPERSEDES C
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TABLE OF CONTENTS
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TERMS
HOW THE ELECTROSTATIC AIR-ASSISTED
AIRLESS SPRAY GUN WORKS
WARNINGS
Fluid injection Hazard
Equipment Misuse Hazard
Fire or Explosion Hazard
Hose Safety
INSTALLATION
Typical Installation Drawing
Warning Signs
Ventilate the Spray Booth
Mount the Gun
Connect the Air Lines
Connect the Fluid Line
Check the Electrical Grounding
Installing the Optional Fan Air Adapter
OPERATION
Operation Checklist
Filter the Fluid
Selecting a Spray Tip..
Installing a Spray Tip
Adjust the Spray Pattern
Spraying Operation
Cleaning
Flushing
SERVICE
Troubleshooting
10
Electrical Tests
14
Gun Repair
16
Electrode WIra Replacement
16
Ball Seat Housing b Resistor Replacement
16
Gun Housing Removal
16
Gun Housing Reassembly
16
Fluld Needle Replacement
17
Power Cartridge Replacement
17
Turbine Alternator Removal
18
Fan Air Valve Replacement
18
Piston Removal b Repair
18
Disc Regulator 0-Ring Replacement
19
Muffler Replacement
19
PARTS DRAWING
PARTS LIST
21
ACCESSORIES..
SPRAY TIP SELECTION CHART
23
HOWTO ORDER REPLACEMENTPARTS.
24
TECHNICAL DATA
Back Cover
WARRANTY
Back Cover
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TERMS
Be sure you read and understand each of these terms
before reading the rest of the manual.
FOR YOUR SAFETY Alerts user to read the additional safety
warnings on the page indicated.
WARNING Alerts user to avoid or correct conditions which
could cause bodily injury.
FLUID INJECTION INJURY Aseriousinjury, which mayappear to be a simple cut, caused by high pressure injection of
CAUTION Alerts usar to avoid or correct conditions which
could cause damage to or destruction of equipment.
fluid directly into the body.
PRESSURE RELIEF PROCEDURE A safety procedure for
relieving air and fluid pressure in the system.
HOW THE ELECTROSTATIC (ES) AIR-ASSISTED AIRLESS 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 13) to help control the pattern size.
The turbine generates power which 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 workpiece, 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 differs from
the conventional air spray gun in that Increasing the
fan air reduces the pattern width. To Increase the pattern width, less fan air or a larger size tip must be used.
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SERIOUS BODILY INJURY, EXPLOSION, FIRE, OR ELECTRIC
SHOCK CAN OCCUR IFTHE PRECAUTIONS BELOW ARE MOT
FOLLOWED.
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READ AND UNDERSTAND ALL INSTRUCTION MANUALS,
TAGS, AND WARNING LABELS BEFORE OPERATING EQUIPMENT.
ELECTROSTATIC EQUIPMENT SHALL ONLY BE INSTALLED
AND USED BY TRAINED, QUALIFIED PERSONNEL WHO
SHALL BE FULLY CONVERSANT WITH THE REQUIREMENTS
STATED WITHIN THIS INSTRUCTION MANUAL.
FLUID INJECTION HAZARD
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General Safety
This equipment generates high fluid pressure. Spray from the
gun, leaks or ruptured components may inject fluid through
your skin and into your body and cause serious bodily injury,
including the need for amputation. Also, fluid injected or
splashed into the eyes or on the skin can cause serious
damage.
NEVER point the spray gun at anyone or at any pan 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.
ALWAYS follow the Pressure Relief Procedure, at right,
before cleaning or removing the spray tip or servicing any
system equipment.
NEVER try to stop or deflect leaks with your hand or body.
Be sure equipment Safety devices are operating properly
before each use.
Dfluser
The gun diffuser (pan of ball seat housing 218-6881 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, and then remove the
spray tip. Aim the gun into a grounded metal pail. With the
turbine air OFF, and using the lowest possible pressure, actuate the gun. If the fluid'emined is not diffused into an irregular stream, replace the ball seat housing immediately.
Spray Tip Safety
Use extreme caution when cleaning or changing spray tips. If
the spray tip clogs while spraying, engage the gun safety latch
immediately. ALWAYS follow the Pressure Relief Procedure and then remove the spray tip to clean it.
NEVER wipe off build-up around the spray tip until pressure is
fully relieved.
Medical Alert- Airless Spray Wounds
If any fluid appears t o penetrate your skin, get EMERGENCY
MEDICAL CARE AT ONCE. DO NOT TREAT A S A
SIMPLE CUT. Tell the doctor exactly what fluid was injected.
Note to Physlclen: Injection in the skin is a traumatic injury. It is Important t o treat t h e injury surglcally as soon
ee possible. Do n o t delay treatment to research toxicity.
Toxiciiyis a concern with some exotic coatings injected
drectty into the blood stream. Consultation with a plastic
surgeon or reconstructive hend surgeon may be advisable.
Pressure Relief Procedure
To reduce the risk of serious bodily injury, including fluid injection, splashing in the eyes or on the skin, or injury from moving parts or electric shock, always follow this procedure when
shutting off the system, when checking or servicing any pan
of spray system, when installing, cleaning or changing spray
tips, and whenever you stop spraying.
1 . Turn off all the air t o the gun except the cylinder (actuating) air.
2. Turn off the fluid suooiv t o the oun.
3. Actuate the gun into a groundeimetal waste container to
relieve fluid pressure.
4. Open the pump drain valve. having a grounded metal waste
container ready to catch the drainage.
5. Leave the pump drain valve open until you are ready t o
spray again.
If you suspect that the tip or hose is completely clogged, or
that pressure has not 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.
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Bleed- Type Air Shutoff V a l v e and F l u i d Drain
Valve Required
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 pans 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 t o 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 t o
relieve pressure may not be sufficient.
EQUIPMENT MISUSE HAZARD
General Safety
Any misuse of the spray equipment or accessories, such as
overpressurizing, modifying parts, using incompatible
chemicals and fluids, or using worn or damaged pans, can
cause them t o rupture and result in fluid injection or other
serious bodily injury, fire, explosion or propeny damage.
NEVER alter or mo& any pan of this equipment: doing so
could cause it t o malfunction.
CHECK all spray equipment regularly and repair or replace
worn or damaged pans immediately.
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gun or any other component or
used in the system,
Read and follow the fluid and solvent manufacturer's literature
regarding the use of protective clothing and equipment,
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FIRE OR EXPLOSION HAZARD
All parts of the electrostatic spray system must be properly
grounded to reduce the risk of static electricity discharge.
Static electricity is created by the high velocity flow of fluid
through the pump and hose and the spray gun's internal
power supply. Ungrounded objects can become electrically
charged and sparking may occur. Sparks can ignite fumes
from 8olvents. fluid being sprayed, dust particles and other
flammable substances, which can cause a fire or explosion
and result in serious bodily injury and propem/ darnage.
If you experience any sparking or feel even a slight shock,
STOP SPRAYING IMMEOIATELY. Check for proper grounding of the entire system. Be sure you have corrected the problem before starting to spray again.
Groundlng
Following are the 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 t o a true earth
ground.
1. Pump: ground by using a ground wire and clamp as
described in your separete pump instruction manual.
2. Air compressors and hydraulic power supplies: Qround
according t o the manufacturer's recommendations.
