Graco Inc 239786, 308813J, 233670, 308813, 241469 User Manual
Instructions – Parts List
CIRCULATING, HIGH PRESSURE
Automatic Airless
Spray Gun
4000 psi (28 MPa, 280 bar) Maximum Working Fluid Pressure
Part No. 239786, Series A
Standard Spray Gun
Includes GG0 series tip of choice
Part No. 241469, Series A
Acid Catalyzed Fluid Spray Gun
Includes GG0 series tip of choice
Part No. 233670, Series A
Sealant Streaming Gun
308813J
Read warnings and instructions.
See page 2 for Table of Contents.
GRACO INC.ąP.O. BOX 1441ąMINNEAPOLIS, MNą55440-1441
Copyright 2002, Graco Inc. is registered to I.S. EN ISO 9001
8153A
Table of Contents
Symbols
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tip Charts 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessories 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions and Mounting Hole Layout 30. . . . . . . . . . .
Graco Standard Warranty 32. . . . . . . . . . . . . . . . . . . . . .
Graco Information 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WARNING
EQUIPMENT MISUSE HAZARD
INSTRUCTIONS
Equipment misuse can cause the equipment to rupture, malfunction, or start unexpectedly and result
in serious injury.
This equipment is for professional use only.
Read all instruction manuals, tags, and labels before operating the equipment.
Warning Symbol
WARNING
This symbol alerts you to the possibility of serious
injury or death if you do not follow the instructions.
Caution Symbol
CAUTION
This symbol alerts you to the possibility of damage to
or destruction of equipment if you do not follow the
instructions.
Use the equipment only for its intended purpose. If you are uncertain about usage, call your Graco
distributor.
Do not alter or modify this equipment. Use only genuine Graco parts and accessories.
Check the equipment daily. Repair or replace worn or damaged parts immediately.
Do not exceed the maximum working pressure of the lowest rated system component. This equip-
ment has a 4000 psi (28 MPa, 280 bar) maximum working pressure.
Route the hoses away from the traffic areas, sharp edges, moving parts, and hot surfaces. Do not
expose Graco hoses to temperatures above 180F (82C) or below –40F (–40C).
Use only Graco approved hoses. Do not remove hose spring guards, which help protect the hose
from rupture caused by kinks or bends near the couplings.
Use fluids or solvents that are compatible with the equipment wetted parts. See the Technical
Data section of all the equipment manuals. Read the fluid and solvent manufacturer’s warnings.
Wear hearing protection when operating this equipment.
Comply with all applicable local, state and national fire, electrical and other safety regulations.
TOXIC FLUID HAZARD
Hazardous fluids or toxic fumes can cause serious injury or death if splashed in the eyes or on the
skin, swallowed, or inhaled.
Know the specific hazards of the fluid you are using. Read the fluid manufacturer’s warnings.
Store hazardous fluid in an approved container. Dispose of hazardous fluid according to all local,
Wear the appropriate protective clothing, gloves, eyewear and respirator.
2 308813
state and national guidelines.
WARNING
INJECTION HAZARD
Spray from the gun, hose leaks, or ruptured components can inject fluid into your body and cause an
extremely serious injury, including the need for amputation. Splashing fluid in the eyes or on the skin
can also cause a serious injury.
Fluid injected into the skin might look like just a cut, but it is a serious injury. Get immediate medi-
cal attention.
Do not point the spray gun at anyone or at any part of the body.
Do not put hand or fingers over the spray tip.
Do not stop or deflect fluid leaks with your hand, body, glove, or rag.
Do not “blow back” fluid; this is not an air spray gun.
Check the gun diffuser operation weekly.
Follow the Pressure Relief Procedure on page 9 whenever you: are instructed to relieve pres-
sure; stop spraying; clean, check, or service the equipment; or install or clean the spray tip.
Tighten all the fluid connections before operating the equipment.
Check the hoses, tubes, and couplings daily. Replace worn, damaged, or loose parts immediately.
Permanently coupled hoses cannot be repaired; replace the entire hose.
FIRE AND EXPLOSION HAZARD
Improper grounding, poor air ventilation, open flames, or sparks can cause a hazardous condition and
result in fire or explosion and serious injury.
Ground the equipment and the object being sprayed. See Ground the System on page 8.
Provide fresh air ventilation to avoid the buildup of flammable fumes from solvent or the fluid being
sprayed.
Extinguish all the open flames or pilot lights in the spray area.
Electrically disconnect all the equipment in the spray area.
Keep the spray area free of debris, including solvent, rags, and gasoline.
