To prevent the system from overheating, do not operate it in an area that exceeds the maximum recommended
ambient temperature of 158°F (70°C). Statement 1047
Warning
The chassis should be mounted on a rack that is permanently affixed to the building. Statement 1049
Warning
IMPORTANT SAFETY INSTRUCTIONS: This warning symbol means danger. You are in a situation that
could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical
circuitry and be familiar with standard practices for preventing accidents. Use the statement number provided
at the end of each warning to locate its translation in the translated safety warnings that accompanied this
device. Statement 1071
Warning
This is a Class A Device and is registered for EMC requirements for industrial use. The seller or buyer should
be aware of this. If this type was sold or purchased by mistake, it should be replaced with a residential-use
type. Statement 294
Warning
This is a class A product. In a domestic environment this product may cause radio interference in which case
the user may be required to take adequate measures. Statement 340
Warning
This equipment is in compliance with the essential requirements and other relevant provisions of Directive
1999/5/EC. Statement 287
Warning
Suitable for mounting on and over a concrete or other non-combustible surface only. Statement 345
Warning
Safety Guidelines for Personal Safety and Equipment Protection
The following guidelines ensure your safety and protect the equipment. This list does not include all the
potentially hazardous situations. Therefore, you must be alert.
• Before moving the system, always disconnect all power cords and interface cables.
• Never assume that power is disconnected from a circuit; always check.
• Before and after installation, keep the chassis area clean and dust free.
• Keep tools and assembly components away from walk areas where you or others could trip over them.
• Do not work alone if potentially hazardous conditions exist.
Cisco ASR-920-20SZ-M Aggregation Services Router Hardware Installation Guide
2
Safety Warnings
Safety Guidelines for Personal Safety and Equipment Protection
