NetSure
™
-48 VDC Power System
User Manual, UM582137200
Spec. No: 582137200
Document Code: UM582137200
Model No: NetSure™ 5100
Revision A, January 11, 2017
[9 of 17]
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.
Refer to System Application Guide SAG582137200 for
replacement part numbers.
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 8.
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” in the separate Power System Installation Manual
(IM582137200).
REPLACING THE NCU CONTROLLER
Refer to the NCU Controller Instructions (UM1M830BNA) for a
controller replacement procedure.
REPLACING A DISTRIBUTION DEVICE
Replace distribution devices with the same type and rating. Refer
to System Application Guide SAG582137200 for part numbers.
Replacing a GMT Distribution Fuse
Procedure
1.
Refer to
and replace the fuse. Ensure a safety
fuse cover is installed on the replacement fuse, as shown
in
2.
Verify no alarms are active.
Replacing a Bullet Nose Circuit Breaker
Procedure
1.
Operate the defective circuit breaker to the OFF position.
2.
Gently rock the defective circuit breaker back and forth
while pulling firmly outward until the breaker is free from
the distribution unit.
3.
Ensure that the replacement circuit breaker is in the OFF
position, and is of the correct rating.
4.
Orient the replacement circuit breaker as shown in
. Insert the terminals on the rear of the
circuit breaker into their corresponding sockets on the
distribution unit. Ensure the alarm contact on the back of
the circuit breaker makes contact with the alarm terminal
on the distribution unit. Push distribution device in firmly
until fully seated in the distribution unit.
5.
Operate the replacement circuit breaker to the ON
position.
6.
Verify no alarms are active.
Danger
