NetCol5000-A020 Air Cooled In-row Precision Air
Conditioner
User Manual
4 Power-On Commissioning
Issue 01 (2014-06-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
70
Step 6
Tap
Off
of the liquid solenoid valve in
Diagnostic mode
and reset the liquid solenoid valve.
Step 7
Tap
On
of the hot gas bypass valve in
Diagnostic mode
.
You will hear a loud sound from the hot gas bypass valve after its status turns to
On
.
Step 8
Tap
Off
of the hot gas bypass valve in
Diagnostic mode
and reset the hot gas bypass valve.
Step 9
Enter 50% in indoor fan control, and tap
On
of the electric heater.
1.
Check whether the indoor fans run properly and no false feedbacks and alarms exist.
2.
Wait for a period until a hot air is exhausted by fans 6 and 7 (fan from top to bottom is 1
to 8), which indicates that the electric heater works properly. Tap
Off
of the electric
heater, and enter 0% in indoor fan control.
Step 10
Enter 50% in humidifier control, and tap
On
of the compressor. The liquid solenoid valve and
indoor fans start automatically. The outdoor fans start only when the condensate pressure
reaches 2.26 MPa or higher.
After the compressor is powered on, start the crankcase heat tape and wait for 12 hours before
starting the compressor.
1.
Check whether the indicator of the power module is on.
2.
The water inlet valve YV4 opens automatically (you can hear water flow sound) to fill
water into the humidifier cylinder. When the water level reaches the preset threshold,
YV4 closes automatically. The electrode in the humidifier cylinder heats the water and
turns water into steam. In this process, check that whether any leakage is found on the
water inlet pipes.
3.
After confirming that the humidifier works properly, press the manual drainage button
on one side of the electric control box to "I" to forcibly drain water out of the humidifier
cylinder. In this process, ensure that no leakage is found on the drainpipes and the
thermal insulation foam of the evaporator pan and pipe is fixed properly.
4.
If no problem is found, press the manual drainage button to "O".
5.
Charge refrigerant into the system from the low-pressure needle valve slowly according
to the measured amount in
4.2.1 Calculation Requirements of Chilled Oil and
Refrigerant to Be Charged
.
6.
Remove the refrigerant charge device and install the valve bonnet after commissioning.
7.
After the commissioning, tap
Off
in
Diagnostic mode
to shut down the compressor.
Enter 0% in humidifier control.
Step 11
After commissioning is complete, choose
Maint
>
Diagnostic mode
>
Exit
from the main
menu, and tap
Shutdown
on the main screen.
----End
