Vertiv
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+24 VDC Power System User Manual (Section 6013)
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Rev. G
170
WARNING!
Damage to the circuit card may result if the next step is not followed.
10.
Connect an approved grounding strap to your wrist. Attach the other end to a suitable ground.
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.
11.
Remove the four screws that secure the circuit card. Pull the circuit card forward out of the edge
connector at the back of the card, and remove from the cabinet.
12.
Set the following wiring options on the replacement circuit card to match the settings on the existing
circuit card:
•
J4 – Internal/External Voltage Sensing/Meter Reading Circuit Card
•
J5 – LVD Jumper
•
J6 – Shunt POD Jumper
•
J7 – Fuse Alarm Polarity Circuit Card
You can refer to "Setting Wiring Options" in the separate INSTALLATION INSTRUCTIONS (SECTION
6012) for details.
13.
Insert the replacement circuit card into the edge connector previously vacated. Fully seat the card in
the connector so that the mounting holes at the front of the card line up with the mounting posts
beneath. Install and tighten the two mounting screws at the front edge of the card.
14.
Reconnect the cables removed in step 8 to the appropriate connectors J1, J2, J8, J9 and J10 as
recorded in step 7.
15.
Reconnect the ribbon cable plug to connector J13. Insert fully so that the ejector tabs at each end of
the connector pivot inward fully.
16.
Remove the grounding wrist strap.
DANGER!
In the next step, external alarm wiring may be energized from an external source. DO NOT
allow bare wire ends to contact any grounded or energized object.
17.
READ THIS ENTIRE STEP AND UNDERSTAND BEFORE PROCEEDING. Reconnect the control wiring,
removed in step 6, to the appropriate terminals of TB1as recorded in step 5. To do so, for each wire,
remove the electrical tape that was applied to the wire end in a previous step. DO NOT allow bare wire
end to contact any grounded or energized object. Fully insert the bare wire end into the rectangular
opening in the terminal block. Gently tug on the wire to ensure that it cannot be pulled out of the
terminal block. Repeat for each wire.
18.
Reinstall the clear plastic cover in the bottom of the cabinet. To do so, place the cover on its two
mounting posts so that the mounting screw heads pass through the keyhole slots in the cover. Slide the
cover towards the rear. Tighten the two screws.
19.
Close the Distribution Cabinet's front door. The door can be shut without turning the captive fastener.
