Graco AirPro 237413 Series A Operation manual

308455M
EN
Instructions-Parts List
5 GAL. (20 LITER) STAINLESS STEEL (ASME) PRESSURE POT
AirPro™Air Spray Package
Fine-finish spray package for waterborne and solvent-based fluids. For professional use
only.
100 psi (0.7 MPa, 7.0 bar) Maximum Fluid Working Pressure
100 psi (0.7 MPa, 7.0 bar) Maximum Air Input Pressure
Model 237409, Series B
Complete package includes pressure pot,
AirPro air spray gun with 0.055 (1.4 mm) fluid nozzle
25 ft. (7.6 m) air and fluid hoses, and air and fluid controls.
Model 237413, Series A
Complete package includes pressure pot,
AirPro HVLP spray gun with 0.055 (1.4 mm) fluid nozzle
25 ft. (7.6 m) air and fluid hoses, and air and fluid controls.
Important Safety Instructions
Read all warnings and instructions in this man-
ual, and on the unit, including the power cord.
Save these instructions.
This manual provides basic safety, installation
and operation information for the package. For
your safety, also read the component manuals
supplied with this package before operating it.
Model 237409 shown
ti0751b

Table of Contents
2
Table of Contents
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Prepare the operator . . . . . . . . . . . . . . . . . . . . . . 5
Prepare the site . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Component Identification . . . . . . . . . . . . . . . . . . 6
Unpack the system . . . . . . . . . . . . . . . . . . . . . . . 7
Connect the hose set and gun to the system . . . 7
Ground the system . . . . . . . . . . . . . . . . . . . . . . . 7
System Component Information . . . . . . . . . . . . . . 8
How to use the AirPro gun . . . . . . . . . . . . . . . . . 8
How to adjust the air regulators . . . . . . . . . . . . . 9
Safety relief valve . . . . . . . . . . . . . . . . . . . . . . . . 9
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Pressure Relief Procedure . . . . . . . . . . . . . . . . 10
Flush the pressure pot before the first use . . . . 11
Prime the system . . . . . . . . . . . . . . . . . . . . . . . 11
Set the fluid and air pressure . . . . . . . . . . . . . . 11
System Shutdown . . . . . . . . . . . . . . . . . . . . . . . 12
Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Model 237409, Series B . . . . . . . . . . . . . . . . . . 14
Model 237413, Series A . . . . . . . . . . . . . . . . . . 16
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 20

Warnings
3
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 symbols refer to procedure-specific risks. When
these symbols appear in the body of this manual or on warning labels, refer back to these Warnings. Product-specific
hazard symbols and warnings not covered in this section may appear throughout the body of this manual where
applicable.
WARNINGWARNINGWARNING
WARNING
PRESSURIZED EQUIPMENT HAZARD
Fluid from the equipment, leaks, or ruptured components can splash in the eyes or on skin and cause seri-
ous injury.
• Follow the Pressure Relief Procedure when you stop spraying/dispensing 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.
• Handle and route hoses and tubes carefully. Keep the hoses and tubes away from moving parts and
hot surfaces. Do not use the hoses to pull equipment. Do not expose Graco hoses to temperatures
above 180°F (82°C) or below -40°F (-40°C).
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. Do not use pail liners unless they are
antistatic or conductive.
•Stop operation immediately if static sparking occurs or you feel a shock.Do not use equipment until
you identify and correct the problem.
• Keep a working fire extinguisher in the work area.

