•
Ensure that the ventilation in the wiring closet is adequate to maintain a temperature below 40°C
(104°F).
•
Install a reliable air conditioning and ventilation system.
•
Keep the ventilation in the wiring closet running during non-business hours; otherwise, the
equipment can overheat.
•
Maintain a storage temperature between -40°C (-40°F) and 70°C (158°F).
Table 53 on page 123 summarizes the behavior of ExtremeSwitching switches when they experience
high operating temperatures.
Table 54 on page 123 lists the ambient temperature range for ExtremeSwitching switches. As with all
electrical equipment, however, Extreme Networks product lifetimes degrade with increased
temperature. Ideally, therefore, temperatures should be kept at or below 25°C (77°F).
Safeguards are built into all Extreme Networks switches and power supply units to minimize the risk of
fire.
Table 53: Thermal Shutdown and Restart Behavior
Switch Model(s) Behavior
All models except
those listed below
When internal system temperatures exceed the thermal shutdown temperature limit
(typically about 20°C higher than normal system operating temperatures), the system’s
power supplies are turned o and the switch shuts down. The system remains in the OFF
state until the system has sucient time to cool and the internal thermal sensor measures
a temperature lower than the maximum specified ambient temperature, at which time the
system restarts automatically.
Alternately, you can restart the system immediately by removing and then restoring all line
power to the system.
X460-G2
(all models)
When internal system temperatures exceed the thermal shutdown temperature limit
(typically about 20°C higher than normal system operating temperatures), the system’s
power supplies are turned o and the switch shuts down. The switch does not restart
automatically, even after cooling. It remains in the OFF state until you remove and then
restore all line power to the system.
Table 54: Ambient Temperature Range for Switches
Switch Series Ambient Operating Temperature Range
X440-G2 0°C (32°F) to 50°C (122°F)
Note: The maximum temperature is 60°C (140°F) for the following models: X440-
G2-12t8fx-GE4, X440-G2-24fx-GE4, X440-G2-24t-GE4.
X450-G2 0°C (32°F) to 50°C (122°F)
X460-G2 0°C (32°F) to 50°C (122°F)
X590 0°C (32°F) to 45°C (113°F)
X620 0°C (32°F) to 50°C (122°F)
X670-G2 0°C (32°F) to 45°C (113°F)
X690 0°C (32°F) to 45°C (113°F)
Site Preparation
ExtremeSwitching and Summit Switches: Hardware Installation Guide 123
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