Safeguards are built into all Extreme Networks switches and power supply units to
minimize the risk of re.
Table 7: Thermal Shutdown and Restart Behavior
Switch Model(s) Behavior
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
off and the switch shuts down. The system remains in the OFF
state until the system has sufcient time to cool and the internal
thermal sensor measures a temperature lower than the maximum
specied ambient temperature, at which time the system restarts
automatically.
Alternately, you can restart the system by removing and then
restoring all line power to the system. The internal sensor must
still measure a system temperature that is lower than the
maximum specied ambient temperature, so recovery might not be
immediate.
Control the Humidity Level
To maximize equipment life, keep operating humidity between 50% and 70% relative
humidity (non-condensing) during typical operation.
The equipment can operate between 5% and 95% relative humidity (non-condensing)
for short intervals.
Protect Your System from ESD (Electrostatic Discharge)
Before You Begin
Your system must be protected from static electricity or ESD. Take the following
measures to ensure optimum system performance:
Procedure
• Remove materials that can cause electrostatic generation (such as synthetic resins)
from the wiring closet.
Check the appropriateness of oor mats and ooring.
• Connect metal chassis, conduit, and other metals to ground using dedicated
grounding lines.
• Use electrostatically safe equipment.
If you are working with pluggable interface modules, wear an ESD-preventive wrist
strap and connect the metal end to a grounded equipment rack or other source of
ground.
Rack Specications and Recommendations
Racks should conform to conventional standards.
Site Preparation Control the Humidity Level
ExtremeSwitching 5320 Series Hardware Installation Guide 31
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