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An R-134a Expansion Valve System That Is Properly Charged Has

question 49

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An R-134a expansion valve system that is properly charged has the following gauge readings,high-side 320 psig and low-side 50 psig and the ambient air temperature is 80°F.Which of the following is the most likely cause? Technician A says an air flow restriction through the condenser coud be the cause.Technician B says the refrigerant system coud be overcharged.Who is correct?


Definitions:

Salivary Glands

Glands in the mouth that produce saliva, which begins the process of digestion and helps protect the mouth from pathogens.

Inactivation

A process by which a substance, cell activity, or biological pathway is made less active or deactivated.

Amylase

An enzyme found in saliva and pancreatic fluid that converts starch and glycogen into simple sugars, aiding in digestion.

pH

A measure of the acidity or alkalinity of a solution, determined by the concentration of hydrogen ions, with lower values being more acidic and higher values more alkaline.

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