SmartACBox 12-In 1-Out Smart AC Combiner Box
User Manual
7 Maintenance
Issue 03 (2018-05-15)
Copyright © Huawei Technologies Co., Ltd.
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7.2.4 Replacing the RS485 Signal SPD
Prerequisites
The RS485 signal SPD is faulty.
A spare SPD of the same model is available and functional.
Procedure
Step 1
Disconnect cables from the faulty RS485 signal SPD and label the cables.
Step 2
Remove the faulty RS485 signal SPD.
Figure 7-7
Removing a faulty RS485 signal SPD
Step 3
Install the new RS485 signal SPD.
Step 4
Connect the cables to the RS485 signal SPD based on the cable labels.
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7.2.5 Replacing the Power SPD
Prerequisites
The power SPD is faulty.
A spare power SPD of the same model is available and functional.
If an SPD is damaged or its indication window is displayed in red, replace the SPD because it has failed.
Context
A power SPD consists of a surge protection module and a base.
Procedure
Step 1
Remove the faulty surge protection module from the power SPD.