SAFETY PRECAUTIONSIIIPlease use this unit in an appropriate power source.PRECAUTIONS WHEN MOUNTING RACKCAUTION● Do not install the VR-N900U to the rack in places where ambient temperature becomes 40˚C or more.● When rack mounting, keep the internal temperature of rack assembly 40˚C or less.● When using rack mount, keep the clearance between the rack and the rear of unit 150mm or more.● When installing this unit or the like to the rack, refer to the consumption current value of the nameplate of eachdevice so that the current capacity (including rated capacity of power supply wire) of the rack is not exceeded.● Use the rack that meets the following requirements:• must be equipped with overcurrent protection• must be equipped with protective earthing conductor power plug and socketCAUTIONBefore you mount this device in a rack, make sure that the rack is secure and in no danger of tipping over.To prevent bodily injury when mounting or servicing this unit in a rack, you must take special precautions to ensure that the systemremains stable.The following guidelines are provided to ensure your safety:This unit should be mounted at the bottom of the rack if it is the only unit in the rack.When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest component at the bottomof the rack.If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the unit in the rack.