Maintaining The Fan Trays On The Srx5800 Services Gateway; Replacing An Srx5800 Services Gateway Fan Tray; Removing An Srx5800 Services Gateway Fan Tray - Juniper SRX5800 Hardware Manual

Maintaining the Fan Trays on the SRX5800 Services Gateway

Purpose
For optimum cooling, verify the condition of the fans.
Action
Monitor the status of the fans. A fan tray contains multiple fans that work in unison to cool the services
gateway components. If one fan fails, the host subsystem adjusts the speed of the remaining fans to
maintain proper cooling. A major alarm is triggered when a fan fails, and a minor alarm and major alarm
is triggered when a fan tray is removed.
To display the status of the cooling system, issue the show chassis environment command.
user@host> show chassis environment
NOTE: The fan numbers are stamped into the fan tray sheet metal next to each fan.

Replacing an SRX5800 Services Gateway Fan Tray

The fan trays are hot-insertable and hot-removable. To replace a fan tray, perform the following procedures
in sequence:

Removing an SRX5800 Services Gateway Fan Tray | 268

1.
Installing an SRX5800 Services Gateway Fan Tray | 271
2.
Removing an SRX5800 Services Gateway Fan Tray
NOTE: To prevent overheating, install the replacement fan tray immediately after removing the
existing fan tray. Do not operate the services gateway for more than two minutes without both
fan trays installed.
Before you begin to remove the fan tray:
Ensure you understand how to prevent electrostatic discharge (ESD) damage. See
Electrostatic Discharge Damage" on page
Ensure that you have the following available:
505.
"Prevention of
268