Graco 3A0149EN-H Instructions

Instructions - Parts List
G15/G40 Spray Gun
3A0149H
EN
A lightweight line of air-assisted spray guns for spraying and finishing a variety of paints
and coatings, particularly in applications requiring uniform atomization and high transfer
efficiency. For professional use only.
Important Safety Instructions:
Read all warnings and instructions in this manual. Save these
instructions. See page 3 for model information including maximum working pressure.
Model G15
Model G40
TI6553A
Model G40 w/RAC tip
TI6844A
TI7204B
II 2 G
Contents
Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Typical Installation . . . . . . . . . . . . . . . . . . . . . . . 6
Ventilate the Spray Booth . . . . . . . . . . . . . . . . . . 6
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Air Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Fluid Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Flush Before Using Equipment . . . . . . . . . . . . . . 8
Select a Spray Tip . . . . . . . . . . . . . . . . . . . . . . . . 8
Air Cap Alignment Pin . . . . . . . . . . . . . . . . . . . . . 8
Install a Spray Tip . . . . . . . . . . . . . . . . . . . . . . . . 8
Position the Air Cap . . . . . . . . . . . . . . . . . . . . . . 8
Reverse-A-Clean® (RAC) Tip Assembly . . . . . . . 9
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Pressure Relief Procedure . . . . . . . . . . . . . . . . 10
Trigger Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
How the Air-Assisted Spray Gun Operates . . . . 11
Spray Pattern Adjustment . . . . . . . . . . . . . . . . . 11
HVLP Operation . . . . . . . . . . . . . . . . . . . . . . . . 12
Fluid Application . . . . . . . . . . . . . . . . . . . . . . . . 12
Daily Gun Care, Flushing, and Cleaning . . . . . . . 13
General System Maintenance . . . . . . . . . . . . . . 14
Fluid Filter Maintenance . . . . . . . . . . . . . . . . . . 14
Flushing and Cleaning . . . . . . . . . . . . . . . . . . . 14
Reverse-A-Clean® (RAC) Tip . . . . . . . . . . . . . . 16
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Repair Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Fan Valve Replacement . . . . . . . . . . . . . . . . . . 20
Complete Gun Packing Repair . . . . . . . . . . . . . 20
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Spray Tip Selection Chart . . . . . . . . . . . . . . . . . . . 32
Spray Tips, for use with G15/G40 Air Cap . . . . 32
RAC SwitchTips, for use with G40 RAC
Air Cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
RAC SwitchTips, for use with G40 RAC
Air Cap, Continued . . . . . . . . . . . . . . . . . . . 34
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Part Interchangeability Guide . . . . . . . . . . . . . . 37
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 40
Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . 40
2
3A0149H
Models
Models
Part
24C853
24C854
Series
A
A
Maximum
Working Air
Pressure
psi (MPa, bar)
100 (0.7, 7.0)
100 (0.7, 7.0)
Maximum
Working Fluid
Pressure
psi (MPa, bar)
Description
1500 (10.5, 105)
G15 Medium Pressure
Air-Assisted Spray Gun,
Carbide Seat and Ball
1500 (10.5, 105)
G15 Medium Pressure
Air-Assisted Spray Gun,
Plastic Seat, SST Ball
24C866
Air Cap
with pin
26A824
Air Cap
with pin
Includes:
26A826
A
100 (0.7, 7.0)
1500 (10.5, 105)
G15 Medium Pressure
Air-Assisted Spray Gun,
Carbide Seat and Ball,
Lacquer Air Cap
24C855
A
100 (0.7, 7.0)
4000 (28, 280)
G40 High Pressure Air-Assisted
Spray Gun, Carbide Seat and Ball
4000 (28, 280)
G40 High Pressure, High Flow
Air-Assisted Spray Gun,
Carbide Seat and Ball
249180
Air Cap
without
pin
4000 (28, 280)
G40 High Pressure Air-Assisted
Spray Gun, Carbide Seat and
Ball, Reverse-A-Clean® (RAC)
Tip
24C921
RAC
Air Cap
24C856
24C857
3A0149H
A
A
100 (0.7, 7.0)
100 (0.7, 7.0)
3
Warnings
Warnings
The following are general warnings related to the setup, use, grounding, maintenance, and repair of this equipment.
Additional, more specific warnings may be found throughout the body of this manual where applicable. Symbols that
appear in the body of the manual refer to these general warnings. When these symbols appear throughout the manual, refer back to these pages for a description of the specific hazard.
WARNING
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help prevent
fire and explosion:
• Use equipment only in well ventilated area.
• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic drop
cloths (potential static arc).
• Keep work area free of debris, including solvent, rags and gasoline.
• Do not plug or unplug power cords, or turn power or light switches on or off when flammable fumes
are present.
• Ground all equipment in the work area. See Grounding instructions.
• Use only grounded hoses.
• Hold gun firmly to side of grounded pail when triggering into pail.
• If there is static sparking or you feel a shock, stop operation immediately. Do not use equipment
until you identify and correct the problem.
• Keep a working fire extinguisher in the work area.
SKIN INJECTION HAZARD
High-pressure fluid from gun, hose leaks, or ruptured components will pierce skin. This may look like just
a cut, but it is a serious injury that can result in amputation. Get immediate surgical treatment.
• Do not spray without tip guard and trigger guard installed.
• Engage trigger lock when not spraying.
• Do not point gun at anyone or at any part of the body.
• Do not put your hand over the spray tip.
• Do not stop or deflect leaks with your hand, body, glove, or rag.
• Follow the Pressure Relief Procedure when you stop spraying and before cleaning, checking, or
servicing equipment.
• Tighten all fluid connections before operating the equipment.
• Check hoses and couplings daily. Replace worn or damaged parts immediately.
4
3A0149H
Warnings
WARNING
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not operate the unit when fatigued or under the influence of drugs or alcohol.
• Do not exceed the maximum working pressure or temperature rating of the lowest rated system
component. See Technical Data in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all
equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete information
about your material, request MSDS from distributor or retailer.
• Do not leave the work area while equipment is energized or under pressure. Turn off all equipment
and follow the Pressure Relief Procedure when equipment is not in use.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine manufacturer’s replacement parts only.
• Do not alter or modify equipment.
• Use equipment only for its intended purpose. Call your distributor for information.
• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.
• Do not kink or over bend hoses or use hoses to pull equipment.
• Keep children and animals away from work area.
• Comply with all applicable safety regulations.
TOXIC FLUID OR FUMES HAZARD
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or
swallowed.
• Read MSDS’s to know the specific hazards of the fluids you are using.
• Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.
PERSONAL PROTECTIVE EQUIPMENT
You must wear appropriate protective equipment when operating, servicing, or when in the operating
area of the equipment to help protect you from serious injury, including eye injury, hearing loss, inhalation of toxic fumes, and burns. This equipment includes but is not limited to:
• Protective eyewear, and hearing protection.
• Respirators, protective clothing, and gloves as recommended by the fluid and solvent manufacturer
3A0149H
5
Installation
Installation
Typical Installation
Grounding
NOTE: The typical installation shown in FIG. 1 is only a
guide for selecting and installing air-assisted spray systems. Contact your Graco distributor for assistance in
designing a system to meet your needs.
•
Ventilate the Spray Booth
•
•
Check your local electrical code and pump manual for detailed grounding instructions. Use only
electrically conductive fluid hoses.
Ground the spray gun through connection to a
properly grounded fluid supply hose and pump.
To prevent hazardous concentrations of toxic
and/or flammable vapors, spray only in a properly
ventilated spray booth. Do not 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.
Check and follow all local safety and fire codes.
•
•
E
D
A
C
G
B
TI6554A
FIG. 1: Typical Installation (Model G15 Shown)
F
Key:
A
B
C
D
E
F
G
6
Air Line Filter
Air Shutoff Valve
Gun Air Pressure Regulator
Air Line
Spray Gun
Electrically Conductive Fluid Hose
Gun Air Supply Hose
3A0149H
Installation
Air Line
Fluid Line
1. Install an air filter (A) on the gun air line to ensure a
dry, clean air supply to the gun. Dirt and moisture
can ruin the appearance of your finished workpiece.
