User guide

2 Installation
CommPlete Communications Server 7
Installation
• If the chassis is installed in a closed or multi-rack assembly, the operating temperature of the rack
environment may be greater than the ambient temperature. Be sure to install the chassis in an
environment that is compatible with the maximum rated ambient temperature. See technical
specifications.
• Install equipment in the rack so that forced air cooled in the equipment does not compromise safe
operation.
• When mounting the equipment in the rack make sure mechanical loading is even to avoid a hazardous
condition, such as loading heavy equipment in the rack unevenly.
• When connecting the equipment to the supply circuit, be sure to check equipment nameplate ratings to
avoid overloading ciruits which may cause damage to over-current protection devices and supply
wiring.
• Be sure to maintain reliable earthing for rack-mounted equipment. Pay particular attention to supply
connections.
• This equipment is to be installed only in Restricted Access Areas (dedicated equipment rooms,
equipment closets, etc.) in accordance with Articles 110-16, 110-17, and 110-18 of the National
Electrical Code, ANSI/NFPA 70.
• Connect the equipment to a 48V DC supply source that is electrically isolated from the AC source. The
48V DC source is to be reliably earthed.
• This equipment chassis shall be connected directly to the DC supply system grounding electrode
conductor or to a bonding jumper from a grounding terminal bar or bus to which the DC supply system
grounding electrode conductor is connected.
• This equipment shall be located in the same immediate area (such as adjacent cabinets) as any other
equipment that has a connection between the grounded conductor of the same DC supply circuit and
the grounding conductor, and also the point of grounding of the DC system. The DC system shall not
be grounded elsewhere.
• The DC supply source is to be located within the same premises as this equipment.
• There shall be no switching or disconnecting devices in the grounded circuit conductor between the DC
source and the point of connection of the grounding electrode conductor.
• All DC input wiring shall be routed away from any sharp edges and properly secured in place to prevent
chaffing and to provide strain relief. This may be achieved by tie-wrapping the wires to the rack frame,
or by equivalent means.