Appendix E Important Safety Instructions - ZyXEL Communications ZyXEL ZyWALL 50 User Manual

The following safety instructions apply to the ZyWALL.
1. Be sure to read and follow all warning notices and instructions.
2. The maximum recommended ambient temperature for the ZyWALL is 40º Celsius (104º
Fahrenheit).Care must be taken to allow sufficient air circulation or space between units when the
ZyWALL 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 ZyWALL should be capable of operating safely
with the maximum power requirements of the ZyWALL. In case of a power overload, the supply circuits
and supply wiring should not become hazardous. The input rating of the ZyWALL 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 ZyWALL 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.
Safety Instructions
Important Safety Instructions
ZyWALL 50 Internet Security Gateway
Appendix E
I