CAUTION: Replace a failed fan module with a new fan module within 1 minute of
removal to prevent chassis overheating. Before removing the fan module, ensure you
have a replacement fan module at hand.
Before you remove a fan module from a QFX5110, ensure that you have taken the necessary precautions
to prevent electrostatic discharge (ESD) damage (see “Prevention of Electrostatic Discharge Damage” on
page 242).
Ensure that you have the following parts and tools available to remove a fan module from a QFX5110:
•
ESD grounding strap
•
Antistatic bag or an antistatic mat
To remove a fan module from a QFX5110 (see Figure 137 on page 425):
1. Place the antistatic bag or the antistatic mat on a flat, stable surface.
2. Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD point on the
chassis.
3. Using a Phillips screwdriver, loosen the locking screw (three or four turns).
4. Grasp the handle on the fan module and squeeze the outside of the handle to release the module.
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.
5. Pull firmly to slide the fan module halfway out of the chassis.
6. When the fan stops spinning, slide the fan module completely out of the chassis.
7. Place the fan module in the antistatic bag or on the antistatic mat placed on a flat, stable surface.
424
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