Huawei NetCol500-A080 - Page 41

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Scenario Without a Low Temperature Component
(NetCol8000-A045 Upflow)
Nut
Reducing valve
Nitrogen cylinder
Electronic
scale
Refrigerant cylinder
Vacuum
pump
Low-pressure needle valve
Exhaust pipe
needle valve
1. Leak checking
2. Vacuuming
3. Precharging refrigerant
Scenario Without a Low Temperature Component
(NetCol8000-A060 Upflow)
1. Leak checking
2. Vacuuming
3. Precharging refrigerant
Low-pressure
needle valve
Exhaust pipe
needle valve
Nut
Reducing valve
Nitrogen
cylinder
Electronic
scale
Refrigerant
cylinder
Vacuum
pump