Huawei FusionModule1000A20 Maintenance Manual page 111

FusionModule1000A20 Prefabricated All-in-One
Data Center
Maintenance Guide
Skill requirement: fire engineer
Before replacing the warning signs, 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 Loosen the screws securing the warning sign and its base using a Phillips
screwdriver, and remove the cover of the warning sign.
Figure 6-26 Removing screws
Step 3 Remove the cables from the warning signs, 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 whether the new warning sign indicator is working properly.
1.
2.
3.
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Issue 03 (2022-12-15)
NO TICE
Pull up the reset button on the pneumatic switch to short-circuit the cables
within to simulate a warning sign.
NO TE
If the warning sign turns on, the warning sign is working properly.
Press the reset button on the pneumatic switch.
Flip the key to Enable Control counterclockwise (rightward). Reset the
extinguishant control panel by pressing Reset on it. Then, reset key to Enable
Control clockwise (leftward).
Copyright © Huawei Digital Power Technologies Co., Ltd.
6 Parts Replacement
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