Warnings
4
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 com-
ponent. 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 manufac-
turer’s replacement parts only.
• Do not alter or modify equipment. Alterations or modifications may void agency approvals and create
safety hazards.
• Make sure all equipment is rated and approved for the environment in which you are using it.
• 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.
• Do not expose Graco hoses to temperatures above 180°F (82°C) or below -40°F (-40°C).
• 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 swal-
lowed.
• Read MSDSs 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
Wear appropriate protective equipment when in the work area to help prevent serious injury, including eye
injury, hearing loss, inhalation of toxic fumes, and burns. This protective equipment includes but is not lim-
ited to:
• Protective eyewear, and hearing protection.
• Respirators, protective clothing, and gloves as recommended by the fluid and solvent manufacturer
WARNINGWARNINGWARNING
WARNING

Setup
5
Setup
Prepare the operator
All persons who operate the system should be trained in
the safe, efficient operation of all system components as
well as the proper handling of the chemical coating. At a
minimum, all operators should thoroughly read the
safety, installation and operation sections of this manual
and the component manuals.
Prepare the site
1. Use a minimum 5 HP (3.7 kW) air compressor for
efficient operation.
2. Clear obstacles and debris that could cause an
unsafe operating environment.
3. Bring an air line from your compressed air supply to
the pressure pot location. Be sure the air is dry and
filtered. Install a bleed-type master air valve
upstream from the pressure pot. When it is closed
and the pressure pot air regulator (33) is opened,
the bleed-type master air valve relieves all air pres-
sure to the equipment components.
4. Ventilate the spray booth.
NOTICE
This equipment is compatible with most water-based
materials. See the wetted parts in the Technical Data
section and your fluid and solvent manufacturer’s
compatibility information.
To prevent hazardous concentrations of toxic and/or
flammable vapors, spray only in a properly ventilated
spray booth. Never operate the spray gun unless
ventilation fans are operating. Check and follow all
of the national, state and local codes regarding air
exhaust velocity requirements.

Setup
6
Component Identification
FIG. 1
Model 237413 shown
ti0750b
A
B
C
17b
18
17A
36
27
13
43
42
40
33
7
4
D
KEY
Components you must supply:
A Bleed-type master air valve
Required for pump; order part
no. 110223, 1/4” npt(f)
B Air filter.
Order part no. 110146, 1/4 npt(f)
C Air supply line
D Air line moisture trap
Components supplied with package:
4 Pressure relief valve
7 Air relief valve
13 Ground wire
17a Gun air shutoff valve
17b Pressure pot air shutoff valve
18 Gun fluid shutoff valve
27 Pressure Pot
33 Pressure pot air regulator
36 Gun air regulator
40 Gun fluid hose
42 AirPro air/HVLP spray gun
43 Gun air hose

Setup
7
Unpack the system
1. In addition to the assembled unit, these components
are packed loosely or separately: hose set, gun,
instruction manuals. These are the manuals you
should receive:
Connect the hose set and gun to
the system
See FIG. 1 on page 6
1. Connect the air hose (43) between the gun air shut-
off valve (17a) and the air inlet of the spray gun.
These are 1/4- 18 npsm swivel fittings.
2. Connect the fluid hose (40) between the fluid shutoff
valve (18) and the fluid inlet of the spray gun. These
are 3/8- 18 npsm swivel fittings.
3. Verify that all fittings throughout the system are
tightened securely.
Ground the system
Ground all of this equipment:
Pressure pot: One end of the ground wire (13) is
already connected to the pressure pot. Connect the
other end of the ground wire to a true earth ground.
Air compressor: Ground according to manufacturer’s
recommendations.
Object being sprayed: Ground according to local code.
Fluid supply container: Ground according to local
code.
All solvent pails used when flushing: Ground accord-
ing to local code. Use only metal pails, which are con-
ductive. Do not place the pail on a non-conductive
surface, such as paper or cardboard, which interrupts
the grounding continuity.
308369 Pressure pot
308167 Air regulator
312414 HVLP spray gun (Model 237413)
312414 Air spray gun (Model 237409)
The equipment must be grounded to reduce the risk
of static sparking. Static sparking can cause fumes to
ignite or explode. Grounding provides an escape wire
for the electric current. Check your local electrical
code for detailed grounding instructions for your area
and type of equipment.