See FIG. 1.
•
2. Install an air pressure regulator (C) on the gun air
line to control air pressure to the gun.
3. Install an air shutoff valve (B) on the gun air line and
on the pump air line, to shut off air to the gun.
4. Use a 3/16 in. (5 mm) I.D. or larger air hose to minimize excessive pressure drop in the hose.
NOTE: The gun air inlet has a 1/4-18 npsm (R1/4-19)
compound male thread that is compatible with NPSM
and BSP female swivel connectors.
5. Connect the air hose (G) to the 1/4 npsm gun air
inlet. See FIG. 2.
•
Before connecting the fluid line, blow it out with air
and flush it with solvent. See Flushing and Cleaning, page 14. Use solvent which is compatible with
the fluid to be sprayed.
If better control of fluid pressure is needed, install a
fluid regulator on the fluid line to better control fluid
pressure to the gun.
1. Use a fluid filter to remove coarse particles and sediment, to avoid clogging the spray tip and causing
finishing defects.
NOTE: Guns are equipped with a built-in 100 mesh fluid
filter to provide final filtering just before spraying.
2. Connect the fluid hose (F) to the gun fluid inlet. See
FIG. 4. If desired, install a fluid swivel connector
(189018) at the gun inlet for best maneuverability.
See Accessories, page 35.
F
G
TI6846A
TI6556A
FIG. 2
FIG. 4
6. Connect the other end of the air hose (G) to the outlet of the air shutoff valve. See FIG. 3.
3. Connect the other end of the fluid hose (F) to the
pump fluid outlet.
B
G
C
FIG. 3
3A0149H
A
TI4838A
7
Setup
Setup
Flush Before Using Equipment
1. The equipment was tested with lightweight oil,
which is left in the fluid passages to protect parts. To
avoid contaminating your fluid with oil, flush the
equipment with a compatible solvent before using
the equipment. See Flushing and Cleaning, page
14.
Slot
Horizontal air
cap position
(standard)
Vertical air
cap position
2. Relieve the pressure. See Pressure Relief Procedure, page 10.
Select a Spray Tip
The fluid flow and pattern width depend on the size of
the spray tip, the fluid viscosity, and the fluid pressure.
See Spray Tip Selection Chart, page 32. Contact your
Graco distributor for assistance in selecting an appropriate spray tip for your application.
Air Cap Alignment Pin
Model G15 guns use an air cap alignment pin to position
the air cap. The standard location of the air cap alignment pin is the horizontal air cap position.
If you would like to change the spray pattern direction,
use a needle nose pliers to unscrew the pin and relocate
it to the desired position. See FIG. 5. When relocating
the pin use low-strength thread locker. Torque to 1.5-2.5
in-lb (0.2-0.3 N•m). DO NOT OVERTIGHTEN.
FIG. 5
Tip locating tab
TI6847A
Install a Spray Tip
Install a spray tip in the air cap. Ensure that the tip locating tab is positioned in the slot of the air cap. See FIG. 5.
Position the Air Cap
Assemble the air cap to the gun. The air cap and spray
tip position determine the direction of the spray pattern.
Rotate the air cap (the spray tip rotates with it) as
needed to achieve the desired spray pattern direction.
See FIG. 6. For the G15 air cap, the alignment pin will
stop the rotation in the proper orientation.
The air cap alignment pin can be removed according to
preference. Air cap alignment pins will not work with
model G40 guns.
NOTICE
The alignment pin and retaining ring for current model
guns are different from the earlier model guns. They
are not interchangeable. Use of the incorrect pin will
result in fluid leakage or loss of the alignment feature.
Use of the wrong retaining ring will damage retaining
ring and gun threads. See Part Interchangeability
Guide, page 37.
8
TI6558A
FIG. 6
Tighten the air cap retaining ring (6) firmly by hand to
ensure a good seal between the tip gasket and the diffuser (5).
3A0149H
Setup
Reverse-A-Clean® (RAC) Tip Assembly
Model 24C857 guns use a Reverse-A-Clean® (RAC) tip.
Screw the RAC tip assembly onto the gun and tighten
firmly by hand.
To assemble the RAC tip, insert the seat housing into
the air cap assembly.
TI7199A
TI7196A
FIG. 7
FIG. 10
Insert the SwitchTip.
NOTICE
The RAC assembly for current model guns uses a
different seat housing and has a coarser thread
than the RAC assembly for earlier model guns.
They are not interchangeable. Use of the incorrect RAC assembly will damage the threads. See
Part Interchangeability Guide, page 37.
TI7197A
FIG. 8
Insert the gasket seat.
TI7198A
FIG. 9
3A0149H
9
Operation
Operation
Be sure to read and follow the Warnings on pages 4
and 5 and throughout the text of this instruction manual.
Keep the wallet sized warning card (222385), provided
with the gun, with the operator of this equipment at all
times. The card contains important treatment information should a skin injection injury occur. Additional cards
are available at no charge from Graco.
Pressure Relief Procedure
TI6555A
FIG. 11
Trapped air can cause the pump to cycle unexpectedly, which could result in serious injury from splashing or moving parts.
6. Open all fluid drain valves in the system, having a
waste container ready to catch drainage. Leave
drain valve(s) open until you are ready to spray
again.
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.
7. Engage the trigger lock. See FIG. 12.
8. If you suspect the spray tip or hose is clogged or
that pressure has not been fully relieved after following the steps above, VERY SLOWLY loosen the tip
guard retaining ring or hose end coupling to relieve
pressure gradually, then loosen completely. Clear
hose or tip obstruction.
1. Engage the trigger lock. See FIG. 12.
2. Shut off the pump. See your pump manual.
3. Shut off the gun air supply.
4. Disengage the trigger lock. See FIG. 12.
Trigger Lock
Always engage the trigger lock when you stop spraying
to prevent the gun from being triggered accidentally by
hand or if dropped or bumped.
5. Hold a metal part of the gun firmly to a grounded
metal pail. Trigger the gun to relieve pressure. See
FIG. 11.
ENGAGED
DISENGAGED
TI6581A
TI6582A
FIG. 12
10
3A0149H
Operation
How the Air-Assisted Spray Gun
Operates
The air-assisted spray gun combines airless and air
spraying concepts. The spray tip shapes the fluid into a
fan pattern, as does a conventional airless spray tip. Air
from the air cap further atomizes the fluid and completes
the atomization of the paint tails into the pattern to produce a more uniform pattern. The width of the pattern
can be adjusted by the pattern adjustment valve.
4. Close off the pattern adjustment air by turning the
knob clockwise (in) all the way. See FIG. 13. This
sets the gun for its widest pattern.
CLOSE
OPEN
The air-assisted spray gun differs from an air spray gun
in that increasing the pattern air reduces the pattern
width. To increase the pattern width, use less pattern air
or a larger size tip.
The spray gun has a built-in lead and lag operation.
When triggered, the gun begins emitting air before the
fluid is discharged. When the trigger is released, the
fluid stops before the air flow stops. This helps assure
the spray is atomized and prevents fluid buildup on the
air cap.
Spray Pattern Adjustment
To reduce the risk of component rupture and serious
injury, including injection, do not exceed the gun’s maximum fluid working pressure or the maximum working
pressure of the lowest rated component in the system.
1. Do not turn on the gun air supply yet. Set the fluid
pressure at a low starting pressure. If a fluid pressure regulator is installed, use it to make adjustments.
TI6559A
FIG. 13
5. Set the atomizing air pressure at about 5 psi
(3.5 kPa, 0.35 bar) when triggered. Check the spray
pattern, then slowly increase the air pressure until
the tails are completely atomized and pulled into the
spray pattern. See FIG. 14. Seven to 10 psi (4.9 to
7.0 kPa, 0.49 to 0.7 bar) air pressure is typically
enough to atomize the tails, especially for low viscosity materials. Setting the air pressure too high
will cause material to build up on the air cap and
decrease transfer efficiency. Do not exceed 100 psi
(0.7 MPa, 7 bar) air pressure to the gun.
