| 摘要 |
PURPOSE:To keep the temperature of oil from rising using simple, inexpensive constitution by restricting the activation of an elevator for a predetermined time after the elevator door has been closed if an oil temperature detector in an oil tank detects oil temperature equal to or greater than a predetermined value, and delaying the opening of the door for a predetermined time at the arrival of the elevator. CONSTITUTION:An oil tank 7 is provided with an oil temperature detector 22, whose oil temperature detection value is transmitted to a controller 12. The value is compared with a temperature preset by a microcomputer 12 built into the controller 12, and when the detected temperature is equal to or greater than the predetermined value, the frequency of activation of an elevator is reduced so as to keep the temperature of the oil from rising; i.e., to activate the elevator, a command to close the door is transmitted from the controller 12 to a door opening/closing device 20 and the elevator is activated a predetermined time thereafter. At the arrival of the elevator a command to open the door is transmitted to the door opening/closing device 20 after a delay of a predetermined time with respect to an elevator stop signal in the controller 12. |
