Replacing The Switch; Replacing The Contactor - Huawei NetCol8000-E220 User Manual

NetCol8000-E220 Modular Indirect Evaporative
Cooling System
User Manual
Step 5 After powering on the device, choose Maintenance > Performance Maintenance
on the home screen to clear the running time of the spray pump.
Step 6 Tap Startup on the home screen. Ensure that the device is running normally
without any alarms.
----End

6.5.8 Replacing the Switch

Prerequisites
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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 door of the electric control box.
Step 3 Remove the cables routed from the top and bottom to the faulty switch using a
Phillips screwdriver.
Step 4 Remove the end fastener near the faulty switch on the guide rail, push the faulty
switch upward and pull it outward to remove the faulty switch.
Step 5 Clamp the buckle at the lower part of the new switch to the guide rail, and push
the switch upward and press it inward to install it properly.
Step 6 Install the end fastener and reconnect the cables to the switch.
Step 7 Close the door of the electric control box.
Step 8 Power on the device and tap Startup on the home screen. Ensure that the device is
running normally without any alarms.
----End

6.5.9 Replacing the Contactor

Prerequisites
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Issue 06 (2020-08-19)
The switch needs to be replaced.
A spare switch is available and functional.
Tool: Phillips screwdriver
NO TICE
The AC contactor (Figure 3-32
be replaced.
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
(Figure 3-32 shows the position of switch.)
shows the position of AC contactor) needs to
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