The NESS fine filter station is a product in the NESSessities concept which constantly increases safety, availability, durability and efficiency in thermal oil systems. One of the 3 most important factors for a good quality is a low Conradson value. The NESS Fine filter station helps you ensuring this permanently.
No problem at all! Like all NESSessities, also the NESS Fine filter station is part of the modular concept. As it applies to many other NESSessities, the fine filter station can be retrofitted in each system. Existing processes are not influenced. because the fine filter station filters in the bypass flow. This concept allows the relatively easy retrofitting also for already existing systems.
Generally, NESS is offering two sizes of systems for the filtration in thermal oil systems. However, their functions do not distinguish in principle. If selecting the right size, beside the actual oil volume of the system, the pollution factor must be considered also for retrofitting of the system.
| FF300 | Used oil: < 50.000 litres New oil: < 80.000 litres |
| FF500 | Used oil: < 150.000 litres New oil: < 200.000 litres |
What product solutions are available for your system, you will read here
Beside a certain intake pressure of the thermal oil, of course an adequate power supply is needed for the own pump and the own control unit of the station. Additionally, a washing station or a similar cleaning equipment is recommended for cleaning of the filter baskets.
Depending on the age of the thermal oil system and the heat transfer oil, particles are solved in the oil to a greater or lesser extent. For this reason, for the first filtration we recommend starting with a little wider mesh size (200 µm) of the filter insert – mainly for already running systems. The following mesh sizes / filter basket variants are available:
| Scope of application | External filter | Internal filter |
| First filtration | 200 μm | – |
| Transition filter | 90 μm | – |
| Normal operation | 90 μm | 15 μm |
The filter basket for normal operation includes an additional internal filter. We recommend always having a second filter of this variant in store, for instance to be able to insert the second filter while the first filter is being cleaned to avoid standstill during filter cleaning.
Furthermore, each basket can be completed by a temperature-resistant magnetic bar, to better remove iron particles from the heat transfer oil.
If the filter is full, this is indicated by the fine filter station and the system switches off itself. Now, the filter must be cleaned properly. The filter basket is lifted out of the filter station and in the optimum case, it is cleaned in a cleaning station.
Depending on the filter clogging, also diesel or cold cleaner can be used for cleaning the basket. In this case, use a rim brush for cleaning.
If compressed air or a steam jet are used, please take care not to damage the filter insert. Ultrasonic cleaning in a cleaning or solvent bath is also thinkable.
