Graco 312414P Airpro Pressure Feed Airspray Gun Users Manual Gun, Instructions Parts, English

2015-04-02

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Instructions-Parts
AirPro™ Pressure
Feed Airspray Gun
ll 2 G
312414P
EN
Conventional, HVLP, and compliant guns for specialty industrial applications.
For professional use only.
100 psi (0.7 MPa, 7 bar) Maximum Air Inlet Pressure
300 psi (2.1 MPa, 21 bar) Maximum Fluid Inlet Pressure
See page 3 for model information.
Important Safety Instructions
Read all warnings and instructions in
this manual. Save these instructions.
ti11094a
2312414P
Contents
Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
General Metal Spray Guns . . . . . . . . . . . . . . . . . 3
General Metal with Stainless Steel Tip . . . . . . . . 3
Automotive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Stain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Waterborne . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
High Wear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Adhesives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Spatter Gun . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Air Brush . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Gun Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Conventional Guns . . . . . . . . . . . . . . . . . . . . . . . 6
HVLP Guns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Compliant Guns . . . . . . . . . . . . . . . . . . . . . . . . . 6
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Connect Air and Fluid Lines . . . . . . . . . . . . . . . . 7
Ground the Gun . . . . . . . . . . . . . . . . . . . . . . . . . 7
Flush Before Using Equipment . . . . . . . . . . . . . . 7
Adjust Spray Pattern . . . . . . . . . . . . . . . . . . . . . . 8
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Pressure Relief Procedure . . . . . . . . . . . . . . . . . 9
Apply Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Volatile Organic Compounds (VOC) Regulation . 9
Daily Gun Maintenance . . . . . . . . . . . . . . . . . . . . . 10
General Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Flush . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Clean Gun . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Compliant Cleaning Methods . . . . . . . . . . . . . . 11
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Repair Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 24
Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . 24
Models
312414P 3
Models
Orifice
Size
in. (mm)
Conventional HVLP Compliant
Model Series
Max.
HVLP/Compliant
Air Pressure
psi (MPa, bar) Model Series
Max.
HVLP/Compliant
Air Pressure
psi (MPa, bar) Model Series
Max.
HVLP/Compliant
Air Pressure
psi (MPa, bar)
General Metal Spray Guns
0.020 (0.5) 288726 A N/A 288935 A 19 (0.13, 1.3) 288942 A 29 (0.2, 2.0)
0.030 (0.8) 288929 A N/A 288936 A 19 (0.13, 1.3) 288943 A 29 (0.2, 2.0)
0.042 (1.1) 288930 A N/A 288937 A 19 (0.13, 1.3) 288944 A 29 (0.2, 2.0)
0.055 (1.4) 288931 A N/A 288938 A 19 (0.13, 1.3) 288945 A 29 (0.2, 2.0)
0.070 (1.8) 288932 A N/A 288939 A 19 (0.13, 1.3) 288946 A 29 (0.2, 2.0)
0.086 (2.2) 288933 A N/A 288940 A 19 (0.13, 1.3) 288947 A 29 (0.2, 2.0)
0.110 (2.8) 288934 A N/A 288941 A 19 (0.13, 1.3) 288948 A 29 (0.2, 2.0)
General Metal with Stainless Steel Tip
0.042 (1.1) 288949 A N/A 288952 A 19 (0.13, 1.3) 288955 A 29 (0.2, 2.0)
0.055 (1.4) 288950 A N/A 288953 A 19 (0.13, 1.3) 288956 A 29 (0.2, 2.0)
0.070 (1.8) 288951 A N/A 288954 A 19 (0.13, 1.3) 288957 A 29 (0.2, 2.0)
0.042 (1.1) 24U187** A N/A
0.055 (1.4) 24U188** A N/A
Automotive
0.030 (0.8) 288929 A N/A -- -- -- -- -- --
0.040 (1.0) -- -- -- 289034 A 29 (0.2, 2.0) 289036 A 35 (0.24, 2.4)
0.042 (1.1) 288930 A N/A -- -- -- -- -- --
0.042 (1.1) 24D472* A N/A -- -- -- -- -- --
0.047 (1.2) -- -- -- 289035 A 29 (0.2, 2.0) 289037 A 35 (0.24, 2.4)
0.055 (1.4) 288931 A N/A 289541 A 29 (0.2, 2.0) 289542 A 35 (0.24, 2.4)