3. R o A A W gun: obtain grounding through connection
to a properly grounded air supply hose. Use only the
GRACO GROUNDED AIR SUPPLY HOSE; see page 23 to
order. Connect the air hose ground wire t o a true earth
ground.
4. Fluid supply container: according to local code.
5. Object being sprayed: keep workpiece hangers clean and
grounded at all times. Contact points must be sharp points
or knife edges.
6. A l l electrically conductive objects or devices, including
paint containers and wash cans in the spray area, must be
properly grounded.
7. All persons entering the spray area: shoes must have con-
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.
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ductive soles, such as leather, or personal grounding straps
must be worn. Rubber or plestic soles are not conductive.
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6. The floor of the spray area must be electrically conductive
and grounded. Do not cover the floor with cardboard or
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any non-conductive material which would interrupt
grounding continuity.
9. Flammabla liquids in the spray area must be kept in approved, grounded containers. Do not store more than the quenthy needed for one shift.
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10. AN 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.
!
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Rushing and Cleaning Safety
To reduce the risk of a fluid injection injury, static sparking, or
splashing, always follow the Pressure Relief Procedure on
page 2 and remove the spray tip before flushing. Use lowest
possible pressure and use a grounded metal waste container.
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Be sure the turbine air (electrostatics) is OFF during flushing.
N N E R usa solvents having a flash point of less than 21OC
(70°F) to clean the gun. NEVER use solvents having a flash
point of less than 38% (lOO°Fl t o clean the spray system.
A i WAYS remove all solvent from the system before reactivating the spray gun.
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Use only non-sparking tools to clean residue from the booth
and hangers.
Ventilate t h e Spray Booth
To prevent hazardous concentrations of toxic and/or flammable vapors. spray only in a properly ventilated spray booth.
N N E R operate the spray gun unless the ventilating fans are
operating.
HOSE SAFETY
Pressurized fluid contained in the hose can be dangerous. If
the hose develops a leak, split or rupture due to any kind of
wear, damage or misuse, the high pressure spray emltted from
it can cause a fluid injection injury or other serious bodily injury
or property damage.
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exist. replace the hose immediately. DO NOT try t o 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.
DO NOT expose Graco hose to temperatures above 8 2 O C
(180OF) or below - 4 O O C (-4OOFI.
NEVER use a damaged hose. Before each use, check entire
hose for cuts, leaks, abrasion, bulging cover, or damage or
movement of the hose couplings. If any of these conditions
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IMPORTANT
United States Government safetystandards have been adopted underthe Occupational Safetyand Health Act. Thesestandards-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.
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TYPICAL INSTALLATION
INSTALLATION
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NON-HAZARDOUS LOCATION
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HAZARDOUS LOCATION
KEY
A
S
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F
Air Supply Shutoff Valva lblaed-hlpe)
Air b Water Separator
Bell valve
Air Line Lubricator
Air Reaulator
Pump-
0
W
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K
L
N
Fluid Filter
Drain Valve
Grounding Wire
Air Filter (40 micron)
Fluid Regulator
The Typical Installation shown above is only a guide for
selecting and installing equipment for an elactrostatic
air-assisted airless spray system. It is not an actual
system design. Contact your Graco representative for
custom-designed systems information.
The pump you use should have e msximum working
pressure of 88 bar 1950 psi). If the pump you are using
has a higher maximum working pressure, you must use
a regulator to limit the pressure to 66 bar (950 psi).
Graco's 1 0 1 Ratio Monark Pump, Part No. 217-523,
may be used in this system. See Accessories.
P
(1
ES Automatic Gun
Normally Closed. 3-Way Air Solenoid
Valve or 3-Way Manual Valve
Exhaust Hose
Ventilate the Spray Booth
W
-IARN
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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.
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Installing end servicing this equipment requires
access to parts which may cause electric shock or
other serious bodilv iniurv. Do not instell or service
this equipment unl& you are trained and
qualified.
Be sure your installation complies with national,
state and local codes for the installation of electrical epperatus in a Class 1, Group D, Divisions 1
and 2 Hazardous Locatlon.
Wernlng Slgns
A warning sign in English and one in Spanish is supplied
with the gun. Mount the signs in the spray srea where
they can easily be awn and read by all operators. This
sign is also available in French end German. See the Accmsories section on page
4
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23.
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1910.107(b) (5) (i).
Check and follow all of the national, state and local
codes regarding air exhaust velocity requirements.
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NOTE:
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High velocity air exhaust will decrease the
operating efficiency of the electrostatic
system. Air exhaust velocity of 31-46 linear
meterslminute (100-150 ftlmin) should be
sufficient.
i.
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 workpiece.
Connect the Air Lines (See Typical Installation)
WARNING
To reduce the risk of electric shock or other
serious bodily injuw, the Turblne Alr Supply
Hose must be electrically connected to a true
earth ground. Use Only Graco Electrlcally 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 on page 23 for ordering the
hose.
1. Install an air filter (K) and an air and water separator'
(6) on the main air line to ensure a d+; 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.(Dl close to the pump.
3.
Install a normally closed, 3-way air solenoid (PI or
manual valve on the turbine, cylinder and remote
fan (optional) air supply lines.
4.
Install an air regulator (El on the pump, turbine,
atomizing, cylinder and remote fan (optional) air
supply lines to control air pressure to the pump and
gun.
5.
Install a bieed-type air shutoff valve (A) on the main
air line and the pump, turbine, atomizing, cylinder
and remote fan (optional)air supply lines to shut off
air to the pump and gun. See Bleed-Type Air
Shutoff Valve and Fluid Draln Valve Required,
page 2.
4. Connect the fluid line to the 318 npsmlm) gun fluid
inlet.
CAUTION
Do not use metal fittings at the gun barrel. For circulation systems, use plastic fittings.
Check the Electrical Grounding
ARNING
Proper electrical grounding of every part of your
system is essential. For your safety, read the
warning section, FIRE OR EXPLOSION
HAZARD. on page 3. Then ground the system es
explained in that section and below.
1. Shut off all air spray lines to the gun.
2. Turn off fluid supply t o the gun.
3. Have a qualified electrician check the electrical
grounding continuity of the spray gun and air hose.
a.. With the electrically conductive air hose connected (see COMeCt the Air Lines at left) and
properly grounded, use a megohmmeter (see
ACCESSORIES on page 22) to measure the
resistance between the gun handle and a true
earth ground. Use an applied voltage of not less
than 500 minimum to loo0 volts maximum. See
Fig 1.
NOTE:
b. If the resistance is greater than 2 megohms,
check the tightness of the ground connections,
and be sure the air supply hose ground wire is
connected to a true earth ground. If the
resistance is still greater than 2 megohms,
replace the air supply hose.
TRUE EARTH GROUND
6. Connect the cylinder air line to the gun's cylinder air
inlet (marked CYL).
7.
If the air hose is not grounded, you will get a
false reading.
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rMEGOHMMETER
Connect the atomizing air line to the gun's atomizing air inlet (marked ATOM).
8. Connect the turbine air supply line to the gun's
1/4-18 npsm (LHI air inlet (marked ES). Connect
the hose's ground wire to a true earth ground.
9. 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 6.
Connect the Fluid Line (See Typical Installation)
1. Blow out the fluid line with air and flush it with solvent before connecting it to the gun. 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 (GI and drain valve (HI at the
Flg 1
pump outlet. The drain valve assists in relieving
fluid pressure in the displacement pump, hose and
gun. See Bleed-Type Alr Shutoff Valve and
Ruld Drain Valve Required, page 3.
