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Appendix H
Safety Warnings and Instructions
1. Be sure to read and follow all warning notices and instructions.
2. The maximum recommended ambient temperature for the Contivity 221 is 40º
Celsius (104º Fahrenheit). Care must be taken to allow sufficient air
circulation or space between units when the Contivity 221 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 Contivity 221 should
be capable of operating safely with the maximum power requirements of the
Contivity 221. In case of a power overload, the supply circuits and supply
wiring should not become hazardous. The input rating of the Contivity 221 is
printed on the nameplate.
6. The power cord or power adaptor must plug in to the right supply voltage, i.e.
110VAC for North America and 230VAC for Europe. Make sure that the
supplied AC voltage is correct and stable.
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 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.
Contivity 221 VPN Switch User's Guide
H-1
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