1

Installing/Removing Fan Assemblies

The Cajun P880 contains two fan assemblies:

One large chassis fan tray containing ten fans to cool the logic section of the system.

One smaller rear fan tray containing four fans, mounted on the lower rear panel to cool the switch elements.

Both fan assemblies are hot-swappable and contain fan management circuitry to:

Provides power to the fans

Supplies reduced voltage to the fans, for reduced speed operation

Provides the Fan OK and present status signal to the CPU

Forces full fan speed operation, in the event of a fan failure

Accepts a control signal from the CPU, to force full fan speed in the event of an over-temperature condition.

1 - 18

Cajun P880 Routing Switch Installation Guide

Page 28
Image 28
Motorola P880 manual Installing/Removing Fan Assemblies