Question 187Refrigeration & AC - 1st Asst/Chief

The correct answer is C) The expansion valve should not be adjusted, as the degree of superheat is within the accepted range. This is the correct answer because the low side pressure of 15 psig and the coil temperature of 10°F indicates that the system is operating with a proper degree of superheat, which is typically between 6-12°F. Adjusting the expansion valve is not necessary, as the system is functioning within the acceptable parameters. The other options are incorrect because they suggest issues that are not indicated by the given information. Cleaning the evaporator coils or changing the filter drier are not necessary based on the provided data, and the liquid line strainer does not need to be cleaned if the system is operating properly.