WARNINGThe bleeding of tank is a special operation, that has therefore to be carried out by specialized person.
| Component | Maintenance | Notes and precautions |
| Fuel tank | Bleeding (at least every two or three refuelling and at least once a month) | As shown in the following sequence |
| Flow stopper | Fuel checks and cleaning | As shown in the following sequence |
| Water/fuel separator filters for engines | Maintenance and check Water drain from collection tank Replacement of filter element Troubleshooting procedure |
As shown in the following sequence |
| Water/fuel separator filters for generators | Maintenance and water drain Replacement of filter element Troubleshooting procedure |
As shown in the following sequence |
FUEL TANK:
Bleeding
The tank is equipped with a flametrap vent and with a visual check of the fuel level. The gauge includes a lower valve to be operated in order to display the real level in the engine room. The geometric shape of the tank allows the decantation of possible impurities or water in the fuel. For the drainage of water and possible impurities embarked with fuel, it is necessary to wait for some hours after refuelling, so that the suspended particles have enough time to settle down.
Drain through the opening of drainage valve located on the flange. To this aim take off the blanking plug from the valve, open the valve slowly and let the water and the deposits drain into a container, until only clean fuel comes out. After the operation close the valve, disconnect the hose and reinsert the plug. In addition to the venting valve, the fuel supply valves for the engines and generators are also installed on the flange.
During the long periods of inactivity of the yacht, when the tank is empty, we suggest to open the flange and to remove the fuel deposits embarked during refuelling.
WARNINGThe bleeding of tank is a special operation, that has therefore to be carried out by specialized person.
The crew should always be present during this operation, as fuel leaks may occur in the engine room.
WARNINGDuring the tank inner cleaning, it is a good norm, to ventilate the room for a long time with the help of fans and to wear all necessary protections, to avoid injuries caused by gas fumes.
During the flange assembly, make sure that the screws are correctly and uniformly tight, in order to prevent leaks of fumes and fuel.
Furthermore, check the condition of the O-ring.
These are extraordinary maintenance operations, contact RIVA SERVICE in advance.
CAUTIONThe draining should never be conveyed to the bilge. If the drained substances fall into the bilge, stop the bilge pumps immediately.
CAUTIONThe bleeding procedure should be carried out every two or three refuelling operations.
ENVIRONMENTHandle water mixed with fuel and dispose of it according to the rules in force. Use only authorized disposal procedures; in case of doubt, refer to the Port Authorities.
CAUTIONWe advise to drain and clean the tank periodically, at least once a year.
Please remember that re-used fuel must be filtered.
WARNINGThe bilges of the engine room must always be kept clean, so that fuel or oil leaks or penetrations from the engines or the generator can be easily noticed. If leaks are noticed, it is necessary to stop the engines and to let them cool and only afterward, if possible, repair the leak.
Finally clean the bilges.
ENVIRONMENTIt is forbidden to discharge bilge water mixed with oil or diesel fuel into the sea, because this can cause of serious pollution. Periodically check the level of possible oily waters inside the collection tanks under the engines; should the level be next to overflowing into the bilge, disconnect the magneto-thermal switches of pumps of the bilge suction system, to prevent accidental spilling, until the bilge is empty, in compliance with current legislation for environmental protection. During the maintenance operation in the engine room, it is compulsory to disconnect the magneto-thermals of the bilge pumps suction system, avoiding in this way accidental spills.
Check periodically the correct operation of the valves.
At least every three months check for the presence of leaks.
At least once every three months drain the tank.
At least once every two years carry out complete cleaning of the tank; check anyway the draining according to the quality of fuel filled.
Fuel flow stopper:
Fuel checks and cleaning
Regularly check for the air outlet valve and clean the screen if necessary.
At least each season begin and end carry out the following checks:
CAUTIONFirst place the filling nozzle as deep as possible into the filling pipe (through the rubber of the anti-splash sleeve), then use the nozzle to fill the tank.
ENVIRONMENTFuel is harmful to the environment. Prevent any spilling.
Keep oil absorbent rags within reach as a precaution!