... , R404A,R407C Copeland semi-hermetic compressor double system air-cooled water chiller LSF22DDYApplications:Medical and chemical ... regulation;Compact design, reliable operation;Independent refrigeration system: the refrigeration system of multi-compressor unit is relatively independent, ... 2.built-in pressure differential gas supplying lubrication system, reducing fragile parts;3.Efficient Teflon bearing ...