* High production
** Assembled for higher air flow volume.
Models
4312414P
Adhesives
Spatter Gun
Air Brush
Stain
0.020 (0.5) 288958 A N/A 288960 A 22 (0.15, 1.5) 288962 A 29 (0.2, 2.0)
0.030 (0.8) 288959 A N/A 288961 A 22 (0.15, 1.5) 288963 A 29 (0.2, 2.0)
0.040 (1.0) 289109 A N/A 289110 A 22 (0.15, 1.5) 289111 A 29 (0.2, 2.0)
Waterborne
0.030 (0.8) 288964 A N/A 288967 A 23 (0.16, 1.6) 288970 A 23 (0.16, 1.6)
0.042 (1.1) 288965 A N/A 288968 A 23 (0.16, 1.6) 288971 A 23 (0.16, 1.6)
0.055 (1.4) 288966 A N/A 288969 A 23 (0.16, 1.6) 288972 A 23 (0.16, 1.6)
High Wear
0.059 (1.5) 288973 A N/A 288976 A 20 (0.14, 1.4) 288979 A 29 (0.2, 2.0)
0.070 (1.8) 288974 A N/A 288977 A 20 (0.14, 1.4) 288980 A 29 (0.2, 2.0)
0.086 (2.2) 288975 A N/A 288978 A 20 (0.14, 1.4) 288981 A 29 (0.2, 2.0)
0.110 (2.8) 289982 A N/A 289983 A 20 (0.14, 1.4) 289984 A 29 (0.2, 2.0)
Orifice
Size
in. (mm)
Conventional HVLP Compliant
Model Series
Max.
HVLP/Compliant
Air Pressure
psi (MPa, bar) Model Series
Max.
HVLP/Compliant
Air Pressure
psi (MPa, bar) Model Series
Max.
HVLP/Compliant
Air Pressure
psi (MPa, bar)
Orifice Size
in. (mm)
Conventional
Model Series
Max.
HVLP/Compliant
Air Pressure
psi (MPa, bar)
0.051 (1.3) 288982 A N/A
0.070 (1.8) 288983 A N/A
Orifice Size
in. (mm)
HVLP
Model Series
Max.
HVLP/Compliant
Air Pressure
psi (MPa, bar)
0.042 (1.1) 288985 A 30 (0.21, 2.1)
Orifice Size
in. (mm)
Conventional
Model Series
Max.
HVLP/Compliant
Air Pressure
psi (MPa, bar)
0.042 (1.1) 24F202 A N/A
Warnings
312414P 5
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equip-
ment. The exclamation point symbol alerts you to a general warning and the hazard symbol refers
to procedure-specific risk. Refer back to these warnings. Additional, product-specific warnings
may be found throughout the body of this manual where applicable.
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 lights on or off when flammable fumes
are present.
• Ground all equipment in the work area. See Grounding instructions.
• 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.
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 forms from
distributor or retailer.
• 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.
Gun Selection
6312414P
Gun Selection
Conventional Guns
Excellent atomization and high production
rates typically with some reduction in transfer
efficiency.
HVLP Guns
An HVLP gun is a high transfer efficiency gun
which limits the air pressure at the air cap to
10 psi (0.07 MPa, 0.7 bar) maximum. In some
areas, an HVLP gun is required for compliance
with environmental standards.
Compliant Guns
A compliant gun is a high transfer efficiency
gun which has been tested to have a transfer
efficiency greater than or equal to HVLP guns.
The Graco compliant guns have no restrictions
on air cap pressures, but the gun inlet pres-
sure must remain under the maximum compli-
ant pressure shown on pages 3-4 to remain in
compliance.
PRESSURIZED EQUIPMENT HAZARD
Fluid from the gun/dispense valve, leaks, or ruptured components can splash in the
eyes or on skin and cause serious injury.
• Follow Pressure Relief Procedure in this manual, when you stop spraying and
before cleaning, checking, or servicing equipment.
• Tighten all fluid connections before operating the equipment.
• Check hoses, tubes, and couplings daily. Replace worn or damaged parts immedi-
ately.
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 appli-
cable guidelines.
• Always wear impervious gloves when spraying or cleaning equipment.
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, inhalation of toxic fumes, burns, and hearing loss. This equipment includes
but is not limited to:
• Protective eyewear
• Clothing and respirator as recommended by the fluid and solvent manufacturer
•Gloves
• Hearing protection
WARNING
Setup
312414P 7
Setup
Connect Air and Fluid Lines
1. Shut off the air supply.
2. Install a shutoff valve (not supplied) down-
stream of the air regulator to shut off gun
air.
3. Install an inline air filter (not supplied) to
clean and dry the gun air supply.
4. Connect a clean, dry, filtered air supply to
the air inlet fitting. See F
IG
. 1.
5. Connect a fluid hose to the fluid inlet fitting.
See F
IG
. 1.
6. Connect other end of the fluid hose to a
regulated fluid supply line.
Ground the Gun
Check your local electrical code and pump
manual for detailed grounding instructions.
Ground the spray gun through connection to a
Graco-approved grounded fluid or air supply
hose.
Flush Before Using Equipment
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 sol-
vent before using the equipment. See Flush,
page 10.
At least one hose must provide a static
ground to the gun.
• Recommended 5/16 in. (7.9 mm) ID
hose, optional 3/8 in. (9.5 mm) ID hose.
• Check that your shop air provides ade-
quate air flow. See Technical Data,
page 23, for minimum cfm
requirements.
• Set shop air pressure regulator (not
supplied) according to fluid manufac-
turer’s recommendation. See maximum
compliant air pressure on air cap.
