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10-10 MBP routine maintenance
Procedure 10-3
Replacing the NT4K2630 MBP blower module
Use this procedure to replace the NT4K2630 blower module housed in the
pedestal of the modular business package (MBP) cabinets.
Action
Step
1
2
3
AccessNode P0904244 Issue 1.0
Action
Remove the front pedestal grille from the MBP cabinet, as shown in
Figure 10-5:
a. Release the two captive screws that hold the pedestal grille in place.
b. Grasp the top left and top right edges of the grille.
c. Tilt the grille outward and lift it upward to remove it.
Set both blower module circuit breakers to the down (off) position.
DANGER
Risk of personal injury from fan blades
Turn blower power off and wait 2 minutes before removing
unit.
Fan blades may still be turning after power is turned off.
CAUTION
Service Interruption after 15 minutes
Blower unit power down or removal for more than 15
minutes will cause service interruption.
As shown in Figure 10-6, turn the two screws on the blower module
counterclockwise until the cam is rotated 90 degrees, then pull firmly to
remove the blower from the pedestal.
—continued—
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