iContentsPreparing for installation ················································································ 1Safety recommendations ··································································································································· 1Safety symbols ··········································································································································· 1General safety recommendations ·············································································································· 1Electricity safety ········································································································································· 1Laser safety················································································································································ 2Examining the installation site ···························································································································· 2Temperature and humidity ························································································································· 2Cleanliness················································································································································· 2Cooling system··········································································································································· 3ESD prevention ·········································································································································· 3EMI ····························································································································································· 4Lightning protection ···································································································································· 4Rack-mounting ··········································································································································· 5Installation tools and accessories ······················································································································ 5Pre-installation checklist····································································································································· 6