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4.6 Replacement Procedures
4.6.1 Important Safety Instructions
DANGER! Adhere to the "Important Safety Instructions" presented at the front of this document.
4.6.2 Replacing a Rectifier or Converter Module
Refer to the Rectifier Instructions (UM1R482000E3), -48 VDC to +24 VDC Converter Instructions (UM1C48241500), or -48 VDC to
-58 VDC Converter Instructions (UM1C48582000P3) for a rectifier and converter module replacement procedure. Refer also to
"System Troubleshooting Information" on page 23.
The rectifier or converter module being replaced is assigned by the controller the lowest available identification number. If desired,
you can change the identification number. Refer to the NCU Instructions (UM1M830BNA) for a procedure.
4.6.3 Replacing the Controller
Refer to the NCU Instructions (UM1M830BNA) for a controller replacement procedure.
4.6.4 Replacing a Distribution Device
General
Replace distribution devices with the same type and rating. Refer to System Application Guide SAG582137000 for part numbers.
Distribution Fuse "Alarm Fuse" Replacement
If a distribution fuse opens, the associated alarm fuse opens. Replace the distribution fuse before replacing the alarm fuse.
Procedure
1.
An alarm fuse is removed by pulling it straight out of the fuseholder. If the alarm fuse is located in a modular fuse carrier, hold
the fuse carrier in place with your thumb while pulling on the alarm fuse to prevent the entire carrier from inadvertently being
pulled out.
2.
Safety fuse covers are provided for all Bussmann GMT type fuses installed in the system. These covers snap onto the fuses
and provide protection from exposed electrical terminations when a fuse opens. Insure that the safety fuse cover is installed
after replacing a fuse. Refer to Figure 4.1 for installation details.
Figure 4.1 Installation of Safety Fuse Covers
Safety Cover
P/N 248898700
(GMT-X)
Proprietary and Confidential © 2022 Vertiv Group Corp.
Vertiv™ NetSure™ 512
NGBB
Safety Cover
P/N 102774
(GMT-Y)
-48 VDC Power System User Manual
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