Question 114Refrigeration/AC - QMED70% to pass
Leaking suction valves in a refrigeration compressor are indicated by which of the following?
AI Explanation
The correct answer is A) higher than normal suction pressure.
Leaking suction valves in a refrigeration compressor will cause a higher than normal suction pressure. This is because the leak allows refrigerant to bypass the compressor, reducing the compressor's ability to draw a proper vacuum on the suction side. The higher suction pressure is an indication that the suction valves are not sealing properly.
The other options are incorrect because: B) an increase in compressor noise may indicate other issues like worn bearings, C) lower evaporator temperature would indicate the system is working properly, and D) lower suction pressure would be the opposite of what is expected with leaking suction valves.
Related Questions
#112 If the running suction pressure at the refrigeration compressor of a TXV controlled air- cooled refrigeration system is below normal, which of the following can be a cause? #113 The color and/or condition of the oil observed in the sight glass of an operating refrigeration compressor experiencing bearing wear or piston scoring would be which of the following? #115 A refrigeration unit will tend to short cycle when operating under what conditions? #116 An excessive charge of refrigerant in a thermostatically controlled, air-cooled, refrigeration system using a TXV as an expansion device can cause which of the following? #117 Which of the listed statements describes the reason why oil foaming occurs when starting a refrigeration compressor?