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Cisco CRS-1 Carrier Routing System SIP and SPA Hardware Installation Guide
OL-17439-01
Chapter 4 Preparing to Install a SIP or a SPA
Safety Guidelines
General Guidelines
Before you perform any procedure in this document, review the following safety guidelines to avoid
injuring yourself or damaging the equipment. These guidelines are for your safety. The guidelines do not
include all hazards. Be alert.
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Never attempt to lift an object that might be too heavy for you to lift by yourself.
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Keep the work area clear and dust free during and after installation.
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Do not allow dirt or debris to enter into any laser-based components.
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Keep tools and router components away from walk areas.
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Do not wear loose clothing, jewelry, and other items that could get caught in the router while
working with line cards, PLIMs, and SIPs.
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Use Cisco equipment in accordance with its specifications and product-usage instructions.
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Do not work alone if potentially hazardous conditions exist.
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Make sure your installation follows national and local electrical codes: in the United States,
National Fire Protection Association (NFPA) 70, United States National Electrical Code; in Canada,
Canadian Electrical Code, part I, CSA C22.1; in other countries, International Electrotechnical
Commission (IEC) 60364, part 1 through part 7.
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Connect only a DC power source that follows the safety extra-low voltage (SELV) requirements in
UL/CSA/IEC/EN 60950-1 and AS/NZS 60590 to the FCC DC-input power system.
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Make sure that you have a readily accessible two-poled disconnect device incorporated in the fixed
wiring of a line card chassis (LCC) configured with the DC-input power system. The LCC requires
short-circuit (overcurrent) protection to be provided as part of the building installation.
Electrical Equipment Guidelines
Follow these basic guidelines when working with any electrical equipment:
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Before beginning any procedures requiring access to the chassis interior, locate the emergency
power-off switch for the room in which you are working.
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Disconnect all power and external cables before moving a chassis.
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Do not work alone when potentially hazardous conditions exist.
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Never assume that power has been disconnected from a circuit; always check.
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Do not perform any action that creates a potential hazard to people or makes the equipment unsafe;
carefully examine your work area for possible hazards, such as moist floors, ungrounded power
extension cables, and missing safety grounds.
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) damage, which can occur when electronic cards or components are
improperly handled, results in complete or intermittent failures. SIPs, SPAs, and processor modules
comprise printed circuit boards that are fixed in metal carriers. Electromagnetic interference (EMI)
shielding and connectors are integral components of the carrier. Although the metal carrier helps to
protect the board from ESD, use a preventive antistatic strap during handling.
