Replacing The Driver - Huawei NetCol8000-E220 User Manual

NetCol8000-E220 Modular Indirect Evaporative Cooling
System
User Manual
Step 11 Check that the phase sequences are correct before starting the system. Then choose Maint >
Diagnostic Mode > Enter to check the system pressure and temperature and ensure the
refrigerant is charged with an optimal system status. Ensure that the system is running
normally without alarms.
Step 12 Close the no.2nd maintenance door.
Step 13 Power on the device. On the LCD home screen, choose Maint > Performance Maint and
clear the compressor runtime.
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6.5.5 Replacing the Driver

Prerequisites
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Context
Before checking and maintaining the device, ensure that the primary power supply to the
device is disconnected and the drive has been placed without primary power supply for 10
minutes. Otherwise, electric shocks may occur.
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.2nd maintenance door and enter the device.
Step 3 Remove all cables from the driver and cut the cable ties using diagonal pliers.
Step 4 Remove cables.
Step 5 Remove the four screws on the driver using a Phillips screwdriver, and pull out the driver.
Issue 02 (2019-10-10)
The driver needs to be replaced.
A spare driver of the same model is available and functional.
Tools: Phillips screwdriver, diagonal pliers, cable tie.
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