Chapter 2 Installation Preparations; Safety Precautions; Installation Site; Temperature/Humidity - H3C S5500-28C-EI Installation Manual

Installation Manual
H3C S5500-EI Series Ethernet Switches

Chapter 2 Installation Preparations

2.1 Safety Precautions

To avoid any device impairment and bodily injury caused by improper use, observe
these rules:
Before cleaning the switch, unplug the power plug of the switch first. Do not clean
the switch with wet cloth or liquid.
Do not place the switch near water or in a damp environment. Prevent water or
moisture from entering the switch chassis.
Do not place the switch on an unstable case or desk. The switch might be
damaged severely in case of a fall.
Ensure proper ventilation of the equipment room and keep the ventilation vents of
the switch free of obstruction.
Connect the yellow-green protection grounding cable before power-on.
Make sure that the operating voltage is in the range labeled on the switch.
Do not open the chassis to avoid electrical shocks when the switch is operating or
just when the switch is powered off.
When replacing interface cards, wear ESD-preventive gloves to avoid damaging
the cards.

2.2 Installation Site

The S5500-EI series must be used indoors. You can mount the switch in a rack or on a
workbench, but make sure:
Adequate clearance is reserved at the air inlet/exhaust vents for ventilation.
The rack or workbench has a good ventilation system.
The rack is sturdy enough to support the device 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.

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
Chapter 2 Installation Preparations
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