2
To avoid electrical shocks, do not open the chassis while the switch is operating or when the
switch is just powered off.
When replacing field replaceable units (FRUs), including power supplies and fan modules, wear
an ESD wrist strap to avoid damaging the units.
Examining the installation site
The switch 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 outlet vents for ventilation.
The rack or workbench has a good ventilation system.
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
neighboring device from entering the device.
The rack is sturdy enough to support the switch and its accessories.
The rack or workbench 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 subsections.
Temperature/humidity
For correct operation and long service life of your switch, maintain the temperature and humidity in
the equipment room at acceptable ranges.
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 cause issues
including loose mounting 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 the switch, see "Appendix A Chassis views and
technical specifications".
Cleanliness
Dust buildup on the chassis might cause electrostatic adsorption and dust corrosion, resulting in
poor contact of metal connectors and contact points. This might shorten the device's lifetime and
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