Preparing for installation, Safety recommendations, Examining the installation site – H3C Technologies H3C S9800 Series Switches User Manual
Page 9: Temperature and humidity
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Preparing for installation
Safety recommendations
To avoid equipment damage and bodily injury, read the following safety recommendations before
installation. Note that the recommendations do not cover every possible hazardous condition.
•
Before cleaning the switch, remove all power cords from the switch. 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.
•
Do not place the switch on an unstable case or desk. The switch might be severely damaged in case
of a fall.
•
Ensure good ventilation of the equipment room and keep the air inlet and outlet vents of the switch
free of obstruction.
•
Make sure the input voltage is in the required range.
•
To avoid electrical shocks, do not open the chassis while the switch is operating or when the switch
is just powered off.
•
When replacing FRUs, including cards, power modules, and fan trays, wear an ESD wrist strap to
avoid ESD damage. For information about wearing an ESD wrist strap, see "
Examining the installation site
Make sure the installation site meets the following requirements:
•
Adequate clearance is reserved at the air inlet and outlet vents for ventilation.
•
The rack has a good ventilation system.
•
The rack has enough space to accommodate the switch. For information about switch dimensions
and requirements for the rack, see "
•
Identify the hot aisle and cold aisle at the installation site, and make sure ambient air flows into the
switch from the cold aisle and exhausts to the hot aisle.
•
Identify the airflow designs of neighboring devices, and prevent hot air flowing out of the bottom
device from entering the top device.
•
The rack is sturdy enough to support the switch and its accessories.
•
The rack is reliably grounded.
To ensure correct operation and long service life of the switch, install it in an environment that meets the
requirements described in the following subsections.
Temperature and humidity
Maintain temperature and humidity in the equipment room as described in "