User's Manual

Installation Requirements and Safety Precautions
8-4 LGCell 4.0 Installation, Operation, and Reference Manual PN 8100-40
620004-0 Rev. B
8.2 Safety Precautions
8.2.1 Underwriters Laboratory Installation Guidelines
Use the following guidelines when installing the LGCell:
1. Do not exceed the maximum ambient air temperature of 45°C during operation.
Provide sufficient airflow and cooling within the rack to prevent heat build-up
from exceeding this limit.
2. Be careful when servicing these products. If you are removing the system from
the rack, turn it off and remove the power cord first. There are no user-serviceable
parts inside the hubs or RAUs.
3. Do not compromise the amount of airflow required for safe operation of the
equipment when installing it in a rack. Both the Main Hub and the Expansion Hub
draw in air on the left side and exhaust heated air at the rear. The hubs pass
approximately 6 cu. ft. of air per minute through themselves. The Main Hub dissi-
pates a maximum of 25 watts of heat from its internal circuitry and the Expansion
Hub dissipates a maximum of 55 watts (with 4 RAUs attached).
4. The AC input current consumption of the hubs is rated as follows:
•Main Hub
– Typical:
117V AC, 0.22 amp @ 60 Hz
230V AC, 0.11 amp @ 50 Hz
–Maximum:
117V AC, 0.30 amp @ 60 Hz
230V AC, 0.15 amp @ 50 Hz
• Expansion Hub
– Typical:
117V AC, 0.50 amp @ 60 Hz
230V AC, 0.25 amp @ 50 Hz
–Maximum:
117V AC, 0.70 amp @ 60 Hz
230V AC, 0.35 amp @ 50 Hz
The internal power supply has internal fuses that are not user replaceable. Con-
sider the worst-case power consumption shown on the product labels when provi-
sioning the rack’s AC power source and distribution.