Context
● When charging refrigerant, you are advised to use a safety valve to prevent
refrigerant leakage during the removal of the leather hose, which may cause
frostbite.
● Wear antifreeze gloves when performing refrigerant-related operations.
● Charge refrigerant (R410A) right after checking that the cooling system does
not leak and the vacuum level meets the requirements.
Procedure
Step 1 Remove the vacuum pump from the vacuumizing equipment, and replace the
vacuum pump with a refrigerant cylinder, as shown in Figure 6-9 or Figure 6-13.
Figure 6-9 NetCol8000-A045/A055/A090 precharging refrigerant into the system
without a low-temperature component
(downow)
(1) Refrigerant cylinder
(2) Electronic scale (3) Pressure gauge
(4) Connection nut (5) Low-pressure needle valve (6) Exhaust pipe needle valve
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. 163
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