FusionModule1000A40 ICT Solution
Maintenance Guide
4 Parts Replacement
Issue 01 (2019-03-05)
Copyright © Huawei Technologies Co., Ltd.
148
Figure 4-94
Removing a smoke sensor
Step 3
Remove cables from the base using a Phillips screwdriver.
As a terminal resistor is connected to the last smoke detector in the loop in parallel, remove the terminal
resistor from the faulty smoke detector, and connect the resistor to the new smoke detector when you
replace the smoke detector.
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 smoke 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 smoke detector is working properly.
If the red indicator blinks once every 6s, the smoke detector is working properly.
----End
Follow-up Procedure
Dispose of the removed smoke detector that is confirmed faulty.
4.4.2.2 Replacing a Heat Detector (CE)
Prerequisites
A spare heat detector of the same model is available and functional.
Impact on the System
The fire extinguishing system stops working during the replacement.