Graco 249377 Paint Sprayer User Manual


 
Operation
311051F 17
Operation
Pressure Relief Procedure
1. Turn off all bleed type air valves and all other air and
fluid supplies to the gun.
2. Trigger the gun into a grounded metal waste con-
tainer to relieve air and fluid pressure.
Apply Fluid
The spray gun has a built-in lead and lag operation.
When triggered, the gun begins emitting air before the
fluid is discharged. When the trigger actuation air is
stopped, the fluid stops before the air flow stops. This
helps ensure that the spray is atomized and prevents
fluid buildup on the air cap and tip.
Adjust the system control device, if it is automatic, so the
gun starts spraying just before meeting the part and
stops as soon as the part has passed. Keep the gun a
consistent distance, 6 to 8 in. (150 to 200 mm), from the
surface of the object being sprayed.
To achieve best results when applying fluid:
Keep gun perpendicular and 6 to 8 in. (150 to 200
mm) from object being sprayed.
Use smooth, parallel strokes across surface to be
sprayed with 50% overlap.
FIG. 14: Pressure Relief
TI8174a
FIG. 15: Correct Spray Method
TI8098a
TI8099a
Correct
Incorrect