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Installing the Optional Remote Fen Air Adapter
3. Install the 90° elbow (part no. 108-234) in the
NOTE: See ACCESSORIES to order the Remote
Fan Air Adapter 181-053 and 90° Elbow
4.
108-234.
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adantnr.
Install the remote fan air line, solenoid valve. air
regulator and shutoff valve as instructed in Connect the Air Lines. on Derie 6.
Apply PTFE
tape to the threads of the remote
fan air adapter (part no. 181-0531and install it in the
gun body (1). Torque the adapter to 1.1-1.4 N m
(10-12 in-lb).
2.
OPERATION
lief Procedure on page 2 when shutting off the
system, when you stop ,spraying, and before
checking, servicing, installmg, cleaning or changing any part of the system.
Operating Checklist
Check the following list daily, before using the system, to
help ensure you of safe, efficient operatlon.
- 1.
Be sure all operators are properly trained in the
safe operation of an air-assisted airless electrostatic spray system.
-2.
Be sure all operators have been trained on how
to properly and completely relieve system
pressure.
-3.
Be sure the system is thoroughly grounded. See
Fire or Explosion Hazard on page 3, and Check
the Electrlcal Grounding on paga 5.
-4.
Be sure the operator and all persons entering the
spray area are grounded. Shoes with conductive
soles. such es leather, or personal grounding
straps must be worn. Rubber or plastic soles are
not conductive.
-5.
Be sure all conductive objects within 6 rn (20 f t l
of the gun are electrically grounded and the floor
of the spray area is electrically conductive and
grounded.
-6.
Be sure theventilation fens are operating properly.
-7.
Keep the workpiece hangers clean. Contact
points must be sharp points or knife edges.
-8.
Be sure all refuse is removed from the spray
booth.
-9.
Be sure ell flammable liquids in the spray booth
are in approved, grounded containers.
Filter the Fluid
Filter the fluid to be sprayed to remove coarse particles
and sediment which could clog the spray tip. See Fig 5.
Selecting e Spray Tip
This gun is supplied with Spray Tip 219-411. See Spray
Tip Selection Chert on page 23 for the description.
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The fluid output and fan width depend on the spray tip
size, fluid viscosity and fluid pressure. If your application requires a different tip, use the Spray Tip Selection Chart to select the appropriate spray tip.
lnstalllng e Spray Tip
Place the tip (10) in the air cap (91. aligning the tab of
the tip with the groove in the air cap. Be careful not to
damage the electrode wire (GG).Place the air cap
assembly on the gun and screw on the retaining nut (81
flrmly to prevent leakage between the tip and ball ssst
housing. See Fig 4. The eir cap and spray tip position
determines the direction of the spray pattern. See Fig 2.
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
serious bodily injury, fire, or explosion, be sure
the electrode wire is properly installed in the gun
(see page 151 and is not bent or damaged before
operating the gun.
Adjust the Spray Pattern
1. Adjust the fluid pressure. Turn on the fluid to about
21 bar (300 psil. Trigger the gun to check the
atomlzetlon; don't be concerned about the pattern shape yet. 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.
2. Close the fan adjusting knob IAA) by turning it fully
counterclockwise.
VERTICALSPRAY PATTERN
HORIZONTALSPRAY PATTERN
Fig 2
3. Set the atomizing air pressure to 3.1 bar (45 psi).
4. Complete the Operating Checklist to the left and
then turn the turbine air on.
NOTE: A minimum of 2.8 bar (40 psil air supplv is
required at the gun to ensure full voltage
from the power supply. The fan and
atomizetion air can be adjusted as your application requires.
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5. Check the spray pattern, then adjust the air
pressure until all the tails are completely atomized
and pulled into the spray pattern. Refer to Fig 3. For
a narrower pattern, try turning the fan adjusting
knob (AA) clockwise. If the pattern is still not narrow enough, increase the air line pressure slightly (if
you have a separate fan air line) or use a different
size tip.
NOTE:
Be careful not to damage the electrode by jamming it into an object when operating or setting
I down
C the gun.
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Cleaning
A remote fan air adaoter is available to control
the fan air at the 'control booth. See ACCESSORIES.
WARNING
Relief Procedure on page 2 when shutting off
the system, when you stop spraying and before
checking, servicing, installing, cleaning or chang-
34 Fluid Connector
56
Fluid Filter
38 Filter Retainer
NO AIR
TOO LITTLE AIR
Rg 3
RIGHT AMOUNT
OF AIR
Spraying Operatlon
This gun has a built-in lead and lag operation. The gun
begins emitting air before the fluid is discharged and the
fluid stops before the air flow stops. This helps prevent
fluid buildup on the air cap and assures the fluid is
atomized.
1.
c.
See the Spray Pattern Troubleshootlng Chart in the
Service section for additional information.
NOTE:
Unscrew and remove the fluid connector (34).
b. Remove the filter (361 and clean thoroughly in a
compatible non-conductive solvent.
Adjust the system's control device, if it is autunatic, so
the gun starts spraying just before meeting the workpiece, and stops as soon as the workpiece has passed.
When all adjustments of atomizing air, fluid pressure,
and fan pattern are made, operation can begin.
Clem the fluid filter (361 daily. See Fig 5.
a.
Reinstall the filter and connector. Do not overtighten the connector, which could distort the
filter.
2. Clean the outside of the gun daily with a soft cloth
dampened in a compatible solvent.
CAUTION
When spraying the ES indicator lights (BE)
should glow, indicating the electrostatic
charge. See Fig 4.
Be careful not to damage the electrode by cetching the cloth on it when wiping off the gun.
3. Clean the spray tip (10) and eir cap 191 daily,
minimum. Some applications require more frequent
cleaning. Replace the 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;
c.
Use a soft brush or other soft tool, with an air
blow gun, to clean the air cap passages. Take
care not t o scratch any surfaces. If the air cap
holes are plugged, a round toothpick can be used to unplug the holes, without damaging the
air cap.
"-----------WARNING
To avoid damaging the ball seat housing resistor,
10 i u l a i i p
16 Trimer Adlustlno Nut
,
use a soft bristle brush dipped in solvent to clean
it; DO NOT soak it in solventl A damaged resistor
wil impair the electrical continulty and could
result in electrical discharge, which could cause
serious bodily injury, fire, or explosion.
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4.
Check the electrode wire (GGI. See Fig 4.
Straighten if bent, and replace if broken or damaged. See Electrode Wire Replacement, page 15.
Flushing
5. Remove all loose or ungrounded objects from the
spray booth.
6.
Check ell of the work hangers for build-up of
material; clean them, if necessary.
7.
Clean the fluid filter and air line filter.
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.
Do not use any cleaning method which may
allow solvent into the gun air passages. Clogged air passages ceuse poor e!omization and excessive current demands. Pomt the gun down
while cleaning to prevent dirty solvent from running back into the air passages. NEVER IMMERSE
THE GUN IN SOLVENT.
Clean all parts with a non-conductive solvent,
compatible with the fluid being sprayed. Conductive solvents can cause the gun to malfunction.
8
307-726
1. Be sure the turbine air (electrostatics1is OFF during
flushing.
2.
Disconnect and plug the fluid supply line.
3. Connect the solvent supply to the gun.
4. Run solvent through the gun.
5. Disconnect the solvent supply.
6.
