Mycom Reciprocating Compound Compressor Mycom Compressor. Model: N62WB. Refrigerant: ammonia (R-717). Rated capacity: 66 tons at 110 hp at a condensing temperature of 95°F and evaporation temperature of -4°F. (8) cylinders: (6) low stage and (2) high stage. Bore: 5-1/8. Stroke: 3-15/16. Rated compressor maximum speed: 1200 rpm. Maximum speed displacement: low stage 337 cfm and high stage 112 cfm. Lincoln Lincguard motor: 100 HP, 1770 rpm, 230/460V, 238/119 amps, 60 Hz, 3 phase. Overall dimensions: 7 ft. 11 in. L x 4 ft. 5 in. W x 5 ft. H.