SmartACU2000B smart array controller
User Manual (with PID modules, 800 V AC)
7 System Maintenance
Issue 05 (2019-01-20)
Copyright © Huawei Technologies Co., Ltd.
103
----End
7.3.14 Replacing the 24 V DC Input and Output Switches
Prerequisites
The 24 V DC input or output switch is faulty.
A spare 24 V DC input or output switch of the same model is available and functional.
Context
The 24 V DC input and output switches are replaced in the same manner. This section
describes how to replace a 24 V DC input switch.
Procedure
Step 1
Disconnect cables from the faulty 24 V DC input switch, and label the cables.
Step 2
Remove the faulty 24 V DC input switch.
Figure 7-20
Removing a faulty 24 V DC input switch
Step 3
Install the new 24 V DC input switch.
Step 4
Connect the cables to the new 24 V DC input switch based on the cable labels.
----End