Reconnect the fluid supply line.
7. Actuate the gun until it is clean of solvent.
SERVICE
WARNING
Installing and servicing this equipment requires access to parts which may cause electric shock or other serious
bodily injury. Do not install or service this equipment unless you are trained and qualified.
WARNING
Pressure Relief Procedure
To reduce the risk of serious bodily injury, including fluid injection, splashing in the eyes or on
the skin, or injury from moving parts or electric
shock, always follow this procedure before servicing any part of the gun or system.
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.
NOTE:
4. Open the pump drain valve, having a grounded
metal 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 not 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.
I
Check all possible remedies in the Troubleshooting Charts before disassembling gun.
SPRAY PAlTERN TROUBLESHOOTING CHART
PROBLEM:
IMPROPER
SPRAY PAlTERN
CAUSE
SOLUTION
Insufficient fluid in tank.
Fill tank.
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 to gun is too low.
Increase air.
Fluid pressure too low.
Increase fluid pressure.
Irregular pattern
!
I
10
307-726
-
GUN OPERATION TROUBLESHOOTING CHART
PROBLEM
CAUSE
SOLUTION
Air leakage from front of gun.
Piston Assembly (25, 24, 22, 5 9 ) not
seating properly.
Clean, service.
Worn or broken O-ring 159).
Replace O-ring ( 5 9 ) .
Air stem packing (19) too tight.
Loosen packing 119).
Loose fluid
lighten retaining nut; hand torque firmly.
Fluid leakage from front of gun.
;'Orange Peel" finish.
tip (10).
Fluid tip washer (loa) worn or missing
Replace washer (loa).
Loose or worn ball seat housing (11).
Tighten or replace ball seat housing (111.
Insufficient air pressure.
Increase, use least air pressure needed
for good results.
Using too large of a fluid tip (101.
Use a smaller size tip.
Paint viscosity too high.
Thin paint or use larger fluid tip.
Fluid poorly mixed or filtered.
Remix or refilter fluid.
Improper thinner being used.
Use proper thinner.
Too much air pressure.
Reduce, use least air pressure needed
for good results.
Fluid thinned too much.
Properly thin fluid.
Fluid low.
Check, add fluid if necessary.
Dirty or clogged fluid tip (10).
Clean fluid tip (10).
Damaged fluid tip 110).
Check, replace fluid tip (101.
Broken fluid needle shaft (141.
Replace needle (14).
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 203-305mm
16-12 in.).
Worn or broken O-ring 17.2).
Replace O-ring (22).
-.
Excessive spray fog.
No fluid sprays from gun.
Equipment covered with paint.
Gun still actuated after cylinder air
shut off.
See Electrical Troubleshooting on page 12.
307-726
11
ELECTRICAL TROUBLESHOOTING CHART
PROBLEM
CAUSE
SOLUTION
Poor wrap-around.
'Turbine alternator (2a) not
operating (no audible whine).
Check air supply to turbine. Check
for dirt or moisture in turbine.
Improper distance between gun and
workpiece.
Adjust spraying distance to
203-305 mrn (812 in.).
Parts poorly grounded.
Clean workpiece hangers. Check for
proper ground on conveyor or track.
High booth exhaust velocity.
Reduce, within code limits.
Too high atomizing air pressure.
Reduce air pressure.
*Too low fluid resistivity.
Check fluid resistivity with paint
meter and probe (refer to instrue
tion manual 307-2631.
* ~ a u ~gt yi n resistance.
Check gun resistance. See page 11
"Faulty resistor stud resistance.
[Resistor part of ball seat housing
Check resistor stud resistance. See
page 11.
'Faulty power supply 14) resistance..
Check power supply resistance. See
page 11.
'Faulty spray tip assembly (10).
Replace spray tip assembly W .
'Faulty turbine alternator 1%).
Be sure plug 12c) is in place on
back of turbine alternator housing
12a). Remove and test turbine alternator. See Service Section. Replace
turbine alternator if necessary.
Operator not properly grounded or
is close to ungrounded object.
Be sure floor is properly grounded.
Wear shoes with non-insulating
soles. Be sure operator is not in
contact with or carrying (in
clothing) any rnetalic items which
could build-up electric charge.
Gun not properly grounded.
Be sure Graco air supply hose is being used and is properly grounded.
Workpiece not properly grounded.
Clean workpiece hangers. Check for
proper ground on conveyor or
track.
111)l
berator gets mild shock.
lperator gets mild shock when
ouctiing workpiece:
'ES indicator lights not "ON" when gun is triggered.
12
307-726
307-726
13
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 the components.
Use megohmmeter 218-979 (see ACCESSORIES) and
an applied voltage of 500 volts to complete these electrical tests.
If the resistance is outside the specified range, remove
the electrode wire (GG). See Electrode Wire Replacement page 15. Measure the resistance between the
conductive rod IFF) and the resistor (LL) in the outside
diameter of the ball seat housing (11).
The resistance should be 20-30 megohms. If the
resistance is correct, the electrode wire (GG) is defective and must be replaced. If the resistance is still outside the specified range, the resistor is defective and the
ball seat housing (11) must be replaced. See page 15.
MEGOHMMETER
Teat Gun Resistance (See Fio 6 )
NOTE: Check the re&tance with the gun triggered
-.
and untriggered.
Measure the gun resistance between the end of the gun
electrode wire and the air inlet adapter (67). Insert the
lead from the electrode wire into the hole closest to."€"
on the megohmmeter. Insert the lead from the air'inlet
into the second hole to the right of "L" on the megohmmeter. The resistance should be between 115-152
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 12 for other possible causes of poor
performance.
Fig 6
KEY
EE
2
Za
4
4c
Connector Prong
Power Cartridge
Turbine
Power Supply
Spring
Test Power Supply Resistance (See Fig 7)
Remove the power cartridge (2) from gun body (1). See
Power Cartridge Replacement on page 17.
Remove the turbine alternator (2a)from the power supply (4). See Turblne Alternator Removal on page 18.
Measure the resistance from the center prong IEE) in
the power supply to the spring l4c) on the other end of
the power supply. Insert the lead from the spring into
the hole closest to "E" on the megohmmeter. Insert the
lead from the center prong into the second hole tothe
right of "L" on the megohrnmeter.
The resistance should be 95-122 megohms. If the
resistance is outside the specified range, the power supply is defective end must be replaced. If the resistance
of the power supply is correct, proceedto the next test.
Test Resistor Stud Resistance (See Fig 8 8 9)
Insert a conductive rod (FF) into the gun barrel (removed for the power supply test) and against the metal contact IAA) molded into the front of the barrel.
Measure the resistance between conductive rod (FF)
and the gun electrode wire (GG). Insert the lead from
the electrode wire into the hole closest to " E on the
megohmmeter. Insert the lead from the conductive rod
into the second hole to the right of "L" on the megohmmeter. The resistance should be 20-30megohms. If the
resistance is correct, refer to the ELECTRICAL
TROUBLESHOOTING CHART on page 12 for other
possible causes of poor performance, or contact the
nearest authorized service agency.
Flg 7
Metal Contact
Electrode Wire
Conductive Rod
Gun Housing
307-726
h
FF
Fig 8
MEGOHMMETER
KEY
FF Conductive Rod
.."".".".
LL m - i a n .
