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FAUL
TV SPRAV (and how to correct them)
A faulty spray is caused by imporper cleaning or dried material around the
fluid nozzle tip or in the air nozzle. Soak these parts in a solvent that will
soften the dried material and remove with
a brush
or cloth.
Never use
metal instruments
to clean the air or fluid nozzles.
These parts are care-
fully m~chined
and any damage to them
will cause a faulty spray.
if
either the air nozzle or fluid nozzle is damaged,
the part must be replaced
before a perfect spray can be obtained.
PATTERN
~
SPITTING
CAUSE
CORRECTION
Dried material in side.
port" A" restricts passage
of air. Greater flow of air
from
cleaner
side-port
uB" forces fan pattern in
direct ion of clogged side.
A
ff<~
U
'
I<'
.
J,~/)/
)
)/. .
"l~
Dissolve materia! in side-polts with
thinn;r.
tilen blow ~un clean. Do not
poke into openin~s with metal instru.
ments.
B
Dried material around
the outside of the fluid
nozzle tip at position
uC" restricts the passage
of atomizing air at one
point through the center
opening of air nonle and
results in pattern shown.
This pattern can also be
caused by loose air no7.-
zle.
fj
~
....
'-d
Remove air nozzle and Wipe off iluid
lip, using rag wet with thiuner. Ti~ht-
en air nozzle.
A split spray or one that is
heavy on each end of a fan
pattern and weak in the mid-
dle is usually caused by (I)
too high an atomizal1on air
pressure, or (2) by attempting
to get too wide a spray with
thin mat-erial,
Reducing air pressure will correct
cause (I). To correct cause (2), open
material control to full position by
turning to left. At the same time, turn
spray width adjustment to righl. This
will reduce width of spray but will cor.
rect split spray pattern,
(I) Dried out packing arol;nd
material needle valvepermits
air to get into fluid p2Ssage.
way. This results in spitting,
(2) Dirt between fluid nonle
seat :md body or !ooselyin-
stalled fluid nozzle will make
gun spit.
(3) A loose or defective swiv-
el nut on siphon cup or ma-
teria) hose can cause spitting.
To correct cause (I)
back up knurled nut
(E), place two drops
of machine oil on
packing, replace nut
and lighten with fing.
ers only. In aggra-
vated cases, replace
packing,
To correct cause (2), remove fluid noz-
zle (F), clean back of nozzle and no7..
zle seat in gun body using rag wet with
thinner,
replace nozzle and draw up
tightly against body.
To correct cause (3), tighten or re-
place swivel nut.
.
~
3
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