ALTLUSSHEIM, GERMANY … Hydraulic systems bring power to where it is needed. To ensure high performance, the systems rely on dependable filters that remove contaminants from the hydraulic fluids. From mining and power generation to oil and gas, construction, and agriculture, operators use Eaton fluid purification, oil treatment and circuit filtration systems to increase the life and reliability of their equipment. The UM 15 mobile filter unit offers safety right from the start. The new filter unit expands the existing UM product portfolio to include a particularly small and portable offline filtration option, ideal for filling oil reservoirs from storage containers such as barrels or canisters.

In this application, particles from hydraulic fluids are filtered before their initial use or reuse. For this process, the hose lance at the suction connection is led into the reservoir containing hydraulic fluid, while the hose lance at the drain connection is led into the oil reservoir of the hydraulic system. For circuit filtration, both hose lances are hooked into the same container. This process ensures that during delivery, the hydraulic fluid is filtered to achieve the highest possible degree of purity, resulting in extended service-life of the system components and inline filters.

“Due to its lightweight and portable design, the filter unit can be utilized in locations that larger mobile devices, requiring transportation on trolleys, cannot access,” explains Simone Ortner, Engineering Manager of Eaton’s Filtration Division. For clean and safe handling, the UM 15 filter unit is equipped with two practical holders for the hose lances, which catch excess oil drops. Additionally, an optical clogging indicator allows for easy and clear monitoring of the filter element’s condition.

High-performance filtration is provided by the WPL spin-on filters with WP filter elements. They offer flow rates of up to 48 GPM (180 l/min) at operating temperatures from 14 to 230°F (-10 to 110°C) and an operating pressure 145 psi (10 bar). They can be easily screwed on and off, and do not require emptying or cleaning. Operators can choose between the WP 90 and WP 130 element sizes based on their service-life requirements. Both versions are offered with fiberglass fleece or paper as the filter material and provide a filter fineness of 10 µm.

Weighing only 33 lbs (15 kg), the UM 15 filter unit is a portable, easy-to-transport, offline filter system for filtration of hydraulic fluids. It consists of a compact and robust support frame, a motor-pump unit, suction and drain hose lance with an interposed WPL spin-on filter and an optical clogging indicator from the O series. The filter system offers a pump output of 4 GPM (15 l/min) at 2,800 U/min and can be used for mineral oil-based hydraulic fluids with a viscosity of 10 to 400 mm²/s.