Fan Tray Upgrade Overview - Juniper MX240 - UPGRADING Manual

Upgrading MX240, MX480, and MX960 3D Universal Edge Router Power Supplies and Fan Trays

Fan Tray Upgrade Overview

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The MX Series high-capacity fan trays satisfy cooling requirements for high-density DPCs
and MPCs, and must be upgraded for proper cooling (see Figure 1 on page 4, Figure 2
on page 4, and Figure 3 on page 5). Additionally, for the MX960 router, you must
upgrade both fan trays and the filter tray.
NOTE: Before upgrading, the MX Series router must be running Junos OS
Release 10.0 R1 or later to support high-capacity fan trays.
NOTE: To prevent overheating, install the replacement fan tray immediately
after removing the existing fan tray.
Figure 1: MX960 High-Capacity Fan Tray
Figure 2: MX480 High-Capacity Fan Tray
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