Charging Refrigerant; Refrigerant Charge Amount Requirements; Precharging Refrigerant - Huawei NetCol8000-E220 User Manual

NetCol8000-E220 Modular Indirect Evaporative
Cooling System
User Manual

5.7 Charging Refrigerant

5.7.1 Refrigerant Charge Amount Requirements

The NetCol8000-E220 has dual compressor systems. The following table uses one
system as an example.
Table 5-5 Refrigerant charge amount
Model
Precharge amount
before delivery
Onsite charge
amount
Total charge
amount

5.7.2 Precharging Refrigerant

Prerequisites
● The NetCol8000-E220 has dual compressor systems. Charge refrigerant for the
systems one by one or at the same time. The following figure uses one system
as an example.
● When charging refrigerant, you are advised to use a safety valve to prevent
refrigerant leakage during the removal of the rubber hose, which may cause
frostbite.
● Wear antifreeze gloves when performing refrigerant related operations.
● Charge the refrigerant (R410A) immediately after checking that the cooling
system does not leak.
● Before starting the compressor, ensure that the unit switch is turned on.
● Remove the refrigerant cylinder after ensuring that no more refrigerant needs
to be charged.
● Charge refrigerant to the standard amount. Otherwise, the devices may be
damaged.
Issue 10 (2024-01-30)
NetCol8000-
E220DM0AA
4.7 kg (single
compressor system)
0 kg (You do not need to
perform
Precharging
Refrigerant.)
4.7 kg (single
compressor system)
CA UTION
Copyright © Huawei Digital Power Technologies Co., Ltd.
NetCol8000-E220DM0BA
6 kg (single compressor
system)
2 kg (single compressor
5.7.2 system)
8 kg (single compressor
system)
5 Power-On and Commissioning
114