Quick Start
H3C S5500-EI Series Ethernet Switches
Chapter 2 Installation
Preparations
2-2
z
Adequate clearance is reserved at the air inlet/exhaust vents
for ventilation.
z
The rack or workbench has a good ventilation system.
z
The rack is sturdy enough to support the device and its
accessories.
z
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.
2.2.1 Temperature/Humidity
You must maintain a proper temperature and humidity in the
equipment room. Long-term high humidity may lead to bad insulation,
electricity leakage, mechanical property changes, and metal corrosion.
However, if the relative humidity is too low, captive screws may
become loose as the result of contraction of insulation washers and
static electricity may be produced in a dry environment to jeopardize
the circuits on the device. A high temperature is the most undesirable
condition, because it accelerates the aging of insulation materials and
thus significantly lowers reliability and service life of the switch.
For the temperature and humidity requirements of different
models, refer to section 1.8 “System Specifications of the S5500-EI
Series” on page 1-28.
2.2.2 Cleanness
Dust is a hazard to the operating safety of your device. The dust
accumulated on the chassis can be adsorbed by static electricity and
result in poor contact of metal connectors or metal contact points.
Especially when the indoor relative humidity is low, electrostatic
