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About LinkBacksThe airflow on my Iwata BCS does not always stop when I let off the button. Does anyone know what most likely causes this?
Iwata BCS airflow does not always stop
The airflow on my Iwata BCS does not always stop when I let off the button. Does anyone know what most likely causes this?
Re: Iwata BCS airflow does not always stop
Did you get any paint or thinners in the trigger area?
Re: Iwata BCS airflow does not always stop
Look for debris in the air plunger & trigger areas. Typically, there would be something that has gummed up this area, preventing the trigger plunger from smoothly springing back up when you release, keeping the air valve open. A careful cleaning of the valve area, and a small amount of airbrush lube on the plunger can help.
Another potential cause is one my brushes suffered from recently. If the washers (packing o-ring) in the valve assembly is gummy or swollen, it will prevent the plunger from working correctly. In my case, I used a very aggressive solvent (which I'd never used before) and didn't realize that I had inadvertently exposed my valve assembly to the solvent & it caused the seals to swell. I don't submerge my guns in solvent, but wasn't careful enough to prevent the solvent from getting splashed into my valve. (I'm used to used mild soap & warm water to clean my guns.) I purchased new valve seals, replaced them & all is well once again.
I'd begin by looking at the condition of the valve area... if it is clean, I'd progress on to checking the valve seals. Most of the time, it's a dirty brush issue.
Scrib
AirXpression
Re: Iwata BCS airflow does not always stop
In addition to what has already been said I would also add a good filter or two to your air source and hose.
If you are using an old hose, or one that has been left out in the sun or in extremes environmentally, the lining can get brittle and start crumbling or breaking loose, that debris ends up going to your airbrush along with the air.
It doesn't happen often, but it does happen.
Never submerge your airbrush.
NEVER use ammonia or ammonia based products in or on your brush.
Never introduce solvents into the trigger well/trigger area of your brush if you can help it. That exposure to the solvents can lead to the problems Scribbler described and experienced.
Keep us posted on what you find.
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