• Make sure no air restrictions, such as
low-volume cheater valves, obstruct
the air flow.
F
IG
. 1
air inlet fluid inlet
ti11094a
Setup
8312414P
Adjust Spray Pattern
1. Rotate the air cap to achieve desired spray
pattern. See F
IG
. 2.
2. To achieve full fan pattern, open the air
control valve by turning the knob fully coun-
terclockwise. See F
IG
. 3.
3. To create a round pattern, turn the pattern
air off by turning the air control valve fully
clockwise. See F
IG
. 3.
4. Trigger gun and adjust gun air pressure.
Refer to Technical Data, page 23, for inlet
air pressure recommendations.
5. To establish the correct fluid flow, turn the
fluid control valve counterclockwise until no
restriction of the trigger movement is felt,
then turn out another half turn.
6. Adjust fluid pressure to achieve desired
fluid flow rate.
7. To reduce fluid flow, turn the fluid control
valve clockwise.
8. Spray a test pattern. Evaluate the spray
pattern size and atomization.
9. To achieve a narrow spray pattern, turn air
control valve clockwise.
10.To improve atomization, reduce the fluid
flow rate. Increasing the air pressure can
improve atomization but may result in poor
Transfer Efficiency (TE) or non-compliant
operation.
F
IG
. 2
F
IG
. 3
ti4839a
fluid control valve
air control valve
ti11097a
air inlet valve
• If the fluid control valve is turned clock-
wise all the way, the gun will emit only
air.
• If you cannot achieve the correct fluid
flow with the fluid control valve, a differ-
ent sized nozzle may be necessary.
For smaller fluid flow, use the next size
smaller nozzle. For a larger fluid flow,
use the next size larger nozzle.
Operation
312414P 9
Operation
Pressure Relief Procedure
1. Turn off air and fluid supply.
2. Hold a metal part of the gun firmly to a
grounded metal pail. Trigger the gun to
relieve pressure.
Apply Fluid
1. Turn on shop air and fluid supply to the
gun. Set atomizing pressure and fluid pres-
sure with the gun fully triggered.
2. Adjust the pattern size and shape. See
page 8.
3. To achieve the best results when applying
fluid:
• Keep the gun perpendicular and
6 to 8 inches (150 to 200 mm) from object
being sprayed.
• Use smooth, parallel strokes across the
surface to be sprayed with 50% overlap.
NOTE: See Troubleshooting, page 12, if you
experience an irregular pattern.
When using the HVLP spray gun, instead of a
conventional airspray gun, you may need to
use a slightly slower hand movement and
make fewer passes with the gun to coat a part.
This is due to the reduced spray velocity pro-
duced by lower HVLP air pressures, along with
a larger fluid particle size because there is less
air to blow off solvents than is produced by
conventional airspray. Take care to avoid runs
or sags as you spray.
Volatile Organic Compounds
(VOC) Regulation
In certain states, spraying solvents that
release VOCs into the atmosphere when
cleaning a spray gun is prohibited. To comply
with these air quality laws, you must use a
cleaning method that prevents the escape of
VOC vapors into the atmosphere. See Com-
pliant Cleaning Methods, page 11.
Trapped air can cause the pump to cycle
unexpectedly, which could result in serious
injury from splashing or moving parts.
NOTICE
Excessive atomizing air pressure can
increase overspray, reduce transfer effi-
ciency, and result in a poor quality finish.
Regulatory agencies in some states prohibit
the operation of a spray gun above 10 psi
(69 kPa, 0.7 bar) atomizing air cap pressure.
Daily Gun Maintenance
10 312414P
Daily Gun Maintenance
General Tasks
• Frequently lubricate the gun moving parts
with a drop of non-silicone oil.
• Do not disassemble the spray gun if you
are having a spray pattern problem. See
Troubleshooting, page 12, for informa-
tion on how to correct the problem.
• Follow the Pressure Relief Procedure,
page 9.
• Clean the fluid and air line filters daily.
• Check for any fluid leakage from gun and
fluid hoses.
Flush
Flush before changing colors, before fluid can
dry in the equipment, at the end of the day,
before storing, and before repairing equip-
ment. 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 equip-
ment wetted parts.
NOTE: See Compliant Cleaning Methods,
page 11, to comply with air quality laws if appli-
cable.
1. Follow Pressure Relief Procedure,
page 9.
2. Disconnect the fluid supply hose and air
supply hose from gun.
3. Connect the solvent supply hose to the
gun.
4. Start the pump. Always use the lowest pos-
sible fluid pressure when flushing.
5. Hold a metal part of the gun firmly to a
grounded metal pail. Trigger the gun until
clean solvent dispenses.
6. Turn off solvent supply.
7. Follow Pressure Relief Procedure,
page 9,
8. Disconnect the solvent supply hose from
the gun.
Follow Pressure Relief Procedure, page 9,
when you stop spraying and before cleaning,
checking, servicing, or transporting equip-
ment. Read Warnings, page 5.
