Ranco O10-1894 Control

The Ranco O10-1894 Single Pressure Control is a rugged, commercial refrigeration pressure switch designed for high pressure limit applications. Built for veteran contractors, this SPST open low control features an adjustable pressure range of 100 to 400 PSI, making it ideal for monitoring high-side discharge or condenser fan cycling. The Ranco O series utilizes laser-welded stainless steel bellows and the SUPER CAP capillary protection system to ensure reliability under heavy vibration. The NEMA 1 enclosure and 1/4" SAE male flare fitting allow for straightforward integration into HVACR systems using R12, R22, or R502. With an adjustable differential of 40 to 150 PSI, technicians can precisely calibrate the cut-out and cut-in points to meet specific system demands. This automatic reset pressure control provides a non-conductive cover and front-located scale plate for quick field inspections, ensuring the Ranco O10-1894 maintains system protection and compressor safety across diverse commercial cooling environments.

• Enhanced Durability: Features laser-welded bellows and a heavy-duty plated steel frame for long-term service in demanding environments.
• Vibration Protection: The Super Cap capillary system significantly reduces the risk of vibration-induced breakage at brazed joints.
• Universal Compatibility: Equipped with a standard 1/4 inch male flare connector and suitable for a wide variety of legacy and high-pressure refrigerants.
• Precise Calibration: Offers a wide adjustable differential (40-150 PSI) and adjustable range (100-400 PSI) for granular control of system events.
• Easy Wiring: Raised screw terminals within a NEMA 1 enclosure simplify terminal access for field technicians.

What is the switch action for the Ranco O10-1894?
This is an SPST Open Low (Close on Rise) control. The switch opens when pressure drops to the low event setting and closes as pressure rises to the set point.

Can this control be used for condenser fan cycling?
Yes, the high pressure range and adjustable differential make the O10-1894 a standard choice for condenser fan cycling and high limit protection.

Is the mounting orientation restricted?
No, the Ranco O series is designed for universal mounting and can be installed in any position without affecting the accuracy of the pressure sensor.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.