Continuously automatic backflushing lubricating oil filter The automatic filters, T150, T280 and X280, 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 space-saving design. • 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 Inspec- • 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 mal- functions In the lubricating oil system. Lubricating oil filter: Protector X280. Easy to Install and to retrofit as an upgrade to existing

Rib Filter frame Upper half Lower half } Filter element Filter screen Figure 1. Full-flow element: Flow direction through one filtering element (Filtration). Diesel engine protection The filter is installed in the full-flow system as close to the engine as possible to prevent harmful solid particles entering the sensitive parts of the engine. Design The filter elements are assembled into a disc stack. The filter elements comprise a filter frame and filter screen, and are divided into sections by ribs. The separator is installed in the bypass system. Its function is to remove harmful contaminants...

QP = Lubricating oil pump capacity Q1 = Maximum capacity of the filter QE = Lubricating oil flow to the engine Clean oil outlet pressure Backflushed oil outlet pressure Diesel engine Note: When selecting filter Q1 must be > QP Stand-by pump Figure 4. Protector automatic lubricating oil filter showing pressure, flow and capacity. Operating principle The unflltered oil entering the filter Is fed by the distributor to 11 of the 12 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...

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 Filtration fineness This can be defined depending on diesel engine require- ments and the specific application. All Alfa Laval automatic lubricating oil filters are designed for installation In the engine room. Counter flanges are according Other Alfa Laval filtration products Alfa Laval also manufactures filters for other engine room applications, such as automatic fuel oil filters, and manual indicator...