General Precautions
Observe the following general precautions when using and working with your router:
• 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 cable carefully. Route system cables, the power supply cable,
and plug so that they are not 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 damage to the
system components.
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 router.
• The floor space that the router occupies can support the weight of the system.
• Electrical service to the site complies with the requirements.
• The electrical circuit servicing the router complies with the requirements.
• Consideration has been given to the console port wiring and limitations of the cabling involved, according
to TIA/EIA-232F.
• The router Ethernet cabling distances are within the prescribed limitations.
• The equipment rack in which you plan to install the router complies with prescribed requirements.
• The following factors have been carefully considered when selecting the location of the rack: safety,
ease of maintenance, and proper airflow.
Site Selection Guidelines
The router requires specific environmental operating conditions. Temperature, humidity, altitude, and vibration
can affect the performance and reliability of the router. The following sections provide specific information
to help you plan for the proper operating environment.
The router is designed to meet the industry EMC, safety, and environmental standards described in the
Regulatory Compliance and Safety Information for the Cisco NCS 540 Series Router document.
Environmental Requirements
Environmental monitoring of the router protects the system and components from damage that is caused by
excessive voltage and temperature conditions. To ensure normal operation and avoid unnecessary maintenance,
plan and prepare your site configuration before installation. After installation, make sure that the site maintains
Cisco Network Convergence System 540 Passive Cooled Small Density Routers Hardware Installation Guide
11
Preparing for Installation
General Precautions
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