HP A5120 EI Series Installation Guide

2
Safety recommendations
WARNING!
Read all of the safety instructions in the Compliance and Safety Gui de supplied with your device before
installation and operation.
This section provides general recommendations. For more information, see the Compliance and Safety
Guide.
 Turn off all power and remove all power cables before opening the chassis.
 Unplug all power and external cables before moving the chassis.
 Locate the emergency power-off switch before installation and shut off power immediately if
necessary.
 Always wear an ESD-preventive wrist strap when installing the device.
 Do not stare into the open optical interface. The high-power density light can burn the retina.
 Use a good grounding system to protect your router against lightning shocks, interference, and ESD.
This is essential to the operating reliability of your switch.
 Make sure that the resistance between the chassis and the ground is less than 1 ohm.
Installation site requirements
The A5120 EI and A5120 SI switches must be used indoors. You can mount your switch in a rack or on a
workbench, but make sure:
 Adequate clearance is reserved at the air inlet and exhaust vents for ventilation.
 The rack or workbench has a good ventilation system.
 The rack is sturdy enough to support the switch and its accessories.
 The rack or workbench is well earthed.
To ensure normal operation and long service life of your switch, install it in an environment that meets the
requirements described in the following subsections.
The following tables provide information about temperature, humidity, dust concentration limits, and air
quality requirements.
Table 3 Temperature and humidity requirements
Chassis
Operating temperature
Relative humidity
All chassis
0°C to 45°C (32°F to 113°F)
10% to 90%, noncondensing
Table 4 Dust concentration limit in the equipment room
Substance
Concentration limit (particles/m³)
Dust
≤ 3 x 10
4
(no visible dust on the tabletop over three days)
NOTE:
Dust diameter ≥ 5 μm
The equipment room must also meet strict limits on salts, acids, and sulfides to eliminate corrosion and
premature aging of components, as shown in Table 5.

HP A5120 EI Series Specifications

General

Brand	HP
Model	A5120 EI Series
Category	Switch
Language	English