NOTICE
Solvent left in gun air passages could result
in a poor quality paint finish. Do not use any
cleaning method that may allow solvent into
the gun air passages.
• Do not point gun up while cleaning it.
• Do not wipe gun with a cloth soaked in
solvent; wring out the excess.
• Do not immerse the gun in solvent.
Daily Gun Maintenance
312414P 11
Clean Gun
1. Flush, page 10.
2. Remove air cap. Trigger gun, remove noz-
zle, and soak both in a compatible solution.
3. 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.
4. With the gun pointed down, clean the front
of the gun, using a soft-bristle brush and
solvent.
5. Scrub the air cap retaining ring, air cap,
and fluid nozzle with the soft-bristle brush.
6. Trigger the gun while you install the fluid
nozzle with the gun tool. Tighten the nozzle
securely to 155-165 in-lb (17.5-18.6 N•m)
to obtain a good seal.
7. Install the retaining ring (14) and
air cap (13b).
8. Dampen a soft cloth with solvent and wring
out the excess. Point the gun down and
wipe off the outside of the gun.
9. After cleaning the gun, lubricate the follow-
ing parts with lubricant 111265 daily:
• fluid control valve threads
• trigger pivot pin
• fluid needle shaft
Compliant Cleaning Methods
1. Place spray gun in a gun washer that com-
pletely encloses gun and components dur-
ing cleaning, rinsing, and draining.
2. Spray solvent through the spray gun into a
closed gun cleaning station.
NOTICE
• Do not submerge gun in solvent. Solvent
dissolves lubricant, dries out packings, and
clogs air passages.
• Do not use metal tools to clean air cap
holes as this may scratch them and distort
the spray pattern.
• Use a compatible solvent.
NOTICE
Trigger the gun whenever you tighten or
remove the nozzle. This keeps the needle tip
away from the nozzle seating surface and
prevents the tip from being damaged.
• To clean out air cap holes, use a soft
implement, such as a toothpick, to
avoid damaging critical surfaces.
• Clean the air cap and fluid nozzle daily,
minimum. Some applications require
more frequent cleaning.
• Do not soak the air cap retaining ring in
solvent for prolonged periods of time.
Troubleshooting
12 312414P
Troubleshooting
Problem Cause Solution
Spray Pattern Normal pattern. No action necessary.
Spray Pattern Dirty or damaged air cap or
fluid nozzle.
Rotate air cap (13) 180°.
If pattern follows air cap,
prob-
lem is in air cap. Clean and
inspect. If pattern is not cor-
rected, replace air cap.
If pattern does not follow the
air cap,
the problem is with the
fluid nozzle (11). Clean and
inspect the nozzle. If the pat-
tern is not corrected, replace
nozzle.
Spray Pattern Pressure too high for viscosity
of material being sprayed.
Reduce air pressure and
increase material viscosity.
Correct pattern by narrowing
fan size with the fluid control
valve (8).
Spray Pattern Dirty or distorted air horn
holes.
Clean and inspect air cap (13).
If pattern is not corrected,
replace air cap.
Right
Wrong
Heavy top
or bottom
Wrong
Split pattern
Wrong
Troubleshooting
312414P 13
Gun spitting. Air getting into paint stream. Check if fluid source is empty
and fill.
Tighten fluid nozzle (11).
Check and tighten needle
packing nut (9a).
Check fluid nozzle (11) for
damage.
Will not spray. Fluid control valve (8) turned
too far clockwise.
Adjust fluid control valve (8)
counterclockwise.
Fluid source empty. Refill.
Excessive air blowing back. Loose fluid nozzle (11). Tighten fluid nozzle (11).
Damaged fluid nozzle seal
(19).
Replace seal (19).
Excessive air leak behind
trigger.
Worn u-cups/air valve. Repair gun (Kit 289407). Be
sure to use all included parts.
Worn trigger. Replace trigger (part 289140).
If leak persists repair gun (Kit
289407).
Gun fluid pressure is too high
with gun triggered (cannot
achieve desired flow rate).
Using needle/nozzle kit with
too small orifice.
Use needle/nozzle kit with
larger orifice.
Using a low fluid pressure set-
ting, the fluid flow is too high,
making it necessary to restrict
needle travel to reduce fluid
flow.
Using needle/nozzle kit with
too large orifice.
Use needle/nozzle kit with
smaller orifice.
Fluid system will not operate at
low enough pressure [below
10 psi (70 kPa, 0.7 bar)].
There is no fluid regulator, or
air regulator is not sensitive
enough at low pressure.
Add low pressure fluid regula-
tor, or add more sensitive low
pressure air regulator.
Fluid flow is fluttering while
spraying.
Fluid filter clogged. Check fluid filter.
Fluid source empty. Refill.
Fluid flow fades while spraying
high viscosity fluids.
Air hose size is too restricted
for higher air flow being used.
Use 5/16 in. (7.9 mm) I.D. air
hose if the hose is 25 ft (7.6 m)
long. If longer hose is needed,
use a 3/8 in. (9.5 mm) I.D.
hose.
