MINERAL OIL-BASED LUBRICANT FOR FLON COMPRESSOR

摘要

PURPOSE:To provide the titled lubricant capable of inhibiting the sludge formation and adherence around the discharge valve of a compressor even when it is used for a prolonged period of time, which comprises a particular base oil having a decreasd low-boiling fraction content. CONSTITUTION:A flon compressor lubricant comprising a mineral oil of the paraffin group type or mixed group type as a base oil, wherein the content of fraction having a boiling point of 350 deg.C (under 1atm) or less of the lubricant is limited to 5vol% or less. By the use of this lubricant, the sludge formation and adherence around the discharge valve of a compressor can be inhibited even when it is used for a prolonged period of time and the problem of refrigeration capacity decrease can be obviated.