For a narrower pattern, turn the pattern adjustment
valve knob counterclockwise (out). See FIG. 13. If
the pattern is still not narrow enough, increase the
air pressure to the gun slightly or use a different size
tip. (Not available for RAC tip guns.)
If your system does not have a fluid regulator, the
fluid pressure is controlled by the air regulator supplying the pump, per the formula below:
Pump x Pump Air Regulator
Ratio
Setting
= Fluid
Pressure
2. Trigger the gun to check the atomization; do not be
concerned about the pattern shape yet.
3. Slowly increase the fluid pressure, just to the point
where a further increase in fluid pressure does not
significantly improve fluid atomization.
3A0149H
TI0792A
no air
too little air
correct amount
of air
FIG. 14
11
Operation
HVLP Operation
NOTE: For HVLP operation, the atomization air must
not exceed 10 psi. Use HVLP Verification Kit 24C788 to
verify air psi.
NOTE: There is no fan adjustment when using RAC tips
and caps.
Fluid Application
1. To achieve the best results when applying fluid,
keep the gun perpendicular to the surface and maintain a consistent distance of approximately 8 to 12
in. (200 to 300 mm) from the object being sprayed.
2. To obtain an even finish, use smooth, even strokes
across the object being sprayed with 50% overlap.
3. Paint using parallel strokes. This spray gun applies
all coatings evenly without cross coating.
Always hold the gun at a right angle from the surface.
Do not make an arc with the gun as it causes an uneven
coat of fluid. See FIG. 15.
TI6561A
INCORRECT
TI6562A
CORRECT
FIG. 15
12
3A0149H
Daily Gun Care, Flushing, and Cleaning
Daily Gun Care, Flushing, and Cleaning
NOTICE
Methylene chloride with formic or propionic acid is
not recommended as a flushing or cleaning solvent
with this gun as it will damage aluminum and nylon
components.
NOTICE
Do not use any cleaning method which may allow solvent into the gun air passages. Solvent left in gun air passages could result in a poor quality paint finish.
Do not point the gun up while cleaning it.
TI6563A
Do not immerse the gun in solvent.
TI6564A
3A0149H
Do not wipe the gun with a cloth soaked in solvent;
wring out the excess.
TI4827A
Do not use metal tools to clean the air cap holes
as this may scratch them; scratches can distort
the spray pattern.
TI6565A
13
Daily Gun Care, Flushing, and Cleaning
General System Maintenance
Flushing and Cleaning
1. Relieve the pressure, page 10.
NOTE:
• Flush before changing colors, before fluid can dry in
the equipment, at the end of the day, before storing,
and before repairing equipment.
• Flush at the lowest pressure possible. Check connectors for leaks and tighten as necessary.
• Flush with a fluid that is compatible with the fluid
being dispensed and the equipment wetted parts.
2. Clean the fluid and air line filters daily.
3. Check for any fluid leakage from the gun and fluid
hoses. Tighten fittings or replace equipment as
needed.
4. Flush the gun before changing colors and whenever
you are done operating the gun.
Fluid Filter Maintenance
1. Relieve the pressure, page 10.
1. Unscrew the fluid inlet fitting (18).
2. Remove the air cap retaining ring (6), air cap (21),
and spray tip (33). Soak the spray tip in a compatible solvent.
2. Remove and inspect the inline fluid filter (12). Clean
or replace the filter as necessary.
3. Disconnect the fluid supply hose (F) and air supply
hose (G) from the gun.
G
F
TI6566A
18
TI6567A
FIG. 17
4. Connect the solvent supply hose (T) to the gun.
12
TI6735A
FIG. 16
NOTICE
The threads on the fluid inlet fitting for new model
guns are slightly finer than the threads on the old
model guns. The fluid inlet fittings are not interchangeable. Use of an incorrect fitting will damage the threads.
T
TI6566A
FIG. 18
14
3A0149H
Daily Gun Care, Flushing, and Cleaning
5. Increase the pressure slowly. Point the gun down
into a grounded metal container, and flush the gun
with solvent until all traces of fluid are removed from
the gun passages.
10. Dip the end of a soft-bristle brush into a compatible
solvent. Do not continuously soak the brush's bristles with solvent and do not use a wire brush.
TI4845A
TI6729A
FIG. 19
FIG. 21
11. With the gun pointed down, clean the front of the
gun, using the soft-bristle brush and solvent.
6. Turn off the solvent supply.
7. Relieve the pressure.
8. Disconnect the solvent supply hose (T) from the
gun.
TI6569A
FIG. 22
T
TI6730A
FIG. 20
NOTICE
12. Scrub the air cap retaining ring (6), air cap (21), diffuser (5), and spray tip (33) with the soft-bristle
brush. To clean out air cap holes, use a soft tool,
such as a toothpick, to avoid damaging critical surfaces. Blow air through the spray tip to ensure the
orifice is clean. Clean the air cap and spray tip daily,
minimum. Some applications require more frequent
cleaning.
Trigger the gun whenever you tighten or remove the
diffuser (5). This keeps the needle ball away from
the seating surface and prevents the seat from
being damaged.
9. If it is necessary to remove the diffuser (5) to clean,
trigger the gun while you remove the diffuser with
the gun tool (30).
3A0149H
15
Daily Gun Care, Flushing, and Cleaning
16. After cleaning the gun, lubricate the following parts
with lubricant 111265 weekly:
•
•
•
Trigger pivot pin (A)
Boss on both sides of the gun where the trigger
contacts the gun body (B)
Fluid needle shaft, behind trigger (C)
A
B
TI6570A
FIG. 23
C
13. If the diffuser was removed, trigger the gun while
you reinstall the diffuser (5) with the gun tool (30).
Tighten the diffuser securely to obtain a good seal.
Torque to 155-165 in-lb (18-19 N•m). When properly
tightened, the flange will bottom out on the gun.
14. Install the air cap retaining ring (6), air cap (21), and
spray tip (33).
TI6553A
FIG. 26
Reverse-A-Clean® (RAC) Tip
NOTE: Do not soak the RAC tip seat gasket (33a) in solvent for extended periods of time or swelling may occur.
Clearing a clogged RAC tip
Release the trigger and engage the trigger lock.
TI6568A
FIG. 24
15. Dampen a soft cloth with solvent and wring-out the
excess. Point the gun down and wipe off the outside
of the gun.
TI6581A
ENGAGED
FIG. 27
TI6571A
FIG. 25
16
3A0149H
Daily Gun Care, Flushing, and Cleaning
Rotate the SwitchTip.
Engage the trigger lock.
TI6581A
ENGAGED
TI7200A
FIG. 28
FIG. 31
Return the SwitchTip to its original position.
Disengage the trigger lock.
DISENGAGED
TI7201A
TI6580A
FIG. 29
Trigger the gun into a pail to clear the clog.
FIG. 32
Disengage the trigger lock and continue spraying.
Do not point gun at anyone or at any part of the body.
TI6582A
FIG. 33
DISENGAGED
TI7202A
FIG. 30
3A0149H
17
Troubleshooting
Troubleshooting
NOTE:
• Check all possible remedies in the troubleshooting
charts before disassembling the gun.
• Some improper patterns are caused by the
improper balance between air and fluid.
Problem
Cause
Fluid leakage from back of fluid
packing area.
Air leakage from gun.
Fluid leakage from front of gun.
Worn packings or needle shaft.
Replace needle assembly (2).
Air valve not seating properly.
Needle ball worn or damaged.
Worn seat assembly.
Clean or replace air valve (8).
Replace needle assembly (2) and seat (5c).
Replace the seat (5c) and gasket (5b, carbide
models only). The gasket must be replaced
whenever the seat assembly is removed.
Fluid in air passages.
Fluid viscosity too low for proper
seal with carbide seat.
Spray tip seal leaking.
Leaking around seat housing.
Fluid inlet fitting leaking.
Slow fluid shut-off.
No fluid output when triggered.
Fluid buildup on fluid needle
components.
Spray tip plugged.
Fluid filter or fluid hose plugged.
18
Solution
Do not reverse the direction of the plastic seat
(5c, model 24C854 gun only) if it is worn. The
seat must be replaced it if is worn.
Install plastic seat (5c).
Tighten retaining ring (6) or replace spray tip
(33).
