Chapter 2 Preparing for Installation
Safety Guidelines
Safety Guidelines for Personal Safety and Equipment Protection
The following guidelines help ensure your safety and protect the equipment. This list does not include all the potentially hazardous situations. Therefore, you should be on alert.
•Before moving the system, always disconnect all the power cords and interface cables.
•Never assume that power is disconnected from a circuit; always check.
•Before and after installation, keep the chassis area clear and
•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.
•Do not perform any action that creates a potential hazard to people or makes the equipment unsafe.
•Do not wear loose clothing that may get caught in the chassis.
•When working under conditions that may be hazardous to your eyes, wear safety glasses.
Safety Precautions for Module Installation and Removal
Be sure to observe the following safety precautions when you work on the router.
To see translations of the warnings that appear in this publication, refer to the Regulatory Compliance and Safety Information document that accompanied this device.
Warning Class 1 laser product. Statement 1008
Warning Do not stare into the beam or view it directly with optical instruments. Statement 1011
Warning Invisible laser radiation present. Statement 1016
Warning Hazardous network voltages are present in WAN ports regardless of whether power to the unit is OFF or ON. To avoid electric shock, use caution when working near WAN ports. When detaching cables, detach the end away from the unit first. Statement 1026
Warning Blank faceplates and cover panels serve three important functions: they prevent exposure to hazardous voltages and currents inside the chassis; they contain electromagnetic interference (EMI) that might disrupt other equipment; and they direct the flow of cooling air through the chassis. Do not operate the system unless all cards, faceplates, front covers, and rear covers are in place. Statement 1029
Warning Hazardous voltage or energy is present on the backplane when the system is operating. Use caution when servicing. Statement 1034
Cisco ASR 903 Router Hardware Installation Guide
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