초록 ▼

Electronic circuitry provides protection for refrigeration machines by continuously monitoring supply voltage conditions and various other conditions. Information regarding abnormalities detected in the refrigeration machines or supply voltage is stored in a memory. The stored information may then b

Electronic circuitry provides protection for refrigeration machines by continuously monitoring supply voltage conditions and various other conditions. Information regarding abnormalities detected in the refrigeration machines or supply voltage is stored in a memory. The stored information may then be downloaded from the memory by a service technician. The electronic circuitry is universal and can therefore be used with various refrigeration machines. Further, the efficiency of a low temperature storage cabinet is enhanced by cycling the evaporator motor in comparison to a compressor percentage run time. Other factors are also considered in the running of the reach-in cabinet evaporator fan.

대표청구항 ▼

1. An electronic control board for controlling a refrigeration machine comprising:a micro-control unit located on said control board; a voltage monitor for continuously monitoring a supply voltage and inputting a signal to said micro-control unit representative of a voltage level; an electronic circ

1. An electronic control board for controlling a refrigeration machine comprising:a micro-control unit located on said control board; a voltage monitor for continuously monitoring a supply voltage and inputting a signal to said micro-control unit representative of a voltage level; an electronic circuit connected to said micro-control unit for producing a delay time period in which alarm functions controlled by said control board are temporarily disabled for allowing starting of the refrigeration machine; and an electronic memory circuit for storing data relating to detected abnormal operational occurrences and connected to said micro-control unit; wherein said data stored in said electronic memory circuit is accessible by an interface device.