6.6.5 Water/fuel separator pre-filters for engines

Maintenance and water drain from collection tank
Bleed frequency or the replacement of the filter element (1) are determined by the contamination level of the fuel.
Check or drain the water collection tank (2) daily.
The collecting cup must be drained before polluting agents reach the turbine end, i.e. when the water detector (3), connected to the warning lights of the main helm station, sends the alarm signal indicating the need to drain water.

After having placed a capacious collection container underneath it, open the drain to discharge containments.
Remove the cover (4) and fill with clean fuel.
Close the cover and tighten the T-handle (5) firmly by hand.

Replacement of filter element
Replace the element according to the schedule recommended by the manufacturer or if a lack of power is noticed. Power loss indicates that the element is indeed clogged. Other elements like a too full tank or excessively contaminated fuel can also clog the filter.

Close the seacock.
Remove the cover.
Remove the element by holding the handle and by pulling lightly forward with a twisting movement.
Insert a new filter having the same filtering features of the one replaced.
Check and, if necessary, replace the filter cover gasket. Apply a layer of clean fuel or engine oil on the seal before reinstalling it, insert the new element with a slow twisting movement downwards.
Fill with clean fuel, then replace the cover. Tighten the T-handle manually and reopen the valve.
Start the engine and ensure there are no leaks. Repair any leaks with engine shut off.

MAINTENANCE

At least once a month check the operation.
At least once a week, and anyway before each refuelling, check for the presence of water in the fuel.
If necessary drain the water present.
When necessary, but at least once a year, replace the cartridge of the filters.

Troubleshooting procedure
The main reason for a poor start-up or lack of power is the result of a clogged filter or of an air leak in the fuel system.
If the device does not prime or does not hold the idle run, or air bubbles are visible through the check glass, first of all check the cover by means of the T-handle and vent it, if it had not been closed properly.
Then check all connections and lines and make sure that no fuel line is clogged with contaminants. If the fuel tank is equipped with an incorporated filter, check for its possible clogging. If the problem persists and the filter element is new, address to Dealer.

CAUTION

The pre-filters’ alarm lights are activated and visible from the helm stations of the main deck and of the upper deck.

CAUTION

The separators have to be checked at regular intervals as suggested by manufacturer, so as not to impair the engines operation.

MAINTENANCE

At least once a month check the operation. At least once a week, and anyway before each refuelling, check for the presence of water in the fuel.
If necessary drain the water present. When necessary, but at least once a year, replace the cartridge of the filters.