Pressure Relief Procedure - Graco 390 Instructions Manual

Pressure Relief Procedure

Follow the Pressure Relief Procedure when-
ever you see this symbol.
This equipment stays pressurized until pressure
is manually relieved. To help prevent serious
injury from pressurized fluid, such as skin injec-
tion, splashed fluid and moving parts, follow the
Pressure Relief Procedure whenever sprayer
is stopped and before sprayer is cleaned or
checked, and before equipment is serviced.
1. Turn ON/OFF switch to the OFF position. Wait 7-10
seconds for power to dissipate.
2. Engage the trigger lock.
2
3. Turn pressure control to the lowest setting. Disen-
gage the trigger lock.
4. Hold a metal part of the gun firmly to a grounded
metal pail. Trigger the gun to relieve pressure.
5. Engage the trigger lock.
6. Turn the prime valve down. Put drain tube in a pail.
Leave prime valve in the down (drain) position until
you are ready to spray again.
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Pressure Relief Procedure
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