Parts Replacement; Replacement Requirements; Replacing Components In The Electrical Control Box - Huawei NetCol5000-C User Manual

NetCol5000-C Chilled Water-Cooled In-Row Precision
Air Conditioner
User Manual

6.5 Parts Replacement

6.5.1 Replacement Requirements

Remove the cabinet front or rear door when replacing a component in the cabinet.
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6.5.2 Replacing Components in the Electrical Control Box

The control function of the NetCol5000-C is unavailable.
Prerequisites
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Context
Recommended tool: Phillips screwdriver
Preparations: remove the rear door, and power off the electrical control box.
Procedure
Step 1 Remove the rear door and air filters, remove the protective panel of the electrical control box,
remove all the terminals on the side panels, loose two screws at the upper part of the electrical
control box, as shown in
the guide rails, and place it on the floor.
Step 2 Loosen the screws on the electrical control box cover manually and remove the fault
component.
Step 3 Replace the component.
Step 4 Connect cables.
Issue 02 (2013-12-10)
Ensure that a spare component is the same model as the faulty one is prepared before
replacing the faulty component.
Before removing cables from a faulty component, mark the cables with their
corresponding ports numbers for later connection.
Ensure that the cables are connected to the spare component properly.
Do not install or remove power cables when the device is on. Transient contact between
the core of the power cable and the conductor may generate electric arcs or sparks, which
may cause fire or hurt eyes.
Before installing or removing the power cable, turn off the power switch.
Before connecting a power cable, check that the label on the power cable is correct.
During the installation of AC power supply facilities, follow the local safety regulations.
When operating the high-voltage and AC-powered facilities, use dedicated tools.
Components in the electrical control box, including the controller, AC contactor,
transformer, fuse, or fuse holder need to be replaced.
A spare and functional component is available.
Figure
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6-2, pull the electrical control box upwards, pull it out along
6 System Operation and Maintenance
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