Danfoss Selection & Application guidelines The LT series of compressors is designed for use with R502, using Maneurop 160P white mineral oil as a lubricant. LT compressors have a large internal free volume that protects against the risk of liquid hammering when liquid refrigerant enters the compressor. LT compressors are fully suction-gas cooled. That means no additional compressor cooling is required and allows the compressors to be insulated with acoustic jackets to reduce sound levels without risk of overheating. LT compressors are available in 7 differentmodelswith displacements ranging from 3 to 16.6 in3/rev. Six different motor voltage ranges are available for single and three phase power supplies at 60 Hz. All models are available in VE versions with oil equalization and an oil sight glass. ne-cylinder models are also available without oil equalization or an oil sight glass.