Page 1 SWAT Safewash Total SWAT is a specially formulated blend of non-flammable solvents which forms a micro-emulsion when mixed with water. Designed for cleaning printed circuit boards, it is ideal for the safe removal of all types of paste, adhesive and flux residues, including no-clean. Supplied as a concentrate, SWAT contains a corrosion inhibitor allowing the safe cleaning of sensitive metals including copper and aluminium. SWAT is part of the Electrolube Safewash range water-based, non-flammable, biodegradable solvent blends designed to clean to within military cleanliness standards, (ANSI-J-001B/IPC TM-650). Micro-emulsion with high solvency for removal of flux residues ideal for stubborn deposits Low foaming action suitable for use in pressure wash systems as well as ultrasonic equipment Supplied as a concentrate allows versatility and control in the production process Non-flammable product, 100% ozone friendly suitable for use in standard cleaning equipment Approvals RoHS-2 Compliant (2011/65/EU): Yes Typical Properties Appearance Clear, colourless liquid (Concentrate) Boiling Point (C) >160 Flash Point (C) Non-flammable Freezing Point (C) <-50 Density 20C (g/ml) 0.93 Viscosity 20C (mPa s) 40 pH 11 Conductivity 18C (mS) <0.2 Description Packaging Order Code Shelf Life Safewash Total 5 Litre Bulk SWAT05L 48 Months Safewash Defoamer 1 litre Bulk SWD01L 24 months 5 litre Bulk SWD05L 24 months Page 2 Directions for Use Safewash Total is a low foam cleaner, suitable for use in dishwasher and in-line pressure systems, as well as Ultrasonic and spray under immersion applications. In the event that contaminants to the cleaning solution cause foaming during use, additions of Safewash Defoamer (SWD) can be made as necessary. Spray application For a typical application, Safewash Total should be diluted to 20% with de-ionised water and applied for a wash time of 5-10 minutes at 40-60C. The specific cycle required will be dependent on the age and type of residue being removed, the re-flow profile and the effectiveness of the cleaning machine. The cleaning stage should be followed by a de-ionised water rinse and a drying stage. The length of time required for rinsing and drying the PCB depends on the circuit design and the efficiency of the rinsing/drying unit. Air-knives can be used as an optional extra to reduce temperature or total energy required. A typical cycle using a Miele 6002 Industrial Washer: 1. Cleaning, Safewash Total diluted to 20% v/v, at 50C for 10 minutes 2. Mains water rinse, 1 minute at 40C 3. De-ionised water rinse, 3 minutes at 70C 4. Hot air dry, 15 minutes at 115C Once cooled to below 30C the residues and soils will precipitate and can be filtered out of the cleaning solution, extending the life of the cleaner. Typically a 50-75 micron cotton wound filter would be suitable. Ultrasonic and spray under immersion application Application Temperature: Typically 30-40C Application Concentration: Typically 15% For immersion applications, Safewash Total should be diluted with de-ionised water to typically 15%. The cleaning time will depend on the nature of the residues and the process temperature but is typically 5-15 minutes. The wash stage should be followed by thorough rinsing in de-ionised water and drying. Solution Control There are a number of methods that can be used to monitor the concentration of the cleaning solution and the level of contamination. The suitability of the methods will depend on the specific application they can be affected by type of residue being removed by the cleaner, the quality of the water used to make the solution and also the effectiveness of the filtration system. Cleaning efficiency in the application should be monitored and the cleaning solution replaced as necessary. The following graphs provide some starting points for monitoring solutions of SWAT.