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Académie
HVAC
NATE Light Commercial Refrigeration Service Specialty
Ice Machine Service
Vérification des connaissances
Ice Machine Service
Vérification des connaissances
Vérification des connaissances
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R-407C must always be charged as a liquid because
A
EPA regulations require liquid charging for all HFC refrigerants
B
It is flammable in vapor form at normal system pressures
C
It is a zeotropic refrigerant blend that fractionates (separates into components) if charged as vapor
D
The cylinder pressure drops too low for vapor charging at ambient temperatures
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