Do not turn on or off any light switch in the spray area while operating or if fumes are present.
Do not smoke in the spray area.
Do not operate a gasoline engine in the spray area.
If there is any static sparking while using the equipment, stop spraying immediately. Identify and
correct the problem.
308813 3
Installation
Ventilate the Spray Booth
WARNING
TOXIC FLUID HAZARD
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.
Check and follow all of the National, State and
Local codes regarding air exhaust velocity requirements.
Configure the Gun and Manifold
(Order Manifold separately, see page 20)
Models 239786 and 241469
with Manifolds 241161 and 241162
The gun is supplied with an internal fluid plug (4). See
Fig. 1. To use the gun in a circulating system, remove
the internal plug. In a non-circulating system, leave the
plug in place to minimize flush time.
Non–Circulating Setup Shown (cutaway view)
1
Remove when used in circulating systems
2
Replace with an elbow (107) when used in circulating systems
Install filter in the fluid inlet port
3
3
32
4
1
109
2
Fig. 1: Manifolds 241161 and 241162
The gun is supplied with an internal fluid filter (32).
Install the filter in the gun port being used as the fluid
inlet (see Fig. 1).
101
107
8587A
In a circulating system, apply anti-seize lubricant
222955 to the threads and mating faces of the manifold (101) and the elbows (107), supplied unassembled. Install elbows (107) in both fluid ports of the
manifold (101). Connect the fluid supply line to one
elbow and the fluid return line to the other. The manifold fluid ports are reversible.
In a non-circulating system, apply anti-seize lubricant
222955 to the threads and mating faces of the manifold (101), a plug (109), and an elbow (107), supplied
unassembled. Install an elbow (107) in one fluid port of
the manifold, and a plug (109) in the other port. Install
the internal plug (4) in the gun fluid port on the same
side as the manifold plug. Connect the fluid supply line
to the manifold elbow. See Fig. 1.
NOTE: The gun can operate without the filter. If you
are using highly viscous fluid and the filter causes an
unacceptable pressure drop, remove the filter.
Install the gun on the manifold, using the four screws
(17). Thread the screws by hand, then torque alternately and evenly to 65 in-lb (7.3 Nm).
Models 233670
with Manifold 244930
This gun and manifold are designed to be used with
high viscosity material and sealants, such as protective
coatings and automotive sealants. There is no circulation port. The fluid inlet uses both ports to feed the
valve and no filter is used.
4 308813
Installation
Mount the Gun
Manifolds 241161 and 241162
To mount the gun on a reciprocating arm [0.5 in.
(13 mm) diameter maximum], insert the bar (A)
through the hole in the manifold as shown in Fig. 2.
Secure the gun to the bar by tightening the mounting
screw (B). The tip of the gun should be 8 to 10 in. (200
to 250 mm) from the surface of the object being
sprayed.
KEY
C M5 x 0.8 Capscrews
All Manifolds
To mount the gun on a stationary support, see Fig. 3.
Also refer to the mounting hole layout on page 30.
Attach the gun to the support with two M5 x 0.8
capscrews (C). The screws must be long enough to
engage the threaded holes in the gun manifold to a
depth of 1/4 in. (6 mm). The tip of the gun should
usually be 8 to 10 in. (200 to 250 mm) from the surface
of the object.
A
B
KEY
A Mounting Bar
B Mounting Screw
8574A
Fig. 2: Manifolds 241161 and 241162
C
8575A
Fig. 3: All Manifolds
308813 5
Installation
Air Line and Accessory
Recommendations
1. Install an air pressure regulator on the gun cylinder
air supply line.
A minimum of 70 psi (0.49 MPa, 4.9 bar) air pressure must be supplied to the cylinder for proper
operation. Air pressure opens the valve, a spring
closes the valve. A three-way air valve, which
exhausts cylinder air, is required.
2. Install a bleed-type air shutoff valve on the main air
line. Install an additional bleed-type valve on each
pump air supply line, downstream of the pump air
regulator, to relieve air trapped between this valve
and the pump after the air regulator is shut off.
WARNING
The bleed-type air shutoff valve is required in your
system to relieve air trapped between this valve
and the pump after the air regulator is closed.
Trapped air can cause the pump to cycle unexpectedly, which could result in serious injury.
Fluid Line and Accessory
Recommendations
WARNING
INJECTION HAZARD
To reduce the risk of property damage or
serious injury, including injection, which
could be caused by component rupture
or unrelieved fluid pressure,
A fluid drain valve(s) is required in your system
to assist in relieving fluid pressure in the displacement pump, hose and gun; triggering the
gun to relieve pressure may not be sufficient.