11 Ball Seat
Fig 9
14
4c
MEGOHMMETER
KEY
AA
GG
FF
12
MEGOHMMETER
L
i
Gun Repalr
WARNING
To reduce the risk of serious bodily injury, including fluid injection, splashing in the eyes or on
the skm, or injury from moving pans or electric
shock, always follow the Pressure Rellef Procedure Warnlng on page 10, before servicing
any part of the gun or system.
Ball Seat Houslng 8 Raslator Replacement
(See Figs 10 e 111
Unscrew the retaining nut (81. Remove the air cap (91
and spray tip (10).
Insert the special wrench (SIin the front of the gun.
While triggering the gun, unscrew the ball seat housing
(11) and remove
it.
s c c m to parts which may cause electric shock or
other serious bodily injury. Do not install or service
the equipment unless you are trained and
If you are replacing the fluid needle assembly, do not
reassemble the gun. If no further service is required, install the new housino in the reverse order of
disassembly. Torque thsball seat housing to 1.1~N m
(10 in-lbl (snug); DO NOT OVERTIGHTEN.
CAUTION
DO NOT OVERTIGHTEN the ball seat housing
(11I. Excess torque will dame@ the housing.
CAUTION
ALWAYS remova the gun from the worksite for
service or repair. The service or repair area must
be kept clean to prevent contaminating the parts
~.
with dirt.
If the plastic parts of the gun must be held securely, ALWAYS clamp them in padded vice laws to
prevent demage to the parts.
..
.
.-.:
I. ..,
..
KEY
11 Ball Seat Housing
ffif Wrench
ALWAYS lubricate the O-rings and seals with petroleum jelly to prevent damage during installation.
1.
Flush the gun. See page 8. Follow the Pressure
Rellef Procedure Warnlng on page 10.
L
2. Disconnect the fluid supply hose from the gun.
...: ;
,+.
.: ..
.. ..
f
3. Disconnect the air supply lines from the gun.
Electrode Wlre Replacement (See Fin 10)
Unscrew the retaining nut (8). Removethe air cap (9)
and spray tip 1101.
Use a needle nose pliers to gently pull the electrode wire
(GG) out the back of the spray tip. 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 wire with the other
hole in the tip. Pull on the front of the wire to seat
A
box of 10 electrodes is included in the tool kit (55).
it.
KEV
L
Fig 10
Fig 11
307-726
15
Gun Housing Removal (See Figs 12, 13, 14 & 15)
Remove the retaining nut, air cap, and spray tip.
Unscrew the fluid tube connector (FF) at the bottom of
the fluid tube (37).then pull the tube out of the inlet.
If you are replacing the needle, insert the special wrench
(Sf)
in the front of the gun. While triggering the gun, unscrew the ball seat housing (11) and remove it. See Fig 11.
NOTE:
Before removing the trigger adjusting nut
(151, be sure to note its position for
reinstallation.
Remove the trigger (161 by removing the screws 1 3 3 )
and trigger adjusting nut (15) from the gun.
Remove the ES indicator lights (43). Then, using the
wrench (55~).supplied, loosen and remove the two
socket head capscrews ( 4 4 1 from the gun.
If the ball seat housing 111) was removed, insert the
pressing tool (55e) in the front of the gun and gently
push the needle back. Then slide the trigger 116) into
place and install the screws (33). Remove the tool.
Press the trigger and install the trigger adjusting nut (15)
to its previously noted position.
Reinstall the ball seat housing (see page 15). air cap,
spray tip and retaining nut.
i'
\
KEY
2 Power Cartridge
6 Gasket
12 Gun Housing
Hold the gun body (1) with one hand and pull the gun
housing (12) straight up to remove it.
- ~.
IC
To avoid damaging the power cartridge (2).
always pull the gun housing (121 straight up. If
necessary, gently move the gun housing from side
to side to free it from the gun handle.
Leave the gasket (5) in the gun body (1) if you are not
replacing it. Perform whatever service is necessary.
then reinstall the gun housing as follows.
Gun Housing Reassembly (See Fig 12, 13, 14 & 151
If the needle assembly was removed, reinstall it as described on page 17. Be sure the gasket (5) is in place on the
gun body (11. Place the gun housing (12) over the power
cartridge (2) and position it onto the gun body (1).
...,..
..
.
Fig 13
Install the two socket head capscrews (44)end tighten
with the wrench ( 5 5 c ) . Push the ES indicator lights 143)
into place over the capscrews (44).
Insert the fluid tube (37)into the fiuid inlet fitting, making sure the washer (37al is in place, and tighten the
fluid tube connector IFF).
Fig 12
16
307-726
I
Fig 14
:
Ruld Needle Replacement (SeeFig 15 b 16)
Remove the gun housing (121 8s instructed on page 16.
If the power cartridge 12) comes out, carefully press it
back into the handle.
Insert the narrow end of the pressing tool (5%) through
the front of the gun to push the needle back, then remove the nut (17) and the adjustment nut (14a). Press
the needie assembly (14)out the front of the gun as far as
you can with a finger, or by pressing it against a fiat surface. Then use the wrench ( 5 5 d to finish pushing it out.
KEY
FF Connector
14 Needle Assembly
14a Adjustment Nut
17 7
7
Power Cartridge Replacement (Sea Fig 17)
CAUTION
The power cartridge (2) is fragile. Use care when
handling it to avoid damaging it.
DO NOT USE solvents to clean the power cartridge cavity in the gun body (1). Solvents will
damage the electrical components in the power
cartridge.
4a.
. .
All O-rings Ub,
4b) and the compression spring
(4c) must be in place when reassembling the gun,
or it will malfunction.
Remove the gun housing (12). See page 16. Remove
the gasket (5) from the gun body (1).
Grasp the power cartridge with your hand and use e
gentle rocking motion to free it from the gun body (1).
Then pull the power cartridge (2) straight out of the
handle.
rC
..:
Be sure the power cartridge cavity in the gun body
(1) is very clean and dry. Moisture and other contaminants may damage the electronic circuitry.
Inspect the power cartridge cavity in the gun body (1)
for dirt and moisture. Clean the cavity with a clean, dry
rag, if necessary. Don't use solvent.
Fig 15
Remove the nut ( 1 4 ) 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.
Reinstall the new adjustment nut ( 1 4 ) . hex end first,
onto the needle. Use the pressing tool (5%) to press on
the needle from the front of the gun, then screw the edjusting nut ell the way to the bottom of the fhreads.
Remove the tool. Screw the other nut (17) firmly
against the adjustment nut to ''lock'' them together.
Reassemble the gun as described in Gun Houslng
Reassembly on page 16.
4a.
Lightly lubricate the O-rings (2b.
4 b ) on the new
power cartridge with petroleum jelly.
. ..
Insert the new power cartridge (2)in the gun body. Fig
17 shows the alignment of the power cartridge in the
gun body.
Install the gasket (5) in the gun body. install the gun
housing in the body. See page 16.
KEY
1 Gun Body
2 Power Cantidge
BOTTOM
2
..
Fig 17
KEY
1 6 Adjustment Nut
17 Nut
S a Pressing Tool
307-726
17
:
Turblne Alternator Removal (See Fig 18)
Remove the power cartridge (2)from the gun body as
instructed under Power Cartridge Replacement.
Carefully twist the turbine alternator (2a) counrerc/ockwise and pull it off the power supply, just until it is
disengaged from the coupling. Then continue to slowly
pull the turbine alternator away from the power supply,
disconnecting the 3-wire connector (HH). '
Using ohmmeter 218-979, test the coil in the turbine
alternator (2a). With the ohmmeter set at Rxl scale,
measure the resistance between the two outer terminals
of the %wire connector (HH). The resistance should be
3-5 ohms. If the reading varies from this value, replace
the alternator.
