User Instructions UM582127000
Spec. No. 582127000 (Model 721NPBB) Issue AC, January 2, 2013
Chapter 4. Troubleshooting and Repair Page 53
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Replacing a Distribution Panel Danger: Performing this procedure exposes service personnel to battery potential.
Exercise extreme caution not to inadvertently contact or have any tool
inadvertently contact any energized electrical termination.
Procedure
Note: Refer to Figure 4-17 as this procedure is performed.
Removing the Distribution Panel
1) Open the distribution cabinet’s front door by turning the latch in the
counterclockwise position.
2) Remove the plastic shield covering the circuit breakers or fuseholders on the
panel to be removed by loosening the screws holding the shield and sliding the
shield upwards.
3) Disconnect all load or battery wiring from the circuit breaker or fuse positions.
4) On panels equipped with a ground busbar, remove all load return or battery
return wiring from the ground busbar.
5) On panels equipped with shunts, label the shunt leads then remove them from
the panel.
6) Locate the in-line FA/CBA connector located near the back of the panel, and
separate the connector halves.
7) Refer to Figure 4-17 and remove the hardware securing the panel’s Ground
Busbar (if equipped) to the distribution cabinet’s busbar.
8) For load distribution panels, refer to Figure 4-17 and remove the hardware
securing the panel’s System Load Distribution busbar to the distribution cabinet’s
busbar.
9) For battery distribution panels, refer to Figure 4-17 and remove the hardware
securing the panel’s Battery Busbar to the distribution cabinet’s busbar.
10) For dual voltage load distribution panels, refer to Figure 4-17 and remove the
hardware securing the +24V jumper leads.
11) Refer to Figure 4-17 and remove the hardware securing the distribution panel to
the distribution cabinet. Remove the panel from the distribution cabinet.