Lacie Spare 12big Rack Network User Manual - Page 6

LaCie 12big Rack Network User Manual Foreword page 6 Rack System Safety Precautions The following safety requirements must be considered when the unit is mounted in a rack. ✦✦ The rack construction must be capable of supporting the total weight of the installed enclosure(s) and the design should incorporate stabilizing features suitable to prevent the rack from tipping or being pushed over during installation or in normal use. ✦✦ When loading a rack with the units, fill the rack from the bottom up and empty from the top down. ✦✦ Always remove all modules and drives, to minimize weight, before loading the chassis into a rack. CAUTION: To avoid danger of the rack toppling over, under no circumstances should more than one enclosure be drawn out of the cabinet at any one time. ✦✦ The system must be operated with low pressure rear exhaust installation. (Back pressure created by rack doors and obstacles not to exceed 5 pascals [0.5mm water gauge]). ✦✦ The rack design should take into consideration the maximum operating ambient temperature for the unit, which is 35°C. ✦✦ The rack should have a safe electrical distribution system. It must provide overcurrent protection for the unit and must not be overloaded by the total number of units installed in the rack. When addressing these concerns consideration of the electrical power consumption rating shown on the nameplate. ✦✦ The electrical distribution system must provide a reliable earth for each unit and the rack. ✦✦ Each Power Supply Unit has an earth leakage current of 1.4mA. The design of the electrical distribution system must take into consideration the total earth leakage current from all the power supplies in all the units. The rack will require labelling with "HIGH LEAKAGE CURRENT. Earth connection essential before connecting supply". ✦✦ The rack when configured with the units must meet the safety requirements of UL 60950-1 and IEC 60950-1.