Juniper PTX1000 Hardware Manual page 100

NOTE: The fan module provides airflow out, which is also known as port-to-FRU airflow.
Before you install a fan module in a PTX1000, ensure that you have taken the necessary precautions to
prevent electrostatic discharge (ESD) damage (see
page 161).
Ensure that you have the following parts and tools available:
ESD grounding strap
#1 Phillips (+) screwdriver, number 1
To install a fan module in a PTX1000 (see
1. To prevent damage to the equipment caused by static discharge, attach an electrostatic discharge (ESD)
grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
2. Taking care not to touch the connectors, remove the fan module from its bag.
3. Align the module with the open slot on the FRU end of the PTX1000 and slide it in until it is fully seated.
4. Using the Phillips screwdriver, tighten the locking screw (3 or 4 turns).
Figure 39: Installing a Fan Module in a PTX1000
"Prevention of Electrostatic Discharge Damage" on
Figure 39 on page 100):
100