Here are six common spray problems that can occur when finishing cabinets, furniture and other wood products, and how to solve them.
Problem: Round spray uneven
Cause/solution: Middle air cap air passage may be dirty or deformed. Clean thoroughly or replace nozzle set if required.
Problem: Sickle spray pattern
Cause/solution: Air cap horn may be dirty or deformed. Clean the air horn passages or replace nozzle set.
Problem: Deformed spray pattern on one side
Cause/solution: Dirty or deformed holes in the air cap horns. Clean the nozzle with a special cleaning kit or replace the nozzle set.
Problem: Split fan (swallow-tail)
Cause/solution: Too much thinner in the material. The spray pressure may be too high or the fan width too wide.
Problem: Material deposit is too heavy in a fan pattern
Cause/solution: The atomization pressure is too low – increase pressure. The viscosity may be too high – add thinner to the material. Or, too much material – use a smaller nozzle set.
Problem: An irregular or fluttering fan pattern
Cause/solution: The fluid tip or needle is loose – tighten the parts. The paint cup may be plugged – clean the air vent hole (lid vent). It could also be the air distribution ring – replace it.
Source: SATA. For information call 800-533-8016 or visit SATAusa.com.
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