Charging The Remaining Refrigerant - Huawei NetCol8000-E220 User Manual

NetCol8000-E220 Modular Indirect Evaporative Cooling
System
User Manual
Step 5 On the Offline Activation screen, enter Bar code and Verification code, which are available
on the home screen of the ACC shown in
startup password.
Step 6 Tap Password on the home screen of the ACC and enter the generated startup password in
the displayed dialog box.
Step 7 After you power on the smart cooling product, the screen displays the home screen.
----End

4.6 Charging the Remaining Refrigerant

Prerequisites
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

Procedure
Step 1 Tap Start 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 Commission the compressor by setting the compressor rotational speed to 3000 rpm.
1.
2.
3.
4.
Table 4-10 Proper system values (when the compressor is 3000 rpm)
Ambient
Temperat
ure
< 15° C
Issue 02 (2019-10-10)
If startup verification fails (when you do not enter the password within 5 min or the password you enter
is incorrect), the generated password will be invalid for the sake of security. The initial startup
verification fails.
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.
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.
On the home screen, choose Running > Device Details > Compressor and check that
the value of Suction pressure and Discharge pressure are in a range listed in the
following table.
On the home screen, choose Running > Device Details > EEV and check that the value
of EEV suction superheat degree is in a range listed in the following table.
On the Diagnostic Mode screen, Change the input value for the compressor to 0 rpm.
Proper Discharge
Pressure Range
1.5–2.5 MPa
Copyright © Huawei Technologies Co., Ltd.
4 Power-on and Commissioning
Figure 4-19. Tap Generate PWD to generate a
Proper Suction
Pressure Range
0.7–1.2 MPa
Proper
Overheating
Degree
8–15° C
95