APE APE November 2019 | Page 13

INDUSTRY NEWS sweeper unit. The broom rotates in a clockwise fashion when viewed from the left side of the vehicle, and collected debris is swept onto a conveyor belt for transfer to a hopper. In recent times, the modern air sweepers appear to have many advantages over mechanical broom sweepers for gener- al sweeping use. One reason is that most mechanical sweepers only give the illusion of leaving a clean pavement surface. Al- though large debris is removed by mechanical broom sweep- ers, they are virtually ineffective at removing particles 60 microns and smaller. Studies have even shown that from an environmental standpoint mechanical broom sweepers may actually have a negative effect on the amount of storm wa- ter runoff pollution. This is because the action of the broom tends to break larger particles down into smaller ones, creat- ing more small-micron particles than there were to start with. And, whenever debris pickup is via an elevator, rather than involving any type of air/suction action, a large amount of these small particles are left on the pavement’s surface. Vacuum Sweepers Typically, there is a suction inlet on one side of the sweeping head, and then the ‘used’ air is constantly exhausted during the sweeping process. Most vacuum sweepers do not have an ES351 Mechanical street sweeper. air blast that transfers to the vacuum opening. Instead, they employ some type of broom system to brush debris toward the vacuum opening in the head. Part of the impetus for the advent of vacuum sweepers was that the majority of debris, especially the heavy debris, col- lected within 36 inches of the curb line. Vacuum sweepers are designed to do an effective job of cleaning within that area. They may well be the current top choice for ‘storm water runoff abatement sweeping,’ in areas where the majority of the debris is within 36” of the curbline. We mount on any regular cab long bed pick-up. New or Used! MODELS: • Econo - 24” Fan • 1600 - 28” Fan • 5000 - Chassis Cab Transit/ProMaster Visit our Website MASCOSweepers.com Call Us 800-345-1246 Email us for more info [email protected] For More Information On This Advertiser Please Visit www.CallAPE.com/e-inquiry 1.800.210.5923 [13] November 2019