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

NetCol8000-E220 Modular Indirect Evaporative
Cooling System
User Manual
Step 6 Remove the six screws from the fan support and fan to separate the fan support
from the fan.
Figure 10-3 Removing the fan support
Step 7 Install a new fan, connect the wiring terminals, and bind the cables using cable
ties.
Step 8 Close the maintenance door.
Step 9 Power on the device.
Step 10 Tap Start on the home screen, choose Maintenance > Diagnostic Mode > Enter,
check that the exhaust fan works properly, and exit.
Step 11 Choose Maintenance > Performance Maintenance on the home screen and clear
the total runtime of the exhaust fan.
Step 12 Ensure that the unit is running properly without alarms.
----End

10.3 Replacing a Differential Pressure Switch

Prerequisites
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Context
The differential pressure switch needs to be maintained in the air return
compartment.
Issue 10 (2024-01-30)
A differential pressure switch needs to be replaced.
A spare differential pressure switch of the same model is available and
functional.
Tool: Phillips insulated torque screwdriver
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10 Parts Replacement
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