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Troubleshooting
WARNING
INJECTION HAZARD
To reduce the risk of a fluid injection
injury, follow the
Pressure Relief Proce-
dure
on page 9 before checking or
servicing any of the system equipment and when-
ever you are instructed to relieve pressure.
NOTE:
Check all possible remedies in the troubleshooting
charts before disassembling the gun.
Some improper patterns are caused by the
improper balance between air and fluid.
Spray Pattern Troubleshooting
Problem
Cause
Solution
Fluttering or spitting spray
9240A
Insufficient fluid supply
Air in paint supply line
Attempting to “feather” (partially trig-
ger) the gun
Adjust fluid regulator or fill fluid supply
tank.
Check, tighten pump siphon hose
connections, bleed air from paint line.
Cannot “feather” with an AA gun.
Feathering will cause drastic reduc-
tion of pressure at the tip, resulting in
poor atomization and/or spitting.
Striping spray
9240A
Spray tip orifice partially plugged
Clean or replace spray tip. See page
13.
9240A
Irregular pattern
Fluid build-up on spray tip, or spray
tip partially plugged
On defective side of pattern, air horn
holes are partially or totally plugged
Clean spray tip. See page 13.
Clean air horn holes with solvent and
soft brush. See page 13.
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 or toothpick. See page 13.