A fluid pressure regulator must be installed in
the system if the pump’s maximum working
pressure exceeds the gun’s maximum fluid
working pressure (see the front cover).
1. Install a fluid filter and drain valve(s) close to the
pump’s fluid outlet.
2. Install a fluid pressure regulator to control fluid
pressure to the gun.
NOTE: Some applications require fine-tuned control of
fluid pressure. You can control fluid pressure more
accurately with a fluid pressure regulator than by
regulating the air pressure to the pump.
3. Install a bleed-type air shutoff valve on the gun air
cylinder supply line, downstream of the air regulator, to shut off air to the gun cylinder. Connect the
air supply line to the gun cylinder air inlet (C). See
Fig. 4.
NOTE: The cylinder air inlet accepts 1/4 in. (6.3 mm)
O.D. tubing.
3. Install a fluid shutoff valve to shut off the fluid
supply to the gun.
4. For paint spray applications, install an in-line fluid
filter, part no. 210500, on the gun fluid inlet (F) to
avoid clogging the spray tip with particles from the
fluid. See Fig. 4.
5. Connect the electrically conductive fluid hose to
the gun fluid inlet (F) or optional in-line filter.
6 308813
Installation
Manifolds 241161 and 241162
6. In a circulating system, connect an electrically
conductive fluid hose to the gun fluid outlet (G).
In a non-circulating system, remove the gun
fluid outlet fitting (G) and plug the outlet port with
the pipe plug (109) supplied.
G (or F)
C
F (or G)
FAN
ATO M
CYL
KEY
C Cylinder Air Inlet: accepts 1/4 in. (6.3 mm) O.D. tubing
F Fluid Inlet: 1/4–18 nptf or #5 JIC (1/2–20 unf)
G Fluid Outlet (circulating gun only): 1/4–18 nptf or #5 JIC
(1/2–20 unf)
Fig. 4: Manifolds 241161 and 241162
8576A
Manifold 244930
This manifold is equipped with passages for circulating
water to maintain the temperature of the gun. Ports
provided are:
Side water inlet, 1/4 npt(f)
Top water outlets, 1/8 npt(f)
Side RTD sensor, 1/8 npt(f)
See Accessories, page 27, for available fittings and
sensors.
M
L
TI1397A
L
KEY
L Water Outlet: 1/8 npt(f)
M Air Inlet (to open valve): 1/8 npt(f)
N Fluid Inlet: 3/8(f)
P Water Inlet: 1/4 npt(f)
N
TI1397A
P
Fig. 5: Manifold 244930
308813 7
Installation
Ground the System
WARNING
FIRE AND EXPLOSION HAZARD
Improper grounding could cause static
sparking, which could cause a fire or
explosion. To reduce the risk of property
damage or serious injury, follow the
grounding instructions below.
The following grounding instructions are minimum
requirements for a system. Your system may include
other equipment or objects which must be grounded.
Check your local electrical code for detailed grounding
instructions for your area and type of equipment. Your
system must be connected to a true earth ground.
1. Pump: Ground the pump by connecting a ground
wire and clamp between the fluid supply and a true
earth ground as instructed in your separate pump
instruction manual.
2. Air compressors and hydraulic power sup-
plies: Ground them according to the manufacturer
recommendations.
3. Air, fluid, and hydraulic hoses connected to
the pump: Use only electrically conductive hoses
with a maximum of 500 feet (150 m) combined
hose length to ensure grounding continuity. Check
the electrical resistance of your air and fluid hoses
at least once a week. If the total resistance to
ground exceeds 29 megohms, replace the hose
immediately.
NOTE: Use a meter that is capable of measuring
resistance at this level.
4. Spray gun: Ground the gun by connecting it to a
properly grounded fluid hose and pump.
5. Fluid supply container: Ground it according to
local code.
6. Object being sprayed: Ground it according to
local code.
7. All solvent pails used when flushing: Ground
them according to local code. Use only metal pails,
which are conductive. Do not place the pail on a
non-conductive surface, such as paper or cardboard, which interrupts the grounding continuity.
8 308813
Operation
Safety
WARNING
INJECTION HAZARD
Remember, this is not an air spray gun.
For your safety be sure to read and
follow the Warnings on pages 2 and 3
and throughout the text of this instruction
manual.
Keep the wallet sized warning card, provided with
the gun, with the operator of this equipment at all
times. The card contains important treatment
information should an injection injury occur. Additional cards are available at no charge from Graco.
