PROBLEM TO BE SOLVED: To provide a degreasing device capable of efficiently removing the oil-component of a degreasing tank by utilizing the state after the end of holidays. ;SOLUTION: This degreasing device 1 removes the oil-component by immersing an object to be treated in a degreasing tank 11 filled with a degreasing liquid L and separates the removed oil-component O in a separate tank 131. The oil-component O is removed by sucking the degreasing liquid near the liquid level in the static state of the degreasing liquid L of the degreasing tank 11.;COPYRIGHT: (C)1999,JPO
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