Nortel Networks BCM1000 - Manual (Page 261)

261
Installation and Maintenance Guide
Chapter 18
Adding or replacing a cooling fan
Cooling fans circulate air through the chassis of the BCM1000 and expansion unit to prevent the
components from overheating.
This chapter describes how to replace a cooling fan. It also describes how to add a redundant fan to
two versions of the base unit.
Figure 119 provides an overview of the fan replacement process.
Figure 119 Process Map: Replacing a cooling fan
Note: A redundant cooling fan is included in the kit when you add a redundant power
supply to the server.
Note: BCM1000, version 2.5 hardware
The cooling fan connections on the BCM1000 version 2.5 hardware connect to the system
status module (SSM). Ensure that you follow the directions provided for this version of the
hardware when reconnecting new fans.
Set up unit for
maintenance
Install new fan.
Connect fan
cables to power
Restore unit to
operation
Check fan LED
FAN LED and/
or Temp. LED
indicate
problem
Disconnect and
remove failed
fan