Castrol Aircol™ AMS 68 is a high performance refrigeration compressor lubricant specially formulated from highly refined hydro-processed base oils and performance additives for systems running on Ammonia (NH3) refrigerant. It is specifically designed for systems where oil is allowed to separate from the refrigerant before the refrigerant passes the evaporator.

Application

The operating conditions experienced in ammonia refrigeration compressors requires very specific lubrication properties. Lubricants commonly used in Freon refrigeration compressors normally do not perform well with ammonia refrigerant, resulting in problems such as high oil carry-over from the compressor, high oil top-up rate, and rapid viscosity increase and carbon deposit formation in the compressor.

Aircol AMS is based on hydro-processed base oils, which have a narrow cut boiling point range, high degree of saturation, and low volatility properties, resulting in low carbon residues. These base oil properties, reinforced by unique additive technology, provide outstanding performance in ammonia refrigerating compressors, effectively reducing oil top-up rate, and minimising viscosity increases and carbon deposit formation in the compressor. Significant improvement in compressor cleanliness and multi-fold increase in oil life can therefore be expected when switching from conventional refrigeration oils to Aircol AMS.

Aircol AMS can be used in both reciprocating and screw type compressors running on ammonia refrigerant. Due to the high viscosity index of Aircol AMS compared to the normal naphthenic based refrigeration oils, it is capable of providing better wear protection to the compressor components, particularly under high discharge temperature.

To achieve the maximum benefits and increased oil life offered by Aircol AMS, it is recommended that flushing oil with high solvency should be used to clean the compressor of any residual oil before filling. One cost effective way to achieve this is by running the compressor on normal naphthenic based refrigeration oil for about 50 hours or so, then the flushing oil can then be drained off before refilling with a fresh charge of Aircol AMS.

Advantages

Typical Characteristics — Aircol AMS 68

The information contained in this data sheet is based on data considered to be accurate. No warranty is expressed or implied regarding the accuracy of this data. Product specifications and availability are subject to change without notice. Lube Control Pty Ltd accepts no responsibility for any loss or damage arising from the use of this information.