... CONDITIONLiquidNon-corrosive waterVolume ration of sand contentLess than 0.1%Size of sand contentLess than 0.2mmMax medium temperatureLess ... structure, high-lift, noiseless, pollution-free;Complete electrical protecting controller device, against under-voltage, over-voltage, over-flow, over ... , we provide a one year repair warranty with conditions:1) The warranty does not apply when the equipment has ...