Replacing Warning Signs (Ce) - Huawei FusionModule1000A20 Maintenance Manual

FusionModule1000A20 CT Solution
Maintenance Guide
Figure 5-35 Removing a heat detector
Step 3 Remove cables from the base using a Phillips screwdriver.
Step 4 Remove the screws on the base using a Phillips screwdriver, and remove the base.
Step 5 Install the new base to 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.
Step 7 Switch on the input circuit breaker of the extinguishant control panel, and connect the cables
to the battery.
Step 8 Check whether the new heat detector is working properly.
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Follow-up Procedure
Dispose of the removed heat detector that is confirmed faulty.

5.4.1.3 Replacing Warning Signs (CE)

Prerequisites
A spare warning sign indicator of the same model is available and functional.
Impact on the System
The fire extinguishing system stops working during the replacement.
Issue 01 (2019-02-25)
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.
If the red indicator blinks once every 6s, the heat detector is working properly.
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