1992 McCormack Manufacturing Co. Evaporator. Model: 47Q. Nominal capacity: 90 tons with a saturated suction temperature of -40°F. Refrigeration: flooded R-717 (ammonia). Double circuited coil with (576) staggered, 130 in. long, 7/8 dia. aluminum tubes with .014 in. fins, (24) rows high, (12) rows deep and 126.5 inches long. Fins per inch: 2R@1, 2R@2 and 8R@4. Approximate volume: 300 gallons. Design pressure: 150 psi. Test pressure: 400 psig. (4) 42 in. dia. axial, guarded fans, 7.5 hp, 2 amps. CFM: 93,800. Overall dimensions: 13 ft. 8 in. L x 10 ft. W x 11 ft. 8 in. H.(ACN665).