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

FusionDC1000A Prefabricated All-in-One Data
Center
Maintenance Guide (IT Scenario)
Step 2 Loosen the screws securing the warning sign and its base using a Phillips
screwdriver, and remove the cover of the warning sign.
Figure 4-97 Removing screws
Step 3 Remove the cables from the warning sign, and label the cables.
Step 4 Remove the screws on the base using a Phillips screwdriver, and remove the base.
Step 5 Install the new warning sign base in the same way, and connect the cables.
Step 6 Install the warning sign cover.
Step 7 Switch on the input circuit breaker of the extinguishant control panel, and connect
the battery cables.
Step 8 Check whether the new warning sign is working properly.
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4.5.4 Replacing an Internal Horn Strobe (CE)

Prerequisites
A spare horn strobe of the same model 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
Documents: fire extinguishing drawings and parameters
Issue 01 (2021-04-20)
Open the cover of the pneumatic switch. Press the test button on the
pneumatic switch to short-circuit the cables inside to simulate an
extinguishant release and trigger the warning sign.
NO TE
If the warning sign turns on, the warning sign is working properly.
Flip the key Enable Control rightward. Reset the extinguishant control panel
by pressing Reset on it. Then, reset the key Enable Control leftward.
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4 Parts Replacement
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