After depressurizing the regulator and removing the diaphragm case

specifically addressing limit switch tripping issues caused by restricted airflow or cracked heat exchangers

The two SPDT auxiliary switches are used to signal when the actuator reaches specific rotation points

and transformer outputs

multiple EFB120-S actuators can be wired in parallel

Johnson Controls P499RCH-401 Pressure Transducer 320720-756 After depressurizing the regulator andThe Johnson Controls P499RCH 401 is a high accuracy refrigeration pressure transducer engineered for demanding HVACR environments. Designed to provide a linear 0. 5 to 4. 5 Vdc output signal, this ratiometric sensor monitors a pressure range of 1 to 8 Bar, making it ideal for low side suction monitoring or head pressure control in light commercial systems. The unit features a durable stainless steel construction and is compatible with all common non