Installing the system unit onto the rail assembly

You might need to install the system into a rack. Use the procedure in this section to perform this task.

1. Attach the four knobs B to the system unit as shown in Figure 1.
   Figure 1. Attach knobs to system unit.

   
2. Fully extend both rails.
3. Using three people, grasp the handles C located on each side of the system unit, and position the system unit on the extended rails as shown in Figure 2. Align the three holes in the inner rails with the holes in the sides of the system unit.
   CAUTION:
   This unit weighs between 32 kg (70.5 pounds) and 55 kg (121.2 pounds). Three people are required to safely move it. Using fewer than three people to move it can result in injury.
   
   Figure 2. Attaching the rails to system.

   
4. Attach the rails E to each side of the system unit by using the system-to-rail screws F. Tighten each of the screws with a screwdriver or similar tool.
5. Remove the four knobs, B.
6. Simultaneously release the blue safety latches, G, located near the front of each system rail assembly, and push the system unit into the rack as shown in Figure 3.
   Figure 3. Release the safety latches.

   
7. Slide the system unit into and out of the rack two or three times to align the system unit to the rails. The system unit should glide on the rails.
8. Push the system unit into the rack. Using a screwdriver or similar tool, tighten the two retaining screws that secure the slide rails to the back of the rack.
9. Slide the system unit halfway out of the rack.
10. Using a screwdriver or similar tool, tighten the front four retaining screws that secure the slide rails to the frame of the rack.
    Note: After the system rails are installed, do not extend them past their safety latches. The safety latches prevent the rails from overextending and separating, thereby preventing the system unit from being pulled out too far and being dropped.
11. Slide the system unit into the rack.
    Attention: If it does not slide smoothly, loosen the six rail-retaining screws (front and back), and repeat steps 6 through 11.
12. Install the service access cover. Refer to Replace the front cover.
13. Install the rack latch brackets. Refer to Installing or removing a rack-mounted system-unit latch bracket.
14. To provide additional stability when transporting the rack, fasten the system unit to the rack by inserting the two system-retaining thumbscrews I through the front cover H, and screwing them into the rack frame as shown in Figure 4.
    Note: If you are installing the retaining thumbscrews, you will need to install the optional bezel on the front of the system.
    Figure 4. Secure the system unit to the rack.