Flush The Spray Gun - Graco PRO AA5500sc unicarb Instruction Manual

Daily Care and Cleaning (continued)
WARNING
INJECTION HAZARD
To reduce the risk of a serious injury,
including fluid injection, follow the Pres-
sure Relief Procedure on page 17
before doing any maintenance on the gun or sys-
tem.
D Clean the fluid and air line filters daily.
D Clean the outside of the gun daily with a soft cloth
dampened in a compatible solvent.
D Clean the air cap, spray tip, and tip guard daily,
minimum. Some applications require more frequent
cleaning. See Clean the Spray Gun, page 23.
Replace the parts if they are damaged.
D Check the electrode wire: straighten it if it is bent
and replace it if it is broken or damaged. See
Electrode Replacement, page 34.
D Check for fluid leakage from the gun and fluid
hoses. See Check for Fluid Leakage, page 25.
Tighten fittings or replace equipment as needed.
D Check all of the work hangers for fluid buildup;
clean them if necessary.
D Flush the gun before changing colors and when-
ever you are done operating the gun.
WARNING
FIRE, EXPLOSION, AND
ELECTRIC SHOCK HAZARD
To reduce the risk of a fire, explosion, or
electric shock, be sure the turbine air
(TA) is off before flushing the gun or any
part of the system.
22 308937
Maintenance

Flush the Spray Gun

when you stop spraying and whenever you are
instructed to relieve the pressure.
1. Relieve the system pressure.
2. Make sure the turbine air (TA) is turned off.
3. Remove the retaining nut (1), tip guard (12), air
cap (15), fluid tip (13), and gun shroud (2). See
Fig. 17. Set these parts aside.
NOTE: You may have to turn the air cap with the
tip guard to remove the air cap from the gun.
4. Make sure the air and paint supply is turned off.
5. Turn on the solvent supply. Use the lowest pos-
sible fluid pressure when flushing.
6. Turn on the cylinder air to trigger the gun.
7. Flush the gun, spraying into a grounded metal
container until there are no traces of paint in the
solvent.
8. Turn off the solvent supply.
9. Relieve the system pressure.
Fig. 17
WARNING
INJECTION HAZARD
To reduce the risk of a serious injury,
including fluid injection, follow the Pres-
sure Relief Procedure on page 17
2
13
15
12
1
8798A