Cisco 4490 - Manual (Page 44)

Chapter 2 Preparing for Installation
Safety Guidelines
2-10
Cisco Global Site Selector 4490 Hardware Installation Guide
78-15755-02
Rack Installation Safety Guidelines
Before installing your GSS 4490 in a rack, review the following guidelines:
• Two or more people are required to install the device in a rack.
• Ensure that the room air temperature is below 95°F (35°C).
• Do not block any air vents; usually 6 inches (15.24 cm) of space provides
proper airflow.
• Plan the device installation starting from the bottom of the rack.
• Install the heaviest device in the bottom of the rack.
• Do not extend more than one device out of the rack at the same time.
• Connect the GSS 4490 to a properly grounded outlet.
• Do not overload the power outlet when installing multiple devices in the rack.
• Do not place any object weighing more than 110 lb (50 kg) on top of
rack-mounted devices.
Ensuring Proper Airflow
Observe the following general precautions to ensure proper airflow:
• Install the system in an open rack whenever possible. If installation in an
enclosed rack is unavoidable, ensure that the rack has adequate ventilation.
• Maintain ambient airflow to ensure normal operation. If the airflow is
blocked or restricted, or if the intake air is too warm, an overtemperature
condition can occur.
• Allow at least 6 inches (15.24 cm) of clearance around the ventilation
openings of the chassis.
• Avoid placing the system in an overly congested rack or directly next to
another equipment rack. Heat exhaust from other equipment can enter the
inlet air vents and cause an overtemperature condition.
• Equipment near the bottom of a rack might generate excessive heat that is
drawn upward and into the intake ports of the equipment above. The warm air
can cause an overtemperature condition in the equipment above.