Graco Airlessco PRO-DUTY Series Repair Manual page 6

Pressure Relief
6. Hold a metal part of the gun firmly to a
grounded metal pail. Trigger the gun to
relieve pressure.
7. Engage the trigger lock.
6
8. Open any fluid drain valves in system.
Leave drain valves open until ready to
spray again.
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9. If you suspect the spray tip or hose is
clogged or that pressure has not been
fully relieved:
a.
b.
c.
VERY SLOWLY loosen tip guard
retaining nut or hose and coupling to
relieve pressure gradually.
Loosen nut or coupling completely.
Clear hose or tip obstruction.
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