Figure 6-16 NetCol8000-A060 precharging refrigerant into the system with a low-
temperature component (upow)
(1) Refrigerant cylinder (2) Electronic scale (3) Pressure gauge 1 (4) Pressure gauge 2
(5) Connection nut (6) Low-pressure
needle valve
(7) Exhaust pipe
needle valve
(8) Liquid pipe needle
valve
Step 2 Slightly open the refrigerant cylinder valve and loosen the connection nut of the
pressure gauge. Tighten the nut when cold air escapes out of the nut.
Step 3 Put the refrigerant cylinder upside down on the electronic scale. Clear the reading
on the balance.
If the R410A refrigerant is provided by Huawei, put the refrigerant steel vessel
upside down when charging in the refrigerant. If the refrigerant is not provided by
Huawei, check with the refrigerant provider whether the steel vessel has a siphon.
If the vessel has a siphon, do not put it upside down when charging refrigerant. If
the vessel has no siphon, put it upside down when charging refrigerant. These
measures ensure that the refrigerant is charged in the liquid form.
Step 4 Open all pressure gauge valves and the refrigerant cylinder valve to charge
refrigerant.
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. 167
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