METHOD FOR RUSTPROOFING REFRIGERATOR PART

摘要

PROBLEM TO BE SOLVED: To provide a method of rustproofing allowing sufficiently preventing a rust from growing and sufficiently preventing a rust preventive oil from depositing from a mixture of a chlorine-free refrigerant and a refrigerator oil and preventing physical and chemical properties of the refrigerator oil from changing even when the oil is contaminated into a refrigerant circulating system at the time of rustoproofing the metallic refrigerator parts with using the rust preventive oil. SOLUTION: This method for rustproofing the refrigerator parts is the method configuring the refrigerant circulating system of refrigerating equipment for the chlorine-free refrigerant and is characterized by comprising a step of applying the rust preventive oil comprising a base oil of the refrigerator oil used for the refrigerating equipments to the refrigerator parts.