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007-5806-004
7: Maintenance Procedures
Removing and Replacing Rear Fans (Blowers)
The blade enclosure cooling fan assembly (blower enclosure) is positioned back-to-back with the
blade enclosure pair. You will need to access the rack from the back to remove and replace a fan.
The enclosure’s system controller issues a warning message when a fan is not running properly.
This means the fan RPM level is not within tolerance. When a cooling fan fails, the following
things happen:
1. The system console will show a warning indicating the rack and enclosure position
001c01 L2> Fan (
number
) warning limit reached @ 0 RPM
2. A line will be added to the L1 system controller’s log file indicating the fan warning.
The chassis management controller (CMC) monitors the temperature within each enclosure. If the
temperature increases due to a failed fan, the remaining fans will run at a higher RPM to
compensate for the missing fan. The system will continue running until a scheduled maintenance
occurs.
The fan numbers for the enclosure (as viewed from the rear) are shown in Figure 7-3 on page 99.
Note that under most circumstances a fan can be replaced while the system is operating. You will
need a #1 Phillips-head screw driver to complete the procedure.
Summary of Contents for ICE X
Page 1: ...SGI ICE X System Hardware User Guide Document Number 007 5806 004 ...
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Page 27: ...Powering the System On and Off 007 5806 004 7 Figure 1 5 Three Phase PDU Examples ...
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Page 78: ...58 007 5806 004 4 Rack Information Figure 4 2 Front Lock on Tall 42U D Rack ...
Page 80: ...60 007 5806 004 4 Rack Information Figure 4 4 Air Cooled D Rack Rear Door and Lock Example ...
Page 84: ...64 007 5806 004 4 Rack Information Figure 4 6 SGI ICE X Multi Cell M Cell Rack Array Example ...
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