Graco 3A4803A, Операция, Запчасти

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Troubleshooting
38 3A4803A
Spray Pattern Diagnostics
Problem Cause Solution
Spray pattern is uneven: Operator is moving too
fast while spraying.
Slow speed of movement.
Spray tip is clogged. Unclog spray tip or clean spray
tip see Clear Tip Clog , page 17.
Material difficult to
atomize.
Increase speed until desired
pattern is achieved.
Hold sprayer farther away from
surface.
Switch to different spray tip. See
Tip and Pressure Selection ,
page 15.
Outlet valves are dirty or
worn.
Remove two pump plugs and
front valve to gain access to the
three outlet valves, see
Cleaning Outlet Valves , page
29. Clean outlet valves.
Replace if necessary.
Pump has reached the
end of its life.
Replace pump assembly.
Spray pattern has tails: Speed control is set too
low.
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 Tip and Pressure
Selection , page 15.
Material not compatible
with sprayer.
Switch material.
Spray tip is worn or
damaged.
Replace spray tip. See Spray
Tip Installation , page 24.
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.
Decrease speed until desired
pattern is achieved.
Spray tip is worn or
damaged.
Replace spray tip. See Spray
Tip Installation , page 24.
Spray pattern is too narrow: Sprayer is too close to
target surface.
Move sprayer away from
surface 10 in. (25 cm)
Incorrect spray tip for
application of material.
Install different size spray tip.
See Spray Tip Installation ,
page 24.
Spray tip is worn or
damaged.
Replace spray tip. See Spray
Tip Installation , page 24.