This evaporator limit control acts as a safety switch that opens the electrical circuit at 35°F to stop cooling and closes it at 58°F to resume operation

providing accurate feedback for economizer control and HVAC sequencing

or if control pressure "overshoots" under normal load

How do I troubleshoot a zone not heating

Reliable Switching: Utilizes high-quality silver contacts to provide precise electrical continuity once the specific pressure setpoint is achieved

Schneider Electric (Barber Colman) MK-4641 Proportional Control Els PW 17895 This evaporator limit control actsThe Schneider Electric (Barber Colman) MK 4641 is a job ready pneumatic valve actuator engineered for precise proportional control and reliable performance in commercial HVAC applications. Featuring an 11 square inch effective diaphragm area, this unit is built for linear movement and is the standard choice for managing VB 7000 series globe valves, as well as legacy VB 9000, VB 314, and VB 131 models. Its 3 13 PSI pneumatic spring range allows for