Measure the resistance between each outer terminal of
the 3-wire connector and the turbine alternator housing
(2aL The resistance should be infinite. If the resistance
is not infinite, replace the alternator.
Partially connect the 3-wire connector (HH) ontp, the
prongs inside the power supply (4).Use a small screwdriver to push the connector onto the prongs until it is
seated. 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.
Remove the old O-ring (45) from the screw (47).
Lubricate the new O-ring and the threads of the screw
(47)with petroleum jelly. Install the screw in the air
valve housing (48)counterclockwise.
Install the retaining ring (38) on the adjusting screw
147).Back the adjusting screw out of the valve housing
(48)until it bottoms out against the retaining ring (38).
i'
ApplyPTFE ape to threads of valve housing (48)and
install in the gun body (1). Torque the housing (48)to
1.1-1.4 N m (10-12in-lb).
Piston Removal and Repair (See Fig 20)
Disconnect the fluid hose (37) from the cover plate (32)
by screwing the nut IFF) off the connector 134).
Note the position of the trigger adjusting nut (15)for
reinstallation, then screw it off the piston shaft.
Remove the screws (31) and lockwashen ( 6 0 ) from the
cover plate 132). Remove the cover plate (32). spring
(271,and retainer cap (26).
KEY
38 Retaining Ring
39
46
48
47
Valve Seal
O-ring
Valve Housing
Adjusting Screw
Install the power cartridge (2)in the gun handle as instructed under Power Cartridge Replacement.
..
., .. ..:.
1.
1
i
I.
Unscrew and remove the air valve guide (18)and needle
packing (19)from the gun body (1).
Fig 18
Fan Air Valve Replacement (See Fig 19)
Turn the fan adjusting knob fully dockwise.
Place a wrench on the flats of the valve housing (48)
and remove from body (1).
Remove the retaining ring (38).Rotate the air adjusting
screw (47)clockwise until it is disengaged from the
valve housing threads. Pull the adjusting screw (47)out
of the valve housing (48).
Clean all the parts and inspect them for wear or
damage. If replacing the seal (39).unscrew it c/ockwise
and remove from adjusting screw.
Apply Loctite" No. 609 to small threads on end of adjusting screw (47)and install a new seal (39)(left hand
thread).
18
307-726
::
Push on the end of the piston shaft, and remove the
piston assembly.
NOTE:
DO NOT remove the u-cup packing (24)
from the piston shaft except to replace it as
removal will damage this packing.
Clean and inspect parts for wear or damage. Replace
parts as needed.
When reassembling the piston assembly, lubricate the
O-rings ( 2 2 & 5 9 ) 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).
Install the new packing (19)and guide (18)in the gun
body (1). screw the guide in loosely.
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.
!,,
1
!
I
!
i
i
I
1
KEY
FF Nut
1 Gun Body
16 Adjusting Nut
18 Guide
19 Packing
22 auna-N 0-Ring
24 U-cup Packing
ZS Piston
26 Retainer Cap
27 Spring
31 Screws
32 Plate
34 Connector
37 Fluid Tube
69 viton*
PTFE
Bo Lockwashem
I
I
I1:.
I
,,, .
..
. . ., ~.
Fig 20
*.
67
If replacing the u-cup pecking (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. Next
install the buna-N O-ring (22)and the Viton" O-ring ( 5 9 )
on the piston.
Install the piston assembly into the gun body (l),being
careful not to damage the piston's lip seal.
Install the retainer cap (26)into !he cover plate (32).Install the cover plate (321, spring I271 and retainer cap
(26)with the screws (31) and lockwashers (60).
i
30
. .:
.. ..
......:.
KEY
1 Gun Body
30 Disc Regulator
88
69
71
0-Ring
Air Valve
Washer
capscrew
Actuate the trigger, and tighten the air valve guide (18)
with a wrench.
m
n
Screw the trigger adjusting nut (15) onto the piston
shaft to its previously noted position.
Fig 21
Connect the fluid hose (37) to the cover plate.
~
1 Gun Body
Zl Muffler
4 Elbow
49 Tube
Disc Regulator 0-Ring Raplacemant (See Fig 21)
Unscrew the turbine air line from the adapter (67).
. ,.
Remove the capscrew (71) and washer (70) from the
gun body (1). Then pull out the adapter (67)with the air
valve (69).
Unscrew the adapter 1 6 7 ) from the air valve (69),and
remove the disk regulator (30).Clean and inspect parts
for wear or damage, and replace if necessaly.
Clean and inspect the t w o O-rings 1 6 8 ) end one O-ring
(66)on the air valve. Replace if necessary. Lubricate.the
O-rings with petroleum jelly.
Install the disc regulator (30)into the air valve (69) so its
beveled surface faces into the gun.
Screw the adapter (67) into the air valve (69).and install
the air valve into the gun body (11.
. .
Fig 22
Muffler Replacement (See Fig 22)
Remove the fan air valve assembly as instructed in Fan
Air Valve Replacement, page 18.
I
Remove the elbow (46) with the tube (491.
i
Screw the capscrew (71). with the washer (701, into the
gun body.
Remove the muffler 1211 with a hook, and replace with a
new muffler. Install the elbow 148).
Screw the turbine air line onto the adapter (67).
Install the fan air valve assembly 8s instructed in Fan
Alr Valve Replacement, page 18.
307-726
19
!
I
i
I
I
-
PARTS LIST
REF PART
NO. NO.
1
2
DESCRIPTION
ON
218-927 BODY, gun
218-111 POWER CARTRIDGE
1
1
217-591 .ALTERNATOR, turbine
Includes items 2b & 2c
1
2b '107-106 .O-RING: buns-N
2
2c
180-070 .PLUG
1
3
100-664 SCREW; 1/4-20
1
4
218-041 POWER SUPPLY, ES, 75 KV
includes items
4b b 4c
1
4a
*177-158 .O-RING: Viton"
1
4b
'106555 .O-RING: fluorocarbon
1
4c
178-504 .SPRING, comprassion
1
5
*179-387 GASKET.
housino
~1
6
T79-790 LABEL, warning "
1
8
218-695 NUT, retaining, air cap
1
9
21a715 AIR CAP
1
10
219-415 SPRAY TIP: 0.381 mm (0.015")
Includes item loa. See oaae
. " 23 fol
other pan numbers
1
-.
1Oa '164-769 .WASHER, non-metallic
1
11
220-613 HOUSING, ball seat: includes resistor 1
180-6!34
12
.
.. HOUSING, gun
1
12a
176-921 .PLUG; M3 x 0.5 x 8
1
13 **179-791 TAG, warning (not shown)
1
14
218-697 NEEDLE, fluid
includes item 14a
1
14a
176-938 .NUT, adjustment
1
15
180-927 NUT, adjustment, trigger
1
16
181-271 TRIGGER
....
..
