the relay is likely carbon-pitted or stuck

This pressure switch is FM approved

High-Flow 1

It utilizes a medium temperature charge and is externally equalized to ensure precise superheat control across varying evaporator loads

Schneider Electric (Barber Colman) 2323-505 Pressure Transmitter Els PW 17895 the relay is likely carbon-pittedThe Schneider Electric 2323 505 is a high precision differential pressure transmitter designed for monitoring and controlling low static or differential pressures in commercial HVAC systems. Operating within a narrow range of 0. 05 to +0. 20 inches Water Column (W. C.), this pneumatic pressure sensor is essential for sensitive applications such as cleanroom monitoring, hospital isolation zones, and precise VAV box control. It features a low 29 scim