Removing And Installing A Fan; Removing And Installing A Power Supply Module - Juniper C Series Hardware Manual

Removing and Installing a Fan

Both C Series models have two cooling fans that provide forced air cooling for
components in the system. Each fan is hot-swappable; you can replace it without
powering down the system. You can monitor fan status by observing the TEMP LED.
NOTE: If the red TEMP LED is illuminated, either a critical or noncritical failure exists.
CAUTION: If the TEMP LED is illuminated and none of the fans is spinning, quickly
power down the system until a new set of fans is available. Operating a system with
inadequate air circulation can damage the components.
To remove a fan:
1.
2.
WARNING: Do not place your fingers near the fans when removing the unit. The
blades might still be moving.
CAUTION: Do not use the fan tray handle to carry the fan. Use the handle only to
push the tray into the chassis or pull it out.
To install a fan, reverse the steps taken to remove the fan.

Removing and Installing a Power Supply Module

NOTE: If your system is powered on, see the SRC PE CLI User Guide, Chapter 5, Using
the SRC CLI Operational Commands to Monitor the SRC Software for commands to run
before performing these steps.
To remove a power supply module:
Unlock or loosen the fan from the system.
For the C2000 model, press the locking tab and rotate the fan away from
the system.
For the C4000 model, loosen the thumb screw in the top-left and lower-right
of the fan.
Pull the fan out and remove it from the system.
Use two hands to hold the fan after it comes out of the chassis.
Chapter 6: Maintaining the System
Removing and Installing a Fan
35