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Graco 390 Repair Manual

Graco 390
30 pages
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Pressure Relief Procedure
310824C 7
Pressure Relief Procedure
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.
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.
WARNING
Follow this Pressure Relief Procedure whenever you
are instructed to relieve pressure, stop spraying, check
or service equipment or install or clean spray tip. Read
Injection Hazard Warning, page 3.
FLUSH
ti5310a
ti5304a

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Graco 390 Specifications

General IconGeneral
Max Pressure3300 PSI
Flow Rate0.47 GPM
Weight30 lbs
Power SourceElectric
TypeAirless
Hose Length50 ft
Voltage120V
Horsepower0.625 HP

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