Pressure Relief Procedure - Graco 190ES 261825 Repair Manual

Pressure Relief Procedure

Pressure Relief Procedure
Follow the Pressure Relief Procedure whenever
you see this symbol.
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury
from pressurized fluid, such as skin injection,
splashing fluid and moving parts, follow the Pressure
Relief Procedure when you stop spraying and before
cleaning, checking, or servicing the equipment.
1. Turn OFF power and turn pressure control to lowest
pressure setting.
2. Hold gun against side of grounded metal flushing
pail. Trigger gun to relieve pressure.
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3. Turn prime valve down.
If you suspect the spray tip or hose is clogged or that
pressure has not been fully relieved after following the
steps above, VERY SLOWLY loosen tip guard retaining
nut or hose end coupling to relieve pressure gradually,
then loosen completely. Clear hose or tip obstruction.
4. Engage trigger safety lock on gun if unit is being
shut down or left unattended.
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