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HERO Operator’s Manual – Page 19 of 23
5.1 BASIC TROUBLESHOOTING CHART (Continued)
Problem Probable Cause Solution(s)
Not Spraying At All or
Inconsistent Material Flow
(spitting) With A Cup Gun
A. Air Cap too far from Fluid
Tip
B. Dry paint on end of Fluid Tip
C. Coating is too thick: not
enough pressure to pump
from cup to Fluid Tip
D. Foreign/unwanted particles
in the coating
E. Air Pressure Feed Tube
blocked: preventing
pressurization of paint cup
F. Cup Top Gasket not sealing
properly
G. Not enough paint in cup
A. Turn Sleeve Nut clockwise to
move Air Cap closer to Fluid
Tip
B. Clean Fluid Tip and continue
spraying
C. Add more thinning solvent if
possible
D. Empty cup; clean gun (see
Basic Clean Up, Sec. 4.1);
properly filter material when
pouring back into cup
E. See Sec. 4.3, Complete
Disassembly and Cleaning Of
Spray Gun
F. Tighten cup or see Sec. 4.5,
Replacing Cup Top Gasket
G. Check level and add
Not Spraying At All or
Inconsistent Material Flow
(spitting) With A Pressure-Fed
Gun
A. Air Cap too far from Fluid
Tip
B. Dry paint on end of Fluid Tip
C. Insufficient pressure in paint
tank
D. Fluid Line blocked
E. Fluid Line kinked
F. Paint Tank not properly
sealed
G. Not enough paint in tank
A. Turn Sleeve Nut clockwise to
move Air Cap closer to Fluid
Tip
B. Clean Fluid Tip and continue
spraying
C. Increase pressure in paint
tank
D. Disconnect Fluid Line from
gun and increase air pressure
in tank to flush hose.
E. Remove kink and straighten
as necessary
F. Tighten Wing Nuts on paint
tank or replace gasket if
necessary
G. Check level and add
Paint Leaking From Fluid Tip A. Damaged Needle and/or
Fluid Tip
B. Gland Nut too tight
A. Check and replace if
necessary
B. Loosen Gland Nut
Excessive Overspray A. Too much air volume for the
coating being sprayed
B. Spraying too far from the
surface
A. Use Variable Speed
Controller to reduce air
volume output of turbine
B. Spray 6-8” from the surface
to be coated