IBM SAN256B-6, Installation, Service And User Manual

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16. At the marked location of the tapped rack-mounting bolt holes, drill four holes approximately 5 cm
(2 in.). This allows clearance for the ends of the four rack-mounting bolts. The ends of the
rack-mounting bolts protrude past the thickness of the mounting plate.
Note: You must use a minimum of two anchor bolts for each rack-mounting plate to attach it to the
concrete floor. Because some of the holes in the rack-mounting plates might align with the concrete
reinforcement rods that are below the surface of the concrete, some of the rack-mounting plate holes
might not be suitable.
17. For each rack-mounting plate, select at least two suitable holes. Select holes as close to the threaded
holes as possible. Be sure that the holes you select at the rear of the rack are accessible. Drill the
selected holes (two for each rack-mounting plate).
18. Position the front rack-mounting plate within the marked area.
19. Using anchor bolts, attach the front rack-mounting plate to the concrete floor.
Note: Do not use the four plastic isolator bushings.
20.
Position the rack over the front rack-mounting plate.
21. Position the rear rack-mounting plate within the marked area.
22. Using anchor bolts, attach the rear rack-mounting plate to the concrete floor.
23. Insert each of the rack-mounting bolts through a flat washer, a thick washer, and through a leveling
foot.
24. Align the four rack-mounting bolts with the four tapped holes in the two rack-mounting plates and
turn the bolts 3–4 rotations.
25. Tighten the locking screw on each caster.
26. Adjust the leveling screw downward, as needed, until the rack is level. See Figure 87. When the rack
is level, tighten the jam nuts against the base by turning the jam nut clockwise, toward the bottom of
the rack. Torque the four bolts to 54–67 nm (40–50 ft-lbs).
27. After you bolt down the rack, go to “Step 7. Attach the front door” on page 214.
Rear of Cabinet
Jam Nut
Leveling Screw
Front of Cabinet
SJ000655
Figure 87. Leveling the rack
Appendix A. SAN rack
211