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Huawei NetCol8000-A045D Quick Manual page 42

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Scenario with a Low Temperature Component (NetCol8000-A060 Upflow)
1. Leak checking
2. Vacuuming
3. Precharging refrigerant
Refrigerant
cylinder
Electronic
scale
Scenario with a Low Temperature Component (NetCol8000-A045 Upflow)
Vacuum pump
Refrigerant
cylinder
Electronic
scale
Reducing valve
Vacuum
pump
1. Leak checking
2. Vacuuming
3. Precharging refrigerant
Reducing valve
Nut
Nitrogen
cylinder
41
Nut
Nitrogen
cylinder
Exhaust pipe
needle valve
Low-pressure needle valve
Liquid pipe
Exhaust pipe
needle valve
needle valve
Low-pressure needle valve
Low-pressure
needle valve

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