Description

❄️ Suniso SL 220 Technical Details

Suniso SL 220 is a fully synthetic Polyol Ester (POE) refrigeration lubricant specifically engineered for use with Hydrofluorocarbon (HFC) refrigerants.

Key Technical Specifications

Primary Features and Benefits

1. Synthetic Base Stock (POE):

   • It is a fully synthetic Polyol Ester (POE) oil, which is mandatory for lubrication in systems using HFC refrigerants.

   • It contains special additives to provide outstanding lubrication, stability, and corrosion protection.

2. Refrigerant Compatibility and Miscibility:

   • Designed for HFC Refrigerants: Primarily intended for use with ozone-friendly, chlorine-free HFC refrigerants such as R-134a, R-404A, R-407C, R-410A, and R-507A. It is also compatible with many HFC/HFO blends (e.g., R-448A, R-449A, R-452A).

   • Superior Miscibility: As a POE oil, it has excellent miscibility (ability to mix) with HFC refrigerants, even at extremely low temperatures. This is crucial for efficient oil return from the evaporator back to the compressor, preventing oil buildup and optimizing system efficiency.

3. Stability and Protection:

   • High Thermal Stability: It resists thermal degradation, making it suitable for a wide range of applications, from low-temperature refrigeration to high-temperature heat pumps. This minimizes carbon deposits and sludge formation.

   • Optimal Viscosity Retention: The formulation is balanced to prevent excessive viscosity reduction when the refrigerant dissolves into the oil. This maintains a protective lubricating film to prevent metal-to-metal contact and wear on compressor bearings.

   • Chemical Stability: It is highly resistant to chemical interaction with the refrigerant and metal parts in the system.

4. Low-Temperature Performance:

   • Low Pour Point: The pour point of $-30^\circ\text{C}$ (or lower) prevents separated oil from congealing or waxing in refrigerant lines, ensuring smooth circulation and system function in cold parts of the cycle.

   • Low Wax Content: Helps prevent wax deposits that could plug the system components.

Applications

Suniso SL 220 is generally used in:

• Refrigeration, air-conditioning, and heat pump systems.

• Commercial, industrial, and petrochemical refrigeration.

• A wide range of compressor types, including reciprocating, screw, centrifugal, and scroll compressors.

• Systems operating under extreme temperature conditions.

Important Handling Note (Hygroscopic Nature)

• Like all POE oils, the Suniso SL series is hygroscopic, meaning it readily absorbs moisture from the air.

• Contamination with moisture must be avoided, as it can lead to acid formation, corrosion, and system damage.

• Always handle the oil in dry conditions, and ensure the container is sealed quickly after use