Electric Control System - Huawei NetCol8000-A Series User Manual

NetCol8000-A(050, 100) In-room Air Cooled Smart
Cooling Product
User Manual
Rotate the adjustment screw rod within one circle each time. About 30 minutes are required to
achieve a new balance.
Sight Glass
Maintain the sight glass as follows:
1.
2.
Refrigerant Pipe
Maintain the refrigerant pipe as follows:
1.
2.

6.1.8 Electric Control System

Table 6-7 Maintenance items for the electrical control system
No.
1
2
3
4
5
Issue 10 (2019-01-15)
Check the sight glass. If the ground color is yellow, the cooling system contains
excessive water and requires maintenance.
If you find air bubbles with the sight glass, the cooling system lacks refrigerant. Adjust
the expansion valve or fill in refrigerant.
Check that the thermal insulator on the refrigerant pipe is not damaged.
Check that the refrigerant pipe support is intact and securely installed.
Operations
Check and secure all circuit cables, and ensure
that all wiring terminals are securely tightened.
Ensure that each plug has proper contact.
Check that each input and output connector
between the main control board and the display
panel has proper contact, as well as the
connection between the main control board and
the temperature and humidity sensor.
Check that the main control board is properly
connected to each contactor, electric heater
temperature switch, dry heating protection
temperature switch of the infrared humidifier
water pan, filter clogging switch, and fan
airflow loss switch.
Use a brush or compressed dry air to clean
various electric components, control
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6 System Operation and Maintenance
Troublesho Remarks
oting
Secure the Perform the
cables and operations
terminals. with the
power off.
Connect the Perform the
plug again. If operations
the fault is with the
power off.
not rectified,
replace the
plug.
Connect the Perform the
cables again. operations
with the
power off.
Connect the Perform the
cables again. operations
with the
power off.
N/A Perform the
operations
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