Synthetic refrigeration compressor lubricant. Shell Refrigeration S4 FR-F is a synthetic refrigeration compressor lubricant formulated on a polyol ester base. It has been designed for use with the refrigerant R134a, as well as with other HFC refrigerants.
Applications
Refrigeration compressorsShell Refrigeration S4 FR-F is an oil recommended for use in open, semi-open and hermetic compressors in domestic, commercial and industrial refrigeration systems.
Refrigerant compatibilityShell Refrigeration S4 FR-F is recommended for use with R134a and other types of HFC refrigerant.
Seal compatibilityShell Refrigeration S4 FR-F is compatible with all sealing materials commonly used with HFC refrigerant systems.
Performance & benefits
Extended maintenance intervalsShell Refrigeration S4 FR-F has excellent oxidation and high-temperature stability, ensuring a long service life even where high discharge temperatures occur in the compressor.
Wear protectionShell Refrigeration S4 FR-F has been designed to minimise wear in bearings and pistons — the most critical parts of a reciprocating compressor.
Shell Refrigeration S4 FR-F meets the requirements of the DIN 51503 KD specification
Typical characteristics
Property
Typical value
Method
ISO viscosity grade
32
ISO 3448
Grupa de uleiuri frigorifice
KD
DIN 51503
Kinematic viscosity @40°Cmm2/s
31
ISO 3104
Kinematic viscosity @100°Cmm2/s
6
ISO 3104
Density @15°Ckg/m3
1018
ISO 12185
Flash point (COC)°C
>220
ISO 2592
Pour point°C
-54
ISO 3016
Neutralisation valuemg KOH/g
<0.06
Astm D664 (TAN)
Caracteristici atunci cand sunt utilizate cu - Punct de floculare R134a°C
<-50
DIN 51351
Caracteristici atunci cand sunt utilizate cu - Stabilitate agent frigorific R134a @250°C
>96
DIN 51393
Complete documentation
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