Prevent Electrostatic Discharge Damage; Site Environment; Site Considerations; Power Supply Considerations - Cisco Firepower 2120 Hardware Installation Manual

Installation Preparation

Prevent Electrostatic Discharge Damage

Electrostatic discharge (ESD) occurs when electronic components are improperly handled, and it can damage
equipment and impair electrical circuitry, resulting in intermittent or complete failure.
Always follow ESD-prevention procedures when removing and replacing components. Ensure that the chassis
is electrically connected to an earth ground. Wear an ESD-preventive wrist strap, ensuring that it makes good
skin contact. Connect the grounding clip to an unpainted surface of the chassis frame to safely ground ESD
voltages. To properly guard against ESD damage and shocks, the wrist strap and cord must operate effectively.
If no wrist strap is available, ground yourself by touching the metal part of the chassis.
For safety, periodically check the resistance value of the antistatic strap, which should be between one and
10 megohms.

Site Environment

See
When planning the site layout and equipment locations, consider the information in the next sections to help
avoid equipment failures and reduce the possibility of environmentally caused shutdowns. If you are currently
experiencing shutdowns or unusually high error rates with your existing equipment, these considerations may
help you isolate the cause of failures and prevent future problems.

Site Considerations

Considering the following helps you plan an acceptable operating environment for the chassis, and avoid
environmentally caused equipment failures.
• Electrical equipment generates heat. Ambient air temperature might not be adequate to cool equipment
• Ensure that the chassis cover is secure. The chassis is designed to allow cooling air to flow effectively
• Always follow the ESD-prevention procedures described previously to avoid damage to equipment.

Power Supply Considerations

See Power Supply Modules, on page 17
your model.
When installing the chassis, consider the following:
• Check the power at the site before installing the chassis to ensure that it is "clean" (free of spikes and
Hardware Specifications, on page 23
to acceptable operating temperatures without adequate circulation. Ensure that the room in which you
operate your system has adequate air circulation.
within it. An open chassis allows air leaks, which may interrupt and redirect the flow of cooling air from
the internal components.
Damage from static discharge can cause immediate or intermittent equipment failure.
noise). Install a power conditioner, if necessary, to ensure proper voltages and power levels in the
appliance input voltage.
Prevent Electrostatic Discharge Damage
for information about physical specifications.
for more detailed information about the power supply modules for
Cisco Firepower 2100 Series Hardware Installation Guide
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