Huawei FusionModule1000A20 Maintenance Manual page 115

FusionModule1000A20 CT Solution
Maintenance Guide
Preparations
Tools: Phillips screwdriver, protective gloves, step ladder
Materials: spare warning sign indicator
Document: fire extinguishing device layout diagram (CE)
Skill requirement: fire engineer
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Figure 5-36 Position of the 2ND STAGE NO terminal
Procedure
Step 1 Disconnect the battery cables, and switch off the input circuit breaker of the extinguishant
control panel.
Step 2 Loosen the screws securing the warning sign and its base using a Phillips screwdriver, and
remove the cover of the warning sign.
Issue 01 (2019-02-25)
For the diagrams, see the initial configuration parameter manual for the solution in use.
Before replacing the warning signs indicator, inform the related administrative
departments of the temporary downtime of the fire extinguishing system. In addition,
remove the cable connected to the 2ND STAGE NO terminal on the extinguishant control
panel to disable the linkage control function. After the warning signs indicator is replaced,
reconnect the cable to the 2ND STAGE NO terminal on the extinguishant control panel to
enable the linkage control function, and inform the administrative departments that the
system has become operational.
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5 Parts Replacement
108