Huawei NetCol5000-A050 - Page 135

Figure 6-3 Precharging refrigerant when no low temperature component is
congured
(1) Refrigerant cylinder (2) Electronic scale (3) Pressure gauge
(4) Connection nut (5) Low-pressure needle valve (6) Exhaust pipe needle valve
Figure 6-4 Precharging refrigerant when a low temperature component is
congured
(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.
NetCol5000-A050 In-row Air Cooled Smart Cooling
Product
User Manual 6 Power-On Commissioning
Issue 08 (2021-09-17) Copyright © Huawei Technologies Co., Ltd. 125