6TANTP501-1E
TOTAL ACCESS 3000/3010
NTP-501
Page 5 of 22
Total Access
®
3000/3010 System Manual
© 2002, ADTRAN, Inc.
1.3.4 Install Fans
The fan assembly is designed to mount on the rear of the heat baffle. Together they
provide forced air ventilation for the Total Access 3000/3010 shelf. The heat-baffled
fan assembly is designed to cool only one chassis at a time.
The fan is designed to mount directly above a Total Access 3000/3010 shelf. Since the
unit is an integral component of the Total Access 3000/3010 System, the assembly
allows provisions to facilitate fiber optic cable routing in the front tray.
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 or both inputs active. In the event of a fan failure, the unit provides for an
alarm indication by closing a relay contact. The unit is designed to tolerate one fan
failure and still provide adequate cooling.
Six flat head screws are provided with the fan assembly. Use the screws and a #1
Phillips screwdriver to attach the fan assembly to the back of the heat baffle and fiber
tray. Cable ties are provided for strain relief and wiring management of incoming
power, return, frame ground, and alarming to the System Controller Unit. Cable tie
holders are built into the fan assembly to accept the cable ties provided.
For the install to be UL 1950 certified, ADTRAN requires that the following
installation guidelines be followed:
• The fan assembly is intended for installation in Restricted Access Locations Only.
• The fan assembly shall be installed in accordance with the requirements of NEC
NFPA 70.
Remove the protective cover from the terminal block by squeezing the black plastic
clips on each end of the terminal block and pulling the cover off. Make the proper
power, return, frame ground, and alarm connections to the terminal block. Route the
wires using the wire ties provided, ensuring that the wires do not interfere with the
operation of the fans. Replace the protective terminal block cover to avoid inadvertent
electrical shock.
To be UL 1950 certified, ADTRAN requires that the following connection guidelines
be followed:
• The fan assembly must be connected to a reliably grounded -48 VDC source which
is electrically isolated from the AC source.
• The frame ground stud located on the fan plate must be connected to a reliable
frame ground source.
• A readily accessible disconnect device that is suitably approved and rated must be
incorporated into the fixed wiring (e.g. Fuse and Alarm Panel).
• The branch circuit overcurrent protection shall be a fuse or circuit breaker rated
-48 VDC 1A.
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