Vertiv™ NetSure™ 5100 Series -48 VDC Power System User Manual
Proprietary and Confidential © 2022 Vertiv Group Corp.
49
Replacing a System Interface Circuit Card
Procedure
NOTE!
Refer to Figure 5.8 as this procedure is performed.
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.
WARNING!
Damage to the circuit card may result if the next step is not followed.
2.
Connect an approved grounding strap to your wrist. Attach the other end to a suitable ground.
3.
Remove the rear covers to access the circuit card mounting screws. Refer to Figure 5.8 for circuit card location.
4.
Carefully label any wires connected to the customer connection terminal block on the circuit card. These wires must be
connected to the same terminals on the replacement circuit card. Refer to Figure 5.8.
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 Figure 5.8.
6.
Remove the external wiring from the customer connection terminal block. DO NOT allow the bare wire end to contact any
grounded or energized object. Isolate the wire end with electrical tape. Repeat for each wire to be removed.
7.
Unplug all connectors plugged into the circuit card.
8.
Remove the screws securing the circuit card and remove the circuit card from the distribution cabinet.
9.
In this step, ensure you do not intermix the old and replacement circuit cards. Set the shorting jumper on the replacement
circuit card to match the location on the old circuit card. Jumper settings are documented in the “Setting Jumper and Switch
Options” section of the Power System Installation Instructions (IM582137100).
10.
Orient the replacement circuit card over its mounting position inside the distribution cabinet, and secure with the screws
removed from the old circuit card.
11.
Plug all connectors removed from the old circuit card into the same position on the replacement circuit card.
12.
Reconnect the external wiring to the correct terminals on the customer connection terminal block. First remove the electrical
tape that was applied to the bare wire end in a previous step. DO NOT allow the bare wire end to contact any grounded or
energized object. After securing the wire, gently tug on the wire to ensure that it cannot be pulled out of the terminal block.
Repeat for each wire to be reconnected.
13.
Reinstall the rear covers.
14.
Remove the grounding wrist strap.
15.
Enable the external alarms, or notify appropriate personnel that this procedure is finished.
16.
Ensure that there are no local or remote alarms active on the system.
