Replacing An External Horn Strobe (Ce) - Huawei FusionDC1000A Maintenance Manual

FusionDC1000A Prefabricated All-in-One Data
Center
Maintenance Guide (IT Scenario)
Step 7 Check that the new horn strobe is working properly.
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4.5.5 Replacing an External Horn Strobe (CE)

Prerequisites
A spare horn strobe is available and functional.
Impact on the System
The fire extinguishing system stops working during the replacement.
Preparations
Tools: Phillips screwdriver, step ladder
Materials: spare horn strobe, key to the control box
Documents: fire extinguishing drawings and parameters
Skill requirement: fire engineer
Before replacing the horn strobe, inform the related administrative department of
the temporary downtime of the fire control 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 Rotate the horn strobe cover counterclockwise and remove it.
Issue 01 (2021-04-20)
Disconnect the wiring terminals from the electrical actuator on the fire
cylinder.
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 to Enable Control counterclockwise (rightward). Reset the
extinguishant control panel by pressing Reset on it. Then, reset key to Enable
Control clockwise (leftward).
NO TICE
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4 Parts Replacement
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