Positioning and leveling the rack
Proper rack positioning and leveling is needed to comply with safety and regulatory requirements. Use the
procedure in this section to perform this task.
About this task
Note: With the 7965-S42 Ruggedized Rack Kit feature ECRR installed, the rack supports a maximum of
20.4 kg (45 lbs) per EIA unit. You must install the heavier drawers at the bottom of the rack in a zone 4
earthquake environment.
Use the following information to determine the next step:
• To bolt the rack to a concrete floor, see “Attaching the rack to a concrete floor” on page 100
.
• To bolt the rack to a concrete floor beneath a raised floor, see “Attaching the rack to a concrete floor
beneath a raised floor” on page 106.
• If you must level the rack, continue with the next step.
To position and level the rack, perform the following steps:
1. Remove all the packing materials from the rack, i.e. tape, plastic sheet, cardboard, etc.
2. Position the rack. If you are connecting multiple racks for a 24-inch pitch, continue with “Connecting
multiple racks with rack-to-rack attachment kit for a 24-inch pitch” on page 112. If you are connecting
multiple racks for a 600 mm pitch, continue with “Connecting multiple racks with the rack-to-rack
attachment kit for a 600 mm pitch” on page 114.
3. Loosen the jam nut on each leveling foot.
4. Rotate each leveling foot downward until it contacts the surface on which the rack is placed.
5. Adjust the leveling feet downward as needed until the rack is level. When the rack is level, tighten the
jam nuts against the base.
6. If you are not connecting multiple racks, see “Attaching the stabilizer brackets” on page 116.
Attaching the rack to a concrete floor
Learn about how to attach the rack to a concrete floor.
About this task
Obtain the services of a Professional Engineer and/or mechanical contractor to attach the rack to the
concrete floor. The Professional Engineer and/or mechanical contractor must determine that the
hardware being used to secure the rack to the concrete floor is sufcient to meet the requirements for the
installation. IBM provides rack-mounting plates that may be used for installation of the rack to the
concrete floor. If the IBM rack-mounting plates are used the following is a suggested installation
procedure.
To attach the rack to a concrete floor, complete the following steps:
Procedure
1. Put the rack in its predetermined location.
2. If they are installed, remove the front and rear doors. If they are not installed, continue with the next
step. To remove a rack door, complete the following steps:
a. Unlock and open the door.
b. Grasp the door rmly with both hands and lift it up and away from the hinges.
3. Locate the hardware mounting kit and the two mounting plates. Refer to the following gure when
reviewing the contents of the hardware mounting kit. The hardware mounting kit contains the
following items:
• 4 Rack-mounting bolts
• 4 Thick washers [12.7 mm (½”)]
100
Power Systems: Racks and rack features
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