Replace the gasket (5b, carbide models
only). The gasket must be replaced whenever
the seat assembly is removed.
Replace the fluid tube gasket (22). The gasket must be replaced whenever the fluid tube
connector is removed.
Remove and clean or replace the fluid needle
assembly (2).
Clean spray tip. See page 14.
After tip removal (see above), very slowly
loosen the hose end coupling at the gun and
relieve pressure gradually. Then loosen completely to clear the obstruction. Clean or
replace filter (12).
3A0149H
Troubleshooting
Problem
Fluttering or spitting spray.
Cause
Insufficient fluid supply.
Air in paint supply line.
Attempting to “feather” (partially
trigger the gun).
Solution
Adjust fluid regulator or fill fluid supply tank.
Check, tighten pump siphon hose connections, bleed air from paint line.
Cannot “feather” with an AA gun. Feather will
cause drastic reduction of pressure at the tip,
resulting in poor atomization and/or spitting.
Clean or replace spray tip. See page 14.
Striping spray.
Spray tip partially plugged.
Irregular pattern.
Fluid build-up on spray tip, or
spray tip partially plugged.
On defective side of pattern, air
horn holes are partially or totally
plugged.
Clean or replace spray tip. See page 14.
Air horn holes partially or totally
plugged.
Air pressure setting too high.
Clean air horn holes with solvent and soft
brush or toothpick. See page 14.
Reduce inlet air pressure. Seven to 10 psi
(4.9 to 7.0 kPa, 0.49 to 0.7 bar) air pressure
when triggered is recommended.
Pattern pushed to one side,
same side of air cap gets dirty.
Material build up on air cap.
3A0149H
Clean air horn holes with solvent and soft
brush. See page 14.
19
Repair
Repair
Complete Gun Packing Repair
Disassembly
Repair Kits
Seat Repair
NOTE:
• Seal Repair Kit 249422 is available. For best
results, use all the new parts in the kit. Kit parts are
marked with an asterisk, for example (7*).
• Plastic Seat Repair Kit 249424 and Carbide Seat
Repair Kit 249456 are available and can be used
with both Model G15 guns and Model G40 guns.
For best results, use all new parts in the kit. Kit parts
are marked with a symbol in the Parts list, for example (5c†).
• Plastic Seat Kit 249424 is intended for low pressure
usage.
NOTE:
• See Repair Kits, page 20.
• Clean parts with a solvent that is compatible with
the parts and the fluid being sprayed.
1. Relieve the pressure, page 10. Remove the fluid
and air hoses from the gun.
2. Remove the air cap retaining ring (6), air cap (21),
and spray tip (33). See FIG. 35.
6
Fan Valve Replacement
1. Relieve the pressure, page 10.
2. Unscrew the fan valve packing nut (A) from the back
of the gun body (1). Slide the fan valve assembly (4)
out of the gun body. See FIG. 34.
3. Before reinstalling, turn the pattern adjustment valve
(C) of the replacement fan valve assembly (4) completely counterclockwise to prevent damage to the
seat (5c). Install the replacement fan valve assembly into the gun body (1). Screw the packing nut (A)
into the gun body and torque to 90 in-lb (10.5 N•m).
1
33
21
TI6568A
FIG. 35
3. Trigger the gun to pull the needle housing off the
seat while you unscrew the diffuser (5) from the gun
body (1), using the gun tool (30).
4. Inspect the o-rings (5e*, 5f*, and 5g*) in place.
Carefully remove the o-rings from the diffuser housing (5a) and replace if necessary.
4
C
1
1
A
Torque to 90 in-lb
(10.5 N•m).
5. Remove the seat nut (5d), seat (5c) and seat gasket
(5b, carbide models only) using a 7/32 in. hex
wrench.
6. Inspect the seat (5c) and seat gasket (5b) and
replace if necessary.
TI6576A
FIG. 34
20
3A0149H
Repair
7. Reinstall the seat gasket (5b, carbide models only),
seat (5c), and seat nut (5d). Torque to 45-50 in-lb.
Be sure not to overtighten the nut.
NOTE:
• When reinstalling the carbide seat (5c), the tapered
end of the seat (red side) must point toward the gun
spray tip (not the needle tip).
•
13‡
The plastic seat (5c, model 24C854 guns), can be
reinstalled in either direction. To avoid fluid leakage,
do not reverse the direction of the plastic seat (5c) if
it is worn. The seat must be replaced if it is worn.
3‡
1
14‡
FIG. 37
5g* 5c
5e*
5a
3. Remove the fluid needle assembly (2) from the front
of the gun by using the nut driver tool (29). If the
needle is bent or damaged, or the packing is worn
or leaking, replace the entire needle assembly. If
replacement is necessary, be sure to remove the
o-ring (2a*) as it may stick inside the gun body. See
FIG. 38.
5d
5f*
TI6574A
5b
(carbide only)
1
30
29
TI6572A
2a*
FIG. 36
2
Needle Repair
1. Remove the diffuser, see Seat Repair, page 20.
TI6575A
FIG. 38
2. Remove the trigger pivot pin nut (14‡), pivot pin
(13‡), and trigger (3‡) using the gun tool (30) and
nut driver (29). See FIG. 37.
3A0149H
21
Repair
Air Valve Repair
Fluid Tube Replacement
1. Unscrew the spring cap (11) from the back of the
gun body (1) using the gun tool (30). Remove the
two springs (15 and 19) and the shaft (9).
1. Remove the air inlet fitting (17) using the gun tool
(30) and remove the screw (20) using a 3/16 in. hex
wrench.
2. Push the air valve assembly (8*) out the back of the
gun. See FIG. 39.
2. Unscrew the fluid inlet fitting (18). Remove and
clean or replace the inline fluid filter (12).
3. Inspect the u-cup (7*) in the gun body (1). If the
u-cup is worn or leaking, carefully remove the u-cup
from the front of the gun body, using a pick.
3. Unscrew the fluid tube connector (C) from the gun’s
fluid inlet. Carefully remove the gasket (22*).
1
7*
15
8*
11
22*
19
17
C
9
20
18
TI6577B
FIG. 39
12
TI6573A
FIG. 40
22
3A0149H
Repair
3A0149H
23
Repair
Reassembly
NOTE: See Repair Kits, page 20.
1. Install the tube gasket (22*) in the gun. Handtighten
the fluid tube connector (C) into the gun’s fluid inlet.
Handtighten the air inlet fitting (17) and screw (20).
Torque the fluid tube connector to 150-160 in-lb
(17-18 N•m). Torque the air inlet fitting to
210-220 in-lb (24-25 N•m). Torque the fluid tube
bracket screw to 50-60 in-lb (6-7 N•m). See FIG. 43.
8. Insert the fluid needle assembly (2) into the front of
the gun. Use the nut driver (29) to screw the fluid
needle assembly into the gun body (1) and torque to
50-60 in-lb (6-7 N•m). See FIG. 42.
1
29
2. Install the inline fluid filter (12) into the base of the
fluid tube. Screw the fluid inlet fitting (18) into the
base of the tube. Torque to 175-185 in-lb
(20-21 N•m). See FIG. 43.
3. Place the new u-cup (7*) on the seal installation tool
(28*), with the u-cup lips facing the tool as shown in
FIG. 41. Push the u-cup into the back of the gun until
you feel a definite snap.
8
3
3
Lubricate lightly.
8
Lips face out of gun body.
7*
28*
TI6578A
FIG. 41
4. Lubricate the front end of the air valve assembly
(8*). Gently slide the air valve assembly into the
back of the gun, passing through the u-cup (7*), as
far as it will go. Be careful not to damage the u-cup.
See FIG. 43.
2a*
2†
TI6575A
FIG. 42
9. Install the trigger (3), pivot pin (13), and nut (14).
Use low strength thread locker and be sure that the
brass piece of the fluid needle assembly (2) is
behind the trigger. See FIG. 43. Lubricate both sides
of the pivot pin where the trigger contacts the pin
and lubricate the boss on both sides of the gun
where the trigger contacts the gun body. Torque the
nut to 20-30 in-lb (2-3 N•m).
