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Preparing for installation
Safety recommendations
To avoid any equipment damage or bodily injury caused by improper use, read the following safety
recommendations before installation. Note that the recommendations do not cover every possible
hazardous condition.
Safety symbols
When reading this document, note the following symbols:
WARNING
means an alert that calls attention to important information that if not understood or
followed can result in personal injury.
CAUTION
means an alert that calls attention to important information that if not understood or
followed can result in data loss, data corruption, or damage to hardware or software.
Electricity safety
•
Locate the emergency power-off switch in the room before installation. Shut the power off at
once in case accident occurs. Disconnect the power cord of the router if necessary.
•
Use an uninterrupted power supply (UPS).
•
Do not work alone when the router has power. Do not touch any power plug when it is
connected.
•
Always make sure the power has been disconnected during installation or replacement.
Laser safety
WARNING!
•
Do not stare into any fiber port when the router has power. The laser light emitted from the
optical fiber might hurt your eyes.
•
Use fiber test equipment, rather than a microscope or magnifier to observe an operating fiber
connector or port when you test link connectivity or system parameters.
The routers are Class 1 laser devices.
When you connect an optical fiber, follow these guidelines:
•
Some interface modules on the router provide shielded covers for the fiber ports (such as SFP
ports). Before using these fiber ports, remove the shielded covers. Keep the shielded covers
secure. When the fiber ports are not in use, install the shielded covers.
•
Fiber connectors are fitted with dust caps. Keep the dust caps secure when the fiber connectors
are in use. Install dust caps when the fiber connectors are not in use to avoid damage to their
end face. Replace the dust cap if it is loose or polluted.
•
Before connecting an optical fiber, use dust free paper and absolute alcohol to clean the end
face of the two fiber connectors. You can brush the end faces only in one direction.
•
The radius of a fiber must be not less than 10 cm (3.94 in).
