Replacing A T4000 Upper Front Fan Tray; Removing The T4000 Upper Front Fan Tray; Figure 103: Installing The T4000 Lower Front Fan Tray - Juniper T4000 Hardware Manual

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Replacing a T4000 Upper Front Fan Tray

Removing the T4000 Upper Front Fan Tray

Copyright © 2018, Juniper Networks, Inc.

Figure 103: Installing the T4000 Lower Front Fan Tray

T4000 Cooling System Description on page 25
Troubleshooting the T4000 Cooling System on page 351
T4000 Clearance Requirements for Airflow and Hardware Maintenance on page 91
Maintaining the T4000 Fan Trays on page 335
The upper front fan tray is located above the FPC card cage. Each front fan tray weighs
about 20.4 lb (9.3 kg). The fan trays are hot-insertable and hot-removable. The upper
and lower fan trays are interchangeable with each other.
NOTE: Ensure that at any given time only one front fan tray is replaced. Do
NOT replace both the front lower and upper fans simultaneously.
Removing the T4000 Upper Front Fan Tray on page 267
1.
Installing the T4000 Upper Front Fan Tray on page 269
2.
To remove an upper front fan tray (see
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
1.
the strap to one of the ESD points on the chassis.
Loosen the captive screws on the corners of the fan tray faceplate.
2.
Grasp the handles, and pull the fan tray halfway out of the chassis.
3.
Chapter 28: Replacing Cooling System Components
Figure 104 on page 268):
267