Endoscope connection portions, a fluid feeding duct, a liquid supply duct, a pump, a first atmospheric exposure duct including one end connected to the fluid feeding duct and the other end exposed to atmosphere, a relief valve disposed at an intermediate position of the first atmospheric exposure duct, a first stop section disposed at an intermediate position of the first atmospheric exposure duct, and a control section that performs control to supply a liquid to ducts of endoscopes and controls at least opening/closing operation of the first stop section are included.
