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productionmachining.com :: 49 ?????? Cleaning Ultrasonic Cleaning to consider is service volume, which is the amount of solution needed to accommodate displacement by parts being cleaned when fully immersed. Specifcations are provided in user manuals. Overflling the tank does not improve efciency; under- flling the tank does not intensify cleaning and can damage the tank. Te service volume statistic is important; it allows safe solution mixing, degassing and heating when baskets are empty. Cleaning efectiveness is extended when solutions are maintained. Oily contaminants that foat to the surface should be skimmed of and set aside. Spray bars and weirs can handle this function on large tanks. Filtration systems trap contaminants that damage the tank if allowed to settle and remain on the bottom, but eventually solutions must be replaced by draining the tank and abiding by local disposal regulations. Te tank should be cleaned following user manual instructions. Rinsing spray stations, rinsing tanks and hot air dryers can be employed for product rinsing and drying, which may be required to remove solution residues prior to painting, plating, anodizing or subsequent fnishing steps. Explosion Proof Flammable solvents such as acetone, isopropyl alcohol, methyl ethyl ketone and toluene may be required for cleaning products that must have a total absence of residues. In such cases, explosion-proof ultrasonic cleaners (such as the Electrowave version) that comply with OSHA standards and NEC and NFPA guidelines can be used. Tese units completely isolate potential spark-gener- ating system electronics from contact with solvent vapors or spilled solvent and are available with tank capacities from less than a gallon to as large as 90 gallons. Tey are not equipped with heaters. Because solvents evaporate quickly, operators must maintain a solvent level of more than half the tank capacity or risk damaging transducers. While Electrowave ultrasonic cleaner equipment is explosion proof, operating it creates a hazardous area because of cleaning solvent fumes. Fumes must be vented using approved ventilation systems. All electrical equip- ment, wiring, lighting fxtures, outlets and similar equip- ment must be rated as intrinsically safe by the National Electric Code, NFPA-70 Articles 500-503. In the Shop Production machining applications may have various levels of cleaning requirements, and ultrasonic cleaning systems generally can meet these needs. Once equipment is in For similar articles about parts cleaning equipment and processes, visit PM's Parts Cleaning zone. LINK :: short.productionmachining.com/cleaning place, plant personnel will gain experience with preparing the correct amount of cleaning solution, optimum cleaning solution temperatures and cleaning times for their specifc applications. Once routines are established, ultrasonic cleaners can be programmed by time, temperature, frequency and other variables, depending on features that the equipment ofers. For more information from Tovatech LLC, call 973-913- 9734 or visit tovatech.com. CONTRIBUTOR Tovatech Director Dr. Bob Sandor has more than 15 years of experience managing high tech businesses. He led the startup and grow th of fve technolog y companies and has authored more than 40 patents and technical publications. n Precise, Flexible Parts Cleaning: Patented Indexing Rotary Table Design. n Robot-Ready. n Easy to Operate: Powerful Siemens Controls. n Maintenance-Friendly: Easy Access, and QR Codes to Simplify Parts Replacement. ctgclean.com | 8 00.76 6.6 6 0 4 Now THAT'S... The New LEAN JET ® RT-18 Parts Washer SMART!