Chassis Replacement or Upgrade Prerequisites
The following guidelines will help to ensure your safety and protect the equipment. These guidelines
are not inclusive of all potentially hazardous situations, so be alert.
General Safety Precautions
The following are general precautions for any workplace:
Safety with Electricity
Follow these guidelines when working with any electrical equipment:
In addition, use the guidelines that follow when working with any equipment that is connected to
telephone wiring or other network cabling:
A fully conﬁgured chassis weighs approximately 160 pounds (72.6 kilograms [kg]). Before
installing the new (replacement) chassis, ensure that your site is properly prepared, so you can avoid
having to move the chassis later to accommodate power sources and network connections.
8 Cisco 7513 and Cisco 7576 Chassis Replacement and Upgrade Instructions
Do not perform any action that creates a potential hazard to people or makes the equipment
Do not work alone when potentially hazardous conditions exist.
Do not wear loose clothing, jewelry (including rings and chains), or other items that could get
caught in the chassis. Fasten your tie or scarf and sleeves.
Never install equipment that appears damaged.
Keep tools and chassis components away from walk areas.
Practice good housekeeping; keep tools and parts clean, accessible, and in good working order.
Before beginning any procedures requiring access to the chassis interior, locate the emergency
power-off switch for the room in which you are working.
Disconnect all power and external cables before moving a chassis.
Never assume that power has been disconnected from a circuit; always check.
Carefully examine your work area for possible hazards such as moist ﬂoors, ungrounded power
extension cables, and missing safety grounds.
Never install telephone wiring during a lightning storm.
Never install telephone jacks in wet locations unless the jack is speciﬁcally designed for wet
Never touch uninsulated telephone wires or terminals unless the telephone line has been
disconnected at the network interface.
Use caution when installing or modifying telephone lines.
Never try to lift an object that is too heavy for you to lift safely by yourself.
Ensure that your footing is solid, and balance the weight of the object between your feet.
Lift the object slowly; never move suddenly or twist your body as you lift.