Huawei NetCol5000-A035 Quick Manual page 22

Amount of refrigerant to be charged for the NetCol5000-A025
Refrigerant Actual length of
Charge Amount the one-way
pipe(L)
Standard charge
0 m < L ≤ 10 m
amount (kg)
Refrigerant
10 m < L ≤ 100
charge (kg) = m
Standard charge
+ Additional
charge
Scenarios without a low temperature component
• On the left is the low pressure gauge. On the right is the high
pressure gauge.
• The specification of needle valves is 7/16-20UNF.
Discharge
pipe needle
valve
NetCol500- NetCol500-
A040 A040 including
a low
temperature
component
8.6 32.7
8.6 + (L - 10) x 32.7 + (L - 10)
0.17 x 0.19
Low-pressure
needle valve
Valve Valve
Nut
22
NetCol500-
A060/A120
9.4
9.4 + (L - 10) x
0.18
1. Leak checking
2. Vacuuming
3. Precharging refrigerant
Reducing
valve
Electronic
scale
NetCol500-
A060/A120
including a low
temperature
component
34
34 + (L - 10) x
0.18
Vacuum
pump
Refrigerant
cylinder