Replacing Warning Signs (Ce) - Huawei FusionModule1000A40 Maintenance Manual

FusionModule1000A40 Prefabricated All-in-One
Data Center
Maintenance Guide
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 by hand, and rotate it counterclockwise to remove it from
the base.
Figure 5-68 Removing a heat detector
Step 3 Remove cables from the base.
Step 4 Remove the screws on the base using a Phillips screwdriver, and remove the base.
Step 5 Install the new base in the same position, and reconnect the cables.
Step 6 Insert the new heat detector into the base, and rotate it clockwise until it locks in
position.
Step 7 Switch on the input circuit breaker of the extinguishant control panel, and connect
the battery cables.
Step 8 Check that the new heat detector is working properly.
If the red indicator blinks once every 6s, the heat detector is working properly.
----End

5.4.2.3 Replacing Warning Signs (CE)

Prerequisites
A spare warning sign of the same model is available and functional.
Issue 04 (2021-02-10)
NO TE
As a terminal resistor is connected to the last heat detector in the loop in parallel, remove
the terminal resistor from the faulty heat detector, and connect the resistor to the new heat
detector when you replace the heat detector.
NO TE
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