10. Trigger the gun to pull the needle back while you
screw the diffuser assembly (5) into the gun body
(1) using the gun tool (30). Torque to 155-165 in-lb
(18-19 N•m). When properly tightened, the flange
will bottom out on the gun.
11. Attach the retaining ring (6), air cap (21), and spray
tip (33).
5. Carefully insert the thinner end of the shaft (9) into
the air valve (8*).
6. Install the two springs (15 and 19). Screw the spring
cap (11) into the back of the gun body. Torque to
210-220 in-lb (24-25 N•m).
7. Lightly lubricate the needle assembly o-rings and
shaft where the packing slides. Be sure that the
o-ring (2a*) is in place in the gun body (1).
24
3A0149H
Repair
6
6
12
4
21a (G15 only)
6
*6a (G40 only)
5a
5b (carbide only)
5c†
*5g
5d† 11
*5f
*5e
*6a 33
6 (G40 only)
15
4
21
*7 3
*6b
8
11 10
*8
13
3
19
*2a 3
7
6 (G15 only)
3
9
2
9
*22
1a
1
1
3
1
Torque to 150-160 in-lb (17-18 N•m).
3
Lubricate lightly.
4
Torque to 155-165 in-lb (18-19 N•m).
5
Torque to 20-30 in-lb (2-3 N•m).
6
Do not lubricate diffuser o-rings.
7
Brass part must be behind trigger.
8
Lips face out of gun body.
9
Torque to 50-60 in-lb (6-7 N•m).
10
Torque to 210-220 in-lb (24-25 N•m).
11
Torque to 45-50 in-lb (5-6 N•m).
3
12
Use low-strength thread locker.
13 (24C853, 24C854, 24C855, and 26A826)
13
Torque to 175-185 in-lb (20-21 N•m).
14 5
17 10
16
(24C856
and 24C857)
9
12
12
(24C853, 24C854,
24C855, and 26A826)
20
16
(24C853, 24C854,
24C855, and 26A826)
18
FIG. 43
3A0149H
25
Parts
Parts
Part No. 24C853, 24C854, and 26A826,
G15 Gun
Part No. 24C855, G40 Gun
Part No. 24C856, G40 Gun, High Flow
5b (carbide only)
*5g
5c†
5d†
*5f
5a
21a (G15 only)
*6a (G40 only)
*5e
*6a
6 (G40 only)
15
33
4
21
*7
*6b
*8
13‡
11
19
*2a
6 (G15 only)
9
2
*22
1a
3‡
1
14‡
17
12 (24C853, 24C854, 24C855,
and 26A826 only)
16
(24C856 only)
29
20
16
(24C853, 24C854, 24C855,
and 26A826 only)
18
(24C853, 24C854, 24C855,
and 26A826 only)
26
30
28*
TI6579D
3A0149H
Parts
Part No. 24C854, G15 Gun with Plastic Seat
Part No. 24C853, G15 Gun with Carbide Seat
Part No. 26A826, G15 Gun with Carbide Seat, Lacquer Air Cap
Ref.
No.
1
1a
2
Part No. Description
BODY, gun
249423 STOP, trigger
24B790 NEEDLE, assy; 3/32 ball; sst
includes items 2a (24C854 only)
and 9
24B789 NEEDLE, assy; 3/32 ball; carbide
includes items 2a (24C853 and
26A826 only) and 9
2a* 110004 PACKING, o-ring; PTFE
3‡
TRIGGER, gun
4
249135 VALVE, fan, assy
5
249132 DIFFUSER, assy (24C854 only)
249133 DIFFUSER, assy
(24C853 and 26A826 only)
5a
DIFFUSER, housing
5b
288619 GASKET, seat; nylon
(24C853 and 26A826 only)
5c†
SEAT; plastic (24C854 only)
5c
SEAT; carbide
(24C853 and 26A826 only)
5d†
NUT, seat
5e*
111116 PACKING, o-ring, seat; PTFE
5f* 109450 PACKING, o-ring; PTFE
5g* 111457 PACKING, o-ring; PTFE
6
24D438 RING, retaining; includes 6a and
6b
6a* 109213 PACKING, o-ring; PTFE
6b* 15G320 WASHER; PTFE
7*
188493 PACKING, u-cup; UHMWPE
8*
VALVE, air, assy
9
16A529 SHAFT, fluid spring
11
15F195 CAP, spring
12
224453 FILTER, tip (pkg of 5)
13‡
15F739 PIN, pivot
14‡
15F740 PIN, pivot, nut
15
114069 SPRING, compression
16
24D436 TUBE, assy.; includes item 22
17
15F202 FITTING, air inlet
18
24D437 FITTING, hose; see Accessories
for fitting with JIC threads
3A0149H
Qty
.
1
1
1
Ref.
No.
19
20
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
21
21a
22*
28*
29
30
31
32
33
33a
Part No. Description
119767 SPRING, compression
(24C854 and 26A826 only)
115141 SPRING, compression
(24C853 only)
119996 SCREW, cap, socket hd; 1/4-20 x
3/8 in. (10 mm)
24C866 AIR CAP, includes item 21a
(24C853 and 24C854)
26A824 AIR CAP lacquer, includes
item 21a
PIN, air cap; indexing
(package of 3)
115133 GASKET, tube, acetal
TOOL, installation; seal
117642 TOOL, nut driver
15F446 TOOL, gun
222385 CARD, warning (not shown)
172479 TAG, warning (not shown)
SPRAY TIP, customer’s choice
183616 GASKET, tip (not shown)
Qty
.
1
1
1
1
1
1
1
1
1
1
1
1
1
 Replacement Danger and Warning labels, tags, and
cards are available at no cost.
*
Included in Seal Repair Kit 249422 (purchase
separately).
† Included in Plastic Seat Repair Kit 249424
(purchase separately).
 Included in Carbide Seat Repair Kit 249456
(purchase separately).
‡ Included in Trigger Repair Kit 249585
(purchase separately).
 Included in Air Cap Seal Kit 253032
(purchase separately).
 Not for sale separately.
27
Parts
Part No. 24C855, G40 Gun with Standard Tip
Part No. 24C856, G40 Gun, High Flow
Ref.
No.
1
1a
2
Qty
Part No. Description
.
BODY, gun
1
249423 STOP, trigger
1
24B789 NEEDLE, assy; 3/32 ball; carbide
1
includes items 2a and 9
2a* 110004 PACKING, o-ring; PTFE
1
3‡
TRIGGER, gun
1
4
249135 VALVE, fan, assy
1
5
249133 DIFFUSER, assy
1
5a
DIFFUSER, housing
1
5b
288619 GASKET, seat; nylon
1
5c
SEAT; carbide
1
5d
NUT, seat
1
5e*
111116 PACKING, o-ring, seat; PTFE
1
5f* 109450 PACKING, o-ring; PTFE
1
5g* 111457 PACKING, o-ring; PTFE
1
6
24D439 TIP GUARD, includes items 6a
1
and 6b (24C855 & 24C856 only)
6a* 109213 PACKING, o-ring; PTFE
2
6b* 15G320 WASHER; PTFE
1
7*
188493 PACKING, u-cup; UHMWPE
1
8*
VALVE, air, assy
1
9
16A529 SHAFT, fluid spring
1
11
15F195 CAP, spring
1
12
224453 FILTER, tip (pkg of 5, 24C855
1
only)
13‡
15F739 PIN, pivot
1
14‡
15F740 PIN, pivot, nut
1
15
114069 SPRING, compression
1
16
24D436 TUBE, assy, includes item 22
1
(24C855 only)
249317 TUBE, assy (24C856 only)
1
17
15F202 FITTING, air inlet
1
28
Ref.
No.
18
19
20
21
22*
28*
29
30
31
32
33
33a
Part No. Description
24D437 FITTING, hose (24C855 only);
see Accessories for fitting with
JIC threads.
115141 SPRING, compression
119996 SCREW, cap, socket hd; 1/4-20 x
3/8 in. (10 mm) (24C855 only)
249180 AIR CAP
115133 GASKET, tube, acetal
TOOL, installation; seal
117642 TOOL, nut driver
15F446 TOOL, gun
222385 CARD, warning (not shown)
172479 TAG, warning (not shown)
SPRAY TIP, customer’s choice
183616 GASKET, tip (not shown)
Qty
.
