Maintain The Ex4100 Cooling System; Install A Fan Module In An Ex4100 Switch - Juniper EX4100 Hardware Manual

Maintain the EX4100 Cooling System

IN THIS SECTION

Install a Fan Module in an EX4100 Switch | 180

Remove a Fan Module from an EX4100 Switch | 182
Install a Fan Module in an EX4100 Switch
Before you install a fan module in the switch:
• Ensure that you understand how to prevent electrostatic discharge (ESD) damage. See
Electrostatic Discharge Damage
• Ensure that you have the following parts and tools available to install a fan module in the switch
chassis:
• ESD grounding strap
• Phillips (+) screwdriver, number 2
Each fan module is a hot-removable and hot-insertable field-replaceable unit (FRU) installed in the rear
panel of the switch. You can remove and replace the fan module without powering off the switch or
disrupting switch functions.
CAUTION: Avoid mixing:
• AC and DC power supplies in the same chassis.
• Fan modules with different directions for the airflow in the same chassis.
• Power supplies with different directions for the airflow in the same chassis.
• Power supplies and fan modules with different directions for the airflow in the same
chassis.
To install a fan module in an EX4100 switch:
.
180
Prevention of