About the Refrigeration System : The sea water flake ice machine uses a refrigeration system to cool the evaporator. Common refrigerants are environmental friendly gas, R404a, or R507a. or others depending on the design and intended use of the machine. custom ice maker machine, Ice Maker Ice Maker, 1 Ton Tube Ice Machine, Euhomy Ice Maker Countertop,Ice Cube Making Machine Industrial. Small ice block machine for beginners: These ice machines, which are suitable for small commercial businesses or even home use, can cost anywhere from $1,800 to $5,000. Ice block size available will be from 2.5kg to 10kg. The product will supply to all over the world, such as Europe, America, Australia,Surabaya, Italy,Croatia, Wellington.For industrial type ice machine: ice making quantity ranges from 5000kg per day to 50,000kg per day, even higher.