Huawei FusionDC1000A Maintenance Manual page 138

FusionDC1000A Prefabricated All-in-One Data
Center
Maintenance Guide (IT Scenario)
Before replacing the fire alarm sounder, inform the related administration
department of the temporary downtime of the fire extinguishing system. After the
replacement, inform the administration department that the system has become
operational.
Procedure
Step 1 Switch off the active and standby power supplies to the fire alarm control panel.
Step 2 Push the fire alarm sounder out of the base.
Figure 4-74 Removing the fire alarm sounder
Step 3 Cut off the power cable of the fire alarm sounder, as shown in
Figure 4-75 Cutting off the power cable
Step 4 Connect the input wires with the two wires (polarity insensitive) of the spare fire
alarm sounder and wrap the connection points using insulation tape.
Cord end terminals are recommended if applicable.
Issue 01 (2021-04-20)
NO TICE
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Copyright © Huawei Technologies Co., Ltd.
4 Parts Replacement
Figure 4-75.
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