Troubleshooting
3A8553A
21
Spray Pattern Troubleshooting
Problem
Cause
Solution
Fluttering spray.
Insufficient fluid supply.
Air in paint supply line.
Adjust fluid regulator or fill fluid
supply tank.
Check, tighten siphon hose
connections, bleed air from paint
line.
Spitting spray.
Worn diffuser-seat (10) or needle
(14) ball.
Dirty spray tip (9) or air cap (30).
Inspect diffuser-seat and needle for
wear. Replace if necessary.
To improve sealing when spraying
lightweight materials and sealing life
when spraying acid catalyzed
materials, use needle (SST)
available with 1/8 in. ball only, and
diffuser-seat (plastic). See Parts,
page
Clean.
Irregular pattern.
Fluid build-up or spray tip partially
plugged.
On defective side of pattern, air horn
holes are partially or totally plugged.
Clean air horn holes with solvent
and soft brush. See page 16.
Pattern pushed to one side, same
side of air cap gets dirty.
Air horn holes partially or totally
plugged.
Clean air horn holes with solvent
and soft brush. See page 16.
