Replacing An Extinguishant Abort Button (Ce) - Huawei FusionDC1000A Maintenance Manual

FusionDC1000A Prefabricated All-in-One Data
Center
Maintenance Guide (IT Scenario)
Figure 4-101 Removing a fire alarm bell
Step 3 Remove the cables from the fire alarm bell.
Step 4 Remove screws from the fire alarm bell base using a Phillips screwdriver, and
remove the base.
Step 5 Install the new base in the same way, connect the cables, and install the cover.
Step 6 Switch on the input circuit breaker of the extinguishant control panel, and connect
the battery cables.
Step 7 Check whether the new fire alarm bell is working properly.
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2.
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4.5.7 Replacing an Extinguishant Abort Button (CE)

Prerequisites
A spare extinguishant abort button of the same model is available and functional.
Impact on the System
The fire extinguishing system stops working during the replacement.
Issue 01 (2021-04-20)
NO TE
As a terminal resistor is connected to the last fire alarm bell in the loop in parallel, remove
the terminal resistor from the faulty fire alarm bell, and connect the resistor to the new fire
alarm bell when you replace the fire alarm bell.
Flip the key to Enable Control rightward, and set the access level of the
extinguishant control panel to 2.
Press Silence/Sound Alarm to start or abort the fire alarm bell.
NO TE
If the alarm bell starts and aborts normally, and rings loud and clear when it is started, the
alarm bell is working properly.
Reset the key to Enable Control by flipping it leftward.
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4 Parts Replacement
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