Vertiv NetSure-48 VDC Installation And User Manual page 34

Vertiv™ NetSure™ -48 VDC Bulk Output Rectifier System Installation and User Manual
Refer to the NCU Controller Instructions (UM1M830BNA) for a procedure.
Clearing a Rectifier Communications Fail Alarm after Removing a Rectifier
If a rectifier module is removed from the system, a rectifier communications failure alarm is generated. If the rectifier module will not
be replaced, the alarm should be cleared.
Refer to the NCU Controller Instructions (UM1M830BNA) for a procedure.
Clearing a Rectifier Lost Alarm
If the controller resets while a rectifier communications fail alarm is active, the rectifier communications fail alarm is replaced with a
rectifier lost alarm.
Refer to the NCU Controller Instructions (UM1M830BNA) for a procedure to clear the alarm.
12.5 Replacement Information
Replacement Assemblies
When a trouble symptom is localized to a faulty rectifier, controller, or system circuit card; that particular device or circuit card should
be replaced in its entirety. No attempt should be made to troubleshoot or repair individual components on any rectifier, controller, or
circuit card.
12.6 Replacement Procedures
DANGER! Adhere to the "Important Safety Instructions" presented at the front of this document.
Replacing a Rectifier
Refer to the Rectifier Instructions (UM1R482000e3) for a rectifier replacement procedure. Refer also to "System Troubleshooting
Information" on page 27.
The rectifier being replaced is assigned by the NCU the lowest available identification number. If desired, you can change the
identification number, see "Configuring the NCU Identification of Rectifiers and Assigning which Input Feed is Connected to the
Rectifiers" on page 21.
Replacing the NCU Controller
Refer to the NCU Controller Instructions (UM1M830BNA) for a controller replacement procedure.
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