1
1
1
1
1
1
1
1
1
1
1
 Replacement Danger and Warning labels, tags, and
cards are available at no cost.
*
Included in Seal Repair Kit 249422 (purchase
separately).
 Included in Carbide Seat Repair Kit 249456
(purchase separately).
‡ Included in Trigger Repair Kit 249585
(purchase separately).
 Included in Air Cap Seal Kit 253032
(purchase separately).
 Not for sale separately.
3A0149H
Parts
3A0149H
29
Parts
Part No. 24C857, G40 Gun with RAC Tip
5b 5c
*5g
5d
*5f
15
11
4
5a
*8
*7
13‡
35
33a
*6a
19
6
*2a
9
2
1a
33
*22
3‡
1
14‡
17
16
TI7203B
20
29
30
28*
TI6580A
30
3A0149H
Parts
Part No. 24C857, G40 Gun with RAC Tip
Ref. No. Part No. Description
1
BODY, gun
1a
249423 STOP, trigger
2
24B789 NEEDLE, assy; 3/32 ball; carbide
includes items 2a and 9
2a*
110004 PACKING, o-ring; PTFE
3‡
TRIGGER, gun
4
15G713 NUT, air plug
5
249877 DIFFUSER, assy, RAC
5a
DIFFUSER, housing
5b 288619 GASKET, seat; nylon
5c
SEAT; carbide
5d
NUT, seat
5e* 111116 PACKING, o-ring, seat; PTFE
5f* 109450 PACKING, o-ring; PTFE
5g* 111457 PACKING, o-ring; PTFE
6
24C921 TIP GUARD/AIR CAP ASSY,
includes item 35
6a* 109213 PACKING, o-ring, PTFE
7*
188493 PACKING, u-cup; UHMWPE
8*
VALVE, air, assy
9
16A529 SHAFT, fluid spring
11
15F195 CAP, spring
13‡
15F739 PIN, pivot
14‡
15F740 PIN, pivot, nut
15
114069 SPRING, compression
16
249317 TUBE, assy
17
15F202 FITTING, air inlet
19
115141 SPRING, compression
20
119996 SCREW, cap, socket hd; 1/4-20 x
3/8 in. (10 mm)
3A0149H
Qty
.
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Ref. No. Part No. Description
22*
115133 GASKET, tube, acetal
28*
TOOL, installation; seal
29
117642 TOOL, nut driver
30
15F446 TOOL, gun
31
222385 CARD, warning (not shown)
32
172479 TAG, warning (not shown)
33
SPRAY TIP, customer’s choice,
see tip selection chart page 32,
includes item 33a
33a
246453 RAC GASKET, standard, black
248936 RAC GASKET, solvent resistant,
orange
35
15F442 HOUSING, cylinder
Qty
.
1
1
1
1
1
1
1
1
1
 Replacement Danger and Warning labels, tags, and
cards are available at no cost.
*
Parts included in Seal Repair Kit 249422 (purchase
separately).
 Parts included in Carbide Seat Repair Kit 249456
(purchase separately).
‡ Parts included in Trigger Repair Kit 249585 (purchase separately).
 Parts included in RAC Conversion Kit 24C791 (purchase separately).
 Not for sale separately.
31
Spray Tip Selection Chart
Spray Tip Selection Chart
Spray Tips, for use with G15/G40 Air Cap
AAM Fine Finish Spray Tips
Recommended for high finish quality applications at low and medium pressures.
Order desired tip, Part No. AAMxxx, where xxx = 3-digit number from matrix below.
GG4 Industrial Spray Tips
Recommended for high wear applications at high pressures.
Order desired tip, Part No. GG4xxx, where xxx = 3-digit number from matrix below.
NOTE:
• All tips in the Spray Tip Selection Chart below can
be used with Model G40 guns. Use tips in the gray
shaded area of the chart with Model G40 guns only.
• Do not use tips in the gray shaded area of the chart
with Model G15 guns.
* Fluid Output
fl oz/min (lpm)
Do not use tips in the gray shaded area of the Spray
Tip Selection Chart with Model G15 guns. G15 guns
are not designed for use at high pressures. Failure to
follow this warning can result in serious injury, including fluid injection and splashing in the eyes or on the
skin.
Maximum Pattern Width at 12 in. (305 mm)
in. (mm)
Orifice Size
in. (mm)
at 600 psi
(4.1 MPa,
41 bar)
at 1000 psi
(7.0 MPa,
70 bar)
2 to 4 4 to 6 6 to 8 8 to 10 10 to 12 12 to 14 14 to 16 16 to 18 18 to 20
(100) (150) (200) (250)
(300)
(350)
(400)
(450)
(500)
† 0.007 (0.178)
† 0.009 (0.229)
† 0.011 (0.279)
0.013 (0.330)
0.015 (0.381)
0.017 (0.432)
0.019 (0.483)
0.021 (0.533)
‡ 0.023 (0.584)
‡ 0.025 (0.635)
‡ 0.027 (0.686)
‡ 0.029 (0.737)
‡ 0.031 (0.787)
‡ 0.033 (0.838)
‡ 0.035 (0.889)
‡ 0.037 (0.940)
‡ 0.039 (0.991)
4.0 (0.1)
7.0 (0.2)
9.5 (0.28)
12.0 (0.35)
16.0 (0.47)
20.0 (0.59)
28.0 (0.8)
35.0 (1.0)
40.0 (1.2)
50.0 (1.5)
58.5 (1.7)
68.0 (1.9)
78.0 (2.2)
88.0 (2.5)
98.0 (2.8)
108.0 (3.1)
118.0 (3.4)
5.2 (0.15)
9.1 (0.27)
12.5 (0.37)
16.0 (0.47)
21.0 (0.62)
26.5 (0.78)
36.3 (1.09)
45.4 (1.36)
51.9 (1.56)
64.8 (1.94)
75.8 (2.27)
88.2 (2.65)
101.1 (3.03)
114.1 (3.42)
127.1 (3.81)
140.0 (4.20)
153.0 (4.59)
107 207
109 209
111 211
213
215
217
219
*
Spray Tip
307
309
311
313
315
317
319
321
409
411
413
415
417
419
421
423
425
509
511
513
515
517
519
521
523
527
431
711
713
715
717
719
721
723
725
815
817
819
821
825
827
917
919
921
923
925
833
435
737
539
639
839
Tips are tested in water.
Fluid output (Q) at other pressures (P) can be calculated by this formula: Q = (0.041) (QT) P
where QT = fluid output (fl oz/min) at 600 psi from the above table for the selected orifice size.
† These tip sizes include a 150 mesh tip filter.
 GG4 tips only.
‡ Do not use these tips with Model G15 guns.
 AAM tips only.
32
611
613
615
617
619
621
623
625
627
629
631
633
3A0149H
Spray Tip Selection Chart
AAF Fine Finish Pre-Orifice Spray Tips
Recommended for high finish quality applications at low and medium pressures. AAF tips have a pre-orifice that
assists in atomizing sheer thinning materials, including lacquers.
Order desired tip, Part No. AAFxxx, where xxx = 3-digit number from matrix below.
* Fluid Output
fl oz/min (lpm)
Orifice Size
in. (mm)
0.009 (0.229)
0.011 (0.279)
0.013 (0.330)
0.015 (0.381)
0.017 (0.432)
*
at 600 psi
(4.1 MPa, 41
bar)
7.0 (0.21)
9.5 (0.28)
12.0 (0.35)
16.0 (0.47)
20.0 (0.59)
Maximum Pattern Width at 12 in. (305 mm)
in. (mm)
at 1000 psi
(7.0 MPa, 70
bar)
8.5 (0.25)
12.5 (0.37)
16.0 (0.47)
21.0 (0.62)
26.5 (0.78)
4 to 6
(150)
6 to 8
(200)
8 to 10
(250)
208
210
212
308
310
312
408
410
412
414
416
10 to 12
(300)
12 to 14
(350)
14 to 16
(400)
610
612
614
616
710
712
714
716
Spray Tip
510
512
514
516
Tips are tested in water.
