Optera Metro 3500 Cooling Unit Assembly And Cooling Unit Fan Modules - Nortel NTRN10AN Planning Manual

3-40 Hardware feature descriptions
OPTera Metro 3500 cooling unit assembly and cooling unit fan
modules
(NTN458QA)
The cooling unit assembly (NTN458QA) contains three cooling unit fan
modules (NTN458HC) and environmental sensors. See
cooling unit assembly forces air through the shelf when environmental
conditions require a decrease in the shelf temperature.
See
Figure 3-23
OPTera Metro 3500 Cooling unit assembly (NTN458QA)
Retaining
screws
OPTera Metro 3500 Multiservice Platform
Table 3-3 on page 3-6
Note 1: The Universal shelf cooling unit assembly (NTN458QH) is only
supported on the OPTera Metro 3500 Universal Shelf Assembly
(NTN476AH).
Note 2: The Cooling unit assembly (NTN458QA) is only supported on the
OPTera Metro 3500 Shelf Assembly (NTN476DA and NTN476AA).
Note 3: The Fan kit (NTN458GA) is only supported on the OPTera Metro
3500 Shelf Assembly (NTN476AA).
Front view
NTRN10AN
for operational temperature ranges.
Cooling unit fan modules
Attaching screw (2)
Rel 12.1 Standard Iss 1 Apr 2004
Figure 3-23. The
EX0994p
Plenum
Plastic
baffle