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Gentle graffiti removal with innovative hot water pressure lances. Removing moss and fungus from a facade. the agents used. With the boiling-water method, we don’t have the tube out, switch on the machine, and go. The set-up times are to worry about these things,” explains Hans Haase, Manager of very short,” Haase emphasizes. The machine, with its water tank the external building cleaning division at R&W. And it reassures capacity of 1,100 liters, is an entirely autonomous unit that can customers. Chemical cleaning tends to make people worry about GR_kompakt_engl_90x131_4c:Azubi_Knigge_325x160 10.08.2015 09:17 Seite 1 their children, pets and garden plants. “There are no such issues with boiling water,” Haase adds. 102°C water temperature at the nozzle For perfect Waterkracht is the only provider of tested and patented hot water industrial cleaning technology for graffiti removal. The system pressurizes water up to 500 bar or just over 7,250 psi. “The way they used to try to remove graffiti was with conventional pressure cleaners that blasted cold Volume 1 of the guide series water at pressures up to 120 bar. In most cases, that simply wasn’t "Compact Industrial Cleaning" enough to get the job done. The Waterkracht machine delivers provides the theoretical under- pinning for the basics of day- much better performance, and as a stand-alone mobile is a true to-day practice. innovation. It’s a great product,” says Hans Haase. The Colorado 350 ejects water at a constant nozzle temperature Volume 2 provides trainees, of 102 °C. The boiling water is actually in the transitional phase beginners and cleaning forces to the gaseous state as it passes the nozzle. Just as the droplets with application security when hit the surface, the water turns to steam, so that even at low pres- carrying out professional sures around 150 bar, surfaces get thoroughly yet gently cleaned. cleaning work. Depending on their requirements, users can adjust the pressure and choose between different nozzles and cold, hot or boiling Volume 3 delivers the practi- water. The machine is conveniently operated via a touchscreen. cal fundamentals for working R&W was convinced after the extremely comprehensive practical security and accident preven- test. “There was this really stubborn spot, red paint on weathered tion on site. concrete. We’d tried a number of tougher approaches, but noth- All books are only available in ing really worked. The paint finally came off completely with the German language! Waterkracht system and boiling hot water at 350 bar. And no damage to the surface whatsoever.” Easy, autonomous operation For R&W, the simple operation of the machine was an important www.holzmann-medienshop.de factor in the purchase decision. “Connect the trailer, drive up, get GLOBAL CLEANING | ISSUE 2016 57


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