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Quick and effi cient dewatering of hydraulic and lubrication oils.Water in hydraulic and lubrication oils may have the following causes:
- Cooler breakage
- Environment humidity
- Fresh oil
Already small quantities of free water in oil can lead to acidifi cation. Corrosion of surfaces at components can be the result. Due to free water, the oil characteristics change, e.g. decreased load-carrying capacity, reduced temperature resistance. In order to avoid economic damage, the oil must be protected against free water or existing water must be withdrawn as fast as possible.
Large water quantities can be withdrawn by oil change, fl ushing of the system or with dewatering units. At systems with hygroscopic oils (materials that absorb water are described as hygroscopic) or with permanent water entry through seals (e.g. hydraulic excavator used in water constructions), ARGO-HYTOS off-line fi lters and fi lter units with EXAPOR®AQUA fi lter elements can be permanently installed in the system, in order to withdraw water. To withdraw remaining water quantities, e.g. after new fi lling, the ARGO-HYTOS EXAPOR®AQUA elements in portable off-line fi lter units also can be used during operation of the system.
EXAPOR®AQUA fi lter elements are applicable in different ARGO-HYTOS fi lter units. On request, also suction or return fi lter elements can be equipped with the EXAPOR®AQUA technology. Depending on the operating situation, the water absorption amounts to approx. 350 ml / element. The combination of water absorbing fi lter layers with micro-fi lter material also allows the use of EXAPOR®AQUA in hydraulic and lubrication systems with high requirements to the oil cleanliness.