Loss of refrigerant during the process of purging of air and non-condensable gases can be kept to a minimum by what action?

Correct Answer: Option D — cracking the purge valve briefly and allowing the refrigerant to re-settle between purges

Cracking the purge valve briefly and allowing the refrigerant-air mixture to resettle minimizes refrigerant loss. This intermittent operational technique lets heavier refrigerant vapor separate and fall back into the condenser while venting accumulated non-condensables.