6.2.2 Seacocks, strainers and valves

Inspection and cleaning
The sea cock cleaning operation must be carried out from the outside, therefore with the yacht dry or with the intervention of a diver.

• Have the sea cocks checked for cleanliness (absence of algae or encrustations. If necessary, have them cleaned with a brush).

DANGER

If the yacht is in water, before working on the shaft lines, inhibit the starting of the engines, generators and sea water pumps.

• Check that there are no deposits or corrosion on the shut-off valve control levers of the strainer to be checked.
• Clean the valve control levers with a brush.
• Operate the levers repeatedly.
• Close the shut-off valve upstream of the strainer.
• Remove the strainer cover by loosening the screws.
• Remove the strainer element, clean it with a brush and rinse it with water.
• Clean the strainer container.
• Check and, if necessary, replace the strainer cover gasket.
• Fill the strainer with water to prevent the pumps from running dry or the system from starting up.
• Replace the strainer, cover and tighten the bolts.
• Reopen the shut-off valve and check for leaks from the strainer cover.

CAUTION

Before reactivating the system, ensure that the shut-off valve is open.

DANGER

Before working on the sea water lines, inhibit the operation of the fed systems.