... :1. Working medium carries no corrosives, sand contents shall be maximum 0.10% by volume and granular size ... the nominal delivery range.4. The water pump shall be fully submerged into water with submerged depth of ... 3m and max. depth of 5m, the pump shall be min. 0.5m over the water bottom and ... voltage 220V, three-phase voltage 380V and voltage fluctuation shall be 0.9-1.1 times the nominal.Guarantee: ...