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Académie
HVAC
NATE Commercial Refrigeration Service Specialty
Walk-In Cooler and Freezer Service
Vérification des connaissances
Walk-In Cooler and Freezer Service
Vérification des connaissances
Vérification des connaissances
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What is the function of the EPR (evaporator pressure regulator) in a supermarket rack system serving both medium-temperature and low-temperature cases from a single compressor rack?
A
To maintain a minimum evaporator pressure in medium-temp cases so their coils do not operate below freezing when the rack suction group runs at low-temp pressures
B
To equalize pressure between all cases on the rack
C
To increase refrigerant flow to freezer cases during peak load
D
To reduce the refrigerant charge needed in the system
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