Ranco P30-5827 Oil Control

The Ranco P30-5827 Lube Oil Control is a critical safety component designed for pressure-lubricated refrigeration compressors. This electromechanical control utilizes two opposed bellows to monitor the net oil pressure differential between the crankcase and the oil pump outlet. Engineered with a fixed 120-second time delay, the P30-5827 facilitates sufficient oil pressure buildup during equipment startup and prevents nuisance tripping during brief pressure fluctuations. If the differential pressure remains below the required setpoint beyond the 120-second window, the manual reset switch breaks the pilot circuit to protect internal bearings from catastrophic failure. This HVAC oil pressure switch features Robertshaw’s Super Cap® capillary protection system for superior vibration dampening and long-term durability in commercial refrigeration environments. Rated for 120/240V AC pilot duty, it includes a high-impact, non-conductive cover and industry-standard terminal identification for seamless integration and compressor oil protection.

Key Benefits:

• Integrated 120-Second Delay: Prevents premature compressor shutdown during initial startup and oil aeration periods.
• Super Cap® Technology: Reinforced capillary design minimizes mechanical stress and prevents refrigerant leaks caused by work-hardening and vibration.
• Ambient Temperature Compensation: Ensures consistent timing accuracy across varying mechanical room temperatures for reliable lube oil protection.
• Field Serviceability: Features a replaceable switch module and front-located captive cover screw for efficient maintenance.
• Universal Compatibility: Serves as a direct replacement for various Johnson Controls P45 and Danfoss oil pressure controls.

Common Questions:

• What is the function of the 120-second delay? The delay allows the pump to establish stable net oil pressure before the control interrupts the compressor circuit, preventing trips during normal startup cycles.
• How do I reset the control after a trip? This unit requires a manual reset. Once the oil pressure issue is diagnosed and rectified, press the reset button on the front cover to restore the circuit.
• Is the P30-5827 compatible with different refrigerants? Yes, the Ranco P30 series is designed for use with all common non-corrosive refrigerants in pressure-lubricated systems.

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.