Description
Johnson Controls P128AA-1 Lube Oil Control
The Johnson Controls P128AA-1 is a professional-grade lube oil pressure control engineered to protect refrigeration compressors from low oil pressure conditions. Designed for commercial and industrial refrigeration applications, this control monitors oil pressure differential and shuts down the compressor when safe operating pressure cannot be maintained — helping prevent costly compressor failures and extending equipment life.
Key Features
- 1/4″ SAE flare connectors — no capillary tubing required for simplified installation
- Manual reset operation ensures the system cannot restart automatically after a low oil pressure trip, requiring technician verification before resuming operation
- 90-second time delay allows the compressor to build adequate oil pressure at startup before the control activates, reducing nuisance trips
- Compatible with non-corrosive, all-range refrigerants for broad system compatibility
- Dual voltage rating: 120/240 VAC for flexible electrical integration
- Adjustable cut-out pressure difference range of 8–70 PSI to accommodate a wide variety of compressor and system requirements
Application
The P128AA-1 is ideal for use in commercial refrigeration systems, chillers, and HVAC equipment where compressor oil pressure protection is critical. Its wide adjustable range and dual-voltage compatibility make it a versatile solution for both new installations and replacement applications.
Specifications
- Model: P128AA-1
- Brand: Johnson Controls
- Connection Type: 1/4″ SAE Flare (no capillary tubing)
- Reset Type: Manual
- Time Delay: 90 seconds
- Refrigerant Compatibility: Non-corrosive, all-range refrigerant
- Voltage: 120/240 VAC
- Adjustable Cut-Out Pressure Difference: 8–70 PSI
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