Cisco Firepower 2120 Hardware Installation Manual page 32

Installation Notes and Warnings
Statement 1015—Battery Handling
Warning
There is the danger of explosion if the battery is replaced incorrectly. Replace the battery only with the
same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the
manufacturer's instructions.
Statement 12—Power Supply Disconnection Warning
Warning
Before working on a chassis or working near power supplies, unplug the power cord on AC units; disconnect
the power at the circuit breaker on DC units.
Warning Statement 43—Jewelry Removal Warning
Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces,
and watches). Metal objects will heat up when connected to power and ground and can cause serious burns
or weld the metal object to the terminals.
Statement 94—Wrist Strap Warning
Warning
During this procedure, wear grounding wrist straps to avoid ESD damage to the card. Do not directly
touch the backplane with your hand or any metal tool, or you could shock yourself.
Statement 1004—Installation Instructions
Warning
Read the installation instructions before connecting the system to the power source.
Statement 1007—TN and IT Power Systems
Warning
This equipment has been designed for connection to TN and IT power systems.
Statement 1017—Restricted Area
Warning
This unit is intended for installation in restricted access areas. A restricted access area can be accessed
only through the use of a special tool, lock and key, or other means of security.
Warning Statement 1021—SELV Circuit
To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network
voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some
LAN and WAN ports both use RJ-45 connectors. Use caution when connecting cables.
Cisco Firepower 2100 Series Hardware Installation Guide
28
Installation Preparation