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Ranco A12-700 defrost cycle control unit, compact box with capillary tube and bulb

Ranco

Ranco A12-700 Defrost Cycle Control, SPST, NC hvac control

SKU CH-RS8N-8JEDJ

A defrost cycle control for vending machines, beverage dispensers and reach-in coolers with an 84 in capillary, 11.5 °F cold-off temperature.

  • Constant cut-in control maintains stable evaporator temperature
  • SPST normally-closed contact handles 16 A at 120 V and 240 V
  • 84-inch capillary with bulb fits diverse equipment layouts
  • 8 °F differential prevents short-cycling on medium-temp units
  • Altitude-adjustable design suits vending machines and reach-in coolers

Defrost Cycle Control for Commercial Refrigeration

The Ranco A12-700 is a defrost cycle control designed for medium temperature commercial equipment. It suits vending machines, automatic beverage dispensers and reach-in coolers. The control uses a constant cut-in design with a single-pole single-throw normally closed contact form. It is supplied new for HVAC applications.

Capillary Length and Temperature Range

An 84 inch capillary with bulb provides flexible mounting inside the refrigerated space. The cold off temperature is fixed at 11.5 degrees Fahrenheit with an 8 degree Fahrenheit differential. There is no adjustable cold on setting, so the control opens at the off point and closes after the differential is satisfied. This suits systems needing a consistent cut-in point.

Electrical Ratings and Altitude Adjustment

The control carries a full load current of 16 amps at both 120 volts AC and 240 volts AC. An altitude adjustment feature allows calibration for installation height. The SPST normally closed contacts open on temperature rise to terminate the defrost cycle. No other electrical ratings or certifications are provided in the data.

Highlights

  • Constant cut-in control maintains stable evaporator temperature
  • SPST normally-closed contact handles 16 A at 120 V and 240 V
  • 84-inch capillary with bulb fits diverse equipment layouts
  • 8 °F differential prevents short-cycling on medium-temp units
  • Altitude-adjustable design suits vending machines and reach-in coolers

Specifications

BrandRANCO

Questions about this item

Will the 84 in capillary reach the evaporator on my older reach-in cooler?

The 84 in capillary with bulb is designed for medium temperature commercial equipment such as reach-in coolers and vending machines.

How do I verify the constant cut-in control is cycling correctly after installation?

The control cuts in at a constant 11.5 °F and cuts out 8 °F below that, so the compressor should restart at 11.5 °F every cycle.

Does the box include mounting hardware or only the SPST NC control body?

The control body with 84 in capillary and bulb is supplied; mounting brackets and wiring connectors are not included and must be sourced separately.

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