Lochinvar & A.O. Smith 100113144 Switch 328140-751 verify the run capacitor rating

verify the run capacitor rating against the motor nameplate to ensure optimal torque and thermal protection

The 342813-75104 is an uncased evaporator coil kit

ensuring your client's heat pump reversing valve maintains optimal head pressure and system efficiency

vibration-resistant placement

an open circuit during cool-down indicates a failed protector that requires replacement

Lochinvar & A.O. Smith 100113144 Switch 328140-751 verify the run capacitor ratingThe Lochinvar & A. O. Smith 100113144 Blower Prover Switch is a critical safety component designed for high efficiency water heaters and commercial boilers. As a direct OEM replacement for NS2 1333 01, this pressure switch (often referred to as an air pressure switch or draft prover switch) monitors the differential pressure created by the inducer motor. By verifying stable airflow, it ensures the sequence of operation proceeds to ignition safely.