Replacing A Fan Tray; Removing A Fan Tray - Cisco Nexus 9504 Hardware Installation Manual

Replacing or Installing Modules, Fan Trays, and Power Supplies

Replacing a Fan Tray

You can remove a fan tray to either replace it with another fan tray or to replace a fabric module that is located
behind it.
The switch uses three fan trays. It can operate with two fan trays while you replace one or remove one to
replace one of the fabric modules behind the fan tray. When you remove one fan tray, the other fan trays speed
up their fans to maintain the designed airflow.
Note
Note
Warning

Removing a Fan Tray

Remove only one fan tray at a time during switch operations. The switch shuts down within two minutes.
Before you begin
• Wear an electrostatic discharge (ESD) wrist strap or other ESD protective device while handling modules.
• Prepare an antistatic surface or packing materials for each module that you remove from the chassis.
Step 1
Open the packaging for the new fan tray and inspect it for damage.
If the module is damaged, contact the Technical Assistance Center (TAC) and wait until you have an undamaged fan
tray to install.
Step 2 Unscrew the two captive screws on the front of the fan tray until each screw is free of the chassis. See the following
figure.
If you cannot replace a fan tray within three minutes, we recommend that you leave it in the chassis
until you are ready to replace it.
If you remove more than one fan tray at a time during operations, the switch allows up to two minutes
of operations before shutting down. If the switch senses an overtemperature condition when multiple
fan trays are removed, the shutdown can occur in less than two minutes.
Statement 1034 Backplane Voltage
Hazardous voltage or energy is present on the backplane when the system is operating. Use caution
when servicing.
Cisco Nexus 9504 NX-OS Mode Switch Hardware Installation Guide

Replacing a Fan Tray

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