Chester-Jensen Co, Inc. Stainless Steel Falling Film Plate Chiller. Model: XB-4-OT-2-24. S/N: 8753-P. Year: 1987. Cabinet has space for 4 plates. There are two plates installed with 24 corrugations design. Designed to be closed during operation and open for cleaning (side covers missing). Tonnage rating per plate: 15 TR max, depending on application. Refrigerants: R-717 Ammonia (full flooded or liquid recirculated), R-22 Freon. Water tank capacity: 100 gallons. Approx. weight / dimensions: 1,500 lbs., 33 in. W x 70 in L x 76.5 in. H.