User's Manual

Corning Optical Communications
User Manual
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Page 14
4. Install the fan for cooling if multiple PS-AUs are installed in the same rack.
It is necessary to allow at least 3 rack units (132mm) of free space below each unit for heat dissipation
without fan installed or 1 rack unit (44mm) of free space below each unit with fan occupied in the middle.
Otherwise, the device temperature may rise and affect the service life of the device.