SETT ATT RENA EN FORORENAD ARTIKEL MED HJELP AV EN LOSNINGSMEDELSBLANDNING SAMT ANORDNING FOR GENOMFORANDE AV SETTET

摘要

Printed circuits are cleaned by passing them through a heated non-azeotropic solvent mixture comprising a halogenated hydrocarbon solvent preferably fluorochlorohydrocarbons containing two or three carbon atoms and an auxiliary solvent such as n-butanol, alkoxy alcohols, or cyclic ethers contained in a sump compartment and then rinsing them in a similar body of a solvent mixture but containing a lower proportion of the auxiliary solvent in a rinsing compartment.