To Remove A Bcm400 Cooling Fan; Removing A Bcm400 Cooling Fan - Nortel BCM200 Installation And Maintenance Manual

326 Chapter 25 Replacing or installing a cooling fan
Figure 177 Cooling fan replacement overview
FAN LED and/or
temp. LED
indicate problem
Set up unit for
maintenance
Disconnect and
remove failed fan

Removing a BCM400 cooling fan

Use this procedure to remove the cooling fans in a BCM400 standard or redundant feature option
(RFO) configuration. The BCM400 standard main unit has one fan. The BCM400 RFO has two
fans.
Warning: Protect the hardware components against damage from electrostatic discharge.
Always wear a grounded wrist strap before you handle components. Always place the
components in a static-free container.
Before you shut down the system, determine if a fan (in the redundant version) has failed. Refer to
Table 84.

To remove a BCM400 cooling fan

1 Shut down the system (see
2
Disconnect the BCM system from the AC power outlet.
3 Attach one end of the grounding strap to your wrist and the other end to a grounded metal
surface.
4
Remove the fan access panel at the rear of the BCM400 main unit (see
a Remove the fan access panel screws at the top and bottom of the panel. Place the screws in
a safe location.
b Tip the top of the fan access panel toward you.
c Grasp the fan access panel with both hands and lift the away from the main unit. Do not
stretch the fan cables.
N0060612 N0060612
Install new fan.
Connect fan
cables to power
Restore unit to
operation
Check fan LED
"Performing a system shutdown" on page 233).
Figure 178):