NetSure
™
-48V DC Power System
User Instructions, UM582127000 (Issue AD, January 20, 2014)
Spec. No: 582127000
Code: UM582127000
Model No: 721
NPBB
Issue AD, January 20, 2014
[42]
Optional Manual Battery Disconnect Circuit Card Replacement
PROCEDURE
1.
Performing this procedure may activate external alarms.
Do one of the following. If possible, disable these alarms.
If these alarms cannot be easily disabled, notify the
appropriate personnel to disregard any future alarms
associated with this system while the procedure is being
performed.
Danger! Performing the next steps exposes service
personnel to battery potential. Exercise extreme
caution not to inadvertently contact or have any tool
inadvertently contact any energized electrical
termination.
2.
Open the distribution cabinet’s front door by turning the
latch in the counterclockwise position.
Warning! Damage to the circuit card may result if the
next step is not followed.
3.
Connect an approved grounding strap to your wrist.
Attach the other end to a suitable ground.
4.
Remove the top and front panels to access the circuit
cards at the bottom of the distribution cabinet.
5.
Carefully label the connectors plugged into the circuit
card. These connectors must be plugged into the same
connectors on the replacement circuit card. Refer to
6.
Unplug all connectors plugged into the circuit card.
7.
Remove the screws securing the circuit card and remove
the circuit card from the distribution cabinet.
8.
Place the replacement circuit card into the mounting
position inside the distribution cabinet, and secure with
the screws removed from the old circuit card.
9.
Plug all connectors removed from the old circuit card into
the same position on the replacement circuit card.
10.
Remove the grounding wrist strap.
11.
Reinstall the top and front panels that cover the circuit
cards at the bottom of the distribution cabinet.
12.
Close the distribution cabinet’s front door. Turn the latch
clockwise to secure the door.
13.
Enable the external alarms, or notify appropriate
personnel that this procedure is finished.
14.
Ensure that there are no local or remote alarms active on
the system.
Figure 27.
Optional Manual Battery Disconnect Circuit Card Connector
Locations
Replacing a Distribution Panel
Danger! Performing the next steps 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
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.
J1
J2
Danger
Warning
Danger
