Cisco uBR10012 Universal Broadband Router UBR10-FAN-ASSY= Installation Manual page 4

Overview
Fan Assembly Module (UBR10012-FAN-PLUS=)
This fan assembly as shown in
chassis and directs it across the internal components. This fan assembly module provides:
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Figure 2
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This fan assembly module works at four variable speed levels (0, 1, 2, and 3). The operating speed of the
fan is determined by the temperature of the facility. A thermistor, mounted on the fan assembly module,
is placed in front of the vent holes on the front panel. It measures the ambient air temperature on the
outside of the fan module. The threshold temperatures and speed levels are set internally and the fan
assembly controller monitors the thermistor and controls the speed of the fan. When powered on, the
fans operate at a speed according to the ambient average air temperature of the facility at the appropriate
speed level.
Cisco uBR10012 Universal Broadband Router Fan Assembly Module
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Increased cooling capability
Higher redundancy in case of a failure
Repositioned thermal sensor that detects the ambient temperature of the cable plant or facility and
adjusts the variable fan speeds to maintain the temperature
Fan Assembly Module (UBR10012-FAN-PLUS=)
CIS CO
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CIS CO
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Fan assembly module
Figure 2 has nine internal fans that draw cooling air into the front of the
U B R 1 0
0 1 2 -F A
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