Installing a Fan Module
Before you begin
• You must have a new fan module on hand and ready to install within one minute of removing the original
fan module if the switch is operating.
• The new fan module must have the same airflow direction as the other fan and power supply modules
installed in the switch. All of these modules must have either red coloring (port-side intake airflow) or
blue coloring (port-side exhaust airflow).
• Remove any blank plate or existing fan module from the fan slot.
About this task
To install a new fan module, follow these steps:
Procedure
1. Holding the fan module by its handle, align the back of the fan module (the side with the electrical
connectors) to the open fan slot in the chassis.
2. Slide the fan module into the fan module bay until it clicks into place.
3. Verify that the Status LED turns on and becomes green. For more information on what the LEDs
indicate, see the LEDs section.
Removing a Fan Module
About this task
The fan module is designed to be removed and replaced while the system is operating without presenting
an electrical hazard or damaging the system.
CAUTION: The IBM c-type Series Switches have internal temperature sensors that can shut down
the system if the temperature within the chassis exceed certain safety thresholds. To accurately
monitor the system temperature, the temperature sensors require sufficient airflow through the
chassis. In the event that a fan module is removed from the chassis and the airflow is reduced, the
system will bypass the temperature sensor information and shut down after five minutes to
prevent undetected overheating. However, the switches will shut down sooner if the major
temperature threshold is exceeded.
Warning: While removing the fan module, keep your hands and fingers away from the spinning fan
blades. Let the fan blades completely stop before you remove the fan module. Statement 258
To remove an existing fan module, follow these steps:
Procedure
1. On the fan module that you are removing, press the two sides of the fan module handle next to where
it connects to the fan module and pull on the handles enough to unseat it from its connectors.
2. Holding the handle, pull the module out of the chassis.
CAUTION: Do not touch the electrical connectors on the back side of the module and prevent
anything else from coming into contact with and damaging the connectors.
Chapter 3. Installing the IBM SAN48C-6 Switch 29
