Troubleshooting
333011D
25
Gun Operation Troubleshooting
Problem
Cause
Solution
Excessive spray fog.
Atomizing air pressure too high.
Decrease air pressure (A1) as low as
possible
Fluid too thin.
Increase viscosity or increase fluid
flow rate.
“Orange Peel” finish.
Atomization air pressure too low.
Increase air pressure; use lowest
pressure necessary.
Spray tip is too large.
Use smaller tip; see
Spray Tip
Selection Chart
., page 45.
Poorly mixed or filtered fluid.
Remix or re-filter fluid.
Fluid too thick.
Reduce viscosity.
Fluid leaks from the fluid packing
area
Worn fluid needle packings or rod.
Replace fluid needle assembly (8);
see
Fluid Needle Replacement
,
page 31.
Air leaks from the air cap
Worn piston stem o-rings (11e, 11f)
Replace, see
Piston Repair
, page
32.
Fluid leakage from the front of the
gun
Worn or damaged fluid needle ball.
See
Fluid Needle Replacement
,
page 31
Worn fluid seat housing.
Replace; see
Air Cap/Tip Guard,
Spray Tip, and Fluid Seat Housing
Replacement
page 29.
Loose spray tip.
Tighten retaining ring (1); see
Air
Cap/Tip Guard, Spray Tip, and
Fluid Seat Housing Replacement
page 29.
Damaged tip seal (3a).
Replace; see
Air Cap/Tip Guard,
Spray Tip, and Fluid Seat Housing
Replacement
page 29.
