[volt-nuts] PCB cleaning and sealing

[Dr. Frank Stellmach]

  Andreas,

I simply use products from Kontakt Chemie.
http://www.crcind.com/csp/web/home.csp

Kontakt LR = Kontakt PCC for chemical and mechanical cleaning (flux 
residuals, water, dirt), afterwards Plastik 70 for sealing to avoid 
corrosion, oxydation, leakage currents.

Good ventilation during application is important for all solvents, which 
have a good cleaning effect.
They all are poisonous and  evaporate easily.

To my experience, propyl alcohol is not strong enough, and acetone may 
harm PCB and components.
The additional mechanical cleaning by a brusch helps a lot.

Frank