Fan Tray Description; Figure 25: Airflow Through The Chassis - Juniper TX MATRIX Hardware Manual

TX Matrix Hardware Guide

Fan Tray Description

48

Figure 25: Airflow Through the Chassis

To function properly, the entire cooling system requires an unobstructed airflow and
proper clearance around the site, as described in "TX Matrix Clearance Requirements for
Airflow and Hardware Maintenance" on page 63.
The cooling system consists of the following components:
Two front fan trays
Rear fan tray
Front air filter
Rear air filter
The TX Matrix router cooling system contains two front and one rear fan tray (see Figure
8 on page 20 and Figure 9 on page 21). The fan trays each contain multiple fans that
work in unison to cool the TX Matrix router components. The fan trays are hot-insertable
and hot-removable. Figure 25 on page 48 shows the airflow through the TX Matrix router.
The front fan trays each contain six fans and are interchangeable with each other. The
front fan trays cool the components installed in the front card cage (the TX-SIBs,
TX-CIPs, and midplane).
The rear fan tray contains eight fans and is not interchangeable with the front trays.
The rear fan tray cools the components installed in the rear card cage (the Routing
Engines and TX-CBs).
Each power supply has one fan that cools that power supply.
Air e xhaust
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