Cisco 7513 Series, Hardware Installation And Maintenance Manual

Page: 82 / 289

Site
Requirements
Preventive
Site
Configuration
Maintaining
Normal
Operation
Planning proper
location for the router and
the layout of your
equipment rack or wiring
closet are
essential
for
successful
system
operation
Equipment
placed
too close together or inadequately
ventilated can
cause
system overtemperature
conditions In
addition chassis panels
made
inaccessible by poor equipment
placement
can
make
system
maintenance
difficult
Following
are
precautions that can
help
avoid
problems
during
installation
and ongoing
operation
General
Precautions
Follow
these
general precautions
when
planning
your
equipment
locations
and
connections
Use
the
show
environment
command
regularly
to
check
the
internal
system
status
The
environmental
monitor
continuously
checks the
interior
chassis
environment
it
provides
warnings
for high temperature
and
maximum
and
minimum
voltages
and
creates reports on any
occurrences
If
warning messages
are displayed take
immediate
action
to identify
the cause
and
correct the problem
Maintain
at least six
inches of clearance
in front
of
and
behind the chassis
to
allow
cooling
air
to
flow
through
the
inlet
and
exhaust
ports Keep
the chassis free
from
obstructions
and away from
the exhaust
air
of other
equipment
Remember
that
electrical
equipment
generates
heat and
ambient room
temperature
alone
may
not be
adequate to
cool equipment
to
acceptable operating
temperatures
Do
not place the router
directly
on
the
floor
or
in
any
area
that
tends
to collect
dust
Follow
ESD
prevention procedures
to
avoid
damage
to
equipment Damage from
static
discharge
can cause
immediate
or intermittent
equipment failure
Ensure
that
the backplane
cover
interface
processors
and
any
blank
interface
processor
fillers
are in
place
and
secure
The
fans
direct
cooling air throughout
the chassis interior
loose panel
or
empty
interface
processor
slot
can
redirect
the
air
flow
away
from
active
components
Also
the backplane
cover
shields the high current present
on the
backplane
and
must be
in
place
to
maintain the
EMI
integrity
of the
system
Equipment-Rack
Ventilation
If
you
plan
to install
the router
in
an
equipment
rack you
can avoid
overtemperature
conditions
by
following
the guidelines
in the section
Equipment Racks
in this
chapter
in
addition
to
the
following precautions
There must be
at least six
inches of clearance
between
the front
and
rear of the chassis
Enclosed
racks
must have
adequate
ventilation
or an exhaust fan
use an
open
rack
whenever
possible
Equipment
near the
bottom
of rack
may
generate
excessive heat
that
is
drawn
upward
and
into
the
inlet
ports
of
equipment
above
leading to
overtemperature
conditions in devices
at
or near
the top of the rack
For
functional
description
of the environmental
monitor
and
the
status
levels
refer
to
the section
Environmental
Monitoring
and
Reporting
Functions
in the chapter Product
Overview
Preparing for Installation
2-17