Replacing An Internal Fire Alarm Horn/Strobe - Huawei FusionDC1000A Maintenance Manual

FusionDC1000A Prefabricated All-in-One Data
Center
Maintenance Guide (IT Scenario)
Step 3 Remove the two cables using a Phillips screwdriver.
Step 4 Install the base of the new fire alarm horn/strobe in the same position.
Step 5 Connect cables in the same way to the correct poles.
Connect the red cable to the 24V+ terminal, and connect the black cable to the GND terminal.
Step 6 Install the top cover of the fire alarm horn/strobe.
Step 7 Switch on the active and standby power supplies to the fire alarm control panel,
and check that the new fire alarm horn/strobe is working properly.
Unlock the keyboard of the fire alarm control panel, and press the HORN/STROBE key to
trigger the fire alarm horn/strobe.
----End
Follow-up Procedure
Dispose of the removed fire alarm horn/strobe that is confirmed faulty.

4.4.7 Replacing an Internal Fire Alarm Horn/Strobe

Prerequisites
A spare fire alarm horn/strobe of the same model is available and functional.
Impact on the System
The fire extinguishing system stops working during the replacement.
Prerequisites
Tools: Phillips screwdriver, step ladder
Material: spare fire alarm horn/strobe
Documents: fire extinguishing drawings and parameters
Skill requirement: fire engineer
Before replacing the fire alarm horn/strobe, 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.
Issue 01 (2021-04-20)
NO TE
When removing cables, clearly label the cables with its corresponding terminal ports.
NO TE
NO TE
NO TICE
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4 Parts Replacement
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