User's Manual

Installation, Operation and Service Manual 90DIB500R41IM_FCC02 – 99.1 193
DIB-500 R4.1 Component replacement
Replacing components of the VAC and alarm system expansion – optional
Table 11.23 provides an overview of replacement components of the V
AC
and the alarm
system expansion.
11.8.1 Replacing rectifier modules
The rectifier module is a hardware subcomponent of the power supply unit and used for
converting alternating-current voltage (V
AC
) into direct-current voltage (V
DC
).
The tasks listed in the following table must be performed to replace the rectifier mod-
ules.
11.8.1.1 Uninstalling rectifier modules
The rectifier module is secured to the mounting frame with a fastening screw.
Remove the rectifier module as follows:
Preparation:
✓ The preparatory measures must be completed, refer to Table 11.24 on page 193.
✓ The tools and aids must be available, refer to section 11.2.6 on page 174.
Table 11.23 Overview of replacement components (V
AC
and alarm system expansion)
Replacement component Replacement is described
in
Rectifier module Section 11.8.1 on page 193
SC200 (the SC200 must always be replaced together with the
mounting frame)
Section 11.8.2 on page 196
Table 11.24 Overview of the tasks to be performed (Replacing rectifier modules)
Tasks/work steps Described in
Preparatory measures Temporary service interruption Section 8.1 on
page 163
Uninstalling rectifier modules Section 11.8.1.1 on
page 193
Installing rectifier modules Section 11.8.1.2 on
page 195
Concluding tasks Recommissioning after a temporary service
interruption
Section 9.1 on
page 167