a newer model water cooled condenser-type ice machine uses r-404a refrigerant. assuming that the water-regulating valve is set correctly, which of the following head pressure ranges would the technician expect to find during a freeze cycle? a newer model water cooled condenser-type ice machine uses r-404a refrigerant. assuming that the water-regulating valve is set correctly, which of the following head pressure ranges would the technician expect to find during a freeze cycle? 25 - 75 psig 80 - 100 psig 200 - 250 psig 375 - 425 psig