Ranco O12-4834 Pressure Control

The Ranco O12-4834 Pressure Control is a heavy-duty dual pressure controller designed for commercial refrigeration and air conditioning systems. This mechanical switch provides simultaneous management of high and low-side pressures within a single housing, utilizing a 10" WC to 100 PSI low-pressure range and a fixed high-pressure cutout. Engineered with SPST (Single Pole Single Throw) switching logic, the O12-4834 is a reliable solution for compressor cycling and high-pressure safety cutout applications. The unit features a 48-inch capillary tube with a 1/4" flare nut, allowing for flexible mounting and connection to the system's liquid or suction lines. Its rugged construction ensures precise setpoint stability even in high-vibration environments commonly found in mechanical rooms.

Key Benefits:

• Universal compatibility with non-corrosive refrigerants used in commercial HVACR systems.
• High-visibility scale plate allows for accurate setpoint adjustments in the field.
• Integrated auto-reset functionality minimizes system downtime during transient pressure spikes.
• Compact NEMA 1 enclosure protects internal bellows and switch mechanisms from debris.
• Long 48-inch copper capillary provides ample reach for diverse condenser and evaporator configurations.

Common Questions:

What are the electrical ratings for this control?
The Ranco O-series is typically rated for 120V/240V AC operation, supporting Full Load Amps (FLA) and Locked Rotor Amps (LRA) requirements for most fractional to mid-range compressors.

Can this be used as a replacement for other dual pressure controls?
Yes, provided the differential and pressure range match. It is a common professional substitute for various Penn or Danfoss dual-pressure models in refrigeration racks.

How do I adjust the low-side differential?
Setpoints are adjusted via the internal screws located at the top of the unit; always verify your cut-in and cut-out points with a manifold gauge for precision.

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.