Key Features and Benefits:

Enhanced System Efficiency: Optimized for systems requiring oil separation, this oil reduces “light end” oil carryover, minimizing oil thickening in the compressor and reducing oil coating on internal evaporator surfaces, thereby maintaining overall system efficiency.
Extended Maintenance Intervals: With excellent high-temperature and oxidation stability, Shell Refrigeration Oil S2 FR-A 68 provides long service life, even under high compressor discharge temperatures. It effectively controls deposit and sludge formation, resulting in extended oil drain intervals compared to conventional mineral oil-based refrigeration oils.

Applications:

Refrigeration Compressors: Recommended for use in open, semi-open, and hermetic compressors in domestic, commercial, and industrial refrigeration systems. Suitable for both rotary and reciprocating compressor types.
Refrigerant Compatibility: Ideal for ammonia (R717) based refrigeration systems, offering excellent performance even under high compressor discharge temperatures or down to evaporation temperatures of -30°C. It can also be used in systems using hydrocarbons such as propane (R290). Not recommended for use with CFC, HCFC, or HFC refrigerants such as R12, R22, or R134a.

Specifications:

ISO Viscosity Grade: 68
Kinematic Viscosity at 40°C: 68 mm²/s
Kinematic Viscosity at 100°C: 9 mm²/s
Flash Point (COC): 232°C
Pour Point: -39°C
Density at 15°C: 0.862 kg/m³
Neutralization Number: 0.01 mg KOH/g
Miscibility with R290: Completely miscible with hydrocarbon-based refrigerants

Shell Refrigeration Oil S2 FR-A 68 meets the requirements of DIN 51503 KAA and KE.

Health and Safety:

When used properly in the recommended application and with good personal hygiene practices, Shell Refrigeration Oil S2 FR-A 68 is unlikely to present significant health or safety hazards. Avoid contact with skin; use impervious gloves with used oil. After skin contact, wash immediately with soap and water.

Environmental Protection:

Dispose of used oil at an authorized collection point. Do not discharge into drains, soil, or water.