(57) A drum-type washing machine of the present invention includes a water tank supported
in a main cabinet of a washing machine, a rotary drum housed in the water tank (52),
a motor (54) rotating the rotary drum (53), a supply valve (85) supplying water to
the water tank, an automated detergent dispenser (95) for automatically feeding detergent
to the water tank, an operation display unit (74) including an input setting unit
(83) and a display (84), a drain outlet provided in an inner bottom part of the water
tank, a drain valve (59) connected to the drain outlet, a clothes quantity detector
(91) for detecting a quantity of clothes , and a controller for controlling a series
of cycles including wash, rinse, and spin-dry cycles. The controller (88) includes
a mode for feeding the detergent by the automated detergent dispenser (95) based on
a result of the clothes quantity detector, supplying water using the supply valve,
driving the motor to execute a prewash cycle, then draining the water inside the water
tank by operating the drain valve, feeding the detergent of an amount less than that
in the prewash cycle by the automated detergent dispenser, supplying water using the
supply valve, and then executing a main wash cycle.
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