Aruba 8325 Series, Руководство по установке и началу работы

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Chapter 3 Installing the switch 29
Installation precautions
To avoid personal injury or product damage when installing your switch, read the installation precautions and
guidelines below.
• Do not mount the switch on a wall, on or under a table, or on or under any other horizontal
surface.
• Mount devices installed in a rack or cabinet as low as possible. Put the heaviest devices at the
bottom and progressively lighter devices installed above.
• To prevent the rack or cabinet from becoming unstable and/or falling over, ensure that it is
adequately secured.
• Ensure the power source circuits are properly grounded. Then connect the switch to the power
source by using the power cord supplied with the switch.
• If your installation requires a different power cord than the one supplied with the switch and power
supply, be sure the cord is adequately sized for the switch’s current requirements. In addition, be
sure to use a power cord displaying the mark of the safety agency that defines the regulations for
power cords in your country. The mark is your assurance that the power cord can be used safely
with the switch and power supply.
• When installing the switch, the AC outlet should be near the switch and be easily accessible in
case the switch must be powered off.
• Do not install the switch in an environment where the operating ambient temperature exceeds its
specification. (See the
Environmental information.)
• Ensure that the switch does not overload the power circuits, wiring, and over-current protection.
To determine the possibility of overloading the supply circuits, add the ampere ratings of all
devices installed on the same circuit as the switch. Then compare the total with the rating limit for
the circuit. The maximum ampere ratings are usually printed on the devices near the AC power
connectors.
• Ensure that the air flow around the switch is not restricted. Leave at least 3 inches (7.6 cm) for
cooling. For air flow direction, determine whether your switch has front-to-back or back-to-front
fans and power supply units.
• All power supplies and fan assemblies installed in a 8325 switch must have the same cooling air
flow direction (FB or BF).
• Never insert or remove a power supply while the power cord is connected. Verify that the cord has
been disconnected from the power supply before installation or removal.
If a power supply must be removed, and then reinstalled, wait at least 5 seconds before reinstallation.
Otherwise, damage to the switch may occur.
The power supply needs this time to bleed off any retained power.