Sunex Tools SX76 - Manual (Page 6)

SX76: Parts Breakdown & Operating Manual 6 01/07/13
One side of nozzle wing is clogged.
PROBLEM SPRAY PATTERN/
CONDITION
A.) Loose air nozzle.
B.) Material around outside of
air nozzle has dried.
A.) Atomization air pressure is set
too high.
B.) Trying to spray a thin material
in too wide a pattern.
spitting
SOLUTION
A.) Reduce air pressure.
B.) Increase material control by turning fluid
control screw to left, while reducing spray
width by turning spray width adjustment
screw to right.
Soak nozzle in solvent to loosen clog, then blow air through
until clean. To clean orifices use a broom straw or toothpick.
Never try and detach dried material with sharp tool.
A.) Tighten air nozzle.
B.) Take off air nozzle and wipe off fluid tip,
using rag moistened with thinner.
A.) Back up knurled nut, put a few drops of
machine oil on packing, re-tighten nut.
B.) Take off fluid nozzle, clean rear of nozzle and
seat in gun body. Replace nozzle and bring in
tight to body.
C.) Tighten or change out swivel nut.
A.) Packing around needle valve
is dried out.
B. Fluid nozzle loosely installed,
or dirt between nozzle
and body.
C.) Loose or defective swivel nut
on siphon cup.
fluid leakage from
packing nut. A.) Packing nut loose.
B.) Packing worn or dry. A.) Tighten, but not so tight as to grip needle.
B.) Replace packing or lubricate.
dripping from fluid tip.
A.) Dry packing.
B.) Sluggish needle.
C.) Tight packing nut.
D.) Worn fluid nozzle or needle. A.) Lubricate.
B.) Lubricate.
C.) Adjust.
D.) For pressure feed, replace with new fluid nozzle
and needle.
thin, sandy coarse finish.
thick, dimpled finish
resembling orange peel.
A.) Gun held too far from surface.
B.) Atomization pressure set
too high.
Gun held too close to surface.
A.) Move gun closer to surface.
B.) Adjust atomization pressure.
Move gun further from surface.
will not spray.
A.) No air pressure at gun.
B.) Fluid pressure too low with
internal mix cap and
pressure tank.
C.) Fluid control screw not
open enough.
D.) Fluid too heavy.
A.) Check air supply and air lines.
B.) Increase fluid pressure at tank.
C.) Open fluid control screw.
D.) Thin material or change to pressure feed.
unable to get round spray.
Fan adjustment screw not
seating properly. Clean or replace.
improper spray pattern.
A.) Gun improperly adjusted.
B.) Dirty air cap.
C.) Fluid tip obstructed.
D.) Sluggish needle. A.) Readjust gun. Follow instructions carefully.
B.) Clean air cap.
C.) Clean.
D.) Lubricate.
TROUBLESHOOTING