Problem Cause Solution
Repair
14 312414P
Repair
See Parts, page 16, for callout references.
Disassembly
1. Unscrew retaining ring (14) to remove air
cap (13b). Check o-rings (13a and 13c)
and replace if necessary.
2. Trigger gun while unscrewing nozzle (11)
to prevent needle damage.
3. Check o-ring (19) and replace if necessary.
4. Remove fluid control valve (8), spring (26),
needle (9), and nut (7). Inspect. Replace
tip (9c), needle (9), and u-cup seal (20) as
necessary. If replacing needle tip, use low
strength thread adhesive on needle tip
threads.
5. Remove spring (28) and push the air valve
assembly (6) out the back of the gun.
Inspect. Replace air valve assembly (6)
and u-cup seal (20) as necessary. Use
tool (33) to install u-cup seal.
6. Remove trigger nut (22), trigger pin (21),
wave washer (18), and trigger (10).
7. Unscrew needle packing nut (17) and
remove u-cup packing (16) and
spreader (15).
8. Remove air control valve assembly (5).
Inspect and replace as necessary.
9. Remove air inlet valve assembly (27) [36
on Models 24U187 and 24U188]. Inspect
and replace as necessary.
NOTE: Do not remove the fluid inlet fitting. It
was attached to the gun body with permanent
thread locker. There is also no need to remove
the air inlet fitting.
Follow Pressure Relief Procedure, page 9.
Repair
312414P 15
Reassembly
1. Install air control valve assembly (5) with
valve turned fully counterclockwise to out-
ermost position. Torque to 85-90 in-lb
(9.6-10.2 N•m).
2. Install air inlet valve assembly (27 [36 on
Models 24U187 and 24U188]) with valve
turned fully counterclockwise to outermost
position. Torque to 205-215 in-lb
(23.2-24.3 N•m).
3. Lubricate u-cup spreader (15) and u-cup
packing (16). Install spreader (15) with
tapered end facing rear of gun. Install
u-cup packing (16) with open end facing
front of gun. Install packing nut (17).
Torque to 3 in-lb (0.3 N•m).
4. Install wave washer (18) with cupped side
toward the gun body. Lubricate and apply
thread retainer to trigger pin (10). Install
trigger (10), trigger pin (21), and trigger
nut (22). Torque to 15-20 in-lb
(1.7-2.3 N•m).
5. Install air valve assembly (6), spring (28),
and nut (7). Torque to 175-185 in-lb
(19.8-20.9 N•m).
6. Install needle (9) and spring (26). Lightly
lubricate and install fluid control valve (8).
7. Trigger gun while replacing nozzle (11).
Torque to 155-165 in-lb (17.5-18.6 N•m).
8. Install air cap assembly (13) and retaining
ring (14).
1516
17
ti11226a
Parts
16 312414P
Parts
11
13c
13b
11
19
21
18
1
20652820
7
14
13a
10
36
27
23
8
26
9a
9b
9c
22
15
17
16
6
10
32
23
7
8
3
4
3
4
91
3
3
33
3
3
11
11
11
12
10
4
ti11194a
Pull trigger before installing nozzle (11).
Insert spreader (15) with tapered end facing rear of gun.
Insert u-cup (16) with open end facing front of gun.
Apply lubricant.
Apply low strength thread retainer.
Apply high-strength thread retainer.
Torque to 85-90 in-lbs (9.6-10.2 N•m).
Torque to 15-20 in-lbs (1.7-2.2 N•m).
Torque to 175-185 in-lbs (19.8-20.9 N•m).
Torque to 155-165 in-lbs (17.5-18.6 N•m).
Install with valve assembly turned fully
counterclockwise to outermost position.
Torque to 205-215 in-lbs (23.2-24.3 N•m).
Torque to 3 in-lbs (0.3 N•m).
1
2
3
4
5
6
7
8
9
10
11
12
2
3
11 5
Parts
312414P 17
★
Included in Gun Repair Kit 289399.
✖
Included in Trigger Repair Kit 289143
(contains 5 of each part).
+ Included in Needle Packing Repair Kit
289455 (contains 5 of each part).
* Included in Air Valve Repair Kit 289407.
◆
Included in Air Cap Seal Kit 289791
(contains 5 of each part).
✓
Included in Retaining Ring Kit 289079.
❖
Included in Gun Body Kit 289016.
‡ Included in Fluid Inlet Fitting Kit 24C269.
** Not included in Models 24U187 and
24U188.
--- Not sold separately.
Ref. Part Description Qty.
