Rack Configuration Guidelines; Electrical Safety Guidelines - Cisco IPS-4240-K9 - Intrusion Protection Sys 4240 Installation Manual

Site and Safety Guidelines

Rack Configuration Guidelines

Follow these guidelines to plan your equipment rack configuration:
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Electrical Safety Guidelines

Warning Before working on a chassis or working near power supplies, unplug the power cord on AC units.
Follow these guidelines when working on equipment powered by electricity:
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Installing Cisco Intrusion Prevention System Appliances and Modules 5.0
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Enclosed racks must have adequate ventilation. Make sure the rack is not overly congested because
each chassis generates heat. An enclosed rack should have louvered sides and a fan to provide
cooling air.
When mounting a chassis in an open rack, make sure the rack frame does not block the intake or
exhaust ports. If the chassis is installed on slides, check the position of the chassis when it is seated
all the way into the rack.
In an enclosed rack with a ventilation fan in the top, excessive heat generated by equipment near the
bottom of the rack can be drawn upward and into the intake ports of the equipment above it in the
rack. Make sure you provide adequate ventilation for equipment at the bottom of the rack.
Baffles can help to isolate exhaust air from intake air, which also helps to draw cooling air through
the chassis. The best placement of the baffles depends on the airflow patterns in the rack.
Experiment with different arrangements to position the baffles effectively.
Before beginning procedures that require access to the interior of the chassis, locate the emergency
power-off switch for the room in which you are working. Then, if an electrical accident occurs, you
can act quickly to turn off the power.
Do not work alone if potentially hazardous conditions exist anywhere in your work space.
Never assume that power is disconnected from a circuit; always check the circuit.
Look carefully for possible hazards in your work area, such as moist floors, ungrounded power
extension cables, frayed power cords, and missing safety grounds.
If an electrical accident occurs, proceed as follows:
– Use caution; do not become a victim yourself.
– Disconnect power from the system.
If possible, send another person to get medical aid. Otherwise, assess the condition of the victim
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and then call for help.
– Determine if the person needs rescue breathing or external cardiac compressions; then take
appropriate action.
Use the chassis within its marked electrical ratings and product usage instructions.
Install the sensor in compliance with local and national electrical codes as listed in
Compliance and Safety Information for the Cisco Intrusion Prevention System 4200 Series
Appliance Sensor.
The sensor models equipped with AC-input power supplies are shipped with a 3-wire electrical cord
with a grounding-type plug that fits only a grounding-type power outlet. This is a safety feature that
you should not circumvent. Equipment grounding should comply with local and national electrical
codes.
Chapter 1 Introducing the Sensor
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