Installing the system unit on the rail assembly

You might need to install the system unit on the rail assembly. Use the procedure in this section to perform this task.

1. Using the eight rail-to-system-unit retaining screws A in Figure 1, four on each side, mount the inner rails B to each side of the system drawer. Tighten each of the screws with a screwdriver or similar tool.
   Figure 1. Attaching the system rails and slide the system unit onto the rail assembly.

   
2. Ensure that the rails on the rack are extended and latched.
3. Using three people, grasp the two handles located on each side of the system drawer, C in Figure 1 , and lift the system drawer.
4. Insert the inner rails located on the system drawer B in Figure 1, into the rails mounted in the rack D.
   Attention: When matching the inner rails to the outer rails, ensure that both rail faceplates glide past each other. Do not, under any circumstances, force the rails. If the system drawer does not glide freely into the rack, completely remove the drawer from the outer rails. After the drawer is clear of the outer rails, reposition the system, then reinsert the inner rails. Repeat this process until the system drawer glides freely into the rack.
5. Simultaneously press the safety latches, located on each side of the system drawer E in Figure 2, and push the system unit into the rack.
   Figure 2. Press the safety latches and push the system unit into the rack.

   
6. Slide the system drawer in and out of the rack two or three times. This action aligns the system drawer to the rails. The system drawer should glide on the rails.
7. Push the system drawer back into the rack. Using a screwdriver or similar tool, tighten the rail-retaining screws that secure the slide rails to the rack's rear flange on each side of the rack.
8. Slide the system drawer about halfway out of the rack.
9. Using a screwdriver or similar tool, tighten the front rail-retaining screws that secure the slide rails to the rack's front flange on each side of the rack.
   Note: After the system rails are installed, do not extend them past their safety latches. The safety release latches stop the rails from overextending and separating. This action prevents the system drawer from being accidentally pulled out too far and dropped.
   Attention: If any binding is detected, loosen the rail-retaining screws (front and back), and repeat steps 5 through 9.
10. When transporting the rack, fasten the system drawer to the rack enclosure by inserting a thumbscrew (transport retaining screw) through the bezel and chassis bracket, and screwing it to the rack flange as shown F in Figure 3 .
    Figure 3. Transport retaining screw.