Replacing The Differential Pressure Switch - Huawei NetCol8000-E220 User Manual

NetCol8000-E220 Modular Indirect Evaporative Cooling
System
User Manual

6.5.3 Replacing the Differential Pressure Switch

Prerequisites
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Context
The differential pressure switch needs to be maintained from the front of the fresh air filter
frame.
Procedure
Step 1 On the controller home screen, tap Shutdown, and turn off the device switch in the PDC.
Exercise caution because the device is still energized after it is shut down on the controller
home screen.
Step 2 Open the no. 3rd maintenance door.
Step 3 Enter the device.
Step 4 Remove the pressure inlet tube, as shown by (1) in
Figure 6-6 Removing the differential pressure switch
Issue 02 (2019-10-10)
The differential pressure switch needs to be replaced.
A spare differential pressure switch of the same model is available and functional.
Tool: Phillips screwdriver
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Figure 6-6.
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