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3Com Switch 4050 and 4060 — Rear View Detail 19
WARNING: The system must not be left without a power supply or a
blanking plate in either of the two slots (except during replacement of
the power supplies). Tighten all screws with a suitable screwdriver.
WARNING: Care must be taken when removing a PSU as it may be hot.
The replacement of power supplies should be completed within two
minutes to avoid normal cooling being disturbed.
Power Socket Each Power Supply automatically adjusts its power setting to any power
voltage in the range 90-240 VAC.
WARNING: Mains power must be removed from the PSU before
removing the PSU. A PSU must only be powered once it has been
installed.
Replaceable Fan Trays The 3Com Switch 4050 and 4060 are provided with two identical fan
trays which can be replaced. Contact your supplier for further
information. For information on installation, please refer to the
documentation that accompanies your fan tray.
The 3Com Switch 4050 and 4060 support the 3Com Fan Tray (3C17717).
WARNING: A fan tray can be temporarily removed and replaced while
the system is running without impacting operations. The system must not
be left with either fan tray removed for more than two minutes or
damage to the product may be caused. Tighten all screws with a suitable
screwdriver.
WARNING: Care must be taken when removing the fan tray as the fan
blades may continue to spin for a short time after removal. Keep fingers
clear.
CAUTION: You are advised to replace a failed fan as soon as possible.
Although the unit will continue to operate after a single fan failure its
airflow and temperature will be affected. In such circumstances, the unit
may overheat and automatically shutdown. If the unit continues to
operate with reduced airflow, its long term reliability will also be reduced.