The automatic filters, T150D, T280D and X280D, are designed specifically for full-flow filtering of lubricating oils for trunk piston and crosshead engines. Unique features • Robust disc-type filter elements. • Continuous backflushing. • Filtered oil drives the backflushing process. • Constant pressure drop across the filter. • Compact and lightweight. • Cleaning of backflushed oil by refiltration in the diversion chamber before return to the engine sump. • Removal of particles collected from the system at the filter. Key benefits • Robust design reduces risk of filter element cracking. • Continuous backflushing significantly prevents adhesion of retained solids to filter surfaces, which results in: – No manual cleaning of filter elements. – Low and constant pressure drop across the filter elements, which further reduces the risk of cracking. • Robust filter elements and continuous backflushing ensure safe protection of the diesel engine, with normally more than 12,000 operating hours between cleaning and inspection of the filters. • Use of filtered oil for backflushing process eliminates the need for external power supply and compressed air. • Constant pressure drop across the filter, combined with the pressure drop indicator, facilitates detection of malfunctions in the lubricating oil system. • Easy to install and to retrofit as an upgrade to existing installations. • No need for a sludge treatment unit (consumable item or manual cleaning system). The diversion chamber collects the particles backflushed from the full-flow chamber and clean itself to concentrate sludge, acting as an automatic and maintenance-free sludge treatment system. Lubricating oil filter: Protector X280D. Lubricating oil filter Continuously automatic backflushing lubricating oil filter with diversion chamber

Diesel engine protection The separator is installed in the bypass system. Its function is the removal of harmful contaminants (solid particles and water) from the lubricating oil system. The filter is installed in the full-flow system as close to the engine as possible to stop harmful solid particles that may not have been removed by the separator. These particles can then be removed from the system at the drain valve on the filters. Design Two types of filter elements, full-flow (Figure 1) and diversion elements, are assembled into a disc stack. The filter elements comprise a filter frame and...

Operating principle The unfiltered oil entering the filter is fed by the distributor to 11 of the 12 full-flow filtering columns. Solids are collected on the filter surface and the filtered oil flows to the engine. Previously collected solids are removed in the twelfth column by backflushing with a small amount of the filtered oil and taken through a passage in the distributor to the diversion chamber. The distributor, which is driven by the hydraulic motor on top of the filter housing, rotates at regular intervals to feed oil for filtration in 11 columns and to backflush in the twelfth. In this...

Guideline to overall dimensions Depending on the surface area and number of filter elements required for your application, the number of housings will vary, and hence the overall size of the filter will be different. Filtration fineness This can be defined depending on diesel engine requirements and the specific application. Installation All Alfa Laval automatic lubricating oil filters are designed for installation in the engine room. Counter flanges are according to DIN standards (JIS as option). Other Alfa Laval filtration products Alfa Laval also manufactures filters for other engine room...