FusionModule1000A20 Prefabricated All-in-One Data
Center
Maintenance Guide
4 Parts Replacement
Issue 01 (2019-07-15)
Copyright © Huawei Technologies Co., Ltd.
65
4.4.6 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 horn strobe
Document: fire extinguishing device layout diagram (CE)
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.
Figure 4-31
Removing a fire alarm bell