Prepare For Rack Top-Frame Installation For The Reduced-Height Option - IBM pseries 655 Installation Manual

Prepare for Rack Top-Frame Installation for the Reduced-Height Option

To prepare the rack top frame for the reduced-height option, do the following:
1. Unpack the frame.
2. Unpack the rack top frame.
3. Use the jack screws to stabilize and lift the rack off the floor.
a. Loosen the jam nut on each leveling foot by turning the nut counterclockwise.
b. Rotate each leveling foot downward until it contacts the surface on which the rack is placed.
c. Adjust the leveling feet downward as needed until the rack is level. When the rack is level, tighten
the jam nuts against the base by turning the nut clockwise.
4. Remove the front and rear BPRs, BPDs, BPCs, fan assemblies and BPJs.
Attention: Make note of the location identification of the BPRs and BPEs for later reinstallation. if
these components are not reinstalled in their original location, the processor subsystem will not power
on.
To identify unit locations, refer to the illustration on page 176.
a. To remove the BPRs, do the following:
1) Make sure the ON/OFF switch is in the UNLOCK/OFF position.
2) Loosen the thumbscrew on each side of the BPR using the torque tool (part number 6422789).
3) Rotate the release levers up on each side of the BPR. This will unseat the BPR.
4) Pull the BPR straight out from the Bulk Power Enclosure (BPE).
5) Repeat for the other BPRs. There can be up to six BPRs, with three in front and three in back.
b. To remove the Bulk Power Controllers (BPCs), do the following:
1) Loosen the thumbscrew on each side of the BPC, using the torque tool (part number 6422789).
2) Pull the BPC straight out from the Bulk Power Enclosure.
3) Repeat for the other BPC. There are two BPCs, with one in front and one in back.
c. To remove the BPDs, do the following:
1) Loosen the thumbscrew on each side of the BPD, using the torque tool (part number 6422789).
2) Pull the BPD straight out from the Bulk Power Enclosure (BPE).
3) Repeat for the other BPDs. There can be up to four BPDs, with two in front and two in back.
d. To remove the BPF, do the following:
Note: A grille covers the fan on the front of the fan assembly.
1) Locate the BPF to be replaced.
2) Remove the fan cover plate.
3) Loosen the upper and lower fasteners using the torque tool (part number 6422789).
4) Pull the BPF straight out of the BPE.
5) Repeat for the other BPF. There are two BPFs, one in front and one in back.
5. To reduce the weight to the maximum two-person limit, do the following:
180 Eserver pSeries 655 Installation Guide