Nor-Lake 91692 Defrost Timer 110/120 VAC 60Hz

The Nor-Lake 91692 Defrost Timer controls the timing of defrost cycles within commercial refrigeration equipment. The 110/120 VAC rating specifies the operating voltage, while the 60 hertz specification identifies the required electrical frequency for the timer circuit. The timer switches the refrigeration system between normal cooling and scheduled defrost operation according to its timing sequence. Placed within the refrigeration control circuit, it coordinates the operation with connected components such as the compressor and defrost heater. Its role is to initiate and end defrost periods at the programmed intervals, supporting the operating cycle of the refrigeration system.