Question 71Refrigeration/AC - QMED70% to pass
A refrigeration system is equipped with a reciprocating compressor and a water-cooled condensing unit. If the system is overcharged, the resulting high head pressure will be caused by what condition?
AI Explanation
The correct answer is A) refrigerant flooding the condenser.
When a refrigeration system is overcharged, it results in an excess amount of refrigerant in the system. This excess refrigerant will flood the condenser, causing a higher than normal head pressure at the compressor discharge. The high head pressure is a direct result of the overcharged condition and the excess refrigerant in the condenser.
The other answer choices are incorrect because:
B) An incorrectly adjusted high-pressure cutout would not be the cause of the high head pressure, but rather a result of it.
C) An overfeeding expansion valve would cause low head pressure, not high head pressure.
D) A leaking compressor suction valve would cause low suction pressure, not high head pressure.
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