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1. Ensure that you have the correct fan module. The direction of the airflow in the fan module must
match the direction of the airflow in the installed power supply.
2. Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD point on the
chassis.
3. Remove the fan module from its bag.
4. Hold the handle of the fan module with one hand, and support the weight of the module with the
other hand. Place the fan module in the fan module slot on the rear panel of the switch, and slide it in
until it is fully seated.
5. Hand tighten the captive screws on the faceplate of the fan module. If you are unable to hand
tighten the captive screws, use the screwdriver.
Figure 99: Install a Fan Module in an EX4100 Switch
NOTE: If you have a Juniper J-Care service contract, register any addition, change, or upgrade of
hardware components at
Failure to do so can result in significant delays if you need replacement parts. This note does not
apply if you replace existing components with the same type of component.
SEE ALSO
Cooling System and Airflow in an EX4100 and EX4100-F Switch | 53
https:/
/www.juniper.net/customers/support/tools/updateinstallbase/.
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