Installation Precautions; Prepare The Installation Site - HP Aruba 3810M Series Installation And Getting Started Manual

Installation Precautions:

Follow these precautions when installing the 3810M switches.
WARNING!
The rack or cabinet should be adequately secured to prevent it from becoming unstable
and/or falling over.
Devices installed in a rack or cabinet should be mounted as low as possible, with the
heaviest devices at the bottom and progressively lighter devices installed above.
CAUTION:
If the switch is to be shipped in a rack, it can be mounted and shipped in a Hewlett Packard
Enterprise 10K rack using the HPE X410 Universal Rack Mounting Kit (J9583A). Additionally,
it can be mounted in many 4-post racks using the HPE X410 Universal Rack Mounting Kit
(J9583A).
Ensure the power source circuits are properly grounded, then use the power cord supplied
with the switch to connect it to the power source.
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 should be easily
accessible in case the switch must be powered off.
Ensure the switch does not overload the power circuits, wiring, and over-current protection.
To determine the possibility of overloading the supply circuits, add together the ampere
ratings of all devices installed on the same circuit as the switch and 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.
For safe operation, proper switch cooling, and reduction of electromagnetic emissions,
ensure that a slot cover is installed on any unused module or power supply slot.
Do not install the switch in an environment where the operating ambient temperature might
exceed 45°C (113°F).
Ensure the air flow around the sides and back of the switch is not restricted.

1. Prepare the Installation Site

Cabling Infrastructure - Ensure the cabling infrastructure meets the necessary network
specifications. See
Installation Location - Before installing the switch, plan its location and orientation relative to
other devices and equipment:
In the front of the switch, leave at least 7.6 cm (3 inches) of space for the twisted-pair and
fiber-optic cabling.
In the back of the switch, leave at least 3.8 cm (1 1/2 inches) of space for the power cord.
If you are stacking the switches, you will need 20 to 23 cm (approximately 8 to 9 inches),
depending on the lengths of the stacking cables being used.
On the sides of the switch, leave at least 7.6 cm (3 inches) for cooling, except if the switch
is installed in an open EIA/TIA rack.
Cabling and Technology Information in the appendices for more information.
Installation Procedures 31