Fluid Purifier Systems

  • Stationary Units - (IFPS Series)
  • Mobile Units - (IFPM Series)

Effective oil service for hydraulic and lubrication systems requires, beside using an operating filter, the application of a filter unit for off-line filtration, oil change and filling. Before the initial start-up in production facilities and lubrication systems, as well as in mobile and stationary hydraulics, a flushing should be performed, which often isn’t the case. Unfiltered oil gets into the tank and causes sludge accumulation. In order to prevent the above mentioned contamination process, the fluid should be filled in via a fine filter of an off-line filtration unit.

An off-line filtration unit with an electric motor, improves the cleanness and quality of the operating fluid and prolongs its durability, thereby preventing early wear and tear of system components.

Effects of water contamination

Water is ranked as one of the most frequently occurring kind of contamination and as a destructive foreign matter in second place, right after particulate contamination. Some of the problems and damages, water contamination can cause, are:

  • Fluid destruction
  • Exhaustion of additives
  • Reduction of lubrication characteristics of the liquid
  • Oil oxidation
  • Internal corrosion
  • Increased conductivity
Operating principle

The deployed procedure of vacuum evaporation with inert gas is the most effective method of dehydration principles for this application. This method combines high water separating rates with efficient energy use for a large variety of application possibilities. Using dry air as inert gas, enables the dehydration process to achieve water levels underneath the saturation level of the processed fluid at any given operating temperature. In contrast to the standard vacuum evaporation process, which can only reach equilibrium between the fluid and the surrounding water vapor.

Structure of the IFPM/IFPS systems

The fluid to be purified is drawn out of a reservoir by a vacuum generated by the vacuum pump. It then enters a tank with a heater and is being heated up to the temperature set in the operation unit. A certain amount of fluid is drawn through a two-port solenoid valve into the vacuum chamber, where it diffuses over dispersal material, which enlarges the surface of the flfluid. Free and dissolved water vaporises in the chamber due to the lower evaporation point caused by the vacuum. Air from the surrounding area is led into the vacuum chamber through an air filter and a throttle valve. The air which enters approximately in the middle of the chamber, moves upward to the flflow of the flfluid. Water and gas join the upward airflow and enter the vacuum pump after having left the vacuum chamber. At this point, the air and the water vapour are either condensed and emitted to the atmosphere or emitted immediately.

Technology of INTERNORMEN Purifier Systems

The compact IFPM/IFPS systems have been constructed as fully automated, PLC controlled units applicable even in tight areas. The implemented water sensor WSPS 03, in connection with the display unit WFD 01, allows a permanent monitoring of the water level in the purified fluid, and the electronic dp sensor VS1 provides the optimal use and maintenance scheduling of the included particle removal filter element. The desiccant air breather dries up the inert gas and increases therefore the efficiency of the purifier even in high humidity environments.

Factors inflfluencing the Purififier effificiency

The processing time to reach the desired level of water in the operating flfluid mainly depends on the type of flfluid used. Other factors, inflfluencing the speed of the dehydration process are:


  Water extraction rate
Temperature strongly increased
Vacuum increased
Initial content of water increased
Additive increased
Flow rate of the IFPM / IFPS systems increased