Fluid output (Q) at other pressures (P) can be calculated by this formula: Q = (0.041) (QT) P
where QT = fluid output (fl oz/min) at 600 psi from the above table for the selected orifice size.
RAC SwitchTips, for use with G40 RAC Air Cap
NOTE: All tips in the Spray Tip Selection Charts below
can be used with Model G40 guns equipped with RAC
air cap 24C921.
NOTE: Tips are sometimes packaged with other promotional parts intended for the airless market. Disregard
extra parts.
LTX RAC Spray Tips
Order desired tip, Part No. LTXxxx, where xxx = 3-digit number from matrix below.
 Maximum Pattern Width at 12 in. (305 mm)
in. (mm)
* Fluid Output,
2 to 4 4 to 6 6 to 8 8 to 10 10 to 12 12 to 14
at 2000 psi
(100) (150) (200) (250)
(300)
(350)
Orifice Size in. (14.0 MPa, 140 bar)
fl oz/min (lpm)
Spray Tip
(mm)
0.009 (0.229) 11.2 (0.33)
0.011 (0.279) 16.6 (0.49)
0.013 (0.330) 23.3 (0.69)
0.015 (0.381) 30.8 (0.91)
0.017 (0.432) 39.5 (1.17)
0.019 (0.483) 49.7 (1.47)
0.021 (0.533) 60.5 (1.79)
0.023 (0.584) 72.7 (2.15)
0.025 (0.635) 85.9 (2.54)
0.027 (0.686) 100.0 (2.96)
0.029 (0.737) 115.6 (3.42)
0.031 (0.787) 131.8 (3.90)
0.033 (0.838) 149.4 (4.42)
0.035 (0.889) 168.4 (4.98)
*
109
111
115
209
211
213
215
217
219
221
231
309
311
313
315
317
319
321
323
325
327
329
331
235
335
225
227
409
411
413
415
417
419
421
423
425
427
429
431
433
435
509
511
513
515
517
519
521
523
525
527
529
531
533
535
611
613
615
617
619
621
623
625
627
629
631
633
635
14 to 16 16 to 18 18 to 20
(400)
(450)
(500)
721
723
817
819
821
827
729
735
831
833
835
Tips are tested in water.
Fluid output (Q) at other pressures (P) can be calculated by this formula: Q = (0.041) (QT)
where QT = fluid output (fl oz/min) from the above table for the selected orifice size.
 Measured with NO airflow. Air assist will tend to reduce pattern lengths by 1 in. to 2 in.
3A0149H
P
33
Spray Tip Selection Chart
RAC SwitchTips, for use with G40 RAC Air Cap, Continued
NOTE: All tips in the Spray Tip Selection Charts below
can be used with Model G40 guns equipped with RAC
air cap 24C921.
FFT Fine Finish RAC Spray Tips
Order desired tip, Part No. FFTxxx, where xxx = 3-digit number from matrix below.
 Maximum Pattern Width at 12 in. (305 mm)
in. (mm)
* Fluid Output at
Orifice Size in. 2000 psi (14.0 MPa, 140 bar)
(mm)
fl oz/min (lpm)
0.008 (0.203)
0.010 (0.254)
0.012 (0.305)
0.014 (0.356)
8.8 (0.26)
13.9 (0.41)
19.9 (0.59)
27.0 (0.80)
4 to 6
(150)
6 to 8
(200)
208
210
212
214
308
310
312
314
8 to 10
(250)
10 to 12
(300)
12 to 14
(350)
510
512
514
612
614
Spray Tip
410
412
414
WRX WideRAC Spray Tips
Order desired tip, Part No. WRxxxx, where xxxx = 4-digit number from matrix below.
Orifice Size
in. (mm)
0.021 (0.533)
0.023 (0.584)
0.025 (0.635)
0.027 (0.686)
0.029 (0.737)
0.031 (0.787)
0.033 (0.838)
0.035 (0.889)
0.037 (0.940)
0.039 (0.991)
*
* Fluid Output at
2000 psi (14.0 MPa, 140 bar)
fl oz/min (lpm)
60.5 (1.79)
72.7 (2.15)
85.9 (2.54)
100.0 (2.96)
115.6 (3.42)
131.8 (3.90)
149.4 (4.42)
168.3 (4.98)
187.9 (5.56)
208.9 (6.18)
 Maximum Pattern Width at 12 in. (305
mm)
24 in. (610 mm)
Spray Tip
1221
1223
1225
1227
1229
1231
1233
1235
1237
1239
Tips are tested in water.
Fluid output (Q) at other pressures (P) can be calculated by this formula: Q = (0.041) (QT)
P
where QT = fluid output (fl oz/min) from the above table for the selected orifice size.
 Measured with NO airflow. Air assist will tend to reduce pattern lengths by 1 in. to 2 in.
34
3A0149H
Accessories
Accessories
Use Only Genuine Graco Parts and Accessories
Air Fitting and Tubing Kit 249473
Alternative-style connector for air inlet and hose. 3/8 in.
to 1/4 npt(f) Push-To-Lock fitting, 25 ft (7.62 m) long, 3/8
in. (9.5 mm) ID, nylon tubing.
Gun Lubricant 111265
One 4 oz. (113 g) tube sanitary (non-silicone) lubricant
for fluid seals and wear areas.
Air Hose 241811
100 psi (0.7 MPa, 7 bar) Maximum Working Pressure
1/4-18 npsm(fbe), 1/4 in. (6 mm) ID, 25 ft (7.62 m) long
polyurethane tubing.
High Pressure Fluid Ball Valve 238694
5000 psi (35 MPa, 350 bar) Maximum Working Pressure
3/8 npt(mbe). SST wetted parts, PEEK seats, PTFE
seals. Compatible with acid-catalyzed materials. Can be
used as fluid drain valve.
Air Line Quick Disconnect
208536 Air Line Quick Disconnect Coupling
169967 Air Line Quick Disconnect Pin
HVLP Verification Kit 24C788
Use to check air cap air pressure at various air supply
air pressures. Do not use for actual spraying.
Fluid Filter Kits
224453 100 mesh (.005 gap spacing) replacement
fluid filters. Quantity. of 5.
238563 60 mesh (.009 gap spacing) replacement
fluid filters for coarser particle filtering to
replace standard 100 mesh filters. Quantity of 3.
NOTE: To be HVLP compliant, the atomizing air pressure must not exceed 10 psi (70 kPa, 0.7 bar).
Fluid Hose 241812
3500 psi (24 MPa, 242 bar) Maximum Working Pressure
1/4-18 npsm(fbe), 3/16 in. (5 mm) ID, 25 ft (7.62 m)
long, nylon tubing with polyurethane cover.
Fluid Swivel Connector 189018
5800 psi (40 MPa, 400 bar) Maximum Working Pressure
Connector to ease movement of the gun and fluid hose.
1/4-18 npsm. 17-4 PH SST wetted parts.
Gun Brush 101892
Use to clean the gun.
G15 Gun Flush Box Insert 15G093
Insert for use with Gun Flush Box 244105 and G15
Spray Guns.
G40 Gun Flush Box Insert 15G346
Insert for use with Gun Flush Box 244105 and G40
Spray Guns.
3A0149H
RAC Gasket 246453
Pack of five standard replacement RAC gaskets (item
33a).
Acetal RAC Gasket 248936
Pack of five plastic (acetal) replacement RAC gaskets
(item 33a).
Tip Gasket Repair Kit 26C713
Kit includes a pack of ten sealing washers.
G40 RAC Conversion Kit 24C791
Kit includes parts to convert a standard G40 gun to a
RAC gun. LTX spray tip not included.
Air Cap Lacquer Kit 289080
Kit includes air cap optimized to spray lacquer.
Air Cap Seal Kit 253032
Pack of five seals and five o-rings for the air cap assy.
Seal Repair Kit 249422
Kit includes replacement o-rings, gasket, u-cup, air
valve assembly, and seal installation tool.
35
Accessories
Plastic Seat Repair Kit 249424
Kit includes replacement plastic seat (pack of 10), and
seat nut for Model G15 gun.
