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Installation and Maintenance Guide
Chapter 8
Install or Replace a Cooling Fan
This chapter describes how to replace a cooling fan in the BCM200 and BCM400 platform base
chassis. This chapter also describes how to add a second fan the BCM400 platform base chassis
(available through the field redundancy upgrade kit).
Cooling Fan Replacement Process
Cooling fans circulate air through the chassis of the Business Communications Manager platform
base chassis and expansion unit to prevent the components from overheating.
Figure 104 provides an overview of the fan replacement process.
Figure 104 Chassis cooling fan replacement overview
Note: For the BCM400 RFO factory configuration, a redundant cooling fan and power
supply is included.
Warning: You must remove all of the connections to the Business Communications
Manager platform base chassis before you power the system down.
Failure to disconnect lines before power down can cause damage to the system.
Warning: Protect the hardware components against damage from electro-static
discharge. Always wear a ground wriststrap before you handle components. Always place
the components in static-free container.
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