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

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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

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Component Identification
D
Needle Adjustment
Trigger
Tip
Trigger Lock
Tip Guard
CAUTION

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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.

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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.

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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.

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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_.

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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.

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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.

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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