NetCol5000-A021 In-row Air Cooled Smart Cooling
Product
User Manual (208 V)
5 Power-On Commissioning
Issue 03 (2020-01-10)
Copyright © Huawei Technologies Co., Ltd.
141
If no manual operation is performed within 25s after you tap
Start
, the equipment will automatically run
following the preset logic, and the compressor and indoor and outdoor fans will also run according to the
environment.
After the compressor is powered on, ensure that the electric heating belt of the crankcase has
been heated for more than 12 hours before starting the compressor.
Step 4
(This step is required only when the signal cable connects to the RS485 port.) Modify the
input value of
Outdoor fan
to 50%. Then modify it to 0% after checking that the
outdoor fan
runs properly and no alarm is generated.
Step 5
On the
Diagnostic Mode
screen, change the value for
Indoor fan
to 50% and tap
On
for the
electric heater.
1.
Check whether the indoor fans run properly and no alarm is generated.
2.
If hot air blows out from the exhaust vent of the fan after a period, the electric heater
runs properly. In this case, tap
OFF
for the electric heater and set the value for
Indoor
fan
to 0%.
Step 6
Commission the compressor by setting the compressor rotational speed to 3000 rpm.
1.
On the home screen, choose
Running
>
Device Details
>
Compressor
and check that
the value of
Suction pressure
is in the range of 0.7–1.2 MPa and the value of
Discharge
pressure
is in a range listed in the following table.
Table 5-2
Normal discharge pressure ranges
Outdoor Ambient Temperature
Normal Discharge Pressure Range
Below 15°C
1.5–2.5 MPa
15–35°C
1.5–3.1 MPa
35–45°C
2.5–3.8 MPa
2.
On the home screen, choose
Running
>
Device Details
>
EEV
and check that the value
of
EEV suction superheat degree
is in the range of 8–15°C.
3.
Charge the rest of the refrigerant from the low-pressure pipe needle valve in small flow
or intermittently if possible. The total amount of charged refrigerant must meet the
requirements in
5.2.1 Requirements of Refrigerant and Refrigerant Oil to Be Charged
4.
Choose
Maint
>
Diagnostic Mode
>
Enter
, set the input volume for the compressor to
0 rpm.
If the suction pressure, discharge pressure, and suction overheating degree is without normal ranges,
check and make sure that:
1.
Charge refrigerant in an amount exactly as standard charge required.
2.
The air inlet and outlet of outdoor unit are without block.
If the problem remains unresolved after troubleshooting, please contact Huawei technical support.
Summary of Contents for NetCol5000-A021
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