Cisco MWR-1941-DC-2T1 Hardware Installation Guide - Page 31
General Site Requirements - generator
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Chapter 2 Preparing to Install the Router General Site Requirements Preventing Electrostatic Discharge Damage Electrostatic discharge (ESD) can damage equipment and impair electrical circuitry. It can occur if electronic printed circuit cards are improperly handled and can cause complete or intermittent failures. Always follow ESD prevention procedures when removing and replacing modules: • Ensure that the router chassis is electrically connected to earth ground. • Wear an ESD-preventive wrist strap, ensuring that it makes good skin contact. Connect the clip to an unpainted surface of the chassis frame to channel unwanted ESD voltages safely to ground. To guard against ESD damage and shocks, the wrist strap and cord must operate effectively. • If no wrist strap is available, ground yourself by touching a metal part of the chassis. Caution For the safety of your equipment, periodically check the resistance value of the antistatic strap. It should be between 1 and 10 megohms (Mohm). General Site Requirements You can mount the Cisco MWR 1941-DC router in a 19-inch rack (with a 17.5- or 17.75-inch opening). The following information will help you plan your equipment rack configuration: • Allow clearance around the rack for maintenance. • Enclosed racks must have adequate ventilation. Ensure that the rack is not congested, because each router generates heat. An enclosed rack should have louvered sides and a fan to provide cooling air. Heat generated by equipment near the bottom of the rack can be drawn upward into the intake ports of the equipment above. • When mounting a chassis in an open rack, ensure that the rack frame does not block the intake or exhaust ports. If the chassis is installed on slides, check the position of the chassis when it is seated into the rack. • Baffles can help to isolate exhaust air from intake air, which also helps to draw cooling air through the chassis. The best placement of the baffles depends on the airflow patterns in the rack, which can be found by experimenting with different configurations. • When equipment installed in a rack (particularly in an enclosed rack) fails, try operating the equipment by itself, if possible. Power OFF other equipment in the rack (and in adjacent racks) to allow the router under test a maximum of cooling air and clean power. 78-15827-06B0 Cisco MWR 1941-DC Mobile Wireless Edge Router Hardware Installation Guide 2-3
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