Secure Router 4134 Fan Tray - Nortel Secure Router 4134 Installation Manual

Figure 2
Secure Router 4134 DC power supply module

Secure Router 4134 Fan tray

ATTENTION
The information in this section is not applicable to the Secure Router 2330.
The Secure Router 4134 has four fans in the fan tray assembly.
The Secure Router 4134 checks the fan tray for faults every 15 seconds,
and checks the temperature in the chassis every 2 minutes. The fan speed
adjusts based on the chassis temperature. The following table shows the
relationship between chassis temperature and fan speed.
Table 1
Chassis temperature and fan speed
Temperature
Status
Normal Less than 61 degrees Celsius (141.8 degrees
Fahrenheit)
Critical Greater or equivalent to 61 degrees Celsius (141.8
degrees Fahrenheit)
Fault Greater or equivalent to 71 degrees Celsius (159.8
degrees Fahrenheit)
ATTENTION
While the system power is on, fans in the fan tray never completely stop
rotating.
Nortel Secure Router 2330/4134
Installation — Hardware Components
NN47263-301 03.01 7 September 2009
Copyright © 2007-2008 Nortel Networks. All Rights Reserved.
Secure Router 4134 Fan tray 19
Fan speed
39%
90%
100%