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Installation Preparation
• 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 ESD prevention procedures to avoid damage to equipment. Damage from static discharge
Power Supply Considerations
See
Power Supply Module, on page 24
When installing the chassis, consider the following:
• Check the power at the site before installing the chassis to ensure that it is free of spikes and noise. Install
• Install proper grounding for the site to avoid damage from lightning and power surges.
• The chassis does not have a user-selectable operating range. Refer to the label on the chassis for the
• Several styles of AC-input power supply cords are available for the chassis; make sure that you have the
• If you are using dual redundant (1+1) power supplies, we recommend that you use independent electrical
• Install an uninterruptible power source for your site, if possible.
Rack Configuration Considerations
See
Rack-Mount the Chassis Using Slide Rails, on page 54
Consider the following when planning a rack configuration:
• Standard 19-inch (48.3 cm) 4-post EIA rack with mounting rails that conform to English universal hole
• The rack-mounting posts need to be 2 to 3.5 mm thick to work with the slide rail rack mounting.
• If you are mounting a chassis in an open rack, make sure that the rack frame does not block the intake
• If your rack includes closing front and rear doors, the doors must have 65 percent open perforated area
• Be sure enclosed racks have adequate ventilation. Make sure that the rack is not overly congested as each
to acceptable operating temperatures without adequate circulation. Make sure 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.
can cause immediate or intermittent equipment failure.
a power conditioner, if necessary, to ensure proper voltages and power levels in the appliance-input
voltage.
correct appliance input-power requirement.
correct style for your site.
circuits for each power supply.
spacing according to section 1 of ANSI/EIA-310-D-1992.
or exhaust ports.
evenly distributed from top to bottom to permit adequate airflow.
chassis generates heat. An enclosed rack should have louvered sides and a fan to provide cooling air.
for more detailed information about the power supply in the chassis.
for the procedure for rack-mounting the chassis.
Cisco Secure Firewall 3100 Series Hardware Installation Guide
Power Supply Considerations
49
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