12
TROUBLESHOOTING
CORRECTIVE ACTION
PROBLEM
SPRAY PATTERN
/CONDITION
a) Material orifice is
clogged.
b) Material around
outside of orifice has
dried.
a) O-ring (Part #9) gets
dry or worn out.
b) Air stem bushing
(Part #8) gets loose.
c) Material orifice loosely
installed, or dirt
between orifice and
body.
a) Adjusting nut
(Part #26) improperly
adjusted.
b) Sluggish air stem.
Material orifice and
stem worn out.
Gun held too far from
surface.
Gun held too close
from surface.
a) Material cannot be
sprayed or sprayed
inefficiently.
b) Will not get a
satisfactory
atomization.
Intermittent spray
Will not get a
satisfactory spray.
Dripping from
material orifice.
Thin, sandy
coarse finish.
Thick, dimpled
finish resembling
orange peel.
a) Soak material orifice in solvent
to loosen clog.
b) Trigger material orifice
several times.
c) Take off air cap and material
orifice, clean orifice using a
bamboo or wooden toothpick.
Then wipe off air cap and
orifice with a rag moistened
with thinner.
d) Reassemble orifice and screw
air cap tight.
a) Back up the gun, put a few
drops of machine oil or replace
with new O-ring.
b) Tighten air stem bushing.
c) Take off air cap and material
orifice, clean dirt and
reassemble orifice and tighten
air cap.
a) Have adjusting nut set to a
good condition.
b) Disassemble the adjusting stop
assembly (Part #18 to #29) as
per the instructions in manual,
wipe a small amount of lithium-
based grease on stem and
O-ring (Part #21), then
reassemble.
Replace with new orifice and
stem.
Move gun closer to surface as
per the instructions in manual.
Move gun further from surface as
per the instructions in manual.
