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FusionModule1000A20 Prefabricated All-in-One Data
Center
Maintenance Guide
4 Parts Replacement
Issue 01 (2019-07-15)
Copyright © Huawei Technologies Co., Ltd.
66
Step 3
Remove the cables from the fire alarm bell.
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.
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.
1.
Flip the key to
Enable Control
rightward, and set the access level of the extinguishant
control panel to 2.
2.
Press
Silence/Sound Alarm
to start or abort the fire alarm bell.
If the alarm bell starts and aborts normally, and rings loud and clear when it is started, the alarm bell is
working properly.
3.
Reset the key to
Enable Control
by flipping it leftward.
----End
4.4.7 Replacing the 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.
Preparations
Tools: Phillips screwdriver, protective gloves
Materials: spare extinguishant abort button
Document: fire extinguishing device layout diagram (CE)
Skill requirement: fire engineer