Attaching The Rack To A Short-Raised Or Long-Raised Floor - IBM pseries 690 Installation Manual
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- Service manual (1134 pages) ,
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Attention:
It is the service representative's responsibility to complete the following steps.
1. Reposition the system rack over the mounting plates.
2. Place the four rack-mounting bolts through the plate assemblies, with the D-washer positioned so that
the straight side of the washer is facing inward toward the system rack.
3. Place the isolator bushing (item 4 in illustration on page 120) inside the leveling foot, with a washer
between the isolator bushing and the floor plate.
4. Turn the rack-mounting bolts three or four rotations into the tapped holes.
5. Turn the leveling foot of the plate assembly down until it contacts the mounting plate, and then level
the rack using the four leveling feet.
6. Lock the leveling feet by tightening the lock nut.
7. Tighten the four rack-mounting bolts into the mounting plates.
Attaching the Rack to a Short-Raised or Long-Raised Floor
Attention:
It is the customer's responsibility to ensure the following steps are completed before the
service representative performs the tie-down procedure.
Note: To accommodate a floor with a depth of more than 16 inches, a steel beam or a steel channel
adapter for mounting the subfloor eyebolts is required. The customer must supply the floor eyebolts.
Consider the following when preparing the floor for tie-down:
v The hardware is designed to support a frame weighing no more than 2636 pounds.
v The estimated maximum concentrated load on one caster for a 2636-pound system is 900 pounds. For
a multiple system installation, it is possible that one floor tile will bear a total concentrated load of 1800
pounds.
To install the eyebolts, do the following:
1. Obtain the service of a qualified structural engineer to determine the appropriate installation of the
eyebolts.
2. Consider the following before installing the eyebolts:
v Floor eyebolts must be securely anchored to the concrete floor.
v The minimum height of the center of the internal diameter is 1 inch above the concrete floor surface.
v The maximum height is 2.5 inches above the concrete floor surface. Higher than 2.5 inches can
cause excessive lateral deflection to the tie-down hardware.
v The eyebolt's internal diameter should be 1-3/16 inch, and each eyebolt should be able to withstand
2700 pounds. The customer should obtain the service of a qualified consultant or structural engineer
to determine the appropriate anchoring method for these eyebolts and to ensure that the raised floor
can support the floor-loading specifications provided in the Site and Hardware Planning Information,
order number SA38-0508.
122
Eserver pSeries 690 Installation Guide
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