Corena S 4 R

Advanced Synthetic Rotary Air Compressor Oil

Performance Benefits

Long oil life – Maintenance saving

Shell Corena S4 R is capable of providing oil maintenance intervals of up to 12,000 hours (where allowed by manufacturers) even when operating at maximum discharge temperatures in excess of 100°C.

The advanced formulation of Shell Corena S4 R helps deliver exceptional oil life through:

• Exceptional resistance to thermal and chemical breakdown.
• Resist formation of deposits on rotating components in screw compressors and in sliding vane slots for continuous efficient operation.
• Exceptionally low levels of deposit formation to help maintain excellent internal surface cleanliness particularly in oil/air separator and coalescer systems.

Exact oil maintenance interval will depend on intake air quality, duty cycle and ambient conditions. For hot and humid type climates as found in the Asian and Pacific regions, a reduced oil drain period is recommended (consult OEM recommendations).

Outstanding wear protection

Shell Corena S4 R helps provide exceptional protection and protection of internal metal surfaces from corrosion and wear.

It contains an advanced ashless anti-wear system to help prolong the life of critical parts such as bearings and gears.

Maintaining system efficiency

Shell Corena S4 R is designed to provide rapid air release without excessive foaming to give trouble-free operation even under cycling conditions helping to ensure reliable start-up and continuous compressed air availability.

Shell Corena S4 R has low volatility and oil carryover to provide reduced oil top-up requirements in combination with increased air quality.

In addition, Shell Corena S4 R has excellent water separation properties to help ensure continuous efficient operation of the compressor even in the presence of water.

Applications

Rotary sliding vane and screw air compressors

Shell Corena S4 R is suitable for oil-flooded/oil-injected, single or two-stage compressors, operating at pressures of in excess of 25 bar and with air discharge temperatures of over 100°C (including intermittent operation under these conditions).

Severe service conditions

May also be used where exceptionally high ambient temperatures are found, when the oil temperature cannot be reduced to normal levels.

ABB Turbochargers

The product is recommended for use in ABB turbochargers fitted to low and medium speed diesel engines used in marine and power generation applications.

Advice on applications not covered in this leaflet may be obtained from your Shell representative

Specifications and Approvals

Shell Corena S4 R meet the requirements of: ISO 6743-3A-DAJ.

Shell Corena S4 R 68 is approved by ABB for use in VTR turbochargers, with a maximum oil change interval of 5000 hours (HZTL 90617, list 3a).

Health and Safety

Guidance on Health and Safety is available on the appropriate Material Safety Data Sheet, which can be obtained from your Shell representative.

Miscibility

Shell Corena S4 R oils are fully miscible with mineral oils, although dilution with mineral lubricants will markedly reduce its performance. Care must be taken to avoid mixing Shell Corena S4 R with certain other types of synthetic fluids. Contact your Shell representative for further information

Seal Compatibility

Shell Corena S4 R oils are compatible with seal materials specified for use with mineral oils.

Protect the Environment

Take used oil to an authorized collection point. Do not discharge into drains, soil or water.

Advice

Advice on applications not covered in this leaflet may be obtained from your Shell representative.

Typical Physical Characteristics

These characteristics are typical of current production. Whilst future production will conform to Shell's specification, variations in these characteristics may occur.