Graco AIRPRO 312414D Manuale operativo

312414D

Instructions-Parts

AirPro™Pressure

Feed Airspray Gun

Conventional, HVLP, and compliant guns for specialty industrial applications.

100 psi (0.7 MPa, 7 bar) Maximum Air Inlet Pressure

300 psi (2.1 MPa, 21 bar) Maximum Fluid Inlet Pressure

See page 2for model information.

Important Safety Instructions

Read all warnings and instructions in

this manual. Save these instructions.

ti1109

ll 2 G

2312414D

Contents

Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

General Metal with Stainless Steel Tip . . . . . . . . 3

Automotive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Stain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Waterborne . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

High Wear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Adhesives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Spatter Gun . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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

312414D 3

Models

General Metal Spray Guns

General Metal with Stainless Steel Tip

Automotive

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)

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)

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)

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)

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)

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 -- -- -- -- -- --

0.047 (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)

Models

4312414D

Stain

Waterborne

High Wear

Adhesives Spatter Gun

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)

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)

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)

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)

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)

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)

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)

Warnings

312414D 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 Tech-

nical Data in all equipment manuals. Read fluid and solvent manufacturer’s warn-

ings. 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

6312414D

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.

•FollowPressure 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

312414D 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 FIG. 1.

5. Connect a fluid hose to the fluid inlet fitting.

See FIG. 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.

FIG. 1

air inlet fluid inlet

ti11094a

Setup

8312414D

Adjust Spray Pattern

1. Rotate the air cap to achieve desired spray

pattern. See FIG. 2.

2. To achieve full fan pattern, open the air

control valve by turning the knob fully coun-

terclockwise. See FIG. 3.

3. To create a round pattern, turn the pattern

air off by turning the air control valve fully

clockwise. See FIG. 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.

FIG. 2

FIG. 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

312414D 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.

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 Compliant

Cleaning Methods, page 11.

Trapped air can cause the pump to cycle

unexpectedly, which could result in serious

injury from splashing or moving parts.

CAUTION

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.

See Troubleshooting, page 12, if you

experience an irregular pattern.

Daily Gun Maintenance

10 312414D

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 information

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 nec-

essary. Flush with a fluid that is compatible

with the fluid being dispensed and the equip-

ment wetted parts.

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.

CAUTION

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.

See Compliant Cleaning Methods,

page 11, to comply with air quality laws if

applicable.

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