1
17
105-689 NUT, mach, hex
1
18
176-941 GUIDE, valva, air
1
19
'106-901 PACKING, needle: PTFE
1
20
108-173 ELBOW, male
2
21
181-223 MUFFLER
1
22
*158-454 O-RING: buna-N
1
23
107-208 NUT, ferrule: 5/8-20 UN-26
2
24
*181039 PACKING, u-cup; UHMW
polyethylene
1
25
218-989 PISTON, shaft
1
26
181-178 CAP, retainer, spring
1
27
1w221 SPRING, compression
1
28
*107-305 O-RING: Viton
1
29
181-589 PLUG: w a i 8 n o m
1
AIR CAPS
.Must be ordered separately. Restrictor Kit, part no.
220-493 (see below), must be ordered and installed
when using the air caps.
2a
4a.
~
~
-
~
~~~~~
"
179-994 RESTRICTOR
107-414 SPRING, compression
,100-172 BALL: 3/16' diameter
30
31
32
REGULATOR, disc
SCREW, mach, pnh: M3x0.5~12
PLATE, cover
CONNECTOR, fluid
FILTER, tip, 0.005
*107-107
105330
180-924
180-706
205264
34
35
36
37
OTY
RETAINFR~
l
&
i
n
S
..- . . ....-. ., filter
...."
220-225 TUBE, fluid, nylon
1
4
1
1
1
1
Includes item
1
.WASHER. PTFE
2
38
RING, retaining, external
1
39
SEAL, valve
1
RESTRICTOR
42
-- . ...- . - ..
-2
43
LIGHT, indicator, ES
2
44
SCREW, cap, socket hd;
M5x0.8~12
2
45
'103-557 O-RING: Viton; color coded green
1
46
181-594 ELBOW. male. 9 0 O
1
47
180-714 SCREW; adju&ing
1
1
48
180-713 HOUSING. valve
49
054134
..- ......
53
180-060 SIGN, warning, English (not shown)
See ACCESSORIES to order French
or German
1
55
220-614 KIT, tool
Includes items 55a-55f
1
55E
105749 .BRUSH. cleaning
1
5%
177-732 .WRENCH
1
55.2
107-460 .WRENCH, barrel
1
55d
216-751 .ELECTRODES, box of 10
1
1810 9 5 .INSERT
5%
1
5M
163-107 .WRENCH, ball seat housing
1
59
*108-298 O-RING: Viton
1
60
108-340 LOCKWASHER, internal
4
82
180083 SIGN, warning, Spanish (not shown)
See ACCESSORIES to order French
OT German
1
63
177-128 SPACER
2
64
107-400 SCREW, trigger
2
65
104-282 O-RING; buna-N
1
66
105796 O-RING: Viton
1
67
181-598 ADAPTER; 1/4-18 npsm, LH
1
Ea
103-848 O-RING; Viton
2
89
1
181-597 VALVE: air
70
102-782 WASHER: plain
1
1
71
105-408 SCREW, cap, hex hd: M6 x 10 long
*Included in Repair Kit 2M 7 15.
37a
*164-769
105681
181-383
180-763
216-179
1W-lW
'*Extra warning tags and labels are supplied at no charge.
WARNING
Qty
2
2
2
. .. .
~
When servicing use only original Graco replacement parts. Use of other parts could. impair the
grounding contrturty of the gun.
High Air Flow Restrictor Kit 220-493
Must be purchased separately. Includes:
100
101
102
DESCRIPTION
See page 24 for "How To Order Replacement Parts".
Pert No. Description
Fine finish air cap (no pattern control)
220-379 High solids air cap
220-378
Ref No. Part No. Description
REF PART
NO. NO.
Repair Kit Po116
Must be purchased separately.
Includes:
Ref No.
2b
4a
4b
5
1Oa
19
22
24
28
30
37a
45
59
Qty.
2
1
1
2
1
1
2
1
1
1
2
1
1
307-726
21
. .
..,.
,:,
,.:.:/
.. :
... ,..
-
ACCESSORIES (Must be purchased separately)
The accessorles in this section have not been
tested by Factory Mutual.
AIR LINE FILTER
17.5 bar (250psil MAXIMUM WORKING PRESSURE
Never operate your equipment a t 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 LUBRICATOR
17.5 bar 1250psil MAXIMUM WORKING PRESSURE
214-847 3/8 npt(f)
214-848 1/2npt(f)
WARNING
HIGH VOLUME AIR REGULATOR 206-199
0-9 bar 10-125psi) Regulated Pressure
14 bar (200psi) Steel Pressure Gauge.
See instruction manual 306-972.
PAINT PROBE 722-860
Used with 722-886 paint resistance meter to measure
resistance of paint. See instruction manual 307-263.
(Not for use in hazardous areas.)
-.
PAINT RESISTANCE METER 722-888
Used with 722-860 measure resistance of paint. See instruction manual 307-263. (Not for use in hazardous
areas.)
106-148 3/8 npt(f)
106-149 1/2npt(f)
PARTS TO'CONVERT STANDARD FLUID
PRESSURE REGULATOR 236-661
TO 70 bar (lo00 psi) WORKING PRESSURE
COMPRESSION SPRING 501-511
*FLUID PRESSURE GAUGE 101-698
0-70 bar (0-lo00psi) range
MEGOHMMETER 218-979
500 Volt output; 0.01-ZOO0megohms
(Not for use in hazardous areas.)
RECIP. GUN MOUNTING BRACKET 725-973
NOTE: All safety barriers and interlocks are to be
supplied by the customer.
STATIONARY GUN MOUNTING STAND 722-562
WALL BRACKET 206-220
STATIONARY GUN MOUNTING BRACKET724-344
CART 208-210
3-WAY AIR VALVE 722-502
PUMP SUCTION HOSE 214-960
CONTROL PANEL 218-394
For one or two gun operation. Includes cabinet
mounted air regulator, air filter, three-way triggering
valve and air atomizing gauge. See manual 307-673.
DRUM SUCTION TUBE 206-268
FLUID FILTERS
207 bar 13000 psil MAXIMUM WORKING PRESSURE
214-5M with aluminum bowl and support.
218-029 with carbon steel bowl and support.
STAINLESS STEEL SCREENS
167-024
167-025
167-026
167-027
595 micron (30 mesh)
250 micron (60 mesh)
149 micron (100 mesh)
74 micron (200mesh)
. . .,,
,
UNIVERSAL GUN MOUNTING ROD 590-236
1 0 1 MONARK PUMP 217-523
66 bar 1950 psil MAXIMUM WORKING PRESSURE
PAIL SUCTION TUBE 165-767
'. .. .
!,
ELECTRODE WIRES 218-751
Box of 10 replacement electrode wires for the spray tip.
REMOTE FAN AIR ADAPTER 181453
1/8-27 npt(f)
To control fan pattern from the control booth.
Must also order:
108-234 90° Elbow; 1/8npt(m)
REMOTE SWITCH b SIGNAL LIGHT 728-386
FILTER'DRAIN VALVE 210-659
350 bar fswl, psil MAXIMUM WORKING PRESSURE
FLUID SHUTOFF VALVE 210657
350 bar fswl, psil MAXIMUM WORKING PRESSURE
FLUID PRESSURE REGULATOR 217-576
70bar (loo0 psil MAXIMUM WORKING PRESSURE
AIR PRESSURE REGULATOR 104-267
20 bar 13(M psil MAXIMUM WORKING PRESSURE
AIR PRESSURE GAUGE 101-180
014 bar (0-200psi) range
22
307-726
ELECTROSTATIC SYSTEM 231-038
Includes items:
218-928 Automatic Electrostatic AirlAirless Spray Gun
218-103 Grounded Air Supply Hose, 50 ft. (See page
23 for specifications)
214-697 Static Free Fluid Hose, 50 ft . (See page 23 for
specifications)
106-148 Air Filter, 3/8 npt
. .
