Krack Stainless Steel Ammonia Evaporator - 5.8 Ton. Model: BTR36-FlA. Capacity: 5.8 ton. (3) Dayton motors: 1/3 hp, 1075 rpm, 115 V, 60 Hz, 4.3 amps, single phase. Fan diameter: 1 ft. 6 in. System is for quick freezing. Ammonia tank dimensions: 9 in. diameter x 1 ft. 9 in. L. MWP: 250 psi. Max. temperature: 650 deg. F. Min. temperature: -20 deg. F. Factory test pressure: 300 psi. Inlets/Outlets: (2) 1 in. port / (1) 1 ½ in. port. Overall dimensions: 10 ft. 3 in. L x 2 ft. 5 in. W x 1 ft. 11 in. H. (BK).