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FusionCol8000-E400 Modular Indirect Evaporative
Cooling System
User Manual
9.16 Replacing a Thermal Relay
Prerequisites
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Procedure
Step 1 On the home screen of the display module, tap Shutdown and turn off the device
switch in the PDF.
Exercise caution because the device is still energized after it is shut down on the
screen of the display module.
Step 2 Open the door of the electric control box.
Step 3 Remove the cables from the faulty thermal relay, loosen the screws on the
contactor connected to the thermal relay, and remove the faulty relay.
Step 4 Install the new relay on the contactor, tighten the screws, and install the cables.
Step 5 Close the door of the electric control box.
Step 6 Power on the device and tap Start on the home screen. Ensure that the device is
running normally without any alarms.
----End
9.17 Replacing a T/H Sensor
Prerequisites
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Issue 04 (2022-06-30)
A thermal relay needs to be replaced.
A spare thermal relay of the same model is available and functional.
Tool: Phillips screwdriver
NO TICE
A T/H sensor needs to be replaced.
A spare T/H sensor of the same model is available and functional.
Tools: Phillips screwdriver, scissors
The equipment has two T/H sensors, located on the outdoor air inlet side and
the indoor return air side. This chapter takes the replacement of the outdoor
air intake T/H sensor as an example to introduce the replacement method.
Copyright © Huawei Technologies Co., Ltd.
9 Parts Replacement
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