ZyXEL Communications Prestige 681 User Manual page 30

Prestige 681 SDSL Router
2. The maximum recommended ambient temperature for the Prestige is 40º(104º). Care must be taken to
allow sufficient air circulation or space between units when the Prestige is installed inside a closed rack
assembly. The operating ambient temperature of the rack environment might be greater than room
temperature.
3. Installation in a rack without sufficient airflow can be unsafe.
4. Racks should safely support the combined weight of all equipment.
5. The connections and equipment that supply power to the Prestige should be capable of operating safely
with the maximum power requirements of the Prestige. In the event of a power overload, the supply
circuits and supply wiring should not become hazardous. The input rating of the Prestige is printed on
the nameplate.
6. The AC adapter must plug in to the right supply voltage, i.e. 120VAC adapter for North America and
230VAC adapter for Europe. Make sure that the supplied AC voltage is correct and stable. If the input
AC voltage is over 10% lower than the standard may cause the Prestige to malfunction.
7. Installation in restricted access areas must comply with Articles 110-16, 110-17, and 110-18 of the
National Electrical Code, ANSI/NFPA 70.
8. Do not allow anything to rest on the power cord of the AC adapter, and do not locate the product where
anyone can walk on the power cord.
9. Do not service the product by yourself. Opening or removing covers can expose you to dangerous high
voltage points or other risks. Refer all servicing to qualified service personnel.
10. Generally, when installed after the final configuration, the product must comply with the applicable
safety standards and regulatory requirements of the country in which it is installed. If necessary,
consult the appropriate regulatory agencies and inspection authorities to ensure compliance.
11. A rare condition can create a voltage potential between the earth grounds of two or more buildings. If
products installed in separate building are interconnected, the voltage potential can cause a hazardous
condition. Consult a qualified electrical consultant to determine whether or not this phenomenon exists
and, if necessary, implement corrective action before interconnecting the products. If the equipment is
to be used with telecommunications circuit, take the following precautions:
•
Never install telephone wiring during a lightning storm.
•
Never install telephone jacks in wet location unless the jack is specially designed for wet location.
•
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 (other than a cordless telephone) during
an electrical storm. There is a remote risk of electric shock from lightning.
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Hardware Installation & Setup