1
❖
289016 BODY, gun 1
2‡
❖
---
GASKET, fluid inlet 1
3‡
❖
---
FITTING, fluid inlet 1
5 289796 VALVE, air control
assembly 1
6
★
* 289038 VALVE, air, assembly 1
7* 289052 NUT, air valve, u-cup
assembly 1
8 289097 VALVE, fluid control 1
9see
p. 20-22 NEEDLE, assembly
(includes 9a-9c) 1
9a
---
NUT, needle 1
9b
---
NEEDLE 1
9c see
p. 20-22 TIP, needle 1
10 289140 TRIGGER, gun 1
11 see
p. 20-22 NOZZLE, fluid,
pressure feed 1
13 see
p. 20-22 AIR CAP, assembly
(includes 13a-13c) 1
13a
★◆✓
---
WASHER 1
13b
★◆✓
---
O-RING 1
13c see
p. 20-22 AIR CAP 1
14
✓
---
RING, retaining 1
15
★
+
❖
---
SPREADER, u-cup 1
16
★
+
❖
---
PACKING, u-cup 1
17
❖
289793 NUT 1
18
✖
---
WASHER, wave 1
19
★
111457 PACKING, o-ring 1
20
★
*
---
PACKING, u-cup, gun 2
21
✖
---
PIN, pivot 1
22
✖
---
PIN, pivot, nut 1
23 289451 FITTING, air inlet 1
26*
---
SPRING, compression 1
27** 289142 VALVE, assembly,
air inlet 1
28*
---
SPRING, compression 1
29 289794 TOOL, gun 1
33
★
*
---
TOOL, installation,
seal 1
36 289452 NUT, air plug
(not assembled) 1
Parts
18 312414P
Accessories
312414P 19
Accessories
Repair Kits
Air Valves and Regulators
Cups
Cleaning Kits
Test Gauges
Hoses
Tips
Part No. Description
289455 Needle Packing Repair Kit
289399 Gun Repair Kit
289791 Air Cap Seal Kit
289143 Trigger Repair Kit
289407 Air Valve Repair Kit
289079 Retaining Ring Kit
24C269 Fluid Inlet Fitting Kit
24C310 Nozzle O-Ring Kit, 5-pack
289016 Gun Body Kit
288986 Gun without needle, nozzle, or air
cap, with 3/8 npsm (R3/8-19) fluid
inlet
289419 Gun without needle, nozzle, or air
cap, with 1/4 npsm (R1/4-19) fluid
inlet
195065 Steel Air Inlet Fitting
Part No. Description
234784 Air Control Valve with Gauge
235119 Gun Air Regulator Assembly
239655 Swivel Air Valve
Part No. Description
239802 1 qt SST Pressure Cup with
Single Air Regulator
239803 1 qt SST Pressure Cup with
Double Air Regulator
239804 1 qt SST Pressure Cup with
Remote Air Regulator
240266 Disposable Polyethylene Cup
Liners (40 pack), for 1 qt siphon
and pressure cups only
235117 2 qt Pressure Cup with
Regulator and Hose
Part No. Description
105749 Cleaning Brush
111265 Gun Lubricant
15C161 Ultimate Gun Cleaning Kit
Part No. Description
289803 HVLP Automotive Verification
289563 HVLP General Metal 0.5 - 1.8 mm
(0.020-0.070 in.) Verification
289564 HVLP General Metal 2.2 mm
(0.086 in.) Verification
289565 HVLP General Metal 2.8 mm
(0.110 in.) Verification
289566 HVLP Stain Verification
289567 HVLP Waterborne Verification
289568 HVLP High Wear 1.5 mm
(0.059 in.) Verification
289569 HVLP High Wear 1.8-2.2 mm
(0.070-0.086 in.) Verification
Part No. Description
239631 4 ft Air Whip Hose Assembly
(5/16 in.)
239636 15 ft Air Hose Assembly (5/16 in.)
239637 25 ft Air Hose Assembly (5/16 in.)
239622 4 ft Fluid Whip Hose Assembly
(3/16 in.)
239633 15 ft Fluid Hose Assembly
(3/16 in.)
239634 25 ft Fluid Hose Assembly
(3/16 in.)
