IBM SAN256B-6, Installation, Service And User Manual

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System AirFlow: Non-portside Exhaust
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Unit: 2
System AirFlow: Non-portside Exhaust
Note: Ensure that captive screws securing the fan and power supply assemblies are tightened. If they are
not, air pressure inside chassis may unseat these FRUs from chassis connectors.
Fan assembly numbering
The following figure illustrates the location and number identification of fan assemblies in the chassis.
1 - Fan assembly 1
2 - Fan assembly 2
Precautions specific to fan assemblies
Observe the following precautions when replacing fan assemblies.
Note:
Each fan assembly contains two fans for a total of four fans for two installed fan assemblies. The
device requires 3 fans out of 4 functioning fans for operation. If hot-swapping a fan assembly, be sure to
have the replacement fan assembly ready to install before removing a faulty fan assembly and replace as
soon as possible.
Note: If a fan assembly has failed, do not remove it from chassis unless a FRU is available for
replacement. If the slot is left empty for an extended time period, this could cause chassis air-leakage and
overheating.
Figure 72. Fan assembly numbering
Fan Assemblies
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