Huawei FusionModule1000A40 Maintenance Manual page 130

FusionModule1000A40 Prefabricated All-in-One
Data Center
Maintenance Guide
Impact on the System
The fire extinguishing system stops working during the replacement.
Prerequisites
Tools: Phillips screwdriver, protective gloves, step ladder
Material: spare warning sign
Document: fire extinguishing device layout diagram (CE)
Skill requirement: fire engineer
Before replacing the warning signs, inform the related administration department
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 Loosen the screws securing the warning sign and its base using a Phillips
screwdriver, and remove the cover of the warning sign.
Figure 5-69 Removing the screws
Step 3 Remove the cables from the warning sign, and label the cables.
Step 4 Remove the screws on the base using a Phillips screwdriver, and remove the base.
Step 5 Install the new warning sign base in the same way, and connect the cables.
Step 6 Install the warning sign cover.
Step 7 Switch on the input circuit breaker of the extinguishant control panel, and connect
the battery cables.
Step 8 Check that the new warning sign is working properly.
1.
Issue 04 (2021-02-10)
NO TICE
Pull up the reset button on the pneumatic switch to short-circuit the cables
within to simulate a warning sign.
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5 Parts Replacement
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