Cisco AGS+, Установка и обслуживание оборудования

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General
Site
Requirements
Preventive
Site
Configuration Avoiding
Shutdowns
The
proper placement
of
the
chassis
and
the
layout
of
your equipment
rack or wiring
closet are
essential for
successful system operation
Equipment
placed
too close together and inadequately
ventilated
can cause
system
malfunctions
and shutdowns
In addition
chassis
front panels
made
inaccessible
by
poor
equipment placement can
make
system
maintenance
difficult
Read and
follow these precautions
when
planning
your
site layout
and equipment
locations this will
help avoid
future
equipment failures
and
reduce the likelihood of environmentally
caused
shutdowns
General Precautions
The
CSC-ENVM
card monitors the
interior
chassis environment
and
provides
warnings
for
high
temperature
maximum
and
minimum
voltages
and
reports
on
occurrences
Remember
that electrical
equipment
generates
heat and ambient
room
temperature
alone may
not be adequate
to
cool equipment
to acceptable
operating temperatures
Never
place
chassis
side
by side because the heated exhaust
air
from one
chassis
will
be drawn
into
the intake vent of the
next
Follow
ESD
prevention procedures
to
avoid
damage
to
equipment
Damage from
static discharge
can cause
immediate
or intermittent equipment
failure
Ensure
that
the chassis cover
and
card access panels are
in
place
and
secure
The
chassis
is
designed to direct
cooling
air
through
the
card
cage an open
access panel will
redirect
the
air
flow
Equipment
Racks
Install
the chassis only
in an enclosed
rack
that
has adequate ventilation or
an
exhaust fan use
an
open
rack
where
possible
ventilation
system that is too powerful in closed rack may also prevent
cooling
by
creating
negative
air
pressure
around
the chassis
and
redirecting the air away from
the chassis intake
vent
If
necessary
operate
the chassis with
the
rack door
open
or
in an open rack
The
correct use of
baffles
inside
the
enclosed rack
can assist in cooling the
chassis
Ensure
that
the rack
is
not overly congested In an enclosed rack
ideally separate the units
with
12
to
15 inches of
vertical
clearance
The
horizontal clearance
is
standard for
most
enclosed
racks avoid
obstructing this space Open
racks
are
recommended
but not required
Equipment near the
bottom
of the rack may
generate
excessive heat
that
is
drawn upward and
into
the intake ports of equipment above
leading to failures in
the chassis
at or near the top of
the
rack
If
the enclosed rack
you are using does
not
have
ventilation fan
one
should be
installed
Preparing for Installation 2-5