6.7 Charging the Remaining Refrigerant
Prerequisites
●
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 standard charge required.
Otherwise, the devices may be damaged.
Procedure
Step 1 Tap Startup on the home screen.
Step 2 Choose Maint > Diagnostic Mode > Enter to enter the diagnostic mode.
Step 3 Set the compressor to 3000 rpm.
Step 4 Perform the following operations on the basis of refrigerant precharging.
1. 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 requirements of refrigerant to be
charged.
2. On the home screen, choose Running > Device Details > Compressor and
check that the values of Suction pressure and Discharge pressure are in
their proper ranges.
3. On the home screen, choose Running > Device Details > EEV and check that
the value of EEV suction superheat degree is in the proper range.
4. On the Diagnostic Mode screen, Change the input value for the compressor
to 0 rpm.
CA UTION
Charge refrigerant by referring to the manual and check whether the system
value is proper.
Table 6-4 Proper system values (when the compressor is 3000 rpm)
Ambient
Temperature
Proper
Discharge
Pressure Range
Proper Suction
Pressure Range
Proper
Overheating
Degree
< 15°C
1.5–2.5 MPa
0.7–1.2 MPa
8–15°C
15–35°C
1.5–3.1 MPa
35–45°C
2.5–3.8 MPa
NetCol8000-A(045, 055, 060, 090, 120) In-room Air
Cooled Smart Cooling Product
User Manual
6 Power-On Commissioning
Issue 05 (2020-10-10)
Copyright © Huawei Technologies Co., Ltd.
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