Huawei NetCol8000-A Series User Manual page 91

NetCol8000-A(050, 100) In-room Air Cooled Smart
Cooling Product
User Manual
(1) Liquid pipe needle
valve
(4) Low pressure gauge
(6) Electronic balance
2.
3.
Step 4 Charge in refrigerant to the required amount or until no more refrigerant can be charged in,
and record the weight of charged refrigerant. The remaining refrigerant needs to be charged in
during power-on commissioning.
Step 5 Close the pressure gauge and the valve of the refrigerant cylinder after charging in refrigerant.
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Issue 10 (2019-01-15)
Figure 4-4 Charge refrigerant with installing low-temperature component
Open the valve on the refrigerant steel vessel to dispel air from the hose connected to the
vessel, and close the valve on the refrigerant steel vessel.
Record the weight reading on the electronic balance, open the valve on the refrigerant
steel vessel, open the high pressure valve and low pressure valve on the pressure gauge,
charging in 1 kg of refrigerant from the high-pressure side, and close the low pressure
valve.
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(2) Low pressure needle
valve
(5) High pressure gauge
(8) Low pressure gauge
4 Power-On Commissioning
(2) High pressure needle
valve
(6) Refrigerant cylinder
R410A
(9) High pressure gauge
82