Apparatus for cleaning and/or fluxing circuit card assemblies

Apparatus to clean or flux circuit card assemblies with a liquid, which comprises:

• a substantially liquid-tight enclosure with an entrance opening and an exit opening communicating with the interior thereof;
• means to move said circuit card assemblies along a substantially horizontal path through said interior with entry to and exit from said interior via said respective openings;
• rotating liquid dispensing means disposed above and below said path and extending laterally thereacross, said dispensing means having separate portions above and below said path adapted to dispense said liquid in a plurality of sprays directed toward said path from above and below said path;
• means to rotate said dispensing means;
• conduit means to convey said liquid separately to said portions of said dispensing means under sufficient pressure to cause said sprays to be dispensed;
• and
• a plurality of pressure regulation means disposed in said conduit means to separate control of the pressure of said liquid in each of said portions and adapted to permit the liquid in said sprays above said path to be controlled to a different pressure from the liquid in said sprays below said path.