Huawei FusionModule1000A20 Maintenance Manual page 113

FusionModule1000A20 CT Solution
Maintenance Guide
Impact on the System
The fire extinguishing system stops working during the replacement.
Preparations
Tools: protective gloves, step ladder, Phillips screwdriver
Materials: spare heat detector
Document: fire extinguishing device layout diagram (CE)
Skill requirement: fire engineer
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Figure 5-34 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 Hold the heat detector, and rotate it counterclockwise to remove it from the base.
Issue 01 (2019-02-25)
For the diagrams, see the initial configuration parameter manual for the solution in use.
Before replacing the heat fire detector, 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 heat detector 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
106