Ultrasonic cleaners are widely recognized as providing outstanding cleaning action thanks to the cavitation produced by the equipment’s generator powered ultrasonic transducers. But when cleaning with flammable solvents it is imperative that explosion proof ultrasonic cleaners are employed in the shop, and that the equipment be located in a properly designed location known as a hazardous area.
Flammable solvents are often preferred for tough cleaning jobs such as degreasing and removing tenacious contaminants like paint and adhesive residues. As suggested, special care must be exercised when cleaning with flammable solvents under any circumstance, but especially when using an ultrasonic cleaner to both speed the process and improve cleaning results. Unless they are specially constructed, ultrasonic cleaners present two risks: sparks from internal electronics igniting spilled solvents and fumes, and vapors from solvent evaporation creating a hazardous area in the vicinity of the unit. … Read the rest