Ranco F25-107 Control

The Ranco F25-107 is a specialized defrost termination and fan delay control engineered for high-performance management in commercial refrigeration systems. This SPDT defrost control is critical for electric heat, hot gas, and reverse cycle setups, ensuring the evaporator fan only engages once the coil reaches the optimal temperature. By utilizing a 60-inch capillary with a 3/8" x 4" cross ambient bulb, the F25-107 effectively prevents warm, moist air from circulating into the refrigerated space immediately following a defrost cycle. This refrigeration temperature control is designed for a range of 40°F to 75°F and features a factory-fixed 20°F differential. With a robust electrical rating of 20A at 120/240V AC and 80A locked rotor amperage, it provides the heavy-duty switching required for intensive HVACR environments. Integrating this fan delay switch into your system, specifically alongside 7008-100 series controls, optimizes overall efficiency and maintains strict temperature integrity for medium-temperature reach-in and beverage applications.

Key Benefits

• Precise Fan Management: Delays fan start-up to prevent heat gain and moisture spikes in the cabinet.
• Versatile Compatibility: Optimized for electric heat, hot gas, and reverse cycle defrost systems.
• Rugged Electrical Specs: Rated for 20 Amps at 240V with a 360 VA pilot duty rating for reliable industrial switching.
• Extended Reach: The 60-inch capillary allows for flexible remote bulb sensing in various evaporator configurations.
• System Efficiency: Fixed 20°F differential ensures consistent termination and reduces short-cycling of the evaporator fans.

Common Questions How does the SPDT action function in this control? The Ranco F25-107 utilizes a Single Pole Double Throw switch where one set of contacts opens on temperature rise (terminating defrost) while the other closes to engage the fan motor once the coil has cooled sufficiently. Is this control suitable for low-temperature freezers? This specific model is calibrated for a 40°F to 75°F range, making it best suited for medium-temperature applications like reach-in coolers and beverage dispensers rather than ultra-low temp blast freezers. Can the fan delay setting be adjusted manually? No, the F25-107 features a factory-fixed low event for the fan delay to ensure consistent performance and prevent field calibration errors that could lead to coil icing or warm air circulation.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.