Trigger Repair Kit 249585
Kit includes replacement trigger, pivot pins (qty. of 5),
and pivot pin nuts (qty. of 5).
SST Seat Repair Kit 287962
Kit includes assembled diffuser with SST seat for use
with pigmented acid catalyzed materials. For use with
gun 24C854 only.
Trigger Stop Kit 249423
Kit includes replacement trigger stop and pin.
Carbide Seat Repair Kit 249456
Kit includes replacement carbide seat, seat gasket, and
seat nut for Model G40 gun. Kit also can be used with
Model G15 guns.
Unclogging Needle Kit 249598
Kit includes picks for unclogging gun tip.
Carbide Seat Gasket Kit 288619
Kit includes replacement nylon seat gaskets (qty. of ten)
for Model G40 guns and G15 guns with a carbide seat.
Tip Filter Kit 241804
Replacement filters for spray tip orifice sizes 0.007,
0.009, and 0.011. Quantity of 10.
36
Ultimate Gun Cleaning Kit 15C161
Kit includes brushes and tools for gun maintenance.
Fan Valve Fine Adjustment Kit 289499
Kit includes a replacement fan valve assembly with
more adjustment accuracy.
Fluid Fitting Kit 24C356, JIC Threads
Kit includes a 1/2-20 JIC threaded fluid inlet fitting.
3A0149H
Accessories
Part Interchangeability Guide
Description
Part Number
New Models Part Number,
(24Cxxx)
Older Models*
24D627
15F193
15F194
15G618
G15 retaining ring kit
Includes retaining ring,
PTFE o-ring, and PTFE
washer
24D438
15F192
Yes 16A529 combines the fluid spring shaft and seat
into a single part. Directly replaceable.
No New pin is shorter to match the new gun body.
Using a new pin/air cap combo on an old model
gun results in loss of the alignment feature.
Using an old pin/air cap combo on a new model
gun causes leakage due to improper fit.
No See note below table.
G40 retaining ring/tip
guard kit
Includes retaining ring
with guard, PTFE o-ring,
and PTFE washer
24D439
249256
No
See note below table
15F442
15J770
No
Works properly only with RAC Tip Guard/Air Cap
Assembly 24C921 and is included in that kit.
Seat will fit into older model assemblies, but
spray performance may be affected.
AA RAC guard kit
Includes guard assembly
(with retaining ring) and
mating cylinder housing.
24C921
288465
No
See note below table.
Needle, carbide ball,
G15 and G40
24B789
288559
Yes Directly replaceable.
Needle, stainless steel
ball, G15
24B790
288558
Yes Directly replaceable.
HVLP verification kit
24C788
249140
No
24C791
287917
No
24C866
249596
24D436
249136
Fluid fitting,
standard threads
24D437
15F186
Fluid fitting,
JIC threads
24C356
NA
Fluid spring shaft
16A529
Interchangeable?
Locating pin
RAC seat housing
RAC gun conversion kit
G15 air cap
Fluid tube assembly
See note below table.
Can only be used on the new gun due to a different RAC guard. See note below table.
No Uses new shorter locating pin. See note for
Locating pin, this table.
Yes The new fluid tube assembly will fit an older gun
only if a new fluid fitting is purchased, 24D437
(standard threads) or 24C356 (JIC threads).
No
New fluid fittings have different threads that fit
only the new fluid tube assembly (24D436). Any
No interchange will damage the threads.
NOTE: The new retaining ring is black and has coarse threads, while the old retaining ring is silver and has fine
threads. Any interchange will damage the threads on the ring and gun body.
*
Older model part numbers include 288xxx, 287xxx, 249xxx.
3A0149H
37
Dimensions
Dimensions
Model G15
6.9 in.
(17.5 cm)
8.0 in.
(20.3 cm)
5.0 in. (12.7 cm)
TI6583A
6.1 in. (15.5 cm)
Model G40
6.9 in.
(17.5 cm)
8.0 in.
(20.3 cm)
5.8 in. (14.7 cm)
6.9 in. (17.5 cm)
38
TI6845A
3A0149H
Technical Data
Technical Data
Category
Data
Maximum Working Fluid Pressure . . . . . . . . . . . . . . . . . . Model G15: 1500 psi (10 MPa, 105 bar)
Model G40: 4000 psi (28 MPa, 280 bar)
Maximum Working Air Pressure . . . . . . . . . . . . . . . . . . . . 100 psi (0.7 MPa, 7 bar)
Maximum Gun Inlet Air Pressure for HVLP Operation . . . 14 psi (0.098 MPa, 0.98 bar)
Maximum Working Fluid Temperature . . . . . . . . . . . . . . . 110°F (43°C)
Fluid Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1/4-18 npsm
Air Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1/4-18 npsm (R1/4-19) compound male thread
Gun Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 oz (450 grams)
*Sound Pressure at 20 psi (140 kPa, 1.4 bar) . . . . . . . . . 66.9 dB(A)
*Sound Pressure at 100 psi (0.7 kPa, 7 bar) . . . . . . . . . . 80.0 dB(A)
*Sound Power at 20 psi (140 kPa, 1.4 bar) . . . . . . . . . . . 76.8 dB(A)
*Sound Power at 100 psi (0.7 kPa, 7 bar) . . . . . . . . . . . . 89.9 dB(A)
Wetted Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Stainless Steel, Carbide, Ultra High Molecular Weight
Polyethylene, Engineered Plastic, PTFE, Nylon, Fluoroelastomer
*
All readings were taken with the fan valve fully closed (full fan size), at 20 psi (140 kPa, 1.4 bar) and 100 psi (0.7
kPa, 7 bar), and at the assumed operator position. Sound Power was tested to ISO 9614-2.
Air Flow, Standard Air Cap
12
10
10.6
8
Air Flow
(SCFM)
8.6
6
6.4
5.8
4
4.2
4.6
3.8
2
0
2.6
0
10
20
30
40
50
Gun Inlet Pressure (PSI)
Fan Valve Open
3A0149H
Fan Valve Closed
39
Graco Standard Warranty
Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in
material and workmanship on the date of sale to the original purchaser for use. With the exception of any special, extended, or limited warranty
published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by
Graco to be defective. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco’s written
recommendations.
This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by faulty
installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of
non-Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of Graco equipment with
structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture, installation, operation or
maintenance of structures, accessories, equipment or materials not supplied by Graco.
This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for verification of
the claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The equipment will be returned
to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect in material or workmanship, repairs
will be made at a reasonable charge, which charges may include the costs of parts, labor, and transportation.
THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT
LIMITED TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.
Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above. The buyer agrees that no other remedy
(including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or property, or any other incidental or
consequential loss) shall be available. Any action for breach of warranty must be brought within two (2) years of the date of sale.
GRACO MAKES NO WARRANTY, AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE, IN CONNECTION WITH ACCESSORIES, EQUIPMENT, MATERIALS OR COMPONENTS SOLD BUT NOT
MANUFACTURED BY GRACO. These items sold, but not manufactured by Graco (such as electric motors, 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.
In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco supplying equipment hereunder, or
the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract, breach of warranty, the
negligence of Graco, or otherwise.
FOR GRACO CANADA CUSTOMERS
The Parties acknowledge that they have required that the present document, as well as all documents, notices and legal proceedings entered into,
given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les parties reconnaissent avoir convenu que la
rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires exécutés, donnés ou intentés, à la suite
de ou en rapport, directement ou indirectement, avec les procédures concernées.
Graco Information
For the latest information about Graco products, visit www.graco.com.
For patent information, see www.graco.com/patents.
TO PLACE AN ORDER, contact your Graco distributor or call to identify the nearest distributor.
Phone: 612-623-6921 or Toll Free: 1-800-328-0211, Fax: 612-378-3505
All written and visual data contained in this document reflects the latest product information available at the time of publication.
Graco reserves the right to make changes at any time without notice.
Original instructions. This manual contains English. MM 3A0149
Graco Headquarters: Minneapolis
International Offices: Belgium, China, Japan, Korea
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440-1441
Copyright 2019, Graco Inc. All Graco manufacturing locations are registered to ISO 9001.
www.graco.com
Revision H, February 2024