Automated Car Wash

The pounding showers of steaming hot water lay waste to every inch of dirt trying so desperately to stay stuck to the side of your fender. You sit back and smile, knowing that the past weeks of dragging your feet and your car through the mud is finally over, and this proud vehicle that you paid so much money for will finally shine the way it was meant to. The first conveyorized automatic car washes appeared in the late 1930s. The carwash will typically start cleaning with pre-soaks applied through special arches. They may apply a lower pH (mild acid) followed by a higher pH (mild alkali), or the order may be reversed depending on chemical suppliers and formula used. Chemical formulas and concentrations will also vary based upon seasonal dirt and film on vehicles, as well as exterior temperature, and other factors. Chemical dilution and application works in combination with removal systems based on either high pressure water, friction, or a combination of both. Chemical substances, while they are industrial strength, are not used in harmful concentrations since car washes are designed not to harm a vehicle's components or finish. In order to avoid paint marking issues, "touchless" (aka "touchfree" or "no-touch") car washes were developed. A touchless car wash uses high water pressure to clean the vehicle instead of brushes, minimizing the chance of surface damage to the vehicle. There are five primary factors to cleaning a vehicle successfully using a touchless system. These five factors are water quality, water temperature, chemistry, time, and water pressure generated by the equipment. If these factors are all set properly, vehicles will come out clean and shiny without the chance of vehicle damage caused by brushes. This sound uses the following file from Freesound: http://www.freesound.org/samplesViewSingle.php?id=126879