DESCRIBE THE FOLLOWING TERM AS APPLIED TO REFRIGERANTS AND THE ENVIRONMENT: Hygroscopicity
That property of a substance, which enables it to absorb water vapor from the surrounding atmosphere. Relative to most materials, vellum and paper, particularly the former, are strongly hygroscopic. One of the last things you want in a refrigeration system is moisture. Moisture causes lubrication breakdown and can cause ice to form at low pressure points. Moisture re-acts with the refrigerant to create acid as a by-product. Acid attacks components and motor windings - and generally shortens the life of the compressor. ERG 500 is virtually non-hygroscopic; it carries no moisture into the system.