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D-5-55 DETAIL SPRAY GUN
Troubleshooting
WARNING
Follow Pressure Relief Procedure, page 3, before troubleshooting or servicing. Read warnings, page 2.
Problem
Normal pattern
Right
Dirty or damaged air cap or fluid nozzle.
Wrong
Heavy top or
bottom pattern
Pressure too high for viscosity of material
being sprayed.
Wrong
Split pattern
Dirty or distorted air horn holes.
Wrong
Will not spray.
a. Cup is not tight
b. Cup empty.
c. Air cap not seated.
a. Air pressure too low.
b. Gun held too close to surface.
Wrong
Heavy pattern or
orange peel
Cause
No action necessary
Rotate air cap 180°.
If pattern follows air cap, problem is in air cap. Clean and
inspect. If pattern is not corrected, replace air cap.
If pattern does not follow the air cap, the problem is with the
fluid nozzle. Clean and inspect the nozzle. If the pattern is
not corrected, replace nozzle.
a. Reduce air pressure.
b. Increase material viscosity
c. Correct pattern by narrowing fan size with spray width
Rotate air cap 180°.
If pattern follows air cap, problem is in air cap. Clean and
inspect. If pattern is not corrected, replace air cap.
a. Tighten cup lid.
b. Fill cup.
c. Turn spray width adjustment knob fully counterclockwise.
a. Increase air pressure.
b. Hold gun about 6-8 inches (150-200 mm) from surface.
5
Solution
adjustment knob.
Tighten air cap.
309991C
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