System Component Information
8
System Component Information
How to use the AirPro gun
See FIG. 2
1. Make all fluid and air adjustments at the pressure
pot for maximum efficiency. See How to adjust the
air regulators, page 9.
NOTE: Monitor the adjustments made to the gun so if
the results are not satisfactory it can easily be returned
to its previous adjustment. Refer to your gun manual for
more information.
2. Adjusting Air Spray Gun: Use the fan pattern
adjusting valve (E). Normal adjustment is with the
valve turned out fully clockwise and then turned in
two full turns.
• Turn counterclockwise to widen spray pattern.
• Turn clockwise to narrow spray pattern.
Adjusting HVLP Spray Gun: Use the fan pattern
adjusting valve (E).
• For a round spray pattern, turn the pattern
adjusting valve fully in (clockwise).
• For an oval (flat) spray pattern, turn the pattern
adjusting valve fully out (counterclockwise).
3. The fluid adjusting valve (F) is used in systems that
do not have a fluid regulator. As this package
includes a pressure pot regulator (33), use it to
adjust fluid flow. Turn the valve (F) out until full trig-
ger travel is obtained.
4. The gun has a built-in lead and lag operation. When
triggered, the gun emits air before the fluid is dis-
charged. 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.
5. Loosen the air cap retaining ring (G) and rotate the
horns (H) of the air cap to obtain the desired spray
position. Tighten the retaining ring snugly, but do
not over tighten it. See FIG. 2 and FIG. 3.
6. Clean and lubricate the gun as instructed in your
separate gun manual.
FIG. 2
FIG. 3
ti2120a
H
G
E
F
CW
CCW
Air cap horns shown
horizontal which produces
a vertical spray pattern
Air cap horns shown vertical
which produces a horizontal spray
pattern
ti2122a

System Component Information
9
How to adjust the air regulators
See FIG. 4
1. Always open air regulators slowly to prevent surging
during startup.
2. As you look at the system, the regulator (36) on the
right controls air to the gun and the regulator (33) on
the left controls air to the pressure pot.
3. Model 237409 has two T-handle air regulators (33
and 36). Model 237413 (shown in FIG. 4) has one
T-handle air regulator (36) and one air regulator with
an adjustment knob (33).
T-Handle Air Regulator
Turn the T-handle (36 and 33- Model 237409 only) in
(clockwise) to open the air regulator. Turn the T-handle
fully out (counterclockwise) to close it. Be sure the jam
nut under the T-handle does not interfere with your
adjustments. Tighten the jam nut to lock in the setting, if
desired.
Air Regulator with Adjustment Knob
Model 237413 only
Pull out the adjustment knob (33), and turn the knob in
(clockwise) to open the air regulator; turn the knob fully
out (counterclockwise) to close it. Push the adjusting
knob in to lock the setting if desired.
Safety relief valve
See FIG. 4.
The safety relief valve (4) automatically relieves the
pressure pot pressure when the air pressure exceeds
approximately 100 psi (0.7 MPa, 7.0 bar). It resets auto-
matically when the pressure is relieved. Refer to the test
procedure in manual 308369.
FIG. 4
04066
Model 237413 shown
33
4
36

Operation
10
Operation
Pressure Relief Procedure
1. Close the gun air shutoff valve (17a). See FIG. 5.
2. Open the air relief valve (7) by turning it counter
clockwise. Leave it open until you reinstall the pres-
sure pot cover (torque c-clamp to 8-10 ft-lbs) or fill
port.
3. Wait until there is no air escaping through the drain
cock fitting before removing the pressure pot cover
or opening the fill port.
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury
from pressurized fluid, such as skin injection,
splashing fluid and moving parts, follow the Pressure
Relief Procedure when you stop spraying and before
cleaning, checking, or servicing the equipment.
FIG. 5
ti0750b
Model 237413 shown
A Bleed-type master air valve
4 Pressure relief valve
7 Air relief valve
17a Gun air shutoff valve
17b Pressure pot air shutoff valve
18 Gun fluid shutoff valve
27 C-clamps
33 Pressure pot air regulator
36 Gun air regulator
40 Gun fluid hose
43 Gun air hose
A
43
40
33
7
4
36
17b
18
17a
27