Used 300 Ton Air-Cooled Screw Chiller. Manufactured by Carrier AquaForce. Model 30XAB30064-0FSXM. R-134A Refrigerant. Controls. Serial# 1916Q94938, Year 2019. Machine total hours = 73696, Machine starts = 15909, Compressor A hours = 37766, Compressor A starts = 22714, Compressor B hours = 55025, Compressor B starts = 4243.