! . ... ...
!
-
~~
ACCESSORIES (Must be purchased separately)
The accessories in this section have bean tested
by Factory Mutual.
STATIC FREE FLUID HOSE
Nylon Tube, Urethane Cover
207 bar (301x)
psi) MAXIMUM WORKING PRESSURE
Pert ID
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.
GROUNDED AIR SUPPLY HOSE, Polyurethane
7 bar IlW psi) MAXIMUM WORKING PRESSURE
6.35 mm (0.25in.) ID, 1/4 npsm(fbe1
220-444 1 m (4 f t ) long
218-100 5 m (15 f t ) lono
218-101 8 m i25 ftj l o n i
218-102 11 m I36 f t ) long
218-103 15 m (50 f t l long
220-119 23 m (75f t ) lona
220-120 30.5 m (loo ft) ibng
Length
No.
I
1
Thread
Slze
214-629 6.4 rnm (1/4") 4.6 m 115 f t )
210-540 6.4 rnm (1/4") 7.6 rn 1 2 5 ftl
210-541 6.4 mm 11/41 15.2 rn I50 f t l
1/4 npsmlf)
1/4 nptlmxfl
1/4 npsmlf)
1/4 npsmlfl
1/4 npsm(f)
114 nosmlf)
1/4 npsmlfl
114 nosm1f1
. .x
114 npt(rn)
1/4 npsmlfl
114 npsm(f1
114 npsrn(f)
I
I
WARNING SIGNS
180-060 Warning Sign (English)
180-061 Warning Sign (French)
180-062 Warning Sign (German)
180-063 Warning Sign (Spanish)
SPRAY TIP SELECTION C H A R T
*Light to
-
7.0
-
Part
Number
0.009 4-6 1100-1501
6-8 1150-200I
8-10 ~200-250j
219-209
219.309
219-409
(0.2)
219-211
219-311
219-411
219-511
219-611
6-10 1200-250)
10-12 1250-300)
12-14 (300-350)
0.017
219-213
E10 ~Mo250l
10-12 1250-300)
12-14 (300-350)
219-313
219-413
219-513
219-613
E10 (200-250)
10-12 1250-300)
12-14 ~300-350)
219-215
219-315
219-415
219-515
219-615
I
4-6 (100-1501
6-8 (150-200)
8-10 i200-2501
10-12 1250-300)
12-14 (300-350)
10-12 1250-3001
12-14 1300-3501
14-16 (350.4001
-
22.0
10.7)
I
17.0
(0.51
-
219-217
219-317
219-417
219-517
219-617
-
(0.6)
219-319
219-419
219-519
219-619
219-719
-
12-14 13003501
14-16 (350-400)
16-18 ~400-460)
219-621
219-721
219-821
12-14 (300-3501
14-16 ( 3 5 0 4 0 0 1
16-18 (400-460)
I
0.025 8.10 r2cn-250)
I
10-12 (250-300)
12-14 1300-3501
219-423
219-523
219-623
219-723
10.97)
50.0
11.51
I
42.0
11.21
I
219-425
219-525
I
Fluid Output at 600 psi (41 bar).
The fluid output ((11 at other pressures (P) can be calculated
by this formula:
0 = 10.0111 IQTI I P
).
Where QT = Fluid output (fl ozlrnin) 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. Maximum orifice size is
0.025".
307-726
23
SERVICE INFORMATION
HOW TO ORDER REPLACEMENT PARTS
Listed below by the assembly changed are OLD, NEW,
ADDED and DELETED parts.
1. To be sure you receive the correct replacement parts,
kit or accessories, always give all of the information
ASSEMBLY PART
CHANGED STATUS
Spray Gun
NEW
DELETED
ADDED
REF PART
NO. NO.
NAME
I
14 220.613 Housing
63 218696 Kit
63 220.614 Kit
10&234 Elbow
INTERCHANGEABILITY NOTE: The NEW parts replace
the OLD Darts listed directly above them. ADDED and
DELETED parts ere not interchangeable.
requested in the chart below.
2. Check the parts list to identify the correct part number;
do not use the ref. no. when ordering.
3. Order all parts from your nearest Graco distributor.
I
6 digit
PART
NUMBER
CITY
I
I
PART DESCRIPTION
1
I
I
I
. . ..
.~
, ...
I
1
.I
.. ...
..'. ,.
.
... . .
;.<. . :
. .
.. ..
24
307-726
TECHNICAL DATA
Operathg air pressure :0-7 bar (0-100 psi,
Fluid inlet:3/8 npsm(m1
Air inlets: Turbine-IN npsm(m) L.H.
Atomizing 8 Cylinder-114 npt(m1
Wetted parts: Stainless Steel, Acetal, UHMW
Polyethylene, N p , Carbide,
Tefon' , Delrin
d Delrin'
Loctite' is e registeredlrademark of the Loctite Corporation.
.
THE GRACO WARRANTY AND DISCLAIMERS
WARRANTY
Gram warranw 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 authorked Greco distributor to the original purchaser for usn. As purchaser's sole remedy for breach of this warranty, Graco will, for a
period of twelve months from the date of snle. repalr or replscnany pan of the equipment pmwn defective. This warranty applies only when the
l@
w Graco's written recommendations.
equipment is installed, operated and maintained in accordance
This warranty d-
not cowr, and Gram shall not be liable fo!, any malfunction, damage or wear wusad by faulty installation, misnppliwtion,
abrasion, corroslon, inadequatn or improper mamtananw, nngbgenw, acadent, wmpen'ng. or substitution of non-Grew cornpanent pam. Nor
shall Gram be liable fa malfunction, damage or w a r caused by the incompatibility wkh Graco equipment of mcblrns.eccnssories, equipment or materials'not supplied by Gram, or the improper design, manufacture, installation. operetion or maintenance of mctum, accessories, equipment or materials rum supplied by Gram.
This warranty is conditioned upon the prepaid,reblm of the equipment claimed to be defective for examination by Gram to wrii the claimed
defect. If the claimed defect is vetified, Gram will repair or replace free of charge any defective perhl. The equipment will be returned to the
original purchaser transponation prepaid. If inspection of the equipment does not disclow any d a f m in materiel or workmanship, repaim will be
made at e masoneMe charge, which chergeo may Include the the tost8 of parts, labor and transportation.
EaUIPMENT NOT COVERED BY ORACO WARRANN
GRACO MAKES NO WARRANTY, AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, WITH RESPECT TO ACCESSORIES, ECIUIPMENT, MATERIALS, OR COMPONENTS SOLD BUT NOT MANUFACTURED BY GRACO. These Items sold, but not manufactured by Graco (such as electric motor, switches, how. ntc.), are subject to the warranty, Y any. of their manufacturer. Greco wil pmvide purchaser with masonabla assistenca in m a k i i any claim for breach of these warranties.
t
Subsldbry mlf%ta
BlancherAtlanta. Dallaa, Detrolt. Lo8 An elaa. West Caldwall (N.J.)
Compsnlas:Canada; England; Swltrarknd: Fnnea; Oerrnany; Hong Konp; Japan
GRACO INC.
P. 0. Box 1441 MINNEAPOLIS, MN 55-1444
PRINTED IN U S A . m-RO 8-85 Revised aaS
..