Ranco O20-7006 Control

The Ranco O20-7006 Dual Pressure Control is a versatile HVAC dual pressure switch designed for commercial refrigeration compressor protection. This heavy-duty DPST open low control features a wide range and high-differential capabilities tailored for high-pressure systems. The Ranco O20-7006 is engineered to monitor both high-side and low-side pressures, providing a cut-out mechanism to prevent equipment damage during high-pressure surges or loss of refrigerant charge. Built with a 36-inch capillary tube with 1/4" flare nut connections, it allows for flexible mounting in dense mechanical rooms. The low-pressure side operates between 100 to 400 PSI, making it a rugged solution for R-22, R-404A, and R-134a systems. This high-pressure cutout switch is a standard replacement for technicians requiring reliable refrigeration pressure control with simple manual reset or automatic cycling depending on the specific wiring configuration used in the field.

• Universal Compatibility: Designed for use in diverse commercial cooling applications with compatibility for most non-corrosive refrigerants.
• Rugged Construction: Features a NEMA 1 enclosure and high-grade bellows for long-cycle life in demanding environments.
• Precise Adjustment: Easily accessible range and differential screws allow for field calibration to meet specific system requirements.
• Secure Connection: The 36" capillary ensures vibration isolation and ease of installation on manifold ports.

Common Questions

Is the Ranco O20-7006 suitable for high-pressure CO2 systems? This control is rated for standard high-pressure refrigerants up to 400 PSI; always verify that your system’s maximum peak pressure does not exceed the burst rating of the bellows.

Can this control be used for both safety cutout and cycling? Yes, the DPST configuration allows for various wiring schemes to handle compressor cycling or safety lockout functions depending on the terminal connections.

How do I handle the 36" capillary to prevent leaks? Ensure the capillary is looped to absorb vibration and avoid contact with sharp edges or copper lines that could cause friction wear over time.

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.