Patent ID: 6711445
Filing Date: 2004-03-23
Classification: F25D,G05B

Abstract:
An arrangement within a refrigeration control apparatus comprisinga master unit comprising a mother board comprising a bus configured to carry signals between boards coupled to the mother board; a processor board interfaced to the mother board, the processor board comprising a processor; a program memory; instructions for the processor stored on the program memory; an interface circuit coupled to the mother board; a load control module interfaced to the mother board, the load control module comprising an interface circuit coupled to the mother board; a circuit breaker coupled to a power input; a load relay comprising a first interlocked relay and a second interlocked relay coupled to the circuit breaker, the load relay configured to switch power; an override switch and the processor coupled to the load relay to control the load relay; and an indicator coupled to the processor and the override switch; wherein line voltage being removed from the second interlocked relay when the first interlocked relay is actuated.