Pressure Relief Procedure
WARNING
INJECTION HAZARD
The system pressure must be manually
relieved to prevent the system from
starting or spraying accidentally. Fluid
under high pressure can be injected through the
skin and cause serious injury. To reduce the risk of
an injury from injection, splashing fluid, or moving
parts, follow the Pressure Relief Procedure
whenever you:
are instructed to relieve the pressure,
stop spraying,
check or service any of the system equipment,
or install or clean the spray tip.
1. Shut off the power to the pump.
2. Close the bleed-type master air valve (required in
the system).
5. Leave the drain valve(s) open until you are ready
to spray again.
6. If you suspect that the spray tip or hose is completely clogged or that pressure has not been fully
relieved after following the steps above, very
slowly loosen the hose end coupling and relieve
pressure gradually, then loosen the coupling
completely. Now clear the tip or hose obstruction.
Install a Spray Tip
WARNING
INJECTION HAZARD
To reduce the risk of an injection injury,
follow the Pressure Relief Procedure
at left before removing or installing a
spray tip.
WARNING
INJECTION HAZARD
To reduce the risk of component rupture
and serious injury, including injection, do
not exceed the gun’s maximum fluid
working pressure (see the front cover) or the
maximum working pressure of the lowest rated
component in the system.
1. Make sure there is no pressure in the system.
Follow the Pressure Relief Procedure at left.
Models 239786 and 241469
with GG0 and GG1 Series Spray Tips
2. Install the spray tip (H) and the gasket (J) in the tip
retainer nut (K). Screw the assembly firmly onto
the gun. Tighten the assembly with a wrench. See
Fig. 6.
3. Trigger the gun to relieve the fluid pressure.
4. Open the pump drain valve (required in the system) to help relieve fluid pressure in the displacement pump. In addition, open the drain valve
connected to the fluid pressure gauge (in a system
with fluid regulation) to help relieve fluid pressure
in the hose and gun. Triggering the gun to relieve
pressure may not be sufficient. Have a container
ready to catch the drainage.
J
H
K
Fig. 6
NOTE: Gaskets are included with Streaming Tips
270XXX or Fan Tips 182XXX (used with Model 233670
Sealant Gun).
308813 9
8577A
Operation
Adjust Spray Pattern
1. To adjust the spray pattern direction with fan tips,
orient the slot in the tip horizontally for a horizontal
pattern and vertically for a vertical pattern. See
Fig. 7.
2. Start the pump. Adjust the fluid pressure until the
spray is completely atomized. Use the lowest
pressure necessary to get the desired results.
Higher pressure may not improve the spray pattern
and will cause premature tip wear and pump wear.
3. The spray tip orifice and spray pattern angle
determines the coverage and size of pattern.
When more coverage is needed, follow the Pres-
sure Relief Procedure on page 9, and install a
larger spray tip rather than increasing fluid pressure.
Clean the Spray Gun and System Daily
WARNING
INJECTION HAZARD
To reduce the risk of an injection injury
or splashing fluid in the eyes or on the
skin:
Follow the Pressure Relief Procedure on page
9 before cleaning, removing, or installing a
spray tip and whenever you are instructed to
relieve pressure.
Do not wipe fluid buildup off the gun or spray tip
until pressure is relieved.
CAUTION
To avoid damaging the gun:
Never immerse the gun in solvent as this could
damage packings and allow solvent in the air
passages.
Do not use metal tools to clean holes in the spray
tip.
Tip shown in position for vertical spray pattern
8574A
Fig. 7
Adjust a Streaming Tip
Select a tip which will supply a stream at the required
flow rate at the lowest pressure.
Apply the Fluid
Adjust the system control device, if it is automatic, so
the gun starts spraying just before meeting the workpiece and stops as soon as the workpiece has passed.
Keep the gun a consistent distance, 8 to 10 inches
(200 to 250 mm), from the surface of the object being
sprayed.
CAUTION
This gun is not adjustable. To ensure proper shutoff,
screw the piston cap (18) onto the housing (1) until it
bottoms out.
NOTE: Clean the front of the tip frequently during the
day to help reduce buildup.
1. Relieve the pressure as instructed on page 9.
2. Clean the outside of the gun with a soft cloth
dampened with compatible solvent.
3. To avoid damaging the spray tip, clean it with a
compatible solvent and soft brush.
4. If using the internal filter and/or an in-line filter,
remove and clean it thoroughly in a compatible
solvent.
5. Clean the system’s fluid filter and air line filter.
10 308813
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