Maintaining Components; Maintaining The M7I Cooling System - Juniper M7i Hardware Manual

CHAPTER 28

Maintaining Components

Maintaining the M7i Cooling System

Purpose
Action
Related
Documentation
Copyright © 2019, Juniper Networks, Inc.
Maintaining the M7i Cooling System on page 191
Maintaining the M7i Routing Engine on page 192
Maintaining the M7i FIC and FIC Cables and PICs and PIC Cables on page 192
Maintaining the M7i Power Supplies on page 194
Maintaining the M7i CFEB and CFEB-E on page 195
For optimum cooling, verify the condition of the fans.
The router has a single fan tray that installs into the back of the chassis, as shown in
Figure 6 on page 12.
To check the status of the fans in the fan tray, issue the
command. The output includes an entry for each fan in the fan tray:
user@host> show chassis environment
Class Item
Power Power Supply 0
Power Supply 1
Temp Intake
PICs
Power Supplies
CFEB Intake
CFEB Exhaust
Routing Engine
Fans Left Fan Tray
Left Tray front fan
Left Tray second fan
Left Tray third fan
Left Tray fourth fan
For further description of the output from the command, see the
M7i Cooling System Overview on page 15
Replacing the M7i Fan Tray on page 137
show chassis environment
Status Measurement
OK
OK
OK 24 degrees C / 75 degrees F
OK 27 degrees C / 80 degrees F
OK 27 degrees C / 80 degrees F
OK 27 degrees C / 80 degrees F
OK 33 degrees C / 91 degrees F
OK 26 degrees C / 78 degrees F
Present
OK Spinning at normal speed
OK Spinning at normal speed
OK Spinning at normal speed
OK Spinning at normal speed
CLI Explorer .
191