Question 119Refrigeration/AC - Assistant Engineer70% to pass
Which statement about calibrating a newly installed thermostatic expansion valve is correct?
AI Explanation
The correct answer is D) An accurate thermometer and suction pressure gage are essential to this process.
Calibrating a newly installed thermostatic expansion valve requires precise measurements of the refrigeration system's suction pressure and temperature. This allows the technician to properly adjust the valve to control the flow of refrigerant and maintain the desired temperature in the refrigerated space. Relying on solid state controls alone is not sufficient, as the thermostatic expansion valve requires specific calibration using a thermometer and pressure gage. Options A, B, and C are incorrect as they do not accurately describe the essential tools and process for properly calibrating this critical refrigeration component.
Related Questions
#117 What maintenance may be carried out on a thermostatic expansion valve? #118 A thermostatic expansion valve is properly controlling evaporator superheat. Adjusting this valve to lower the evaporator superheat setting will result in which of the following? #120 Of the various possible methods shown in the illustration, which is the correct method of attaching a TXV feeler bulb to a small large line (7/8" and larger) with a horizontal run? Illustration GS-RA-50#121 Which of the following statements describes the accepted method for testing a thermostatic expansion valve? #122 When a thermostatic expansion valve is installed in a refrigerated container unit, the sensing bulb almost always requires insulation. Why is this so?