TROUBLESHOOTING
SPRAY PATTERN/PROBLEM POSSIBLE REASON
Improper spray pattern
Improper spray pattern
Intermittent/
sputtering spray
Improper spray pattern
Unable to get round
spray
1) Atomization air
pressure is set too
high.
2)Material too thin;
fluid adjustment
turned in too far.
3)Fan pattern open
too far.
1)Atomization air
pressure is set too
low.
2)Material too thick.
3)Fan pattern closed
too far.
1)Material level too
low.
2)Container tipped
too far.
3)Loose fluid inlet
connection.
4)Needle seat loose/
damaged.
5)Packing around
needle valve is
dried out or loose.
6)Fluid nozzle loosely
installed, or dirt
between nozzle and
body.
7)Clogged air vent.
1)Gun improperly
adjusted.
2)Dirty air cap.
3)Nozzle tip
obstructed.
4)Sluggish needle.
Fan adjustment screw
not seating properly.
20
SOLUTION
1)Reduce atomization air
pressure.
2)Open fluid adjustment
knob.
3)Partially close pattern
adjustment knob.
1) Reduce atomization air
pressure.
2) Thin to proper viscosity.
3) Partially open pattern
adjustment knob.
1) Refill.
2) Hold more upright.
3) Tighten.
4) Adjust or replace.
5) Lubricate/tighten.
6) Remove, clean, tighten.
7) Clean vent hole.
1)Re-adjust gun. Follow
instructions carefully.
2)Clean air cap.
3)Clean.
4)Lubricate.
Clean or replace.