Graco AUTOMATIC XT SPAY GUNS 311051D Parts list manual

311051D
Instructions - Parts
Automatic XT Spray Guns
Airspray, HVLP, and Compliant guns for spraying paints and coatings.
See page 3 for model information.
100 psi (0.7 MPa, 7 bar) Maximum Working Fluid Pressure
100 psi (0.7 MPa, 7 bar) Maximum Working Air Pressure
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
TI8085a
Part No. 249369 Airspray Gun shown mounted on
Part No. 288221 Manifold.
Part No. 249377 Airspray Gun with fluid control
shown mounted on Part No. 288223 Manifold.
TI8169a
II 2 G c T6

Related Manuals
2311051D
Contents
Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Selection Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Proper Needle/Nozzle Selection . . . . . . . . . . . . . 8
Gun Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Air Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Ventilate Spray Booth . . . . . . . . . . . . . . . . . . . . 10
Configure Gun and Manifold . . . . . . . . . . . . . . . 10
Install Air Fittings . . . . . . . . . . . . . . . . . . . . . . . . 11
Ground System . . . . . . . . . . . . . . . . . . . . . . . . . 11
Mount Gun . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Connect Air Line . . . . . . . . . . . . . . . . . . . . . . . . 13
Connect Fluid Hose . . . . . . . . . . . . . . . . . . . . . 13
Flush Spray Gun . . . . . . . . . . . . . . . . . . . . . . . . 14
Position Air Cap . . . . . . . . . . . . . . . . . . . . . . . . 14
Adjust Spray Pattern . . . . . . . . . . . . . . . . . . . . . 15
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Pressure Relief Procedure . . . . . . . . . . . . . . . . 17
Apply Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Daily Gun Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
General System Maintenance . . . . . . . . . . . . . . 19
Clean and Flush Gun . . . . . . . . . . . . . . . . . . . . . 19
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
General Troubleshooting . . . . . . . . . . . . . . . . . . 20
Spray Pattern Troubleshooting . . . . . . . . . . . . . 22
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Replace Fluid Packings and Air Seals . . . . . . . . 23
Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Mounting Hole Layout . . . . . . . . . . . . . . . . . . . . . . 35
Mounting Hole Layout . . . . . . . . . . . . . . . . . . . . . . 36
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 38
Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . 38
Related Manuals
The Automatic XT Spray Guns manual is available in the following languages. See the following chart for specific lan-
guage and part number.
Manual Language
311051 English
311637 Chinese
311638 Danish
311639 Dutch
311640 Finnish
311641 French
311642 German
311643 Italian
311644 Japanese
311645 Korean
311646 Norwegian
311647 Polish
311648 Russian
311649 Spanish
311650 Swedish
Manual Language

Models
311051D 3
Models
*Hardened SST needle tip/nozzle (not recommended for thin fluids). All other models have PEEK needle tip.
A manifold is required for each gun to be installed.
Refer to the Parts section for manifold information.
Orifice Size
in. (mm) HVLP Compliant Airspray
.030 (0.75) 249388 249407 249369
.042 (1.0) 249389 249408 249370
.055 (1.4) 249390 249409 249371
.070 (1.8) 249391 249410 249372
*.042 (1.0) Hardened SST 249394 288049 249375
*.055 (1.4) Hardened SST 249395 288050 249376
.030 (0.75) with Fluid Control Knob 249396 249411 249377
.042 (1.0) with Fluid Control Knob 249397 249412 249378
.055 (1.4) with Fluid Control Knob 249398 249413 249379
.070 (1.8) with Fluid Control Knob 249399 249414 249380

Warnings
4311051D
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclama-
tion 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
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 manu-
facturer’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.
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.
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 immediately.

Warnings
311051D 5
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, 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

Selection Charts
6311051D
Selection Charts
TERMS:
Light Fluid: Up to 18 seconds with No. 2 Zahn cup (20
centipoise)
Medium Fluid:19 to 28 seconds with No. 2 Zahn cup
(20-64 centipoise)
Heavy Fluid:Greater than 28 seconds with No. 2 Zahn
cup (greater than 64 centipoise) -- 2.8 Volatile Organic
Compounds, High-solid Polyurethanes, Heavy Water-
borne Enamels
HVLP Spray Gun Assemblies
*Hardened SST needle tip/nozzle (not recommended for thin fluids). All other models have PEEK needle tip.
†With Fluid Control Knob (for fine adjustment of fluid flow).
Gun Assy.
Part No.
Includes:
Orifice Size
in. (mm)
Material Usage
Needle/
Nozzle Kit
Part No.
321 Air Cap
Reorder
Part No.
Viscosity Flow
oz./min. (l/min.)
249388 15F829 288134 .030 (0.75) light 4-10 (0.12-0.30)
249389 15F830 288134 .042 (1.0) light-medium 8-14 (0.24-0.42)
249390 15F831 288134 .055 (1.4) medium 12-18 (0.36-0.54)
249391 15F832 288134 .070 (1.8) medium-heavy 16-20 (0.48-0.60)
249394* 15F835* 288134 .042 (1.0) light-medium 8-14 (0.24-0.42)
249395* 15F836* 288134 .055 (1.4) medium 12-18 (0.36-0.54)
249396† 15F829 288134 .030 (0.75) light 4-10 (0.12-0.30)
249397† 15F830 288134 .042 (1.0) light-medium 8-14 (0.24-0.42)
249398† 15F831 288134 .055 (1.4) medium 12-18 (0.36-0.54)
249399† 15F832 288134 .070 (1.8) medium-heavy 16-20 (0.48-0.60)

