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Installing a C7 Expansion Shelf
The cabinet's modular design allows for incremental expansion of system capacity, including
C7 shelf expansion. You can install a C7 expansion shelf into any cabinet equipped with
fewer than the maximum number of shelves.
Follow these guidelines when installing C7 expansion shelves:
Install C7 shelves on the
front equipment rack, below
the cabinet DC power
systems. The expansion shelf
locations are identified at
right.
Power shelf 1 serves C7
shelves 1 and 2; power shelf 2
serves C7 shelves 3 and 4.
A minimum of (2) rectifier
modules are required in the
power shelf to support two
C7 shelves. Depending on the
configuration, additional
rectifier modules may be
required. See
Rectifier Module
Usage Guidelines
for details.
ODC-3000
For supported operation, the C7 expansion shelf must be equipped with a fan tray. Install the
fan tray (included in the kit) before turning up the shelf. See
Installing a C7 Fan Tray
(on page
) for instructions.
To provide sufficient cooling for an expansion C7 shelf, the rear cabinet door must be
equipped with an integrated heat exchanger. If necessary, replace the rear door with a heat-
exchanger door before turning up the expansion shelf. See Installing a Heat Exchanger Door
for instructions.
If an expansion C7 shelf will provide DS0 or DS1 services over copper lines, typically you
must expand the cabinet's copper line protection capacity. If applicable, the expansion kit
includes the protection components for expansion (mounting frames and protection blocks).
See Installing a Protection Mounting Frame and Installing a Protection Block for installation
instructions.
Installing an expansion shelf does not affect services on the existing equipment.
WARNING!
Electrical hazard. Only a qualified technician should perform
this task.
