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Cisco ASR 903 Router Hardware Installation Guide
OL-25178-04
Chapter 2 Preparing for Installation
Site Planning
Site Planning
The following sections describe how to plan for the installation of the Cisco ASR 903 Router:
• General Precautions, page 2-9
• Site Planning Checklist, page 2-9
• Site Selection Guidelines, page 2-10
• Air Flow Guidelines, page 2-11
• Floor Loading Considerations, page 2-12
• Site Power Guidelines, page 2-12
• Site Cabling Guidelines, page 2-13
• Rack-Mounting Guidelines, page 2-15
• Installation Checklist, page 2-18
• Creating a Site Log, page 2-19
General Precautions
Observe the following general precautions when using and working with your Cisco ASR 903 Router
system:
• Keep your system components away from radiators and heat sources and do not block cooling vents.
• Do not spill food or liquids on your system components and never operate the product in a wet
environment.
• Do not push any objects into the openings of your system components. Doing so can cause fire or
electric shock by shorting out interior components.
• Position system cables and power supply cables carefully. Route system cables and the power supply
cable and plug so that they cannot be stepped on or tripped over. Be sure that nothing else rests on
your system component cables or power cable.
• Do not modify power cables or plugs. Consult a licensed electrician or your power company for site
modifications. Always follow your local and national wiring rules.
• If you turn off your system, wait at least 30 seconds before turning it on again to avoid system
component damage.
Site Planning Checklist
Use the following checklist to perform and account for all the site planning tasks described in this
chapter:
• The site meets the environmental requirements.
• The site’s air conditioning system can compensate for the heat dissipation of the
Cisco ASR 903 Router.
• The floor space that the Cisco ASR 903 Router occupies can support the weight of the system.
• Electrical service to the site complies with the requirements.
• The electrical circuit servicing the Cisco ASR 903 Router complies with the requirements.