Semi-Hermetic Cold Room Refrigertion Compressor with R502/R22 Refrigerant Gas 1.Motor nominal power :3 HP, 2cylinder machine design; used refrigerant back to air cooling, cooling with refrigerant, rated speed 1450 r / min, splash lubrication, spin reversible. 2.Can use the R22, R502 refrigerant. 3. Built and electronic motor protection with style, cutting-edge electronic motor protection module to provide comprehensive protection. 4 For a wide range of frozen, refrigerated applications designed. Please contact me freely if you have any requirement for our products. Hope that we can start our business in an early day.