Charging The Remaining Refrigerant; Startup Wizard - Huawei NetCol5000-A User Manual

NetCol5000-A 42 kW Air Cooled In-row Precision Air
Conditioner
User Manual

4.7 Charging the Remaining Refrigerant

Prerequisites
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Procedure
Step 1 Charge refrigerant on the basis of the precharging.
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Step 2 On the home screen, choose Running > Device Details > Compressor, and view Suction
pressure and Discharge pressure to determine whether they are within normal ranges. The
normal suction pressure range is 0.7–1.2 MPa.
range. Choose Running > Device Details > EEV, and view the EEV suction overheating
degree. The normal overheating degree should be in the range of 8–15° C.
Table 4-12 Normal discharge pressure ranges
Ambient Temperature
< 15° C
15–35° C
35–45° C
> 45° C
Step 3 After charging refrigerant, close all valves.
----End

4.8 Startup wizard

Prerequisites
Check that refrigerant is fully charged before performing the wizard startup.
Issue 01 (2017-07-27)
Check that the outdoor unit switch is turned on before you start the compressor.
Remove the refrigerant steel vessel after checking that no more refrigerant is required.
Charge refrigerant in an amount exactly as required by
Otherwise, the devices may be damaged.
If there are no low-temperature components, open the low-pressure valve of the pressure
gauge, and charge the remaining refrigerant from the low-pressure needle valve in small
flow or intermittently, as shown in
If there are low-temperature components, open the low-pressure valves of pressure gauge
1 and pressure gauge 2, and charge the remaining refrigerant from the low-pressure
needle valves in small flow or intermittently, as shown in
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4.1.1 Refrigerant Charge
Figure 4-3.
Figure
Table 4-12 lists the proper discharge pressure
Discharge Pressure Range
1.5–2.5 MPa
1.5–3.1 MPa
2.5–3.8 MPa
3.1–4.15 MPa
4 Commissioning
Amount.
4-4.
118