Warnings and Notes
48 7750 SR-a4 and SR-a8 Installation Guide
Warnings and Notes
Danger:
• 7750 SR-a systems equipped with DC-input power supplies should be installed in
restricted access areas, such as a dedicated equipment room or an equipment closet,
in accordance with Articles 110-16, 110-17, and 110-18 of the National Electric Code
ANSI/ NFPA 70.
• This product complies with, and has been CE marked in accordance with, the European
Directives 89/336/EEC (EMC as amended by directive 93/68)
• The 7750 SR-a4 and 7750 SR-a8 routers are Class 1 laser products that use fiber-optic
communications. Only trained service personnel familiar with laser radiation hazards
should install or remove fiber-optic cables and cards in this system.
Warning:
• Ensure that you comply with the location requirements outlined in
Chassis Location
Requirements on page 59
. Failure to comply with these requirements may impede
proper airflow and may result in the system overheating.
Note:
General:
• Prepare the equipment rack and site before installing the router. Plan the router
placement near the power sources and network interface connections.
• Maintain a clearance of at least 20 in. (50.8 cm) at the front of the router.
• Maintain a clearance of at least 3 in. (7.6 cm) on each side of the rack to ensure
adequate air intake and exhaust.
• The 7750 SR-a chassis includes integrated rack mounting flanges to mount in a 19-in.
(482.6 mm) equipment rack.
7750 SR-a4-specific:
• An empty 7750 SR-a4 chassis weighs 22.71 lb (10.30 kg).
• A fully loaded 7750 SR-a4 chassis with the heaviest components and cards weighs
approximately 58 lb (26.31 kg).
7750 SR-a8-specific:
• An empty 7750 SR-a8 chassis weighs 30 lb (13.61 kg).
• A fully loaded 7750 SR-a8 chassis with the heaviest components and cards weighs
approximately 84 lb (38.10 kg).
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