Removing And Installing Fan Modules; Removing A Fan Module On The Cisco Mds 9140 Switch, The Cisco Mds 9120 Switch, And The Cisco Mds 9134 Switch - Cisco AJ732A - MDS 9134 Fabric Switch Installation Manual

Removing and Installing Components
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m

Removing and Installing Fan Modules

This section provides instructions for removing and installing the fan modules for the Cisco MDS 9140
Switch and the Cisco MDS 9120 Switch. The Cisco MDS 9124 Switch does not have field-replaceable
fan modules.
Removing a Fan Module on the Cisco MDS 9140 Switch, the Cisco MDS 9120 Switch, and the Cisco
MDS 9134 Switch
The fan module is designed to be removed and replaced while the system is operating without presenting
an electrical hazard or damaging the system.
The Cisco MDS 9000 Family has internal temperature sensors that are capable of shutting down the
Caution
system if the temperature at different points within the chassis exceed certain safety thresholds. To be
effective, the temperature sensors require the presence of airflow; therefore, in the event a fan module is
removed from the chassis, the Cisco MDS 9000 Family will be shut down after five minutes to prevent
potentially undetectable overheating. However, the switches will shut down sooner if the higher-level
temperature threshold is exceeded.
When removing the fan tray, keep your hands and fingers away from the spinning fan blades. Let the
Warning
fan blades completely stop before you remove the fan tray. Statement 258
To remove the existing fan module, follow these steps:
Locate the fan module in the back of the switch.
Step 1
Step 2 Slide the seating tabs toward the center of the fan module.
Step 3 Grasp the fan module handle and pull it outward.
Pull the fan module out of the switch and put it in a safe place.
Step 4
Cisco MDS 9100 Series Hardware Installation Guide
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Chapter 2 Installing the Cisco MDS 9100 Series
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