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

NetCol8000-E220 Modular Indirect Evaporative
Cooling System
User Manual
Step 12 Tap Startup on the home screen. Ensure that the device is running normally
without any alarms.
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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
outdoor intake air filter.
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 06 (2020-08-19)
The differential pressure switch needs to be replaced.
A spare differential pressure switch of the same model is available and
functional.
Tool: Phillips screwdriver
NO TICE
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Figure 6-6.
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