| 摘要 |
PROBLEM TO BE SOLVED: To easily set and confirm pressure, and to operate a refrigerating machine in an optimum state according to the operation state of a showcase or the like. SOLUTION: A refrigerating machine can change the pressure display of a display part for digitally displaying a low pressure, a high pressure, intake gas temperature, and a setting pressure from a conventional unit to an SI one. Also, a pressure-controlling device 8 is connected to a monitor control panel 2 of a centralized monitoring device 1 for controlling a showcase 6 or the like via a serial transmission line 4, and operation information and a change command can be transmitted and received between the monitor control panel 2 and the pressure-controlling device 8. In this case, the operation information includes the operation pressure of the refrigerating machine 9, the operation state of a compressor, and the setting pressure of the refrigerating machine 9 or the like. |
