Air Ventilation Unit (Avu) - Nera WiLink-I Series System Manual

1.2.8

Air Ventilation Unit (AVU)

The 2U high AVU includes a 1U high integral chamber for inlet airflow and a 1U
high fan tray with an internal alarm module. To support high availability Base
Station, the fan tray includes 10 brush-less fans, where 9 fans are sufficient for
cooling a fully loaded chassis. A failure in any of the fans is indicated by both the
front panel LEDs and a trap that is sent to the management system. To further
support high availability, the chassis may operate with the hot-swappable fan tray
extracted from it for a period of time sufficient for replacing it (up 10 minutes).
WiLink-I Modular Base Station System Manual
Base Station Equipment
9