Motorola CAJUN P880 - Manual (Page 28)

1 - 18 Cajun P880 Routing Switch Installation Guide
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.