CAUTION:Do not place any object weighing more than 82 kg (180 lb) on top of rack-mounted devices.S019CAUTION:The power-control button on the device does not turn off the electrical current supplied to the device.The device also might have more than one connection to dc power. To remove all electrical currentfrom the device, ensure that all connections to dc power are disconnected at the dc power inputterminals.R007DANGER• Connect power cords from devices in the rack cabinet to electrical outlets that are near the rackcabinet and are easily accessible.• Each rack cabinet might have more than one power cord. Be sure to disconnect all power cordsin the rack cabinet before you service any device in the rack cabinet.• Install an emergency-power-off switch if more than one power device (power distribution unit oruninterruptible power supply) is installed in the same rack cabinet.• Connect all devices that are installed in a rack cabinet to power devices that are installed in thesame rack cabinet. Do not connect a power cord from a device that is installed in one rackcabinet to a power device that is installed in a different rack cabinet.R004CAUTION:See the instructions in the rack documentation before you install devices, remove devices, or relocatethe rack.S03848 ThinkSystem Rear Door Heat eXchanger V2 User Guide