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Advanced Engineering 2020

NEC, Birmingham(B40 1NT)

04/11/2020 - 05/11/2020

The UK's largest annual advanced manufacturing trade show, Advanced Engineering is your opportunity to (more)

Drives & Controls Exhibition

NEC, Birmingham(B40 1NT)

25/01/2021 - 27/01/2021

The show brings together key suppliers of state-of-the-art equipment representing the multi-tasking culture (more)

Reliability at sub-zero temperatures

Klüber has recognised that there are increasing problems with the lubrication of ammonia refrigeration compressors. On the one hand, the lubricating oil has to meet higher demands: oil fill quantities have been reduced while temperature, pressure and speed have increased. A solution can be found in the use of hydrogenated mineral oils or synthetic lubricating oils. Klüber Summit RHT-68 is a lubricating oil developed for use on ammonia refrigeration plants with evaporator temperatures down to –36ºC. The hydrogenation of the base oil removes unsaturated and sulphur compounds from the oil. Thus, the oil is being ‘cleaned’ and becomes less reactive with ammonia. The same goes for Klüber Summit RPA-68, a fully synthetic lubricating oil developed for low evaporator temperatures down to –55ºC when, due to their high pour point, mineral oils are no longer capable of flowing. Finally, Klüber Summit R-200, is not only suitable for use with ammonia, but can also be applied in combination with CO2, propane or butane.

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