The Dwyer Instruments 1910-10 is a field-proven low differential pressure switch engineered for high-precision monitoring of air and non-combustible gases in demanding HVAC applications

and 94 control systems

you must use the MP55A series which features specialized materials compatible with R717

such as the S7800A1142

Loren Cook 100633 Motor 322057-301 The Dwyer Instruments 1910-10 isThe Loren Cook 100633 Motor is a high performance, single phase 1. 5HP HVAC replacement motor engineered for demanding commercial ventilation and exhaust fan applications. Running at a synchronized 1725 RPM, this 120 230V AC motor provides the high torque and thermal stability required for continuous operation in Loren Cook centrifugal and axial fan units. As a genuine OEM Loren Cook part, it ensures direct mounting compatibility, eliminating the need