Graco SG3 Series User manual

309637

Rev. C

INSTRUCTIONS

SG3 Airless Spray Gun

– For applying architectural paints and coatings –

3600 psi (248 bar, 25 MPa) Maximum Working Pressure

246389, A

Reversible Tip Guard, 413 Tip

GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441

Graco Inc. is registered to I.S. EN ISO 9001

2 309637

Fire and explosion hazard: Solvent and paint fumes can ignite or explode.

To help prevent a fire and explosion:

DUse in an extremely well ventilated area.

DEliminate all ignition sources; such as pilot lights, cigarettes and static arcs from plastic drop cloths. Do not plug

or unplug power cords or turn lights on or off in spray area.

DGround Sprayer, object being sprayed, paint and solvent pails.

DHold gun firmly to side of grounded pail when triggering into pail.

DUse only conductive airless paint hose.

DDo not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or fluids contain-

ing such solvents in pressurized aluminum equipment. Such use could result in a chemical reaction, with the

possibility of explosion.

WARNING

Fluid injection and high pressure hazard: High pressure spray or leaks can inject fluid into the

body.

To help prevent injection, always:

DEngage trigger safety latch when not spraying.

DKeep clear of nozzle and leaks.

DNever spray without a tip guard.

DDo PRESSURE RELIEF if you stop spraying or begin servicing sprayer.

DDo not use components rated less than sprayer Maximum Working Pressure.

DNever allow children to use this unit.

If high pressure fluid pierces your skin, the injury might look like “just a cut”. but it is a serious wound!

Get immediate medical attention.

WARNING

3309637

Component Identification

Needle Adjustment

Trigger

Tip

Trigger Lock

Tip Guard

CAUTION

4 309637

1. Turn pressure to lowest setting. Turn

sprayer OFF. Unplug.

2. Set trigger lock.

PRESSURE RELIEF

3. Remove tip.

4. Remove trigger lock.

Follow 1–7 when you stop spraying.

5. Trigger gun into grounded metal bucket.

6. Set trigger lock.

7. Turn Prime/Spray valve to PRIME.

5309637

1. Relieve Pressure, page 4.

2. Loosen tip guard retaining nut.

ALIGN SPRAY

3. Turn tip guard horizontally to spray a horizontal

pattern.

4. Turn tip guard vertically to spray a vertical pattern.

6 309637

1. Set trigger lock.

2. Install tip and guard.

ADJUST SPRAY

WARNING MISE EN GARDE

ADVERTENCIA ADVERTÊNCIA

3. Tighten retaining nut.

4. Remove trigger lock.

5. Trigger gun.

6. Hold gun perpendicular and approximately 12 in. (304 mm)

from surface. Move gun first, then pull gun trigger to

spray.

7. Slowly increase the pump pressure until coverage is even

and uniform.

7309637

1. Relieve Pressure, page 4.

2. Set trigger lock.

3. Rotate tip 180_.

CLEAR CLOG

WARNING MISE EN GARDE

ADVERTENCIA ADVERTÊNCIA

4. Remove trigger lock.

5. Trigger gun into pail or onto ground to remove

clog.

6. Set trigger lock.

7. Rotate tip 180_.

8 309637

1. Relieve Pressure, page 4.

2. Set trigger lock.

3. Remove tip and guard and disconnect gun

from fluid hose.

WARNING MISE EN GARDE

ADVERTENCIA ADVERTÊNCIA

4. Release trigger lock.

REPLACE NEEDLE

5. Squeeze trigger while unscrewing the diffuser.

6. Remove locknut and end cap.

9309637

7. Tap out needle.

OLD

CLEAN

8. Clean internal passages of gun.

GREASE

SILICON

9. Grease o–rings of new needle using a nonsilicon

grease.

NEW

10. Guide new needle into gun.

LOOSE

11. Install end cap and locknut, loosely.

10 309637

12. Grease o–rings of new needle using a

nonsilicon grease.

13. Grease threads of diffuser/seat. Place

gasket on diffuser/seat.

Grease

Gasket

14. Squeeze trigger while installing gasket and

diffuser/seat. Torque to 26–32 ft lb

(19–24 NSm).

26–32 ft–lb (19–24 N.m)

SILICON

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