Graco Inc 311937E, 288513, 289604 User Manual

G40 Air Assisted Spray Gun

Maximum Working Pressure: 4000 psi (280 bar, 28 MPa)
Maximum Air Working Pressure: 100 psi (7 bar, 0.7 MPa)

Model: 288513, 289604

IMPORTANT SAFETY INSTRUCTIONS. Refer to your

sprayer instruction manual for Pressure Relief, priming and
spray instructions. Keep these instructions.

311937E

ti8835a

English

The following Warnings are for the setup, use, grounding, maintenance and repair of this equipment. The exclamation point
symbol alerts you to a general warning and hazard symbols refer to procedure-specific risks. Refer back to these Warnings.
Additional, product-specific warnings may be found throughout the body of this manual where applicable.

- For the application of architectural paints and coatings -

EQUIPMENT MISUSE HAZARD

WARNINGS

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 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.

• Do not spray without tip guard and trigger guard
installed.

• Engage trigger lock when not spraying.

• Follow Pressure Relief Procedure in this manual, when

you stop spraying and before cleaning, checking, or ser­vicing equipment

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 oper-
ation immediately. Do not use equipment until you iden­tify and correct the problem.

• Keep a working fire extinguisher in the work area.

.

ids containing such solvents in pressurized aluminum
equipment. Such use can cause serious chemical reaction
and equipment rupture, and result in death, serious injury,
and property damage.

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.

PRESSURIZED ALUMINUM PARTS HAZARD

Do not use 1,1,1-trichloroethane, methylene chlo­ride, other halogenated hydrocarbon solvents or flu-

PERSONAL PROTECTIVE EQUIPMENT

You must wear appropriate protective equipment
when operating, servicing, or in the operating area
of the equipment to help protect you from serious
injury. This equipment includes but is not limited to:

• Protective eyewear

• Clothing and respirator as recommended by the fluid and
solvent manufacturer

•Gloves

• Hearing protection

Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441

Copyright 2007, Graco Inc. is registered to I.S. EN ISO 9001

Instructions/Parts

Pressure Relief Procedure

Follow this Pressure Relief Procedure whenever instructed
to relieve pressure, stop spraying, check or service equipment,
or install or clean spray tip.

1. Lock trigger. Turn OFF power and turn pressure control to
lowest pressure setting.

2. Unlock trigger. Hold gun against side of flushing pail.
Trigger gun into pail to relieve pressure.

If you suspect spray tip or hose is clogged or that pressure has

not been fully relieved after following the steps above, VERY
SLOWLY loosen tip guard retaining nut or hose end coupling

to relieve pressure gradually, then loosen completely. Clear
hose or tip obstruction.

Gun Trigger Lock

To prevent injury when the gun is not in use, always lock the
trigger if unit is being shut down or left unattended.

3. Attach blue fluid supply hose (b) to gun
fluid inlet fitting(25).

4. Attach other end of air and fluid supply
hoses to sprayer. Use two wrenches to
tighten all connections securely (see
sprayer setup instructions in sprayer
operation manual 311905.)

25

b

Installing Tip (33) and Guard (6) on Gun

1. If equipment has recently been operated, relieve pres­sure.

2. Insert seat housing (35)
into guard (6).

3. Insert SwitchTip (33).

4. Insert seal (33b) over seat
(35a) and insert in seat
housing (25). Use black
seal for water-based materials and orange for solvent and
oil-based materials.

5. Install guard (6) over end of gun. Hand tighten.

If you notice fluid leaking from front of gun, replace the
seat (33a) and/or retighten the guard nut.

6

ti8249a

35

33a

33

33b

Trigger Locked

(no spray)

ti6581a ti6582a

Trigger Unlocked

(spray)

Setup

Make sure sprayer is turned off and unplugged from power
source and trigger lock is locked. Refer to your sprayer
instruction manual for priming and spray instructions.

Connect Gun to Sprayer

1. Attach air inlet fitting (17) and fluid
inlet fitting (25) to gun.

17

25

ti9444a

Operation

Note: The following instructions are for guns used with Graco’s

FinishPro Sprayers. See the sprayer instruction manual

311905. If you are using a different sprayer, see your
equipment instruction manual.

™

If you are using a FinishPro

regulation is only provided at the gun. The FinishPro
Model Sprayers provide additional air regulation at the sprayer.

1. Unlock trigger (1a).

2. Be sure the arrow shaped tip (33) faces forward (spray).

3. Hold gun perpendicular and approximately 12-inches
(304 mm) from surface. Move gun first, then pull gun
trigger (3) to spray a test pattern.

4. Always hold gun at a right angle from the surface. Do not
make an arc with the gun. This causes an uneven coat of
fluid. To obtain an even finish, use smooth, even strokes
across the object being sprayed with a 50% overlap.

Clearing a Clog

390 Model Sprayer, air

™

395

2. For Air-Assisted spraying, first
attach black, coiled, air supply hose (a)
to gun air inlet fitting (17).
NOTE: The first time you set up the gun
for spraying you will have to cut the
black air hose to length desired.

2 311937E

a

ti9022a

17

1. Relieve pressure. Lock trigger (1a).

2. Rotate tip (33) 180°. Unlock trigger (1a). Trigger gun into
pail or onto ground to remove clog.

3. Lock trigger (1a). Rotate tip (33) 180° back to spray
position.