Question 189Refrigeration/AC - 1st Asst/Chief70% to pass
Expansion valve maintenance should include which of the following procedures?
AI Explanation
The correct answer is D) All of the above.
Expansion valve maintenance should include all of the procedures listed: ensuring the thermal bulb is in good contact with the suction line and insulated, checking that the thermal bulb is in the proper location, and cleaning any in-line strainers as necessary. These steps are important to ensure the proper functioning of the expansion valve, which regulates the flow of refrigerant in a refrigeration or air conditioning system. Performing these maintenance tasks helps prevent issues like poor cooling performance or system failure.
Related Questions
#187 The coil temperature measured at the expansion valve sensing bulb of an operating system is 10°F. The low side pressure with the compressor running as shown on the gauge illustrated indicates 15 psig. What adjustments or changes, if any, should be made to the system? Illustration GS-RA-16 #188 Of the various possible methods shown in the illustration, which is the correct method of attaching a TXV feeler bulb to a large line (7/8" and larger) with a horizontal run? Illustration GS-RA-50#190 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? #191 When replacing a thermostatic expansion valve power element, what is true concerning the thermal bulb? #192 Which of the following statements describes the accepted method for testing a thermostatic expansion valve?