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Troubleshooting
311052H 19
Spray Pattern Troubleshooting
Problem Cause Solution
Fluttering spray. Insufficient fluid supply.
Air in paint supply line.
Adjust fluid regulator or fill fluid sup-
ply tank.
Check, tighten siphon hose connec-
tions, 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 materi-
als, use needle (SST) available with
1/8 in. ball only, and diffuser-seat
(plastic). See Parts, page 25.
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 spray tip. See page 15.
Clean air horn holes with solvent and
soft brush. See page 15.
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 15.