Juniper QFX5240 - Maintain the QFX5240 Cooling System; Remove a Fan Module from QFX5240 Switches

Maintain the QFX5240 Cooling System
IN THIS SECTION
Remove a Fan Module from QFX5240 Switches | 90
Install a Fan Module in QFX5240 Switches | 92
The fan modules in a QFX5240 switch are hot-removable and hot-insertable eld-replaceable units
(FRUs). You can remove and replace one of them without powering o the switch or disrupng
switching funcon.
Remove a Fan Module from QFX5240 Switches
CAUTION: To ensure proper airow, keep a failed fan module in place unl you have a
replacement fan module at hand. Do not run the device with an open fan tray slot for
an extended amount of me.
Make sure you calculate the me required to replace the fan module in the chassis.See Table 26 on page
90.
Table 26: Time Allowed to Replace a Fan Module
Ambient Temperature (°C) Duraon
25 2 minutes
35 to 40 30 seconds
Before you remove a fan module from a QFX5240 switch, ensure that you have taken the necessary
precauons to prevent electrostac discharge (ESD) damage.
Ensure that you have the following parts and tools available to remove a fan module from a QFX5240
switch:
90