Commonly used in large-tonnage residential units and commercial rooftop packages

the 330424001 propeller is dynamically balanced to minimize vibration and prevent premature bearing wear on the condenser motor

or negative pressure issues

but the temperature sensor must be placed on the liquid line stub-out leaving the coil

Supco SLP2580 Pressure Switch 321142-301 Commonly used in large-tonnage residentialThe Supco SLP2580 Low Pressure Switch is a high precision, fixed setting control designed for critical system protection in HVAC and refrigeration equipment. This encapsulated non adjustable pressure switch is factory set to open at 25 PSI (Cut Out) on a pressure drop and close at 80 PSI (Cut In), providing an automatic reset function that ensures the compressor is protected from low suction conditions or loss of charge. Built with a snap acting