Selection Charts
311051D 7
Compliant Spray Gun Assemblies
*Hardened SST needle tip/nozzle (not recommended for thin fluids). All other models have PEEK needle tip.
†With Fluid Control Knob (for fine adjustment of fluid flow).
Airspray Gun Assemblies
*Hardened SST needle tip/nozzle (not recommended for thin fluids). All other models have PEEK needle tip.
† With Fluid Control Knob (for fine adjustment of fluid flow).
Gun Assy.
Part No.
Includes:
Orifice Size
in. (mm)
Material Usage
Needle/
Nozzle Kit
Part No.
006 Air Cap
Reorder
Part No.
Viscosity Flow
oz./min. (l/min.)
249407 15F829 288132 .030 (0.75) light 4-10 (0.12-0.30)
249408 15F830 288132 .042 (1.0) light-medium 8-14 (0.24-0.42)
249409 15F831 288132 .055 (1.4) medium 12-18 (0.36-0.54)
249410 15F832 288132 .070 (1.8) medium-heavy 16-20 (0.48-0.60)
288049* 15F835* 288132 .042 (1.0) light-medium 8-14 (0.24-0.42)
288050* 15F836* 288132 .055 (1.4) medium 12-18 (0.36-0.54)
249411† 15F829 288132 .030 (0.75) light 4-10 (0.12-0.30)
249412† 15F830 288132 .042 (1.0) light-medium 8-14 (0.24-0.42)
249413 15F831 288132 .055 (1.4) medium 12-18 (0.36-0.54)
249414† 15F832 288132 .070 (1.8) medium-heavy 16-20 (0.48-0.60)
Gun Assy.
Part No.
Includes:
Orifice Size
in. (mm)
Material Usage
Needle/
Nozzle Kit
Part No.
315 Air Cap
Reorder
Part No.
Viscosity Flow
oz./min. (l/min.)
249369 15F829 288133 .030 (0.75) light 4-10 (0.12-0.30)
249370 15F830 288133 .042 (1.0) light-medium 8-14 (0.24-0.42)
249371 15F831 288133 .055 (1.4) medium 12-18 (0.36-0.54)
249372 15F832 288133 .070 (1.8) medium-heavy 16-20 (0.48-0.60)
249375* 15F835* 288133 .042 (1.0) light-medium 8-14 (0.24-0.42)
249376* 15F836* 288133 .055 (1.4) medium 12-18 (0.36-0.54)
249377† 15F829 288133 .030 (0.75) light 4-10 (0.12-0.30)
249378† 15F830 288133 .042 (1.0) light-medium 8-14 (0.24-0.42)
249379† 15F831 288133 .055 (1.4) medium 12-18 (0.36-0.54)
249380† 15F832 288133 .070 (1.8) medium-heavy 16-20 (0.48-0.60)

