Table of Contents
Advertisement
PageS
SB-2-552-D
TROUBLESHOOTING
CONDITION
CAUSE
CORRECTION
Heavy top or bottom pattern
Horn holes plugged.
Clean. Ream with non-metallic point.
object such as a toothpick.
' '
Obstruction on top or bottom of fluid tip 3A.
Clean.
Cap and/or tip seat dirty.
Clean.
Heavy right or left side pattern
Left or right side horn
holes
plugged.
Clean. Ream with non-metallic point
object such as a toothpick.
) (
Dirt
on
left or right side of fluid tip.
Clean.
Remedies for top-heavy, bottom-heavy, right-heavy and left-heavy patterns:
1) Determine
if
obstruction is on the cap or fluid tip. Do this
by
making a test
pattern. Then, rotate cap one-half turn and spray another pattern. If defect
is inverted, obstruction is on air cap. Clean air cap as previously instructed.
2)
If defect is not inverted,
it
is on fluid tip. Check for a fine burr on edge of
fluid tip. Remove with #600 wet or dry sand paper.
3)
Check for dried material just inside opening. Remove by cleaning.
Heavy center pattern
t
Material flow exceeds
~ir
cap's capacity.
lower fluid flow.
Atomizing pressure too low.
Increase pressure.
Split spray pattern
I
Needle adjusting screw (13) turned in too far.
Back out counterclockwise to
achieve proper flow.
Atomization air pressure too high.
Reduce air pressure.
Jerky or fluttering spray
*loose or damaged fluid tip (3A) seat.
Tighten or replace.
0111111
1
Material level too low.
Refill.
Container tipped too far.
Hold more upright.
Obstruction in fluid passage.
Clean according to material
supplier's recommendations.
loose or broken fluid tube or fluid inlet
Tighten or replace.
adapter (29).
Dry packing (16) or loose packing nut (15).
lubricate or tighten.
WUI not spray
No air pressure at gun.
Check air supply and air lines.
Needle adjusting screw (13) not open enough.
Open needle adjusting screw.
Excessive overspray
Too much atomization air pressure.
Reduce pressure.
Gun too far from work surface.
Adjust to proper distance.
Improper stroking (arcing, gun motion too fast).
Move at moderate pace, parallel
to work surface.
Dry Spray
Air pressure too high.
Decrease air pressure.
Gun tip too far from work surface.
Adjust to proper distance.
Gun motion too fast.
Slowdown.
Gun out of adjustment.
Adjust.
Fluid leaking from packing nut
Packing nut (15) loose.
Tighten, do not bind needle.
Packing (16) worn or dry.
Replace or lubricate.
Advertisement
Table of Contents
