FusionModule1000B Air-Cooled IT Solution
Maintenance Guide
6 Parts Replacement
Issue 02 (2017-01-10)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
158
Figure 6-79
Removing a heat detector
Step 3
Remove cables from the base using a Phillips screwdriver.
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.
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.
If the red indicator blinks once every 6s, the heat detector is working properly.
----End
Follow-up Procedure
Dispose of the removed heat detector that is confirmed faulty.
6.5.3 Replacing Warning Signs (CE)
Prerequisites
A warning sign indicator needs to be replaced.
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.