Washing device and operation setting method therefor

Parameters for a plurality of motors that move a nozzle on a three-dimensional movement locus are set easily. A washing device 1 includes display device 7, and a worker touches an input unit 7A of the display device 7 with a finger, to thereby set parameters for both servo motors that move a nozzle 3 on a three-dimensional movement locus. Specifically, a three-dimensional model Md1 of a tank 2 to be washed is displayed on the input unit 7A, and next, the worker drags specific spots of the three-dimensional model Md1, sequentially, and selects washing methods and washing time periods of the spots. The selected contents are transmitted to a control device 6, are computed by a computing unit 6A of the control device 6, so that the parameters for both servo motors for operating the nozzle 3 in three dimensions are set in washing.