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Removing and Replacing a Fan Module
Removing the Fan Module
1. Loosen the retainer screw.
2. Grasp the extractor handle and gently pull the fan module from the slot.
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The rear panel of the NE0152TO has three bays for hot‐swap fan modules. Three
active fan modules are required for redundancy.
With active fan modules in all fan bays, if one fan fails, the switch will send an error
message and continue operation. You can then replace the failed fan without
powering off the switch or disrupting switch functions. If a second fan fails, the
switch will send another error message, write a log message to flash memory, and
shut down to prevent overheating.
To remove a hot‐swap fan module, complete the following steps:
Retainer Screw
Attention: If the inlet air temperature is above 35°C (95°F) while the switch is in
operation, replace the fan module within five minutes to avoid overheating the
switch.
To return the component to customer service for replacement, see Appendix A,
"Getting Help and Technical Assistance" to help you gather all the required
information that is necessary to return a component. After you remove the
component, securely pack the component for shipping.
Chapter 4: Removing and Replacing Components
57
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