Ranco O10-1402 Control

The Ranco O10-1402 Control is a heavy-duty low pressure refrigeration control engineered for critical compressor protection in commercial HVACR systems. Built with a plated steel frame and laser-welded bellows, this SPST open low switch provides a reliable "open on fall" action to prevent equipment damage during high-vacuum or loss-of-charge events. It features a wide adjustable pressure range of 12" WC to 50 PSIG and a field-tunable differential of 5 to 35 PSI, allowing technicians to dial in precise cut-in and cut-out setpoints via the large, easy-to-read scale plate.

This universal mounting component includes a 36-inch copper capillary with 1/4" SAE flare nut, utilizing the Super CAP capillary protection system to mitigate vibration-induced fatigue. Designed for compatibility with various refrigerants and high-amp loads, the Ranco O10-1402 ensures a robust electrical interface with raised screw terminals for streamlined field wiring. Whether used as a primary operating control or a safety limit, this automatic reset controller offers the durability required for demanding mechanical environments.

Key Benefits:

• Dual-Scale Adjustment: Precisely manage low pressure switch settings through the front-facing captive cover for efficient system cycling.
• Vibration Resistance: The 36-inch 36" CAP is protected by a vibration-dampening cone, significantly reducing the risk of HVAC pressure control leaks.
• Enhanced Durability: NEMA 1 enclosure and non-conductive cover protect internal SPST snap-action contacts from debris and moisture.
• Universal Application: High-amp rating makes it suitable for direct motor control or as a pilot duty component in diverse refrigeration setups.

Common Questions:

What is the primary switch action for this model?
The Ranco O10-1402 is an "open on drop" (open low) control, meaning it breaks the circuit when the pressure falls below the setpoint to protect the compressor.

How do I adjust the pressure differential?
Technicians can adjust the 5 to 35 PSI differential by utilizing the clearly marked internal scale and the adjustment screws located at the top of the unit.

Can this control be used for high-pressure cut-out?
No, this specific model is designed for low-pressure sensing. High-pressure applications require a control with "open on rise" switch action, such as the Ranco O11 series.

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.