Question 189Refrigeration & AC - 1st Asst/Chief
70% to passExpansion valve maintenance should include which of the following procedures?
AEnsuring that the thermal bulb is in good contact with the suction line and insulated.
BChecking that the thermal bulb is in the proper location.
CCleaning of in-line strainers as necessary.
DAll of the above.
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.
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