FUEL FLOW
Fuel is sucked into the filter by the action of the lift pump via either port A or B.

Plug off the port that is not being used
Filter is designed for the suction side of the engine

STAGES

STAGE 1
Fuel enters through port A or B where it will then enter the centrifuge, separating larger particles of dirt and droplets of water down to 30 microns. The centrifuge does not spin. The filter spins the fuel in a circular motion as it passes through the channels of the centrifuge.

STAGE 2
As the fuel comes out of the centrifuge it will then hit the side of the bowl allowing the dirt and water to settle to the bottom of the bowl.

STAGE 3
The fuel flows through the second centrifuge stage and passes on the outside of the centrifuge. At this point the small droplets of water and dirt particles are thrown to the center of the bowl, moving around and forming larger droplets of water. There the larger vane will catch the particles and bring them down through the vane. This is produced by the vacuum on the lowest part of the second vane.

STAGE 4
With the continuous circular motion of the fuel, the dirt and water droplets continue to grow together; becoming heavier and falling back into the bowl again.

STAGE 5
Specially treated water resistant paper will filter out all remaining dirt and water.

Filter Elements

• Available in 10 or 30 micron rating.
  
• Filters can be cleaned - please see backflushing procedures.
• Fuel then leaves the filter through port C or D.
• Plug off the port that is not being. used or a vacuum gauge kit is available for installation from Separ Filters.

BackFlushing
Backflushing is required when dirt and water block the filter element.

The following signs will indicate this:

• Loss of engine power
• Black smoke may exhaust from the engine
• Vacuum gauge will indicate a high restriction reading on the element of the filter.
  
  
  
  BackFlushing Procedures
• Stop the engine or switch over to the spare filter on the switchable units
  Open the bleed screw
• This introduces atmospheric pressure into the filter
• The dirt particles and larger droplets of water will release from the bottom of the filter element
• Gravity will assist the dirt particles as they slowly fall to the bottom of the bowl
• Open the drain valve (PUSH IN AND TURN)
• The clean fuel above the filter will backflush through the filter element. This will release the smaller dirt and water particles.
• Drain the fuel until the dirt and water are removed from the filter and the bowl.
• Close the drain valve.
  

Close the bleed screw (DO NOT OVER TIGHTEN)

You may now start your engine or switch back to the clean filter.
If the engine still lacks power, try backflushing the filter again.
If restriction is still to high, change the filter element.