Part No. Description
24E484 .030 in. SST Needle Tips
(Pack of 5)
Repair Kits
20 312414P
Repair Kits
Model Spray Type
Nozzle Size
in. (mm)
Air Cap Kit
(13a-13c)
Nozzle
Kit
(11, 19)
Needle
Assembly Kit
(9a-9c)
Needle/
Nozzle Kit
(9a-9c, 11, 19)
Needle Tip
Kit
(9c, 5-pack)
General Metal Spray Guns
288726 Conventional 0.020 (0.5) 289773 289061 289270 289458 289350
288929 Conventional 0.030 (0.8) 289773 289062 289271 289459 288183
288930 Conventional 0.042 (1.1) 289773 289063 289785 289460 288184
288931 Conventional 0.055 (1.4) 289773 289064 289799 289462 288185
288932 Conventional 0.070 (1.8) 289784 289065 289799 289464 288185
288933 Conventional 0.086 (2.2) 289068 289066 289787 289466 289004
288934 Conventional 0.110 (2.8) 289069 289067 289800 289467 289007
288935 HVLP 0.020 (0.5) 289041 289061 289270 289458 289350
288936 HVLP 0.030 (0.8) 289041 289062 289271 289459 288183
288937 HVLP 0.042 (1.1) 289041 289063 289785 289460 288184
288938 HVLP 0.055 (1.4) 289041 289064 289799 289462 288185
288939 HVLP 0.070 (1.8) 289041 289065 289799 289464 288185
288940 HVLP 0.086 (2.2) 289070 289066 289787 289466 289004
288941 HVLP 0.110 (2.8) 289043 289067 289800 289467 289007
288942 Compliant 0.020 (0.5) 289042 289061 289270 289458 289350
288943 Compliant 0.030 (0.8) 289042 289062 289271 289459 288183
288944 Compliant 0.042 (1.1) 289042 289063 289785 289460 288184
288945 Compliant 0.055 (1.4) 289042 289064 289799 289462 288185
288946 Compliant 0.070 (1.8) 289042 289065 289799 289464 288185
288947 Compliant 0.086 (2.2) 289044 289066 289787 289466 289004
288948 Compliant 0.110 (2.8) 289045 289067 289800 289467 289007
General Metal with Stainless Steel Tip
288949 Conventional 0.042 (1.1) 289773 289063 289272 289461 289010
288950 Conventional 0.055 (1.4) 289773 289064 289273 289463 289013
288951 Conventional 0.070 (1.8) 289784 289065 289273 289465 289013
24U187** Conventional 0.042 (1.1) 289040 289063 189272 289461 289010
24U188** Conventional 0.055 (1.4) 289040 289064 189273 289463 289013
288952 HVLP 0.042 (1.1) 289041 289063 289272 289461 289010
288953 HVLP 0.055 (1.4) 289041 289064 289273 289463 289013
288954 HVLP 0.070 (1.8) 289041 289065 289273 289465 289013
288955 Compliant 0.042 (1.1) 289042 289063 289272 289461 289010
288956 Compliant 0.055 (1.4) 289042 289064 289273 289463 289013
288957 Compliant 0.070 (1.8) 289042 289065 289273 289465 289013
** Models 24U187 and 24U188 do not include item 27.
Repair Kits
312414P 21
Automotive
288929 Conventional 0.030 (0.8) 289773 289062 289271 289459 288183
288930 Conventional 0.042 (1.1) 289773 289063 289785 289460 288184
24D472* Conventional 0.042 (1.1) 289040 289063 289785 289460 288184
288931 Conventional 0.055 (1.4) 289773 289064 289799 289462 288185
289034 HVLP 0.040 (1.0) 289771 289774 289785 289468 288184
289035 HVLP 0.047 (1.2) 289771 289775 289799 289469 288185
289541 HVLP 0.055 (1.4) 289771 289776 289786 289495 289001
289036 Compliant 0.040 (1.0) 289772 289777 289785 289470 288184
289037 Compliant 0.047 (1.2) 289772 289778 289799 289471 288185
289542 Compliant 0.055 (1.4) 289772 289779 289799 289497 288185
* High production
Stain
288958 Conventional 0.020 (0.5) 288862 288907 289270 289472 289350
288959 Conventional 0.030 (0.8) 288862 288927 289271 289473 288183
289109 Conventional 0.040 (1.0) 288862 289112 289785 289474 288184
288960 HVLP 0.020 (0.5) 288864 288907 289270 289472 289350
288961 HVLP 0.030 (0.8) 288864 288927 289271 289473 288183
289110 HVLP 0.040 (1.0) 288864 289112 289785 289474 288184
288962 Compliant 0.020 (0.5) 288863 288907 289270 289472 289350
288963 Compliant 0.030 (0.8) 288863 288927 289271 289473 288183
289111 Compliant 0.040 (1.0) 288863 289112 289785 289474 288184
Adhesives
288982 Conventional 0.051 (1.3) 289051 289077 289799 289484 288185
288983 Conventional 0.070 (1.8) 289051 289078 289799 289485 288185
Spatter
288985 HVLP 0.042 (1.1) 289053 289063 289785 289460 288184
Air Brush
24F202 Conventional 0.042 (1.1) 24D705 289063 289785 289460 288184
Model Spray Type
Nozzle Size
in. (mm)
Air Cap Kit
(13a-13c)
Nozzle
Kit
(11, 19)
Needle
Assembly Kit
(9a-9c)
Needle/
Nozzle Kit
(9a-9c, 11, 19)
Needle Tip
Kit
(9c, 5-pack)
Repair Kits
22 312414P
Needle Tips
Waterborne
