NEC MH4500 - Manual (Page 41)

Setting Up Your System 2-21
4. Carefully slide the center bar (6) towards the back of the rack until the
oblong hole in the bar is over the third hole from the front of the large outer
bar (4).
T Insert an 8-32 screw through the oblong hole in the center bar, the hole
in the large outer bar, and into the oblong slot in the front extension
bracket.
T Place a flat washer, lock washer, and a 8-32 nut on the screw and
loosely tighten.
5. Secure the back end of the large outer bar (4) to the back extension
bracket (1).
T The end of the outer bar has four holes. The extension bracket has two
holes and two elongated slots for fastening the bar.
T Align two holes in the outer bar with a hole and slot in the bracket.
Which holes/slots you use depends on the depth of the rack.
T Insert an 8-32 screw through each of the two holes in the outer bar and
through the hole and slot in the extension bracket.
T Place a flat washer, lock washer, and a 8-32 nut on each screw and
loosely tighten.
6. Check that the bars and brackets are positioned correctly in the rack.
7. Tighten all the screws holding the bars to the extension brackets and rack.
Installing the Rack Unit in the Rack
Note: If you have a rack unit, you must use the
following procedure to install the unit in the rack. Observe all
safety precautions, warnings, and cautions noted throughout
the procedures.
Install your converted unit (or rack unit) in the rack as follows.