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The brush should contain no metal. (Metal bristles or fibers can create a safety <br /> hazard if individual bristles break off and become lodged in the turf or rubber <br /> fill). <br /> The brush setting should be checked often. The actual setting depends on the <br /> model and type of sweeper. The sweeper will work best when the brush is set so <br /> it just touches the tips of the fibers of the turf. DO NOT SET THE BRUSH SO <br /> LOW THAT IT DIGS INTO THE TURF PILE, THE FILL MATERIAL OR <br /> THE TURF BACKING. A brush setting that is too low can damage the artificial <br /> grass and adversely disturb the fill. <br /> Do not use a mechanical sweeper during the heat of the day if the temperature <br /> exceeds 90 degrees F. <br /> C. Vehicles <br /> Vehicles are not allowed on the field at any time. Only approved off-road type <br /> equipment may be driven on the field. The Contractor shall use caution not to <br /> spin the tires, turn sharply, or in any way maneuver the piece of equipment where <br /> it will damage the synthetic turf. <br /> 1. Oil and Fuel Spills <br /> Oil and fluid spills can discolor and even damage the artificial grass. Proper <br /> equipment maintenance shall be observed. Battery acid and most other fluids <br /> should not be allowed on the artificial grass. Never change or add fluids to <br /> equipment while the equipment is parked on the artificial surface. <br /> D. Stains <br /> The Contractor shall be responsible for removing stains on the synthetic turf. <br /> Polyethylene fibers are stain resistant fibers because most stains are moisture <br /> borne and polyethylene, a "hydrophobic" yarn, absorbs little moisture. As a <br /> <br /> result, a "stain" on a synthetic turf field is not a true "stain"; rather, it is generally <br /> dried residue of foreign matter, which must be quickly and thoroughly removed. <br /> It is best removed while still moist and thus before it has dried on the fibers. <br /> These residues can generally be removed with water or soap and water. <br /> <br /> Remember, it is much easier to clean a fresh spill before it has time to dry and <br /> <br /> harden. Remove any deposit promptly using a putty knife or similar tool. Then <br /> soak up excess liquids with paper or cloth towels or rags. <br /> 25A-7 <br /> <br />