| 摘要 |
1518655 Monitoring condition of refrigerators SIEMENS AG 4 March 1977 [12 March 1976] 09333/77 Heading G4N In a monitoring device for a refrigerator 1, an alarm indication is given in response to two sets of conditions:- (a) when electrical signals from the refrigerator indicate that, simultaneously, the refrigerator is not refrigerating, it is not automatically defrosting and a predetermined temperature does not prevail, or (b) when signals from the refrigerator indicate that, simultaneously, the refrigerator is not automatically defrosting, the predetermined temperature does not prevail, and the refrigerator unit has been refrigerating for a predetermined period of time. |
