Nortel Passport 15000 Hardware Description page 128

128 Chapter 3 Shelf assembly
Figure 29
Parts inside a lower cooling unit NTHR51AB (bottom shown upside down)
Fan controller
module
Alarm cable
Power cable
LED cable
Power input
connector
241-1501-200 5.2S2
Red and green LEDs
This parts of the upper and lower cooling units are described in these sections:
• "Environmental control equipment" (page 129)
• "The impact of heat dissipation on rising shelf temperatures" (page 131)
• "Fans" (page 133)
• "Fan controllers" (page 133)
• "Air filters" (page 133)
• "Temperature sensors" (page 134)
Captive mounting screw
LED cable
Alarm cable
Temperature
sensor cable
Temperature
sensor
Fan power
cable
PPT 3436 002 AA2