Vertical comdial DX-120, Installation And Maintenance Manual

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I
NSTALLING THE
DX-120
DX-120 Installation and Maintenance Manual
- 42 -
Site Planning
The first step in site planning is establishing suitable environmental conditions for the system.
A) Place KSU1, and KSU2 if applicable, within 5 feet (1.5 meters) of an isolated, dedicated, 105-125VAC,
57-63Hz, 15A, single-phase commercial power source.
CAUTION
• This must be an isolated, dedicated AC circuit for proper operation.
• Run all three wires (power, neutral, and ground) separately from the
outlet to the breaker panel, without being bonded to any other wire or
circuit.
• Do not plug any other equipment into this outlet.
• To maintain the protection provided by the isolated, dedicated circuit, the
length of the AC power cord limits the distance between the KSU and the
outlet.
• To protect the system from lightning damage or other AC power line
disturbances, install a surge protector.
• Do not use an extension cord.
• Select the KSU location to minimize cable run length. Terminal
equipment connected to the system must not exceed specified limits (see
see “Specifications” ).
• The KSU location should not be exposed to direct sunlight, high
humidity, heat, dust, or strong magnetic fields (such as those generated
by heavy motors, copy machines and some kitchen appliances).
• The DX-120 system must be installed in a climate controlled environment.
This equipment cannot function in environments above 95 degrees
Fahrenheit ambient temperature.
B) The MDF should consist of a 3/4-inch plywood backboard large enough to mount all hardware and
equipment allowing all components ample space for adequate ventilation and servicing. Allow additional
room for external apparatus, if used.
C) For cooling purposes, ample air space (at least four inches on the top, bottom, left and right sides) must be
provided for the KSU.
D) SMDR/SMDA output devices must be placed within 50 feet (15 meters) of the KSU (limited by RS-232C
standard wiring practices).
E) The equipment should be located in a climate-controlled room adhering to the environmental specifications
listed in see “Environmental Data” .
CAUTION
• When installing the KSU and station instruments, allow a sufficient
margin for error in case of air conditioning failure, routine maintenance,
plant shutdown, etc.
• As a general rule, if conditions are suitable for office personnel, they are
also suitable for KSU and terminal equipment operation.
• A properly controlled environment will help to extend the operating life of
the equipment.
Site Planning (continued on next page)