User's Manual

Troubleshooting
26 313227C
Gun Operation Troubleshooting
Problem Cause Solution
Excessive spray fog. Atomizing air pressure too high. Decrease air pressure as low as
possible.
Fluid too thin. Increase viscosity.
“Orange Peel” finish. Atomizing air pressure too low. Increase air pressure; use lowest air
pressure necessary.
Poorly mixed or filtered fluid. Remix or refilter fluid.
Fluid too thick. Reduce viscosity.
Fluid leaks from the fluid packing
area
Worn packings or rod. Replace packings or rod; see pages
32 or 33.
Air leaks from the air cap Worn piston stem o-rings (16e, 16f). Replace; see page 34.
Fluid leakage from the front of the
gun
Worn or damaged packing rod (8). Replace; see page 32
Worn fluid seat. Replace fluid nozzle (4) and/or elec-
trode needle (7); see pages 30 to
31.
Loose fluid nozzle (4). Tighten; see page 30.
Damaged nozzle o-ring (4b). Replace; see page 30.
Gun does not spray Low fluid supply. Add fluid if necessary.
Damaged air cap (3). Replace; see page 30.
Dirty or clogged fluid nozzle (4). Clean; see page 30.
Damaged fluid nozzle (4). Replace; see page 30.
Piston (16) not actuating. Check cylinder air. Check piston
u-cup (16d); see page 34.
Actuator arm (29) is out of position. Check actuator arm and nuts. See
page 35.
Dirty air cap Misaligned air cap (3) and fluid noz-
zle (4).
Clean fluid buildup off air cap and
fluid nozzle seat; see page 20.
Damaged nozzle orifice. Replace nozzle (4); see page 30.
Fluid is coming on before the air. Check actuator arm and nuts. See
page 35.
Air leaks from manifold Manifold is not tight. Tighten manifold screws (106).
Fluid leaks at the quick-disconnect. Manifold is not tight. Tighten manifold screws (106).
Fluid hose o-rings are worn or miss-
ing.
Inspect or replace o-rings.