Graco Inc. 244581 - Manual (Page 26)

Maintenance
26 309293K
Maintenance
Flush the Spray Gun
Flush the gun before changing colors, at the end of the
day, before storing, and before repairing the gun.
1. Turn the ES ON/OFF valve OFF and wait 30 sec-
onds for the voltage to bleed off.
2. Discharge the system voltage (page 20).
3. Relieve the pressure (page 20).
4. Change the fluid source to solvent.
5. Point the gun into a grounded metal pail. Flush until
clean solvent flows from the gun.
6. Relieve the pressure.
7. Open the isolated enclosure door. Leave the flush-
ing fluid in the system until you are ready to spray
again.
8. Hang the gun from its hook, with the nozzle pointing
down. Be sure to keep the gun from grounding out.
9. Before using the system electrostatically again,
make sure no flammable vapors are present.
WARNING
Fire, Explosion, and Electric Shock Hazard
To reduce the risk of fire, explosion, or elec-
tric shock, turn the ES ON/OFF valve OFF
before flushing the gun.
Follow the Fluid Voltage Discharge and
Grounding Procedure on page 20 before
flushing.
Only flush, purge, or clean the gun with fluids that
meet at least one of the following conditions for
non-flammability:
• The fluid has a flash point above 140
°
F (60
°
C)
and a maximum organic solvent concentration of
20%, by weight, per ASTM Standard D93.
• The fluid does not sustain burning when tested
per ASTM Standard D4206 Sustained Burn Test.
WARNING
Pressurized Equipment Hazard
To reduce the risk of an injury, follow the
Pressure Relief Procedure on page 20
whenever you are instructed to relieve the
pressure.
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