Reznor 197078 Flow Switch 30067439-890 the Supco 3W2 Hard Start

the Supco 3W2 Hard Start utilizes voltage-sensing technology to drop the start capacitor out of the circuit immediately once the motor reaches 75-80% of its synchronous speed

audible buzzing indicating a compromised magnetic field

making it essential for managing actuator positioning and compressor cycling

ideal for R-410A and other high-pressure HVACR applications

Reznor 197078 Flow Switch 30067439-890 the Supco 3W2 Hard StartAs a veteran technician, you know that a failing pressure switch quickly shuts down a job site. The Reznor 197078 Air Flow Switch is the primary safety mechanism for ensuring proper draft and venting before the burner cycle begins. This genuine OEM part is engineered with a specific 0. 80 IN WC set point, calibrated to the rigorous tolerances required for Reznor UDX, UDZ, and older unit heaters. Operating as an SPST contact type (Single Pole Single