Juniper QFabric QFX3000-G Hardware Documentation page 641

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and replace a fan module without powering off the QFX3100 Director device or disrupting
QFX3100 Director device functions.
Before you begin removing a fan module from a QFX3100 Director device:
Ensure that you understand how to prevent electrostatic discharge (ESD) damage.
See "Prevention of Electrostatic Discharge Damage" on page
Ensure that you have the following parts and tools available:
ESD grounding strap
Antistatic bag or antistatic mat
A Phillips (+) screwdriver, number 2
Replacement fan module for the fan module slot
To remove a fan module from a QFX3100 Director device (see
Attach the ESD grounding strap to your bare wrist, and connect the strap to a site ESD
1.
point.
Place the antistatic bag or the antistatic mat on a flat, stable surface.
2.
Unscrew both captive screws counterclockwise using your fingers. If you are unable
3.
to easily unscrew the captive screws with your fingers, use the screwdriver.
WARNING: To avoid injury, do not touch the fan with your hands or any
tools as you slide the fan module out of the chassis—the fan might still
be running.
When the fan stops spinning, grasp the fan module tightly to avoid dropping it and
4.
remove the fan module from the fan module slot.
Place the fan module in the antistatic bag or on the antistatic mat.
5.
Chapter 40: Replacing QFX3100 Components
360.
Figure 234 on page 592):
591