Randell defrost timers and replacement parts for Randell commercial refrigeration equipment, used to automatically cycle the unit between cooling and defrost modes. The timers, such as the EL TMR201 and EL TMR1401, ensure consistent performance and prevent ice buildup on evaporator coils.
Function: The timer controls the defrost system by periodically switching off the compressor and turning on a defrost heater. This melts accumulated frost, allowing the resulting water to drain away.
Cycle type: The defrost timer is typically both time-initiated and temperature-terminated. This means a defrost cycle begins after a set amount of time and ends once a specific temperature is reached, which saves energy compared to a purely timed cycle.
Safety mechanism: The timer ensures the compressor and the defrost heater never run simultaneously.
Common models and specifications
EL TMR201: This model is a 115V timer with a 15A or 9A current rating, depending on the variant. One version features a 6-hour interval with a 20-25 minute defrost duration.
EL TMR1401: This timer operates at 120V and 60Hz with a 15A rating. It is specifically designed for Randell equipment to ensure reliable performance.
EL TMR1402: This timer is also rated for 120V, 60Hz, and 15A. A variant is listed with a 5-hour, 35-minute cycle.