288964 Conventional 0.030 (0.8) 289046 289071 289785 289475 288184
288965 Conventional 0.042 (1.1) 289046 289072 289785 289476 288184
288966 Conventional 0.055 (1.4) 289046 289073 289799 289477 288185
288967 HVLP 0.030 (0.8) 289047 289071 289785 289475 288184
288968 HVLP 0.042 (1.1) 289047 289072 289785 289476 288184
288969 HVLP 0.055 (1.4) 289047 289073 289799 289477 288185
288970 Compliant 0.030 (0.8) 289048 289071 289785 289475 288184
288971 Compliant 0.042 (1.1) 289048 289072 289785 289476 288184
288972 Compliant 0.055 (1.4) 289048 289073 289799 289477 288185
High Wear
288973 Conventional 0.059 (1.5) 288861 289074 289352 289478 N/A
288974 Conventional 0.070 (1.8) 289049 289075 289352 289479 N/A
288975 Conventional 0.086 (2.2) 289049 289076 289351 289480 N/A
289982 Conventional 0.110 (2.8) 289049 289975 289979 289980 N/A
288976 HVLP 0.059 (1.5) 289115 289331 289352 289481 N/A
288977 HVLP 0.070 (1.8) 289325 289332 289352 289482 N/A
288978 HVLP 0.086 (2.2) 289325 289333 289351 289483 N/A
289983 HVLP 0.110 (2.8) 289325 289976 289979 289981 N/A
288979 Compliant 0.059 (1.5) 289050 289331 289352 289481 N/A
288980 Compliant 0.070 (1.8) 289327 289332 289352 289482 N/A
288981 Compliant 0.086 (2.2) 289327 289333 289351 289483 N/A
289984 Compliant 0.110 (2.8) 289327 289976 289979 289981 N/A
Model Spray Type
Nozzle Size
in. (mm)
Air Cap Kit
(13a-13c)
Nozzle
Kit
(11, 19)
Needle
Assembly Kit
(9a-9c)
Needle/
Nozzle Kit
(9a-9c, 11, 19)
Needle Tip
Kit
(9c, 5-pack)
Grooves Needle Tip
0 289004, 289007
1 289350
2 288183
3 288184
4 288185
Grooves
ti14043a
Technical Data
312414P 23
Technical Data
WW
* Produces 10 psi (0.07 MPa, 0.7 bar) spraying pressure at air cap.
** All readings were taken with the fan valve fully open. Sound power was tested to ISO 9614-2.
Air Consumption
Maximum Air Inlet Pressure . . . . . . . . . . . . . . . . . . . . . . .. . . 100 psi (0.7 MPa, 7 bar)
Maximum Fluid Inlet Pressure . . . . . . . . . . . . . . . . . . . . .. . . 300 psi (2.1 MPa, 21 bar)
Maximum HVLP*/Compliant Inbound Air Pressure . . . . . Printed on air cap. See Models, page 3-4.
Fluid and Air Operating Temperature Range . . . . . . . . . .. . . 32°-109°F (0°-43°C)
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . 410 g
Air Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . 1/4 npsm (R1/4-19)
Fluid Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . 3/8 npsm (R3/8-19)
Wetted Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . 303 stainless steel, 17-4 PH stainless steel, PEEK,
acetal, UHMWPE
Noise Data**. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Conventional
Sound power at 43 psi (0.30 MPa, 3.0 bar) . . . . . . . . 88.82 dB(A)**
Sound Power at 43 psi (0.30 MPa, 3.0 bar) . . . . . . . . 78.91 dB(A)**
HVLP
Sound power at 19 psi (0.13 MPa, 1.3 bar) . . . . . . . . 89.70 dB(A)**
Sound Power at 19 psi (0.13 MPa, 1.3bar) . . . . . . . . 79.79 dB(A)**
Compliant
Sound power at 29 psi (0.20 MPa, 2.0 bar) . . . . . . . . 87.47 dB(A)**
Sound Power at 29 psi (0.20 MPa, 2.0 bar) . . . . . . . . 77.56 dB(A)**
Spray Type Application
Air Inlet
Pressure
psi (MPa, bar)
Air
Consumption
(scfm)
Conventional Stain 35 (0.24, 2.4) 15.2
HVLP Stain 22 (0.15, 1.5) 14.8
Compliant Stain 29 (0.2, 2.0) 13.6
Conventional Adhesive 21 (0.14, 1.4) 11.3
Conventional General Metal 36 (0.25, 2.5) 12.6
HVLP General Metal 19 (0.13, 1.3) 14.9
Compliant General Metal 29 (0.2, 2.0) 11.7
Conventional High Wear 38 (0.26, 2.6) 17.1
HVLP High Wear 20 (0.14, 1.4) 15.0
Compliant High Wear 29 (0.2, 2.0) 10.7
Conventional Waterborne 36 (0.25, 2.5) 12.6
HVLP Waterborne 20 (0.14, 1.4) 15.0
Compliant Waterborne 23 (0.16, 1.6) 13.1
Conventional Automotive 36 (0.25, 2.5) 12.6
HVLP Automotive 29 (0.2, 2.0) 14.4
Compliant Automotive 35 (0.24, 2.4) 11.2
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.
This manual contains English. MM 312414
Graco Headquarters: Minneapolis
International Offices: Belgium, China, Japan, Korea
GRACO INC. AND SUBSIDIARIES • P.O. BOX 1441 • MINNEAPOLIS MN 55440-1441 • USA
Copyright 2007, Graco Inc. All Graco manufacturing locations are registered to ISO 9001.
www.graco.com
Revison P, May 2014
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

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