By Bubba Moore, Technical Services Manager, Southeast District Evacuation techniques are meant to remove air and moisture trapped in a refrigeration system. Air takes up space in the refrigeration system and causes reduced heat transfer plus erratic operations. On the other hand, moisture in the refrigerant system can freeze-up and block refrigerant flow. Moisture also combines with the oil and refrigerant to form acids and sludge, which can cause system damage or failure. There are… Read More