| 摘要 |
PURPOSE:To easily set a device in a smaller space further in a place for the operator to see easily, by displaying abnormal conditions of the first and second engines through a single of abnormal condition displaying means. CONSTITUTION:When the first and second engines are normal, oil pressure switches 1a, 2a, cooling water temperature switches 1b, 2b and level switches 1c, 2c of a lubricating oil quantity are all in an open state, and abnormality display lamps 8a-8c are turned off. If the pressure switch 1a of the first engine is abnormal and closed, a circuit, consisting of the diaplay lamp 8a, the second diode 10b for the first engine, the first circuit 9c, normally-close contact 11c of the first decision switch 11 and normally-close contact 12c of the second decision switch 12, is closed to turn on the lamp 8a. The lamp is kept turning on by operation of the first decision switch 11 while turned off by operation of the second decision switch 12, and oil pressure in the first engine can be decided abnormal. |
