| 摘要 |
PROBLEM TO BE SOLVED: To shorten the washing time of a water receiver and a drain-device by a method wherein a removable lid is attached to the water receiver at the mounting part of the drain-up device to wash the drain-up device or the circumference of suction port of the same device. SOLUTION: A removable lid 11, provided with a rubber plug 12 for draining, is attached to a service port, having a size capable of washing a drain-up device 9, provided on a water reserving unit 10 at the lower surface of the mounting part of the drain-up device of a water receiver 8, or the circumference of a suction port 17, by screwing through a packing. When drain in the drain-up device 9 can not be drained, the rubber plug 12 is pulled out to extract drain water, then, the lid 11 is removed once to wash the drain-up device 9 or the circumference of the suction port 17 and, thereafter, the lid 11 is attached again whereby the drain in the drain-up device can be drained. According to this method, the washing of the drain-up device 9 or the circumference of the suction port 17 can be effected without removing the water receiver 8. |
