Shelf; Introduction; Passive Heat Baffle (Passively Cooled); Heat Baffle With Fan Assembly (Actively Cooled, Multiple Shelf) - ADTRAN MX2820 System Manual

Mount Shelf, Heat Baffle, and Fan

INTRODUCTION

This procedure provides step-by-step instructions for mounting shelves, heat baffles, and fans
for the MX2820 system. This procedure provides step-by-step instructions for the following
installations:
• Shelf with passive heat baffle
• Shelf with heat baffle and fan assembly
• Shelf with pusher fan assembly
Refer to
"Section 2"
and engineering specifications.

Shelf

The shelf comes with mounting brackets that allow it to be flush-mounted or mid-mounted in
the rack.

Passive Heat Baffle (Passively Cooled)

A Passively cooled system does not include fans. Heat baffles are installed to divert rising heat
away from shelves.

Heat Baffle with Fan Assembly (Actively Cooled, Multiple Shelf)

A combination heat baffle and fan assembly provide forced-air ventilation for the MX2820
shelf. The fan assembly is designed to mount on the rear of the heat baffle.
The fan assembly accommodates two power inputs, each input consisting of a –48 VDC feed
and a battery return feed. The power inputs are on 0.375 inch centers. A frame ground
terminal is also provided on the rear of the assembly. The unit operates with either one or
both inputs active. In the event of a fan failure, the unit provides for an alarm indication. The
AUX3 environmental alarm input on the System Controller Unit (SCU) must be set to act as a
fan alarm to indicate a fan failure.
61186003L1-1D
DLP-501
"Configuration Guidelines for the MX2820 System"
of this manual for ADTRAN Part Numbers, illustrations,
NOTE
in
7-13