• 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 chassis.
• 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 that the operating 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 power supplies and fan trays, wear an ESD wriststrap to avoid damaging the units.
Installation site requirements
• The switch must be used indoors.
• If you rack-mount your switch, make sure that the following requirements are met:
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Adequate clearance is reserved at the air inlet and outlet vents for ventilation.
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The rack has a good ventilation system.
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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.
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Identify the airflow designs of neighboring devices, and prevent hot air flowing out of the bottom device from entering
the top device.
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The rack is sturdy enough to support the switch and its accessories.
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The rack is reliably grounded.
• To ensure correct operation and long service life of your switch, install it in an environment that meets the requirements
described in the following sections:
◦
Temperature and humidity requirements
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Temperature and humidity requirements
Make sure the temperature and humidity in the equipment room are in the acceptable range.
• Lasting high relative humidity can cause poor insulation, electricity leakage, mechanical property change of materials, and
metal corrosion.
• Lasting low relative humidity can cause washer contraction and ESD and bring problems including loose captive screws
and circuit failure.
• High temperature can accelerate the aging of insulation materials and significantly lower the reliability and lifespan of the
switch.
For the temperature and humidity requirements of different switch models, see
Chassis views and technical specifications.
8 Preparation for installation
