Figure 1. A19 temperature control with external range adjustment
These controls are designed to cover a broad range of general purpose operating temperature control applications in the refrigeration, air conditioning, and heating field with a minimum number of models. Standard applications include frozen food cases, display cases, beverage coolers, milk coolers, walk-in boxes, and water chillers.
Various control ranges are available that span working temperatures from -30°F to 225°F (-35°C to 105°C). Closed tank fittings and bulb wells are available for immersion applications. Single-stage controls without an enclosure and two-stage controls with or without an enclosure are available.
Important: Use the A19 control only as an
operating control. Where failure or malfunction of the control could lead to personal
injury or property damage to the controlled equipment or other property, additional
precautions must be designed into the control system. Incorporate and maintain other
devices, such as supervisory or alarm systems or safety or limit controls, intended to
warn of or protect against failure or malfunction of the control.
WARNING