H3C S7500X Series, Installation Manual, Page: 8 / 124

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ESD prevention
To prevent the electric component from being damaged by the electrostatic discharge (ESD), adhere
to the following requirements:
•
Ground the switch correctly. For how to ground your switch, see "Installing the switch."
•
Always wear an ESD wrist strap and make sure it is reliably grounded when installing pluggable
modules. For how to use an ESD wrist strap, see "Installing FRUs."
•
Hold a PCB by its edges. Do not touch any electronic components or printed circuit.
•
Put cards in an ESD bag.
Laser safety
WARNING!
Disconnected optical fibers or transceiver modules might emit invisible laser light. Do not stare into
beams or view directly with optical instruments when the switch is operating.
The switch is a Class 1 laser product.
Examining the installation site
The switch can only be used indoors. To ensure correct operation and long service life of your switch,
the installation site must meet the requirements in this section.
Weight support
Evaluate the floor loading as compared to the actual weight of the switch and its accessories (such
as rack, chassis, cards, and power modules, and make sure the floor can support the weight of the
rack and the switch chassis.
IMPORTANT:
When evaluating the floor loading, consider switch capacity expansion (for example, installing a new
card) in the future.
Temperature
CAUTION:
If condensation appears on the switch when you move it to a high-temperature environment, dry the
switch before powering it on to avoid short circuits.
To ensure the correct operation of the switch, ensure that the room temperature meets the
requirements described in
Table 1 .
Table 1 Temperature requirements
Temperature Range
Operating temperature 0°C to 45°C (32°F to 113°F)
Storage temperature –40°C to +70°C (–40°F to +158°F)