Question 65Refrigeration & AC - Assistant Engineer

The correct answer is C) cracking the purge valve briefly and allowing the refrigerant to re-settle between purges. This is the correct answer because allowing the refrigerant to re-settle between brief purges minimizes the loss of refrigerant during the process of purging air and non-condensable gases. Purging too long or too frequently can cause excessive refrigerant loss, so the key is to only briefly crack open the purge valve and let the refrigerant resettle before the next purge. The other options are incorrect because they do not specifically address the need to minimize refrigerant loss during the purging process. Purging through a dehydrator, the top of the receiver, or the discharge service valve does not directly control the duration or frequency of the purging to conserve refrigerant.