Cleveland Controls AFS-460-121 Switch airtight seal over the sensor

airtight seal over the sensor face

Using a multimeter set to the Ohms scale

ensure the flow arrow on the canister matches the refrigerant path

With its counter-clockwise (CCW) rotation

Cleveland Controls AFS-460-121 Switch airtight seal over the sensorThe Cleveland Controls AFS 460 121 is a professional grade adjustable air pressure sensing switch engineered for high accuracy performance in HVAC and energy management systems. Designed to monitor positive, negative, or differential air pressure, this proving switch features a versatile setpoint range of 0. 4" w. c. to 12. 0" w. c., making it a reliable solution for verifying fan operation or filter status. As a safety critical component, it utilizes