Selection Charts
8311051D
Proper Needle/Nozzle Selection
The spray gun's needle/nozzle kits range in size to pro-
vide different fluid flow rates.
As a general guideline, use the fluid nozzle that will give
the required flow with the needle fully triggered at a fluid
pressure of 5-20 psi (0.035 MPa, 3.5 bar - 0.14 MPa. 14
bar)
For low flow rates or light viscosity fluid, select the
smaller nozzle sizes.
For high flow rates or high viscosity fluid, select the
larger nozzle sizes.
For thicker, abrasive fluids, hardened SST needle tips
and nozzles are recommended.
Gun Selection
HVLP Guns
An HVLP gun is a high transfer efficiency gun that 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 that has
been tested to have a transfer efficiency greater than or
equal to HVLP guns. In addition, the compliant air cap
consumes much less air than the HVLP air cap.
The Graco compliant guns have no restrictions on air
cap pressures, but the gun inlet pressure must remain
under 30 psi (0.21 MPa, 2.1 bar) to remain in compli-
ance.
Airspray Guns
An airspray gun has excellent atomization and high pro-
duction rates typically with some reduction in transfer
efficiency.
Air Caps
The chart below lists the air caps available for pressure
feed, gravity, and siphon feed guns.
* Measured with gun nozzle 8 in. (203 mm) from target surface.
† Caps do not have alignment pin feature.
Spray Gun Air Cap ID
TypicalPattern
Width*
in. (mm) Gun Feed
Nozzle Orifice
in. (mm) Part Number
HVLP 321A 15 (381) Pressure Feed
.030-.070
(.75-1.8) 288134
HVLP 322 15 (381) Pressure Feed .086 (2.2) 234754†
HVLP 323 15 (381) Pressure Feed .110 (2.8) 234755†
Compliant 006A 11 (279) All Models
.030-.070
(.75-1.8) 288132
Airspray 315A 13 (330) Pressure Feed
.030-.070
(.75-1.8) 288133
Airspray 318 10 (254) Pressure Feed .086 (2.2) 234760†
Airspray 319 10 (254) Pressure Feed .110 (2.8) 234761†
Airspray 313 10 (254) Pressure Feed
.030-.070
(.75-1.8) 234756†
Airspray 316 10 (254) Pressure Feed
.030-.070
(.75-1.8) 234758†

Air Flow
311051D 9
Air Flow
All tests were completed with the 0.055 in. (1.4
mm) nozzle and standard air cap for each gun
model.
FIG. 1: HVLP Gun Air Cap Pressure
FIG. 2: Automatic Gun Air Consumption
HVLP Aircap Pressures
0
1
2
3
4
5
6
7
8
9
10
11
12
0 5 10 15 20 25 30 35 40 45 50
Manifold Inlet Pressure psi
Aircap Pressure in psi
HVLP Atomization Air
Pressure at Cap
HVLP Fan Air Pressure at
Cap
Automatic Gun Air Consumption
0
2
4
6
8
10
12
14
16
18
20
0102030405060
Manifold Inlet Pressure psi
Air Flow in SCFM
Airspray Atom. Flow
HVLP Atom. Flow
Compliant Atom. Flow
Airspray Fan Flow
HVLP Fan Flow
Compliant Fan Air Flow

Installation
10 311051D
Installation
The Automatic XT spray guns were designed to produce
the highest quality finish with today's fluids as well as
the low V.O.C. (volatile organic compound) fluids of
tomorrow.
This spray gun can spray most coatings or finishes cur-
rently being used for automotive, industrial, aerospace,
marine, wood, plastic and architectural applications,
while easily operating from paint delivery systems, such
as pressure pots or remote pumps for production line
operation.
The air regulator must have a minimum air flow capacity
of 30 scfm at 100 psi (0.7 MPa, 7 bar) air pressure.
Ventilate Spray Booth
Configure Gun and Manifold
The gun is supplied with an internal fluid plug and seals
(19, 20, 21). To use the gun in a circulating system,
remove the internal plug. In a non-circulating system,
leave the plug in place to minimize flush time.
Circulating System
1. Apply anti-seize lubricant to the threads and mating
faces of the manifold (101) and the elbows (107),
supplied unassembled.
2. Install the elbows (107) in both fluid ports of the
manifold (101).
3. Connect the fluid supply line to one elbow and the
fluid return line to the other. The manifold fluid ports
are reversible.
4. Install the gun on the manifold, using the four
screws (13). Start the threads of all four screws.
Tighten the front two screws first, and then tighten
the back two. Torque all four screws evenly to 65
in-lb (7.3 N•m).
Non-circulating System
1. See FIG. 3. See Apply anti-seize lubricant 222955 to
the threads and mating faces of the manifold (101),
plug (109), and elbow (107), supplied unassembled.
2. Install an elbow (107) in one fluid port of the mani-
fold (101), and a plug (109) in the other port.
3. Install the internal plug (5) in the gun fluid port on
the same side as the manifold plug.
4. Connect the fluid supply line to the fluid inlet elbow
(107).
5. Install the gun on the manifold, using the four
screws (13). Start the threads of all four screws.
Tighten the front two screws first, and then tighten
the back two. Torque all four screws evenly to 65
in-lb (7.3 N•m).
Check and follow all National, State, and Local
codes regarding air exhaust velocity requirements.
Check and follow all local safety and fire codes.
FIG. 3: Non-Circulating Setup Shown (cutaway view)
TI8587b
1
Remove when used in circulating systems.
1
Replace with elbow (107) when used in circulating systems.
2
2
19
101
107
109
21
20