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308813 9
Operation
Safety
WARNING
INJECTION HAZARD
Remember, this is not an air spray gun.
For your safety be sure to read and
follow the Warnings on pages 2 and 3
and throughout the text of this instruction
manual.
Keep the wallet sized warning card, provided with
the gun, with the operator of this equipment at all
times. The card contains important treatment
information should an injection injury occur. Addi-
tional cards are available at no charge from Graco.
Pressure Relief Procedure
WARNING
INJECTION HAZARD
The system pressure must be manually
relieved to prevent the system from
starting or spraying accidentally. Fluid
under high pressure can be injected through the
skin and cause serious injury. To reduce the risk of
an injury from injection, splashing fluid, or moving
parts, follow the Pressure Relief Procedure
whenever you:
D are instructed to relieve the pressure,
D stop spraying,
D check or service any of the system equipment,
D or install or clean the spray tip.
1. Shut off the power to the pump.
2. Close the bleed-type master air valve (required in
the system).
3. Trigger the gun to relieve the fluid pressure.
4. Open the pump drain valve (required in the sys-
tem) to help relieve fluid pressure in the displace-
ment pump. In addition, open the drain valve
connected to the fluid pressure gauge (in a system
with fluid regulation) to help relieve fluid pressure
in the hose and gun. Triggering the gun to relieve
pressure may not be sufficient. Have a container
ready to catch the drainage.
5. Leave the drain valve(s) open until you are ready
to spray again.
6. If you suspect that the spray tip or hose is com-
pletely clogged or that pressure has not been fully
relieved after following the steps above, very
slowly loosen the hose end coupling and relieve
pressure gradually, then loosen the coupling
completely. Now clear the tip or hose obstruction.
Install a Spray Tip
WARNING
INJECTION HAZARD
To reduce the risk of an injection injury,
follow the Pressure Relief Procedure
at left before removing or installing a
spray tip.
WARNING
INJECTION HAZARD
To reduce the risk of component rupture
and serious injury, including injection, do
not exceed the gun’s maximum fluid
working pressure (see the front cover) or the
maximum working pressure of the lowest rated
component in the system.
1. Make sure there is no pressure in the system.
Follow the Pressure Relief Procedure at left.
Models 239786 and 241469
with GG0 and GG1 Series Spray Tips
2. Install the spray tip (H) and the gasket (J) in the tip
retainer nut (K). Screw the assembly firmly onto
the gun. Tighten the assembly with a wrench. See
Fig. 6.
Fig. 6
K
H
J
8577A
NOTE: Gaskets are included with Streaming Tips
270XXX or Fan Tips 182XXX (used with Model 233670
Sealant Gun).