Specifications

TROUBLESHOOTING POSSIBLE PROBLEMS IN OPERATION
CONDITION CAUSE CORRECTION
Heavy top or
bottom pattern
Horn holes plugged. Clean. Ream with non-metallic point.
Obstruction on top or bottom of fluid
nozzle.
Clean.
Cap and/or nozzle seat dirty. Clean.
Left or right side horn holes plugged. Clean. Ream with non-metallic point.
Heavy right or
left side pattern
Dirt on left or right side of fluid
nozzle.
Clean.
Remedies for the top-heavy, bottom-heavy, right-heavy, and left-heavy patterns:
1. Determine if the obstruction is on the air cap or the fluid nozzle. Do this by making a test spray pattern. Then,
rotate the cap one-half turn and spray another pattern. If the defect is inverted, obstruction is on the air cap. Clean
the air cap as previously instructed. Also check for dried paint just inside the cap center hole opening; remove by
washing with solvent.
2. If the defect is not inverted, it is on the fluid nozzle. Clean nozzle. If problem persists, renew nozzle.
Heavy center
pattern.
Spreader adjustment valve set too
low.
Turn out counter clockwise to
achieve correct pattern.
Atomizing pressure too low. Increase pressure.
Material too thick. Thin to correct consistency.
Split spray
pattern
Air pressure too high. Reduce at regulator or gun handle.
Fluid adjusting knob turned in too far.
Turn out counter clockwise to
achieve correct pattern.
Spreader adjusting valve set too
high.
Turn in clockwise to achieve correct
pattern.
Jerky or
fluttering spray
Loose or damaged fluid nozzle/seat Tighten or replace
Loose or broken cup fluid nipple Tighten or replace cup
Material level too low Refill
Container tipped too far Hold more upright
Obstruction in fluid passage Back flush with solvent
Loose fluid needle packing nut Tighten
Damaged fluid needle packing Replace
Paint bubbles in cup
Fluid nozzle not tight.
Fluid nozzle not tight. Tighten to
70 in-lbs (8 Nm).
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