Troubleshooting
28 333394H
Spray Pattern Diagnostics
Problem Cause Solution
Spray pattern is pulsating: Operator is moving too
fast while spraying.
Slow speed of movement.
Spray tip is clogged. Unclog spray tip or clean spray
tip see Unclogging Spray Tip,
page 19.
Material difficult to
atomize.
On models with a dual speed
control switch, set speed control
to HIGH. On variable speed
models, increase speed until
desired pattern is achieved.
Hold sprayer farther away from
surface.
Switch to black (12”) spray tip.
See Installing Spray Tips,
page 18.
Spray pattern has tails: Speed control is set too
low.
On models with a dual speed
control switch, set speed control
to HIGH. On variable speed
models, increase speed until
desired pattern is achieved.
Material may need to be
thinned.
Thin material follow paint
manufacturer’s
recommendations.
Incorrect spray tip for
application of material.
Install different size spray tip.
See Installing Spray Tips,
page 18.
Material not compatible
with sprayer.
Switch material.
Spray tip is worn or
damaged.
Replace spray tip. See
Installing Spray Tips, page 18.
Spray pattern has
dripping/sagging:
Operator is moving too
slowly while spraying.
Move sprayer faster while
spraying.
Sprayer is too close to
target surface.
Move sprayer away from
surface 10 in. (25 cm)
Holding trigger while
changing spray direction.
Release trigger when changing
directions.
Speed control switch is set
too high.
On models with a dual speed
control switch, set speed control
to LOW. On variable speed
models, decrease speed until
desired pattern is achieved.
Spray tip is worn or
damaged.
Replace spray tip. See
Installing Spray Tips, page 18.
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