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2.6 Cooling Fans
The switch is equipped with two cooling fans. Both fans are featured
with failure detection function. When the fan operation speed is below
the specification, it is detected as a failure. The fan status can be moni-
tored via management functions. One fan failure trap is also issued when
fan failure event occurs.
Important :
Do not operate the switch unit when a fan failure is detected. Without
normal operation of the cooling fans, the switch unit might not operate
properly or even might be damaged due to not enough ventilation. Re-
turn the defective unit to the dealer where it was purchased.