Huawei FusionModule 1000A20 Maintenance Manual page 78

FusionModule1000A20 Prefabricated All-in-One Data
Center
Maintenance Guide
Document: fire extinguishing device layout diagram (CE)
Skill requirement: fire engineer
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Figure 4-37 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 Move the new fire cylinder using a pallet truck to a position near the pre-fab. module door.
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Step 3 Disconnect the interconnection terminals on the electrical actuator from the extinguishant
control panel. Remove the electrical actuator by rotating it counterclockwise.
Step 4 Disconnect the fire cylinder and fire extinguishing pipeline.
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2.
Issue 01 (2019-07-15)
For the diagram, see the initial configuration parameter manual for the solution in use.
Before replacing the fire cylinder, 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 fire cylinder 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.
Do not impact or strike the fire cylinder during transportation or installation.
Assign sufficient people for transportation and installation if no auxiliary tool is available.
Remove the high-pressure hose.
Remove the I-shaped connection pipe.
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4 Parts Replacement
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