Nokia NBB5005000 Installation Guide - Page 18

1 Overview „ Remove scarves and neckties, jewelry, and other loose items before you install the gateway. „ Do not remove the gateway cover under any circumstances. Ventilation Gateways can generate substantial heat during operation and therefore require adequate ventilation. You might need to install the gateway in an airconditioned room to ensure that its internal cooling system can maintain acceptable temperatures during operation. Warning Do not block any ventilation slots on the gateway. Internal components might overheat and be damaged. Humidity and Temperature During operation, ambient relative humidity should never exceed ninety percent and ambient air temperature must remain between 32° F and 113° F (0° C and 45° C). Safety Precautions Follow these safety instructions whenever you are working with the gateway. Caution Read and follow all of these precautions before you work near any power source. „ Circuit breakers must be installed in the fixed wiring on all circuits to which the gateways are connected. Ensure that all of the circuit breakers are easily accessible. 18 Nokia 5i and 10i Installation Guide