Replacing A Fire Alarm Bell (Ce) - Huawei FusionDC1000A Maintenance Manual

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Maintenance Guide (IT Scenario)
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4.5.6 Replacing a Fire Alarm Bell (CE)

Prerequisites
A spare fire alarm bell of the same model is available and functional.
Impact on the System
The fire extinguishing system stops working during the replacement.
Preparations
Tools: hex key, Phillips screwdriver, protective gloves, step ladder
Materials: spare fire alarm bell
Documents: fire extinguishing drawings and parameters
Skill requirement: fire engineer
Before replacing the fire alarm bell, inform the related administrative departments
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 Disconnect the battery cables, and switch off the input circuit breaker of the
extinguishant control panel.
Step 2 Remove screws securing the fire alarm bell using a hex key, and remove the cover.
Issue 01 (2021-04-20)
NO TE
After the wiring terminals are disconnected from the electrical actuator, the extinguishant
control panel generates an alarm, which is normal.
Press the manual gas release button on the extinguishant control panel.
NO TE
That the horn strobe is triggered indicates that the horn strobe works properly.
Reset the manual gas release button.
Flip the key Enable Control counterclockwise (rightward). Reset the
extinguishant control panel by pressing Reset on it. Then, reset the key
Enable Control clockwise (leftward).
NO TICE
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4 Parts Replacement
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