10 Safety and regulatory information• Leave all components in their ESD-safe packaging until installation, anduse only a static-shielding bag for all storage, transport, and handling.• Clear the area of synthetic materials such as polyester, plastic, vinyl, orstyrofoam because these materials carry static electricity that damagesthe equipment.Care of fiber optic equipmentFiber optic equipment must be kept clean and damage-free. Use theinformation in this section to properly maintain and care for fiber opticequipment.Care of fiber optic equipment navigation• "Fiber optic cable care" (page 10)• "Fiber optic connector care" (page 11)• "Job aid: connector cleaning tools and materials" (page 12)• "Cleaning single SC and FC connectors" (page 12)• "Cleaning duplex SC connectors" (page 13)• "Cleaning receptacles" (page 13)Fiber optic cable careAlthough the glass fiber of fiber optic cable is protected with reinforcingmaterial and plastic insulation, it is subject to damage. Use the followingprecautions to avoid damaging the glass fiber.• Do not kink, knot, or vigorously flex the cable.• Do not bend the cable to less than a 40 mm radius.• Do not stand on fiber optic cable; keep the cable off the floor.• Do not pull fiber optic cable any harder than you would a cable containingcopper wire of comparable size.• Do not allow a static load of more than a few pounds on any sectionof the cable.• Place protective caps on fiber optic connectors that are not in use.• Store unused fiber optic patch cables in a cabinet, on a cable rack, orflat on a shelf.Frequent overstressing of fiber optic cable causes progressive degenerationthat leads to failure.Ethernet Routing Switch 4500 SeriesInstallation — SFPs and XFPsNN47205-301 (324186-A) 01.04 Standard5.1 6 December 2007Copyright © 2007, Nortel Networks.