Juniper ACX5448-D Hardware Manual page 113

Before you remove a fan module from an ACX5400 router, ensure that you have taken the necessary
precautions to prevent electrostatic discharge (ESD) damage (see
Damage" on page 191).
Ensure that you have the following parts and tools available to remove a fan module from an ACX5400
router:
ESD grounding strap
Antistatic bag or an antistatic mat
Phillips (+) screwdriver, number 2
To remove a fan module from an ACX5400 router (see
1. Place the antistatic bag or the antistatic mat on a flat, stable surface.
2. Wrap and fasten one end of the ESD grounding strap around your bare wrist, and connect the other
end of the strap to the ESD point on the chassis.
3. Using a Phillips screwdriver, loosen the locking screw (3 or 4 turns).
4. Grasp the handle on the fan module and pull firmly to slide the fan module halfway out of the chassis.
WARNING:
as you slide the fan module out of the chassis—the fan might still be running.
5. When the fan stops spinning, slide the fan module completely out of the chassis.
6. Place the fan module in the antistatic bag or on the antistatic mat placed on a flat, stable surface.
Figure 71: Remove a Fan Module from an ACX5400 Router
Figure 71 on page
To avoid injury, do not touch the fan with your hands or any tools
"Prevention of Electrostatic Discharge
116):
116