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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 179–960,
provided with the gun, with the operator of this
equipment at all times. The card contains important
treatment information should an injection injury
occur. Additional cards are available at no charge
from Graco.
Opening and Closing the ON/OFF Lever
Always fully open or fully close the ON/OFF lever (B).
Any other position will quickly damage the valve seat,
and the ON/OFF ball valve (8) may not completely
stop the flow of fluid when closed.
T o open the ON/OFF lever (B), slide the safety ring
(20) off the lever and pull the lever completely back,
toward yourself. See Fig. 2.
T o close the ON/OFF lever (B), push the lever com-
pletely forward, toward the spray tip, and slide the
safety ring (20) over the lever. See Fig. 2.
B
2
1
ON/OFF lever in open position.
2
ON/OFF lever in closed position.
Fig. 2
Operation
B
1
8
20
06302
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:
are instructed to relieve the pressure,
stop spraying,
check or service any of the system equipment,
or install or clean the spray tip.
1. Fully close the gun ON/OFF lever (B). See Fig. 2.
2. Slide the safety ring (20) over the gun ON/OFF
lever.
3. Close the pump air regulator.
4. Close the bleed-type master air valve (required in
the system).
5. Slide the safety ring off the gun ON/OFF lever.
6. Hold a metal part of the gun firmly to the side of a
grounded metal waste container and open the gun
ON/OFF lever to relieve the fluid pressure.
7. Fully close the gun ON/OFF lever, and slide the
safety ring over the lever.
8. Open the pump drain valve (required in the sys-
tem) to help relieve fluid pressure in the displace-
ment pump. Triggering the gun to relieve pressure
may not be sufficient. Have a container ready to
catch the drainage.
9. Leave the drain valve open until you are ready to
spray again.
10. 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 , v ery
slowly loosen the hose end coupling and relieve
pressure gradually, then loosen the coupling
completely. Now clear the tip or hose obstruction.
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