Top 10 troubleshooting tips - part 2



4) Media/color seeping to rear of airbrush:A. Damaged or worn PTFE inner seal / If seal is not adjustable, it needs to be replaced. Check manufacturer suggestion for seal replacement. If seal is adjustable, attempt to tighten it using a small eye glass screw driver inserted through the rear of the airbrush body, and into the PTFE seal adjusting screw, turning the seal adjusting screw clock-wise in ¼ turn increments.

5) Spray will not shut off and/or occurs without sliding the trigger back:A. Improper seating of the needle in the paint tip / Re-seat the needle by loosening the needle chuck/lock nut and sliding the needle forward until it stops and seats in the nozzle tip, then re-tighten the needle chuck/lock nut. DO NOT USE FORCE when seating the needle in the nozzle tip, when it stops it should be seated properly.B. “Flared” paint tip / Replace the paint tip.C. Partial tip dry / Remove the dried paint from the paint tip by picking it off with your finger nails or spraying cleaner through the airbrush. If tip dry occurs frequently in your application, it is helpful to keep a paint brush and water nearby to wet the paint tip when necessary to get your airbrush spraying properly again. Tip dry will occur more frequently during detail airbrushing applications, and when spraying at higher air pressures.

6) Spray pattern pulsation: A. Damaged seal / Low levels of air leakage are common, and should not adversely affect an airbrush’s spray performance. Check all threaded parts and seals to ensure there is no excessive air leakage at any of these points. The air hose connection at the airbrush should be properly sealed. If there is air leakage at this connection, it can be effectively sealed with the wrapping of PTFE “plumber’s” tape around the male threaded part. The airbrush also has an inner seal that the needle passes through. If the airbrush’s inner seal is not sealing properly, it needs to be replaced. Check manufacturer direction for seal replacement. On airbrushes with head assemblies that thread into the airbrush body –an o-ring type seal is necessary between the head assembly and the airbrush body. If this seal is damaged, it needs to be replaced.B. Inconsistent media viscosity / paint should be adjusted to proper spraying viscosity. The rule of thumb for preparing media for airbrushing is to thin to the equivalent viscosity of skim milk. As starting paint viscosities vary from color to color, even within the same paint brand, it is best to avoid fixed thinning ratios. C. Inadequate air supply / it may be necessary to repair or replace the air supply.
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