Dell PowerEdge 6850 - Manual (Page 58)

Installing the Cooling Shroud
1. Align the four tabs on the sides of the shroud with the four slots on the chassis. See Figure 6 -4 .
2. Slowly lower the shroud straight down into the system.
3. Gently press down on the circular icons on top of the shroud.
Power Supplies
Removing a Power Supply
1. Disconnect the power cable from the power source.
2. Disconnect the power cable from the power supply.
3. Press the lever release latch, then open the lever and slide the power supply out of the chassis. See Figure 6 -5 .
Figure 6-5. Installing and Removing a Power Supply
NOTE: The 1470-W power supplies require 200–240 V to operate. If they are plugged into 110-V electrical outlets, the power supplies do not power up.
NOTICE: The system is in the redundant mode when two power supplies are installed and both power supplies are connected to an AC power source.
Remove and replace only one power supply at a time in a system that is powered on.
NOTE: You may have to unlatch and lift the cable management arm if it interferes with power-supply removal. For information about the cable
management arm, see the system's Rack Installation Guide.